SERVICE MANUAL Outdoor unit
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Outdoor unit
October 2008
SERVICE MANUAL
R410A
Outdoor unit
Revision:
• PUZ-HA30NHA is added in
REVISED EDITION-A.
[model name]
[Service Ref.]
PUZ-HA30NHA
PUZ-HA30NHA
PUZ-HA36NHA
PUZ-HA36NHA
No.OCH426
REVISED EDITION-A
• Some descriptions have been
modified.
• Please void OCH426.
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
CONTENTS
1. REFERENCE MANUAL ·································· 2
2. SAFETY PRECAUTION ·································· 3
3. FEATURES ······················································ 6
4. SPECIFICATIONS ··········································· 7
5. DATA ································································ 8
6. OUTLINES AND DIMENSIONS ···················· 10
7. WIRING DIAGRAM·········································11
8. WIRING SPECIFICATIONS ··························· 12
9. REFRIGERANT SYSTEM DIAGRAM ·············· 17
10. TROUBLESHOOTING ··································· 18
11. EASY MAINTENANCE FUNCTION··············· 70
12. FUNCTION SETTING ···································· 73
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ············ 81
14. DISASSEMBLY PROCEDURE ······················ 91
PARTS CATALOG (OCB426)
PUZ-HA30NHA
PUZ-HA36NHA
1
REFERENCE MANUAL
1-1. INDOOR UNIT
Model name
Service Ref.
PLA-A18/30/36BA
PLA-A18BA
Service
Manual No.
PLA-A18BA1
PLA-A30BA1
PLA-A36BA
PLA-A36BA1
PKA-A18GA
PKA-A18GAL
PKA-A18GA/GA1/GA2
PKA-A18GAL/GAL1/GAL2 PKA-A30FA2
PKA-A30/36FA
PKA-A30/36FAL
PKA-A36FA/FA1/FA2
PKA-A36FAL/FAL1/FAL2
1-2. TECHNICAL DATA BOOK
Manual No. OCS12
2
PKA-A30FAL2
OCH420
OCB420
OC369
2
SAFETY PRECAUTION
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminals, all supply
circuits must be disconnected.
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Use new refrigerant pipes.
Do not use refrigerant other than R410A.
In case of using the existing pipes for R22, be careful with
the followings.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
Make sure that the inside and outside of refrigerant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Tools for R410A
Flare tool
Size adjustment gauge
Vacuum pump adaptor
Electronic refrigerant
charging scale
Store the piping to be used during installation
indoors and keep both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
Keep the tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
Do not use a charging cylinder.
If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.
If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
3
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No.
1
Tool name
Gauge manifold
Specifications
·Only for R410A
·Use the existing fitting specifications.
·Use high-tension side pressure of 5.3MPa·G or over.
2
Charge hose
·Only for R410A
3
Electronic scale
4
Gas leak detector
·Use the detector for R134a, R407C or R410A.
5
Adaptor for reverse flow check
·Attach on vacuum pump.
6
Refrigerant charge base
7
Refrigerant cylinder
8
Refrigerant recovery equipment
·Use pressure performance of 5.09MPa·G or over.
·Only for R410A
·Cylinder with syphon
4
·Top of cylinder (Pink)
2-3. CAUTIONS FOR REFRIGERANT PIPING WORK
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is
same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the
working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.
1Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness
shown below. (Never use pipes of 0.7mm [7/256 inch] or below.)
Diagram below: Piping diameter and thickness
Thickness : mm [inch]
Outside
Nominal
dimensions (inch) diameter (mm)
R410A
R22
1/4
6.35
0.8 [1/32]
0.8 [1/32]
3/8
9.52
0.8 [1/32]
0.8 [1/32]
1/2
12.70
0.8 [1/32]
0.8 [1/32]
5/8
15.88
1.0 [5/128]
1.0 [5/128]
—
3/4
19.05
1.0 [5/128]
2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other
refrigerants. Therefore, to enhance air tightness and intensity, flare cutting dimension of copper pipe for R410A has
been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for
R410A also has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch, the dimension B changes.
Use torque wrench corresponding to each dimension.
Dimension A
Dimension B
Flare cutting dimensions
Nominal
Outside
dimensions (inch) diameter (mm)
1/4
6.35
3/8
9.52
1/2
12.70
5/8
15.88
3/4
19.05
9.1
13.2
16.6
19.7
Unit : mm [inch]
Dimension A ( +0
-0.4 )
R410A
R22
[11/32-23/64]
9.0
[1/2-33/64]
13.0
[41/64-21/32]
16.2
[49/64-25/32]
19.4
—
23.3
Flare nut dimensions
Nominal
Outside
dimensions (inch) diameter (mm)
1/4
6.35
3/8
9.52
1/2
12.70
5/8
15.88
3/4
19.05
Unit : mm [inch]
Dimension B
R410A
R22
17.0 [43/64]
17.0
22.0 [7/8]
22.0
26.0 [1-3/64]
24.0
29.0 [1-9/64]
27.0
—
36.0
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
Tools and materials
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
Use
Air purge, refrigerant charge
and operation check
Gas leak check
Recover refrigerant
Refrigerant charge
Apply to flared section
R410A tools
Can R22 tools be used?
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil and alkylbenzene
oil (minimum amount)
Safety charger
Prevent compressor malfunction Tool exclusive for R410A
when charging refrigerant by
spraying liquid refrigerant
Charge valve
Prevent gas from blowing out Tool exclusive for R410A
when detaching charge hose
Tools for other refrigerants can
Vacuum pump
(Usable if equipped
Vacuum drying and air
with adopter for
be used if equipped with adoppurge
reverse flow)
ter for reverse flow check
Tools for other refrigerants
Flare tool
(Usable by adjusting
Flaring work of piping
can be used by adjusting
flaring dimension)
flaring dimension
Tools can be used for other refrigerants
Bend the pipes
Bender
Tools can be used for other refrigerants
Pipe cutter
Cut the pipes
Tools can be used for other refrigerants
Welder and nitrogen gas cylinder Weld the pipes
Tools can be used for other refrigerants
Refrigerant charging scale Recover refrigerant
Vacuum gauge or thermis- Check the degree of vacuum. (Vacuum Tools can be used for other
valve prevents back flow of oil and refri- refrigerants
tor vacuum gauge and
gerant to thermistor vacuum gauge)
vacuum valve
Charging cylinder
Recover refrigerant
Tool exclusive for R410A
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
5
3
FEATURES
PUZ-HA30NHA
PUZ-HA36NHA
HIGH HEATING CAPACITY
Performance
about 60%UP
(Btu/h)
40,000
Heating capacity
Industry-first flash injection circuit is equipped, which enables to
keep the equal capacity to the rating even when outside temperature is 5°F[-15°C].
HA36
38,000BTU/h
A36
30,000
23,500BTU/h
0
-13°F
[-25°C]
-4°F
[-20°C]
5°F
[-15°C]
14°F
[-10°C]
23°F
[-5°C]
32°F
[0°C]
Outdoor W.B. temp.
HIGH SPEED HEATING START UP
When stabled,
hot air of 122˚F[50˚C]
(Btu/h)
40,000
Heating capacity(peak)
The performance of heating start up is improved. Compared to
PUZ-A type, Hyper Heating Inverter reduced the time for heating start up by about half. After starting operation, the airflow
temperature goes up to 105°F[41°C] quickly in 10 minutes. With
industry first shorter and less frequent defrost, defrosting time is
cut down by 15% compared to PUZ-A type and heating operation
can continuosly run for maximum 150 minutes.
It doesn’t become 122˚F[50˚C]
when outside air temp.
is too low.
HA36
Outlet air temp.105˚F[41˚C]+1
33,000Btu/h
(Outlet air temp.
105°F[41°C])
ou
Ab
t 5m
in.
Stable
About 10
30,000
min.
PUZ-A type:
Outlet air temp. 105˚F[41˚C]
About
50% CUT
0
0
5
10
Elapsed time(min.)
+1 Condition
Room temp. 70°F[21°C](D.B.) Outdoor temp. 35°F[1.7°C](D.B.) / 33°F[0.6°C](W.B.) : Hi notch
WIDE HEATING RANGE
The heating range is expanded to -13°F[-25°C] compared to
PUZ-A type which is up to 10°F[-12°C].
Expanded
Up to -13°F
-13°F
10°F
A36 type
HA36 type
-13°F
-4°F
5°F
14°F
[-25°C] [-20°C] [-15°C] [-10°C]
23°F
[-5°C]
32°F
[0°C]
Outdoor wet-bulb temperature
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
Max.100ft, 30m
The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level
regardless of the length (max.: 100ft [30m] and mim.: 16ft [5m]) of piping. The additional refrigerant charging work during
installation often causes problems. It is completely eliminated by chargelss system. This unique system improves the quality
and reliability of the work done. It also helps to speed up the installation time.
6
4
SPECIFICATIONS
Service Ref.
Power supply
MCA
MOCP
Breaker size
External finish
Heat exchanger
Defrost method
Crankcase heater
Compressor
Fan
Sound level
Protection devices
Dimension
Weight
Refrigerant
A
A
A
kW
Model
Motor output
R.L.A.
L.R.A.
Starter type
Fan(drive) % No.
Fan motor output
Fan motor
Airflow
Cooling
Heating
ANB33FJEMT
kW
mm
mm
mm
in.
in.
in.
kg
lbs
Charged
kg
lbs
Single
60Hz
208/230V
28
40
30
Munsell 3Y 7.8/1.1
Plate fin coil
Reverse cycle
Hermetic
2.5
20
27.5
Inverter
Propeller fan % 2
0.086 + 0.086
0.40 + 0.40
100
3530
52
53
HP switch
LP switch
Discharge thermo
950
330+30
1350
37-12/32
13 + 1-3/16
53-5/32
121
267
R410A
5.5
12
Linear expansion valve
Ether (FV50S)
1.4
45
9.52
3/8
15.88
5/8
Flared
Flared
Max. 30
Max. 100
Max. 75
Max. 245
kW
F.L.A.
m3/min
CFM
dB
dB
W
D
H
W
D
H
Control
Oil
Charged
Refrigerant
piping
PUZ-HA36NHA
PUZ-HA30NHA
Phase
Cycle
Voltage
Model
L
oz
mm
in.
mm
in.
Pipe size OD
Liquid
Pipe size OD
Gas
Connection method Indoor
Connection method Outdoor
Height difference
m
IU - OU
ft
Piping length
m
ft
7
ANB33FJCMT
DATA
5
5-1. REFILLING REFRIGERANT CHARGE (R410A : oz, kg)
Service Ref.
PUZ-HA30NHA
PUZ-HA36NHA
Piping Length (one way)
150ft
160ft
165ft
46m
49m
50m
100ft
30m
110ft
33m
120ft
37m
130ft
40m
140ft
43m
194 oz
200 oz
206 oz
212 oz
218 oz
224 oz
230 oz
5.5 kg
5.7 kg
5.9 kg
6.0 kg
6.2 kg
6.4 kg
6.6 kg
Factory
Charged
180ft
55m
200ft
61m
210ft
64m
230ft
70m
245ft
75m
237 oz
242 oz
254 oz
260 oz
272 oz
280 oz
195 oz
6.7 kg
6.9 kg
7.2 kg
7.4 kg
7.7 kg
7.9 kg
5.5 kg
Longer pipe than 100 ft, additional charge is required.
5-2. COMPRESSOR TECHNICAL DATA
(at 20°C, 68°F )
PUZ-HA30NHA
PUZ-HA36NHA
ANB33FJEMT
ANB33FJCMT
U-V
0.188
0.188
U-W
0.188
0.188
W-V
0.188
0.188
Service Ref.
Compressor model
Winding Registance
()
5-3. NOISE CRITERION CURVES
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
PUZ-HA30NHA
PUZ-HA36NHA
MODE SPL(dB)
COOLING
52
HEATING
53
LINE
90
80
MICROPHONE
70
NC-70
3.3ft
60
UNIT
NC-60
50
5ft
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
GROUND
NC-20
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
8
5-4. STANDARD OPERATION DATA
PKA-A30FA
Representative matching
COOLING
Mode
Total
Capacity
Input
HEATING
30,000
32,000
34,200
38,000
W
2,730
3,460
2,950
3,100
PKA-A30FA
PKA-A36FA
Phase
Cycle
Single
Voltage
230V
Current
0.52A
60Hz
Outdoor unit model
PUZ-HA36NHA
PUZ-HA30NHA
Phase
Cycle
Single
60Hz
Voltage
230V
12.1 A
13.8 A
12.7 A
13.4 A
Discharge pressure
MPa
2.57
3.21
2.60
2.81
Suction pressure
MPa
0.83
0.76
0.91
0.73
Discharge temperature
°C
70.6
83.0
69.0
76.1
Condensing temperature
°C
43.5
51.5
44.5
47.0
Suction temperature
°C
10.6
4.0
3.2
2.7
Ref. Pipe length
m
7.6
7.6
7.6
7.6
Discharge pressure
PSIG
372
465
377
407
Suction pressure
Current
Refrigerant circuit
COOLING
BTU/h
Indoor unit model
Electrical circuit
PKA-A36FA
HEATING
PSIG
120
110
132
106
Discharge temperature
°F
159
181
156
169
Condensing temperature
°F
110
125
112
117
Suction temperature
°F
51
39
38
37
Ref. Pipe length
ft
25
25
25
25
Intake air temperature DB
°C
26.6
21.1
26.7
21.1
Intake air temperature WB
°C
19.3
15.6
19.4
15.6
Discharge air temperature DB
°C
12.1
44.6
13.7
42.7
Outdoor
side
Intake air temperature DB
°C
35
8.3
35
8.3
Intake air temperature WB
°C
25.1
6.1
23.9
6.1
Indoor
side
Intake air temperature DB
°F
80
70
80
70
Intake air temperature WB
°F
67
60
67
60
Discharge air temperature DB
°F
54
112
57
109
Intake air temperature DB
°F
95
47
95
47
Intake air temperature WB
°F
77
75
43
0.77
–
0.11
–
Indoor
side
Outdoor
side
SHF
0.70
43
–
BF
0.08
–
9
Min. 150mm
<5-29/32>
Min. 10mm
<3/8>
Service space
Min.
10mm<3/8>
:92
8>
<3-5/
92<3-5/8>
65<2-9/16>
Front piping hole
(Knockout)
45<1-25/32>
55<2-3/16>
63
<2-1/2>
27<1-1/16>
Front trunking hole 40<1-9/16>
(Knockout)
Conduit hole
(2-:27<1-1/16>Knockout)
Piping Knockout Hole Details
73<2-7/8>
23<29/32>
Min.
500mm
<19-11/16>
19<3/4>
:92
<3-5/8
>
40<1-9/16>
92<3-5/8>
45<1-25/32>
Conduit hole
(2-:27<1-1/16>Knockout)
92<3-5/8>
65<2-9/16>
:
<3-5 92
/8>
Rear piping hole
(Knockout)
74<2-19/32>
40<1-9/16>
2-:22.2<7/8>
Handle
1/2 Conduit attachment
When installing the conduit.
Set the attachment to the
inner side of each panel.
Handle
Handle
Side Air Intake
Rear Air Intake
Side Air Intake
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
Rear trunking hole
(Knockout)
40<1-9/16>
Right trunking hole
(Knockout)
FOUNDATION
<Foundation bolt height>
Min.
30mm
<1-3/16>
Conduit hole
(2-:27<1-1/16>Knockout)
55<2-3/16>
75
<2-31/32>
Right piping hole
(Knockout)
Air intake
Handle
····Refrigerant GAS pipe connction (FLARE):15.88<5/8>
····Refrigerant LIQUID pipe connection (FLARE): 9.52<3/8>
*1 ····Indication of STOP VALVE connection location.
Example of Notes
Min. 1000mm
<39-3/8>
Min. 10mm
<3/8>
FREE
27<1-1/16>
92<3-5/8>
63<2-1/2>
73<2-7/8>
30<1-3/16>
220
<8-21/32>
66<2-5/8>
42<1-21/32>
Earth terminal
950<37-13/32>
Drain hole
5-:33<1-5/16>
71<2-13/16>
2
1
Handle
Service panel
Terminal Block
Left···Power supply wiring
Right····Indoor/Outdoor wiring
2-12%36 Oval hole
(Foundation Bolt M10<W3/8>)
145
145
145
<5-23/32> <5-23/32> <5-23/32>
322<12-11/16>
Air Discharge
175<6-7/8>
175<6-7/8>
600<23-5/8>
2-U Shaped notched hole
(Foundation Bolt M10<W3/8>)
Rear Air Intake
Front piping cover
Bottom piping hole
(Knockout)
Rear piping cover
PUZ-HA30NHA
PUZ-HA36NHA
23<29/32>
Please secure the unit firmly
with 4 foundation (M10<W3/8>)
bolts. (Bolts and washers must
be purchased locally.)
55<2-3/16>
27<1-1/16>
1350<53-5/32>
Min.
150mm
<5-29/32>
Min.
500mm
<19-11/16>
3 FOUNDATION BOLTS 4 PIPING-WIRING DIRECTIONS
* 1 443<17-7/16>
330<13>
30<1-3/16>
23<29/32>
45<1-25/32>
Dimensions of space needed
for service access are
shown in the below diagram.
31<1-7/32>
* 1 447<17-19/32>
The diagram below shows a
basic example.
Explantion of particular details are
given in the installation manuals etc.
73<2-7/8>
63<2-1/2>
23<29/32>
635<25>
371<14-19/32>
219<8-5/8>
417<16-13/32>
1 FREE SPACE (Around the unit) 2 SERVICE SPACE
71<2-13/16>
10
81<3-3/16>
56<2-7/32>
19<3/4>
370<14-9/16>
28<1-3/32>
53<2-3/32>
1076<42-3/8>
6
OUTLINES AND DIMENSIONS
Unit : mm<inch>
WIRING DIAGRAM
[LEGEND]
SYMBOL
TB1
MC
MF1, MF2
21S4
63H
63L
SV
TH3,TH32,TH33
TH4
TH6
TH7
TH8
LEV-A, LEV-B,LEV-C
DCL
ACTM
CB
CY1, CY2
PUZ-HA36NHA
NAME
Terminal Block<Power Supply, Indoor/Outdoor >
Motor for Compressor
Fan Motor
Solenoid Valve (Four-Way Valve)
High Pressure Switch
Low Pressure Switch
Solenoid Valve (Bypass Valve)
Thermistor<Outdoor Pipe>
Thermistor<Discharge>
Thermistor<Outdoor 2-Phase Pipe>
Thermistor<Outdoor>
Thermistor<Heatsink>
Electronic Expansion Valve
Reactor
Active Filter Module
Main Smoothing Capacitor
Capacitor
SYMBOL
P.B.
TABU/V/W
TABS/T
TABP1/P2/P
TABN1/N2/N
DS2, DS3
IPM
N.F.
LI / LO
NI / NO
EI, E2
52C
C.B.
SW1
NAME
Power Circuit Board
Connection Terminal<U/V/W-Phase>
Connection Terminal <L/N-Phase>
Connection Terminal<DC Voltage>
Connection Terminal<DC Voltage>
Diode Bridge
Power Module
Noise Filter Circuit Board
Connection Terminal<L-Phase>
Connection Terminal<N-Phase>
Connection Terminal<Ground>
52C Relay
Controller Circuit Board
Switch<Forced Defrost, Defect History Record
Reset, Refrigerant Address>
Switch<Test Operation>
Switch<Function Switch>
SW4
SW5
SYMBOL
SW6
SW7
SW8
SW9
SWP
CN31
SS
CNM
CNMNT
NAME
Switch<Model Select>
Switch<Function Setup>
Switch<Function Setup>
Switch
Switch<Pump Down>
Connector<Emergency Operation>
Connector<Connection for Option>
Connector<A-Control Service Inspection Kit>
Connector
<Connected to Optional M-NET Adapter Board>
Connector
CNVMNT
<Connected to Optional M-NET Adapter Board>
Connector
CNDM
< Connected for Option (Contact Input)>
LED<Operation Inspection Indicators>
LED1,LED2
Fuse< T6.3AL250V>
F1~F4
X51,X52,X55 Relay
When M-NET adapter is connected
LEV-C
63L
LEV-A
LEV-B
M
M
TH33 TH32 TH7 TH6 TH3 TH4
M
5
C. B.
t°
t°
t°
t°
12
1
2 1
1
1
63L
(RED)
3
63H
(YLW)
3
TRANS
2
1
3
1
6
LEV-B
(RED)
1
CN2
(WHT)
1
F1
3
1
21S4 3
(GRN)
F4
4
14
LEV-C
(BLU)
6
1
2
3
1 SV2
3
(BLU)
21S4
1
SW12
LED4
2
1
M-NET SUBSTRATE
CN2M
(WHT)
CND
(WHT)
3 1
CN31
1 2
X52
2
3
1
5
CN52C
(RED)
2 1
7
1
7
F3
CNAC
(WHT)
3
CNM
(WHT)
5
2
F2
1
CNVMNT CNMNT
(WHT) (WHT)
CN4
(WHT)
CNDC 1
(PNK)
CNS
(WHT)
6
X55
MF2 1
MS
3~
CNF2
(WHT)
LEV-A
(WHT)
SW1 SW6
4
SW1
LED3
+1
CN51 CNDM
(WHT) (WHT)
1
SW4 SWP SW8 SW5
1 2
3
X51
1
TH33 TH32 TH7/6 TH3 TH4
(YLW) (BLK) (RED) (WHT) (WHT)
7
5
5
t°
LED1
MS
3~
t°
+1
CNF1
(WHT)
LED2
7
MF1 1
SW11
CN5
(WHT)
1
LED2
5
3
SW9 SW7
63H
LED1
PUZ-HA30NHA
LED5
7
3
1
3
A B S
TB7
1
M-NET
5
SS
(WHT)
SV
BLU
WHT
N. F.
LO
NO
2
52C
1
2
CN52C
(BLK)
P. B.
1
CNAF
(WHT)
CNDC
(PNK) 2
6
1
TABN1
BLK
2
1
W
BLK
U
L2
1
P
N1
N2
BLK
6
RED
L1
L2
GR
ON
OFF
SW5-6 +2
36N
ON
OFF
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
11
ON
OFF
ON
OFF
S2
S3
CY1
CY2
TB1
INDOOR
UNIT
+1MODEL SELECT
30N
U
WHT
Io
ACTM
SW6
S1
BRN
RED
L1
RED
4
ORN
DCL
GRN
YLW
MC
MODEL
NI
BLU
LI
BLU
MS
3~
CN5
(RED)
1
CNAC1
(WHT)
WHT
V
TABN2
2
M-NET ADAPTER
NAME
Terminal Block<M-net connection>
Connector<Transmission>
Connector<Power Supply>
Connector<M-NET communication>
Switch<Status of communication>
Switch<Address setting : 1st digit>
Switch<Address setting : 2nd digit>
LED<Power Supply : DC5V>
LED<Connection to Outdoor Unit>
LED<Transmission : Sending>
LED<Transmission : Recelving>
LED<Power Supply : DC12V>
BLK
E2
U
3
U
SYMBOL
TB7
CN5
CND
CN2M
SW1
SW11
SW12
LED1
LED2
LED3
LED4
LED5
CNAC2
(RED)
WHT
RED
1
2
1
2
TABP
WHT
BLK
WHT
CB
CN5
(RED)
CN4
(WHT)
TABN
TABS
1
TABW
2
DS2
TABP1 RED
RED TABU
t° 2
7
1 CN3
2 (WHT)
BLU
3
IPM
WHT TABV
BLK
TH8
TABP2
CN2
(WHT)
TABT
3
1
RED
7
DS3
RED
4
POWER SUPPLY
~/N 208/230V 60Hz
+Use copper supply wires.
1 2 3 4 5 6
1 2 3 4 5 6
+2. SW5 -1 to 5 : Function Switch
EI
WIRING SPECIFICATIONS
8
8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
Simultaneous twin system
L2
GR
L2
GR
S1
S1
S1
S1
S2
S2
S2
S2
S2
S3
S3
S3
S3
S3
1
2
1
2
S1
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Indoor unit earth
L1
L1
1
2
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
PLA-A18, 30
PKA
–
1A
15A
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Circuit
rating
Wiring
Wire No. %
size
Outdoor unit model
Outdoor unit power supply
Breaker size
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit earth
Remote controller-Indoor unit
Outdoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
PLA-A36
–
2A
15A
HA30, 36
Single, 208/230 V, 60 Hz
30A
28A
40A
2 % Min. AWG 10
1 % Min. AWG 10
3 % AWG 16 (polar)
1 % Min. AWG 16
2 % AWG 22 (Non-polar)
AC 208/230 V
AC 208/230 V
DC 24 V
DC 12 V
*1
*1
*2
*3
*3
*3
*3
*1. Max. 45 m, 147 ft
If AWG13 used, Max. 50m, 164ft
If AWG13 used and S3 separated, Max. 80m, 262ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max 1500 ft
*3. The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Notes: 1.Wiring size must comply with the applicable local and national code.
2.Use copper supply wires.
3.Use wires rated 600V or more for the power supply cables and the indoor/outdoor unit connecting cables.
4.Install an earth longer than other cables.
208/230V
Single phase
Isolator
3 poles isolator
S1
S1
A-Control S2
Outdoor Unit
S2
S3
S3
A-Control
Indoor Unit
Warning:
In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line
and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is
energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type .
12
8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
* The optional indoor power supply terminal kit is required.
L1
L2
GR
S1
S2
S3
L1
L2
GR
S1
S2
S3
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Indoor unit power supply
Option
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Indoor unit power supply
Option
1
2
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Simultaneous twin system
L1
L2
GR
S1
S2
S3
L1
L2
GR
L1
L2
GR
S1
S2
S3
S1
S2
S3
1
2
1
2
*Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
If the indoor and outdoor units have separate power supplies, refer to the table below.
Change the indoor unit electrical box wiring refering to the figure in the right and
the DIP switch settings of the outdoor unit control board.
Connectors (connections when shipped
from the factory are for indoor unit power
supplied from outdoor unit)
Indoor unit specifications
Required
Label affixed near each wiring diagram
for the indoor and outdoor units
Required
ON
OFF
S1
S2
S3
3
1
2
(SW8)
CND/CN01
Indoor unit
control board
Indoor unit power supplied from outdoor unit
(when shipped from factory)
* There are three types of labels (labels A, B, and C). Affix the appropriate labels to
the units according to the wiring method.
Connectors
L1
L2
GR
S1
S2
S3
BLUE YELLOW
YELLOW BLUE
Outdoor unit DIP switch settings (when
using separate indoor unit/outdoor unit
power supplies only)
L1
L2
GR
BLUE YELLOW
BLUE YELLOW
Indoor unit electrical box connector connection change
If the indoor and
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
figure.
CND/CN01
Indoor unit
control board
Separate indoor unit/outdoor unit power
supplies
Indoor unit model
Circuit
rating
Wiring
Wire No. % size
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit earth
Remote controller-Indoor unit
Indoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1
*2
*3
*3
*3
*3
PLA-A12, 18, 24, 30
PKA, PCA
Single 208/230 V, 60 Hz
1A
15A
2 % Min. AWG16
1 % Min. AWG16
2 % AWG22 (polar)
–
2 % AWG22 (Non-polar)
AC 208/230 V
–
DC24 V
DC12 V
*1. Max. 50 m, 165 ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft
*3. The figures are NOT always against the ground.
Notes: 1.
2.
3.
4.
Wiring size must comply with the applicable local and national code.
Use copper supply wires.
Use wires rated 300V or more for the power supply cables.
Install an earth longer than other cables.
13
PLA-A36, 42
Single 208/230 V, 60 Hz
2A
15A
2 % Min. AWG16
1 % Min. AWG16
2 % AWG22 (polar)
–
2 % AWG22 (Non-polar)
AC 208/230 V
–
DC24 V
DC12 V
8-3. INDOOR – OUTDOOR CONNECTING CABLE
Outdoor power supply
Indoor unit-Outdoor unit
Wire No. % Size
Max. 45m, 147ft
Max. 50m, 164ft
3 % AWG15 (polar) 3 % AWG13 (polar)
Max. 80m, 262ft
3 % AWG13 (polar) and S3 separated
+ The Max. cable length may vary according to the condition of installation, humidity or materials, etc.
Wire No. % Size
Indoor/Outdoor separate
power supply
Max. 120m, 393ft
Indoor unit-Outdoor unit
2 % Min. AWG22
+ The optional indoor power supply terminal kit is necessary.
Be sure to connect the indoor-outdoor connecting cables directly to the units without intermediate connections.
Intermediate connections can lead to communication errors if water enters the cables and causes insufficient
insulation to ground or a poor electrical contact at the intermediate connection point.
14
8-4. M-NET WIRING METHOD
(Points to notice)
(1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from
making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same
conduit tube.
(2) Terminal block (TB7) for transmission wires should never be connected to 208/230V power supply. If it is connected,
electronic parts on M-NET P.C. board may be burnt out.
(3) Use 2-core x 1.25mm2 [AWG16] shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be
sent or received normally if different types of transmission wires are put together in the same multi-conductor cable. Never
do this because this may cause a malfunction.
Group
remote
controller
Power
supply
unit for
transmission
wire
Refrigerant
address 00
M-NET
address 01
Refrigerant
address 00
M-NET
address 02
A-control
A-control
remote
remote
controller
controller
It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the
Refrigerant
address 00
M-NET
address 03
A-control
remote
controller
wiring for A-control.
(4) Ground only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to
the influence of electromagnetic noise.
“Ed” error will appear on the LED display of outdoor unit.
“0403” error will appear on the central-control remote controller.
×Bad example (Multi spot grounding of shield wire)
Central
remote
controller
Power
supply
appliance
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET transmission wire
Good example 1 (Single spot grounding of shield wire)
Central
remote
controller
Power
supply
appliance
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET transmission wire
Good example 2 (Single spot grounding of shield wire)
Central
remote
controller
Power
supply
appliance
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET transmission wire
If there are more than 2 grounding spots on the shield wire, noise may enter into the shield wire because the ground wire
and shield wire form one circuit and the electric potential difference occurs due to the impedance difference among grounding spots. In case of single spot grounding, noise does not enter into the shield wire because the ground wire and shield
wire do not form 1 circuit.
To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in the
installation manual.
15
M-NET wiring
(1) Use 2-core x 1.25mm2 [AWG16] shield wire for electric wires.
(Excluding the case connecting to system controller.)
(2) Connect the wire to the M-NET terminal block. Connect one core of the
non-polar transmission wire to A terminal and the other to B. Peel the
shield wire, twist the shield part to a string and connect it to S terminal.
(3) In the system which several outdoor units are being connected, the terminal
(A(M1), B(M2), S) on M-NET terminal block should be individually wired to the other
outdoor unit’s terminal, i.e. A to A, B to B and S to S. In this case, choose one of those
to fix an ground wire on the plate as shown on the right figure.
M-NET
terminal
block
Ground
wire
A
B
S
Transmission Shield
wire part
outdoor units and drive a screw
8-4-1. M-NET address setting
In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to CITY MULTI
series, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the
setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as
that of the indoor unit in CITY MULTI system), and the address number should be consecutively set in a same group.
90 1
90 1
90 1
90 1
78
789
90 1
456
23
78
~
23
456
23
78
0 1
23
456
50
23
456
2
234
456
78
8-4-2. Refrigerant address setting
1
56
SW11
ones
Switching digit
setting SW12
tens
digit
78
<Setting example> M-NET Address No.
Address number can be set by using rotary switches
(SW11 for ones digit and SW12 for tens digit), which
is located on the M-NET board of outdoor unit.
(Initial setting: all addresses are set to “0”.)
In case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remote
controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group setting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller board. [Initial setting: all
switches are OFF. (All refrigerant addresses are “00”.)]
ON
ON
OFF
Refrigerant
address
ON
OFF
1 2 3 4 5 6
0
ON
1 2 3 4 5 6
ON
9
8
ON
10
11
12
13
7
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
6
ON
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
5
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
4
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
3
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
2
ON
OFF
OFF
ON
OFF
1 2 3 4 5 6
1
ON
ON
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
1 2 3 4 5 6
14
15
8-4-3. Regulations in address settings
In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.
Group A
System
controller
Power
supply
unit for
transmission
wire
Group B
Refrigerant
address 00
M-NET
address 01
Group C
Refrigerant
address 00
M-NET
address 02
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 00
M-NET
address 04
TB5
A-control
remote
controller
A-control
remote
controller
A-control
remote
controller
w Refrigerant addresses can be overlapped if they are in the different group.
Group A
System
controller
Power
supply
unit for
transmission
wire
Refrigerant
address 00
M-NET
address 01
Group B
Refrigerant
address 01
M-NET
address 02
Refrigerant
address 00
M-NET
address 04
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 02
M-NET
address 05
TB5
A-control
remote
controller
A-control
remote
controller
w In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As
“03” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in
the group for the outdoor unit whose refrigerant address is “00”.
16
9
REFRIGERANT SYSTEM DIAGRAM
PUZ-HA30NHA
PUZ-HA36NHA
unit : mm(inch)
Heat exchanger
Refrigerant
GAS pipe
connection
:15.88(5/8)
Thermistor
TH6
(Outdoor
2-phase pipe)
Solenoid valve
(Four-way valve)
Ball valve
Strainer
#50
Charge plug
(High pressure)
Charge plug
(Low pressure)
Muffler
Low pressure
switch 63L
Thermistor TH3
(Outdoor pipe)
High pressure
switch 63H
Thermistor
TH32
(Outdoor pipe)
Strainer
#100
Strainer
#100
Linear
expansion valve B
Refrigerant
LIQUID pipe
connection
:9.52
Strainer
(3/8)
#100
Stop valve
(with service port)
Thermistor TH7
(Outdoor)
Distributor
Thermistor TH33
(Outdoor pipe)
Strainer
#100
Thermistor TH4
(Discharge)
Linear expansion valve A
Strainer
#100
Compressor
Power
receiver
Linear
expansion valve C
Bypass
valve
Injection port
Heat interchange circuit
Replace
filter
Restrictor
Strainer
valve
#100
Refrigerant flow in cooling
Refrigerant flow in heating
Refrigerant recovering (pump down)
Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit.
1Turn on the power supply (circuit breaker).
wWhen power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If
“CENTRALLY CONTROLLED” is displayed, the refrigerant recovering (pump down) cannot be completed normally.
2After the liquid stop valve is closed, set the SWP switch on the control board of the outdoor unit to ON. The compressor
(outdoor unit) and ventilators (indoor and outdoor units) start operating and refrigerant collecting operation begins. LED1 and
LED2 on the control board of the outdoor unit are lit.
wSet the SWP switch (push-button type) to ON in order to perform refrigerant recovering operation only when the unit is
stopped. However, refrigerant recovering operation cannot be performed until compressor stops even if the unit is stopped.
Wait 3 minutes until compressor stops and set the SWP switch to ON again.
3Because the unit automatically stops in about 2 to 3 minutes after the refrigerant collecting operation (LED1 is not lit and
LED2 is lit), be sure to quickly close the gas stop valve.
wIn case the outdoor unit is stopped when LED1 is lit and LED2 is not lit, open the liquid stop valve completely, and then
repeat step 2 3 minutes later.
wIf the refrigerant collecting operation has been completed normally (LED1 is not lit and LED2 is lit), the unit will remain
stopped until the power supply is turned off.
4Turn off the power supply (circuit breaker).
17
10
TROUBLESHOOTING
10-1. TROUBLESHOOTING
<Error code display by self-diagnosis and actions to be taken for service (summary)>
Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit.
Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the
table below. Check the contents below before investigating details.
Unit conditions at service
Error code
Actions to be taken for service (summary)
Displayed
Judge what is wrong and take a corrective action according
to “10-4. Self-diagnosis action table”.
The trouble is reoccurring.
Not displayed
Logged
Conduct trouble shooting and ascertain the cause of the
trouble according to “10-5. Troubleshooting by inferior
phenomena”.
Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise and etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, when the trouble
occurred, matters related to wiring and etc.
Reset error code logs and restart the unit after finishing
service.
There is no abnormality concerning of parts such as
electrical component, controller board, remote controller
and etc.
The trouble is not reoccurring.
Not logged
Re-check the abnormal symptom.
Conduct trouble shooting and ascertain the cause of the
trouble according to “10-5. Troubleshooting by inferior
phenomena”.
Continue to operate unit for the time being if the cause
is not ascertained.
There is no abnormality concerning of parts such as
electrical component, controller board, remote controller
and etc.
10-2. CHECK POINT UNDER TEST RUN
(1) Before test run
• After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leakage, loosened connections and incorrect polarity.
• Measure impedance between the ground and the power supply terminal block (L1, L2) on the outdoor unit by 500V Megger
and check that it is 1.0M" or over.
wDon’t use 500V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block
(1, 2). This may cause malfunction.
• Make sure that test run switch (SW4) is set to OFF before turning on power supply.
• Turn on power supply 12 hours before test run in order to protect compressor.
• For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes
of settings referring to the description of “Selection of Functions through Remote Controller”.
Make sure to read operation manual before test run. Especially items to secure safety.
18
Operating procedures
"TEST RUN" and the currently selected
operation mode are displayed altemately.
1. Turn on the main power supply.
Displays the remaining
test run time.
2. Press TEST button twice.
The TEST RUN appears on the screen.
3. Press OPERATION SWITCH
button.
Cooling mode: Check if cool air blows and water is drained.
Heating mode: Check if warm air blows. (It takes a little
while until warm air blows.)
F
4. Press AIR DIRECTION button. Check for correct motion of auto-vanes.
5. Check the outdoor unit fan for
correct running.
While the room temperature display on the remote
controller is “PLEASE WAIT”, the remote controller is disabled.
Wait until “PLEASE WAIT” disappears before using remote controller.
“PLEASE WAIT” appears for about 2 minutes after power
supply is turned on. +1
[TEST] button
The outdoor unit features automatic capacity control to
provide optimum fan speeds. Therefore, the fan keeps
running at a low speed to meet the current outside air
condition unless it exceeds its available maximum power.
Then, in actuality, the fan may stop or run in the reverse
direction depending on the outside air, but this does not
mean malfunction.
6. Press the ON/OFF button to reset the test run in progress.
7. Register the contact number.
Pipe (liquid) temperature
• In case of test run, the OFF timer will be activated, and the test run will automatically stop after 2 hours.
• The room temperature display section shows the pipe temperature of indoor units during the test run.
• Check that all the indoor units are running properly in case of simultaneous twin operation. Malfunctions may not be displayed regardless of incorrect wiring.
w1 After turning on the power supply, the system will go into startup mode, “PLEASE WAIT” will blink on the display section of
the room temperature, and lamp (green) of the remote controller will blink.
As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the
address is not 0. LED3 will blink.
As to OUTDOOR BOARD LED, LED1 (green) and LED2 (red) will be lit up. (After the startup mode of the system finishes,
LED2(red) will be turned off.)
and
will be displayed alternately every second.
In case OUTDOOR BOARD LED is digital display,
• If one of the above operations does not function correctly, the causes written below should be considered. Find causes from
the symptoms.
The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.
Symptoms in test run mode
OUTDOOR BOARD LED Display
Remote Controller Display
< > indicates digital display.
After “startup” is displayed, only
Remote controller displays “PLEASE
green lights up. <00>
WAIT”, and cannot be operated.
After “startup” is displayed,
green (once) and red (once)
After power is turned on, “PLEASE WAIT” blink alternately. <F1>
is displayed for 3 minutes, then error code
After “startup” is displayed,
is displayed.
green (once) and red (twice)
blink alternately. <F3, F5, F9>
After “startup” is displayed,
green (twice) and red (once)
No display appears even when remote
blink alternately. <EA. Eb>
controller operation switch is turned on.
After “startup” is displayed, only
(Operation lamp does not light up.)
green lights up. <00>
Display appears but soon disappears
even when remote controller is operated.
w Press the remote controller’s
display.
LCD
P1
P2
P4
P5
P6
P8
P9
Fb
After “startup” is displayed, only
green lights up. <00>
CHECK
Cause
• After power is turned on, “PLEASE WAIT” is displayed for 2
minutes during system startup. (Normal)
• Incorrect connection of outdoor terminal block (L1, L2, and
S1, S2, S3.)
• Outdoor unit’s protection device connector is open.
• Incorrect wiring between the indoor and outdoor unit (Polarity
is wrong for S1, S2, S3.)
• Remote controller transmission wire short
• There is no outdoor unit of address 0.
(Address is other than 0.)
• Remote controller transmission wire open
• After cancelling function selection, operation is not possible for
about 30 seconds. (Normal)
button twice to perform self-diagnosis. See the table below for the contents of LCD
Contents of inferior phenomena
Abnormality of room temperature thermistor
Abnormality of pipe temperature thermistor/Liquid
Abnormality of drain sensor/Float switch connector open
Drain overflow protection is working.
Freezing/overheating protection is working.
Abnormality of pipe temperature
Abnormality of pipe temperature thermistor/Cond./Eva
Abnormality of indoor controller board
LCD
U1~UP
F3~F9
E0~E5
E6~EF
---FFFF
PA
Contents of inferior phenomena
Malfunction outdoor unit
Malfunction outdoor unit
Remote controller transmitting error
Indoor/outdoor unit communication error
No error history
No applied unit
Forced compressor stop(due to water leakage abnormality)
See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.
LED1 (microcomputer power supply)
LED2 (remote controller)
Lits when power is supplied.
Lits when power is supplied for wired remote controller.
The indoor unit should be connected to the outdoor unit with address “0” setting.
LED3 (indoor/outdoor communication)
Blinks when indoor and outdoor unit are communicating.
19
Test run [for wireless remote controller]
COOL
Measure an impedance between the power supply terminal block on
the outdoor unit and ground with a 500V Megger and check that it is
equal to or greater than 1.0M".
1 Turn on the main power to the unit.
TEST
RUN
2 Press the TEST RUN button twice continuously.
(Start this operation from the turned off status of remote controller
display.)
TEMP
ON/OFF
TEST RUN
and current operation mode are displayed.
MODE
3 Press the
(
) button to activate COOL mode, then
check whether cool air is blown out from the unit.
FAN
MODE
,
VANE
AUTO STOP
AUTO START
CHECK LOUVER
min
TEST RUN
SET
h
RESET
CLOCK
4 Press the MODE (
) button to activate HEAT mode, then
check whether warm air is blown out from the unit.
FAN
5 Press the
from the unit.
button and check whether strong air is blown out
VANE
button and check whether the auto vane operates
6 Press the
properly.
7 Press the ON/OFF button to stop the test run.
Note:
• Point the remote controller towards the indoor unit receiver
while following steps 2 to 7.
• It is not possible to run in FAN, DRY or AUTO mode.
Start and finish of test run [For outdoor controller board]
• Operation from the indoor unit
Execute the test run using the installation manual for the indoor unit.
• Operation from the outdoor unit
By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation
mode (cooling/heating) can be set up.
1Set the operation mode (cooling/heating) using SW4-2.
2Turn on SW4-1 to start test run with the operation mode set by SW4-2.
<SW4>
3Turn off SW4-1 to finish the test run.
• There may be a faint knocking sound around the machine room after power is supplied,
but this is no problem with product because the linear expansion pipe is just moving to
adjust opening pulse.
• There may be a knocking sound around the machine room for several seconds after compressor starts operating. But this is not a problem with product because the check valve
itself generates the sound because pressure difference is small in the refrigerant circuit.
ON
OFF
1
2
Stop
Operation
Cooling Heating
Note:
The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1,
change the operation mode and restart the test run by SW4-1.)
20
10-3. HOW TO PROCEED "SELF-DIAGNOSIS"
10-3-1. When a Problem Occurs During Operation
If a problem occurs in the air conditioner, the indoor and outdoor units will
stop, and the problem is shown in the remote controller display.
[CHECK] and the refrigerant address are displayed on the temperature
display, and the error code and unit number are displayed alternately as
shown below. If the outdoor unit is malfunctioning, the unit number will
be "00".
In case of group control, for which remote controller controls multiple
refrigerant systems, the refrigerant address and error code of the unit
that first experienced trouble (i.e., the unit that transmitted the error
code) will be displayed.
To clear the error code, press the
ON/OFF button.
(Alternating Display)
Error code (2 or 4 digits)
Address (3 digits) or unit number (2 digits)
When using remote-/local-controller combined operation, cancel the error code after turning off remote operation. Under
central control by a MELANS controller, cancel the error code by pressing the
ON/OFF button.
10-3-2. Self-Diagnosis During Maintenance or Service
Since each unit has a function that stores error codes, the latest check code can be recalled even if it is cancelled by the remote
controller or power is turned off.
Check the error code history for each unit using the remote controller.
Switch to self-diagnosis mode.
Set the unit number or refrigerant address you want to diagnose.
Press the [TEMP] buttons (
Press the CHECK
button twice within 3 seconds. The display content
will change as shown below.
and
) to select the desired number
or address. The number (address) changes between [01] and [50] or [00]
and [15].
The refrigerant address will begin to blink
approximately 3 seconds after being
selected and the self-diagnosis process will begin.
Unit number or refrigerant address
to be diagnosed
Display self-diagnosis results.
<When there is error code history>
For the definition of each error code, refer to the indoor unit's installation manual or service handbook.
(Alternating Display)
Error code (2 or 4 digits)
Address (3 digits) or unit number (2 digits)
<When there is no error code history>
Reset the error history.
Display the error history in the diagnosis result display screen (see step ).
21
<When there is no corresponding unit>
Press the
ON/OFF button twice within 3 seconds. The self-diagnosis
address or refrigerant address will blink.
When the error history is reset, the display will look like the one shown below.
However, if you fail to reset the error history, the error content will be displayed again.
Cancel self-diagnosis.
Self-diagnosis can be cancelled by the following 2 methods.
Press the
CHECK
Press the
button twice within 3 seconds.
ON/OFF button.
→ Self-diagnosis will be cancelled and the screen will return to the previous state in effect before the start
of self-diagnosis.
→ Self-diagnosis will be cancelled and the indoor unit will stop.
10-3-3. Remote Controller Diagnosis
If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as below.
First, check that the power-on indicator is lit.
If the correct voltage (DC12 V) is not supplied to the remote controller, the
indicator will not light.
If this occurs, check the remote controller's wiring and the indoor unit.
Power on indicator
Switch to the remote controller self-diagnosis mode.
Press the CHECK
button for 5 seconds or more. The display content will
Press the FILTER button to start self-diagnosis.
change as shown below.
Remote controller self-diagnosis result
[When the remote controller is functioning correctly]
[When the remote controller malfunctions]
(Error display 1) "NG" blinks. → The remote controller's transmitting-receiving circuit is defective.
Check for other possible causes, as there is no problem with the remote
controller.
The remote controller must be replaced with a new one.
[Where the remote controller is not defective, but cannot be operated.]
(Error display 2) [E3], [6833] or [6832] blinks. → Transmission is not possible.
There might be noise or interference on the transmission path, or the indoor unit
or other remote controllers are defective. Check the transmission path and other
controllers.
(Error display 3) "ERC" and the number of data errors are displayed.
→ Data error has occurred.
The number of data errors is the difference between the number of bits sent from
the remote controller and the number actually transmitted through the transmission path. If such a problem is occurring, the transmitted data is affected by noise,
etc. Check the transmission path.
When the number of data errors is "02":
Transmission data from remote controller
Transmission data on transmission path
To cancel remote controller diagnosis
Press the
CHECK button for 5 seconds or more. Remote controller diagnosis will be cancelled, "PLEASE WAIT" and operation lamp will blink. After
approximately 30 seconds, the state in effect before the diagnosis will be restored.
22
10-3-4. Malfunction-diagnosis method by wireless remote controller
<In case of trouble during operation>
When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform
unusual stop.
<Malfunction-diagnosis method at maintenance service>
[Procedure]
Refrigerant
address
display
CHECK
CHECK
display
Temperature
button
TEMP
ON/OFF
1. Press the CHECK button twice.
• "CHECK" lights, and refrigerant
address "00" blinks.
• Check that the remote controller's
display has stopped before continuing.
2. Press the temperature
buttons.
• Select the refrigerant address of the
indoor unit for the self-diagnosis.
Note: Set refrigerant address using the
outdoor unit’s DIP switch (SW1).
(For more information, see the
outdoor unit installation manual.)
ON/OFF
button
MODE
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
CHECK
button
min
TEST RUN
SET
h
RESET
CLOCK
HOUR
button
3. Point the remote controller at the • If an air conditioner error occurs, the
sensor on the indoor unit and
indoor unit's sensor emits an intermitpress the HOUR button.
tent buzzer sound, the operation lamp
blinks, and the error code is output.
(It takes 3 seconds at most for error
code to appear.)
4. Point the remote controller at the • The check mode is cancelled.
sensor on the indoor unit and
press the ON/OFF button.
23
• Refer to the following tables for details on the check codes.
[Output pattern A]
Beeper sounds
OPERATION
INDICATOR
lamp blink
pattern
Beep
Beep Beep Beep
Off
Beep
1st
2 nd
3 rd
nth
On
On
On
On
Beep Beep
1st
Off
On
2 nd · · · Repeated
On
0.5 sec. Approx. 2.5 sec. 0.5 sec. 0.5 sec.
Self-check Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
starts
(Start signal
Number of blinks/beeps in pattern indicates the check
Number of blinks/beeps in pattern indicates
received)
code in the following table (i.e., n=5 for “P5”)
the check code in the following table
[Output pattern B]
Beeper sounds
OPERATION
INDICATOR
lamp blink
pattern
Beep
Beep Beep Beep
1st
Off
On
Approx. 3 sec.
Self-check Approx. 2.5 sec.
starts
(Start signal
received)
2nd
Beep
Beep
nth
1st
3 rd
On
On
On
0.5 sec. 0.5 sec. 0.5 sec.
On
Off
0.5 sec. Approx. 2.5 sec.
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “U2”)
On
Approx. 3 sec.
Beep
2 nd · · · Repeated
On
On
0.5 sec. 0.5 sec.
Number of blinks/beeps in pattern indicates
the check code in the following table
[Output pattern A] Errors detected by indoor unit
Wireless remote controller Wired remote controller
Beeper sounds/OPERATION
Symptom
INDICATOR lamp blinks
Check code
(Number of times)
Intake sensor error
1
P1
Pipe (TH2) sensor error
P2
2
Pipe (TH5) sensor error
P9
Indoor/outdoor unit communication error
3
E6,E7
Drain sensor error/Float switch connector open
4
P4
Drain pump error
P5
5
Forced compressor stop (due to water leakage abnormality)
PA
Freezing/Overheating protection operation
6
P6
Communication error between indoor and outdoor units
7
EE
Pipe temperature error
8
P8
Remote controller signal receiving error
9
E4, E5
–
–
10
–
–
11
Indoor unit control system error (memory error, etc.)
12
Fb
E0, E3
Remote controller transmission error
–
–
E1, E2
Remote controller control board error
Remark
As for indoor
unit, refer to
indoor unit's
service manual.
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote controller Wired remote controller
Beeper sounds/OPERATION
Symptom
INDICATOR lamp blinks
Check code
(Number of times)
Indoor/outdoor unit communication error
E9
1
(Transmitting error) (Outdoor unit)
Compressor overcurrent interruption
2
UP
Open/short of outdoor unit thermistors
3
U3,U4
Compressor overcurrent interruption (When compressor locked)
4
UF
5
U2
6
U1,Ud
7
8
9
U5
U8
U6
11
U9,UH
Abnormal high discharging temperature/insufficient refrigerant
Abnormal high pressure (63H worked)/Overheating
protection operation
Abnormal temperature of heatsink
Outdoor unit fan protection stop
Compressor overcurrent interruption/Abnormal of power module
Abnormality such as overvoltage or voltage shortage and
abnormal synchronous signal to main circuit/Current sensor error
–
–
Other errors
Remark
For details, check
the LED display
of the outdoor
controller board.
–
12
–
13
Others
14
*1 If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and
the OPERATION INDICATOR lamp does not come on, there are no error records.
*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to confirm
the self-check start signal was received, the specified refrigerant address is incorrect.
24
10-4. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is turned on>
Error Code
Abnormal point and detection method
(Note) Refer to indoor unit section for code P and code E. (P.30~32)
Case
Judgment and action
1 No voltage is supplied to termi- 1 Check following items.
nal block (TB1) of outdoor unit.
a) Power supply breaker
a) Power supply breaker is
b) Connection of power supply terminal
turned off.
block (TB1)
b) Contact failure or disconnecc) Connection of power supply terminal
tion of power supply terminal
block (TB1)
c) Open phase (L1 or L2
phase)
None
—
2 Electric power is not charged
to power supply terminal of
outdoor power circuit board.
a) Contact failure of power
supply terminal
b) Open phase on the outdoor
power circuit board
Disconnection of connector
TABT or TABS
2 Check following items.
a) Connection of power supply terminal
block (TB1)
b) Connection of terminal on outdoor
power circuit board
Disconnection of connector TABT or
TABS
Refer to 10-9.
3 Electric power is not supplied
to outdoor controller circuit
board.
a) Disconnection of connector
(CNDC)
3 Check connection of the connector (CNDC)
on the outdoor controller circuit board.
Check connection of the connector, CNDC,
on the outdoor power circuit board. Refer to
10-9.
4 Disconnection of reactor (DCL) 4 Check connection of reactor. (DCL)
Check connection of “L1” and “L2” on the
active filter module. (ACTM)
Refer to 10-9.
5 Disconnection of outdoor noise 5 a) Check connection of outdoor noise filter
filter circuit board or parts failcircuit board.
ure in outdoor noise filter circuit
b) Replace outdoor noise filter circuit board.
board
Refer to 10-9.
It is especially needed to check
the resistance RS1 on the
noise filter circuit board.
6 Defective outdoor power circuit 6 Replace outdoor power circuit board.
board
7 Defective outdoor controller
circuit board
F3
(5202)
7 Replace controller board (When items
above are checked but the units cannot be
repaired).
63L connector open
1 Disconnection or contact failure 1 Check connection of 63L connector on
Abnormal if 63L connector circuit is open
outdoor controller circuit board.
of 63L connector on outdoor
for 3 minutes continuously after power supRefer to 10-9.
controller circuit board
ply.
2 Disconnection or contact failure 2 Check the 63L side of connecting wire.
63L: Low-pressure switch
of 63L
3 63L is working due to refriger- 3 Check refrigerant pressure.
Charge additional refrigerant.
ant leakage or defective parts.
Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
4 Defective outdoor controller
circuit board
25
Error Code
F5
(5201)
F9
(4119)
EA
(6844)
Eb
(6845)
EC
(6846)
Abnormal point and detection method
Case
Judgment and action
63H connector open
1 Disconnection or contact failure
Abnormal if 63H connector circuit is open
of 63H connector on outdoor
for 3 minutes continuously after power supcontroller circuit board
ply.
2 Disconnection or contact failure
63H: High-pressure switch
of 63H
3 63H is working due to defective
parts.
4 Defective outdoor controller
circuit board
1 Check connection of 63H connector on
outdoor controller circuit board.
Refer to 10-9.
2 Check the connecting wire of 63H connector.
2 connector open
1 Disconnection or contact failure
Abnormal if both 63H and 63L connector
of connector (63H,63L) on
circuits are open for 3 minutes continuously
outdoor controller circuit board.
after power supply.
2 Disconnection or contact failure
of 63H, 63L
63H: High-pressure switch
3 63H and 63L are working due
63L: Low-pressure switch
to defective parts.
4 Defective outdoor controller
board
1 Check connection of connector (63H,63L) on
outdoor controller circuit board.
Refer to 10-9.
2 Check the connecting wire of 63H and 63L
connector.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
Indoor/outdoor unit connector
miswiring, excessive number of units (4
units or more)
1. Outdoor controller circuit board can
automatically check the number of
connected indoor units. Abnormal if the
number cannot be checked automatically
due to miswiring of indoor/outdoor unit
connecting wire and etc. after power is
turned on for 4 minutes.
2. Abnormal if outdoor controller circuit
board recognizes the number of
connected indoor units as “4 units or
more”.
1 Contact failure or miswiring of
indoor/outdoor unit connecting
wire
2 Diameter or length of indoor/
outdoor unit connecting wire is
out of specified capacity.
3 4 or more indoor units are
connected to 1 outdoor unit.
4 Defective transmitting receiving
circuit of outdoor controller
circuit board
5 Defective transmitting receiving
circuit of indoor controller board
6 Defective indoor power board
7 2 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8 Noise has entered into power
supply or indoor / outdoor unit
connecting wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
1 Check disconnection or looseness or polarity of indoor/outdoor unit connecting wire of
indoor and outdoor units.
2 Check diameter and length of indoor/outdoor
unit connecting wire.
Total wiring length: 80m
(including wiring connecting each indoor unit
and between indoor and outdoor unit)
Also check if the connection order of flat
cable is S1, S2, S3.
3 Check the number of indoor units that are
connected to one outdoor unit. (If EA is
detected)
4~6 Turn the power off once, and on again to
check.
Replace outdoor controller circuit board,
indoor controller board or indoor power
board if abnormality occurs again.
Miswiring of indoor/outdoor unit
connecting wire (converse wiring or disconnection)
Outdoor controller circuit board can
automatically set the unit number of indoor
units.
Abnormal if the indoor unit number cannot be set within 4 minutes after power on
because of miswiring (converse wiring or
disconnection) of indoor/outdoor unit connecting wire.
1 Contact failure or miswiring of 7 Check if refrigerant addresses (SW1-3 to
indoor/outdoor unit connecting
SW1-6 on outdoor controller circuit board)
wire
are overlapping in case of group control
2 Diameter or length of indoor/
system.
outdoor unit connecting wire is
out of specified capacity.
8 Check transmission path, and remove the
4 Defective transmitting receiving
cause.
circuit of outdoor controller circuit
board
w The descriptions above 1-8 are for EA, Eb
5 Defective transmitting receiving
and EC.
circuit of indoor controller board
6 Defective indoor power board
7 2 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8 Noise has entered into power
supply or indoor/outdoor unit
connecting wire.
Start-up time over
The unit cannot finish start-up process
within 4 minutes after power on.
1 Contact failure of indoor/
outdoor unit connecting wire
2 Diameter or length of indoor/
outdoor unit connecting wire is
out of specified capacity.
7 2 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8 Noise has entered into power
supply or indoor/outdoor unit
connecting wire.
26
<Abnormalities detected while unit is operating>
Error Code
Abnormal point and detection method
High pressure (High-pressure switch
63H worked)
Abnormal if high-pressure switch 63H
worked ( w ) during compressor operation.
w 4.15 MPa [602PSIG]
63H: High-pressure switch
U1
(1302)
High discharging temperature
(1) Abnormal if discharge temperature
thermistor (TH4) exceeds 125:
[257˚F] or 110: [230˚F] continuously
for 5 minutes.
Abnormal if condenser/evaporator
temperature thermistor (TH5) exceeds
40: [104˚F] during defrosting and
discharge temperature thermistor (TH4)
exceeds 110: [230˚F].
U2
(1102)
(2) Abnormal if discharge superheat
(Cooling: TH4 – TH5 / Heating: TH4 –
TH6) exceeds 70 degC [126degF].
Case
1 Short cycle of indoor unit
2 Clogged filter of indoor unit
3 Decreased airflow caused by
dirt of indoor fan
4 Dirt of indoor heat exchanger
5 Locked indoor fan motor
6 Malfunction of indoor fan motor
7 Defective operation of stop
valve (Not full open)
8 Clogged or broken pipe
9 Locked outdoor fan motor
0 Malfunction of outdoor fan
motor
1 Short cycle of outdoor unit
2 Dirt of outdoor heat exchanger
3 Decreased airflow caused by
defective inspection of outside
temperature thermistor
(It detects lower temperature
than actual temperature.)
4 Disconnection or contact failure
of connector (63H) on outdoor
controller board
5 Disconnection or contact failure
of 63H connection
6 Defective outdoor controller
board
7 Defective action of linear
expansion valve
8 Malfunction of fan driving
circuit
Judgment and action
1~6Check indoor unit and repair defect.
7 Check if stop valve is fully open.
8 Check piping and repair defect.
9~2 Check outdoor unit and repair defect.
3 Check the detected temperature of outside
temperature thermistor on LED display.
(SW2 on A-Control Service Tool : Refer to
10-10.)
4~6 Turn the power off and check F5 is
displayed when the power is on again.
When F5 is displayed, refer to “Judgment
and action” for F5.
7 Check linear expansion valve.
Refer to 10-6.
8 Replace outdoor controller board.
1 Overheated compressor opera- 1 Check intake superheat.
tion caused by shortage of
Check leakage of refrigerant.
refrigerant
Charge additional refrigerant.
2 Defective operation of stop
2 Check if stop valve is fully open.
valve
3 Defective thermistor
34 Turn the power off and check if U3 is displayed when the power is on again.
4 Defective outdoor controller
board
When U3 is displayed, refer to “Judgement
and action” for U3.
5 Defective action of linear
5 Check linear expansion valve.
expansion valve
Refer to 10-6.
6 Clogging with foreign objects in 6 After recovering refrigerant, remove water
refrigerant circuit.
from entire refrigerant circuit under vacuum
more than 1 hour.
wClogging occurs in the parts
which become below freezing
point when water enters in the
refrigerant circuit.
27
Error Code
U3
(5104)
Abnormal point and detection method
Open/short circuit of discharge
temperature thermistor (TH4)
Abnormal if open (3: [37˚F] or less) or
short (217: [422˚F] or more) is detected
during compressor operation.
Detection is inoperative for 10 minutes of
compressor starting process and for 10
minutes after and during defrosting.
Case
Judgment and action
1 Disconnection or contact failure 1 Check connection of connector (TH4) on the
outdoor controller circuit board.
of connector (TH4) on the outCheck breaking of the lead wire for thermisdoor controller circuit board
tor (TH4). Refer to 10-9.
2 Defective thermistor
3 Defective outdoor controller cir- 2 Check resistance value of thermistor (TH4)
or temperature by microcomputer.
cuit board
(Thermistor/TH4: Refer to 10-6.)
(SW2 on A-Control Service Tool: Refer to 10-10.)
3 Replace outdoor controller board.
Open/short of outdoor unit thermistors 1 Disconnection or contact failure
(TH3, TH32, TH33, TH6, TH7, and TH8)
of connectors
Abnormal if open or short is detected durOutdoor controller circuit
ing compressor operation.
board:
Open detection of thermistors
TH3, TH32, TH33,TH7/TH6
TH3,TH32,TH33 and TH6 is inoperative for
Outdoor power circuit board:
10 seconds to 10 minutes after compressor
CN3
starting and 10 minutes after and during
2 Defective thermistor
defrosting.
3 Defective outdoor controller cirWCheck which unit has abnormality in its
cuit board
thermistor by switching the mode of SW2.
U4,
(PAC-SK52ST) (Refer to 10-10.)
TH32,TH33
(TH3:5105)
(TH6:5107)
(TH7:5106)
(TH8:5110)
(
(
Thermistors
Symbol
Name
Thermistor <Outdoor pipe>
TH3,TH32,TH33
Thermistor <Outdoor 2-phase pipe>
TH6
Thermistor <Outdoor>
TH7
Thermistor
<Heatsink>
TH8
U7
(1520)
Open detection
Short detection
– 40[-40°F] or below
– 40[-40°F] or below
– 40[-40°F] or below
– 27[-17°F] or below
90[194°F] or above
90[194°F] or above
90[194°F] or above
102[216°F] or above
Temperature of heatsink
Abnormal if heat sink thermistor (TH8)
detects temperature indicated below.
HA30, 36 ······························ 84:, 183˚F
1 The outdoor fan motor is blocked. 12 Check outdoor fan.
2 Failure of outdoor fan motor
3 Check air flow path for cooling.
3 Air flow path is clogged.
4 Check if there is something which causes
4 Rise of ambient temperature
temperature rise around outdoor unit.
5 Defective thermistor
(Upper limit of ambient temperature is 46:
6 Defective input circuit of out[114˚F].)
door power circuit board
Turn off power, and on again to check if U5
7 Failure of outdoor fan drive circuit
is displayed within 30 minutes.
If U4 is displayed instead of U5, follow the
action to be taken for U4.
5 Check resistance value of thermistor (TH8)
or temperature by microcomputer.
(Thermistor/TH8: Refer to 10-6.)
(SW2 on A-Control Service Tool: Refer to
10-10.)
6 Replace outdoor power circuit board.
7 Replace outdoor controller circuit board.
Power module
Check abnormality by driving power module in case overcurrent is detected.
(UF or UP error condition)
1 Outdoor stop valve is closed.
2 Decrease of power supply voltage
3 Looseness, disconnection or
converse of compressor wiring
connection
4 Defective compressor
5 Defective outdoor power circuit
board
1 Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U·V·W phase) to compressor. Refer to 10-9 (Outdoor power circuit
board).
4 Check compressor referring to 10-6.
5 Replace outdoor power circuit board.
Too low superheat due to low discharge
temperature
Abnormal if discharge superheat is continuously detected less than or equal to
-15˚C[5˚F] for 3 minutes even though linear expansion valve has minimum open
pulse after compressor starts operating for
10 minutes.
1 Disconnection or loose connection of discharge
temperature thermistor (TH4)
2 Defective holder of discharge
temperature thermistor
3 Disconnection or loose connection
of linear expansion valve’s coil
4 Disconnection or loose connection of linear expansion valve’s
connector
5 Defective linear expansion valve
12 Check the installation conditions of discharge temperature thermistor (TH4).
U5
(4230)
U6
(4250)
1 Check connection of connector
(TH3,TH,32,TH33,TH7/TH6) on the outdoor
controller circuit board.
Check connection of connector (CN3) on the
outdoor power circuit board.
Check breaking of the lead wire for thermistor (TH3,TH32,TH33,TH6,TH7,TH8). Refer
to 10-9.
2 Check resistance value of thermistor (TH3,T
H32,TH33,TH6,TH7,TH8) or check temperature by microcomputer.
(Thermistor TH3,TH6,TH7,TH8 : Refer to 10-6.)
(SW2 on A-Control Service Tool: Refer to 10-10.)
3 Replace outdoor controller circuit board.
WEmergency operation is available in case of
abnormalities of TH3,TH32,TH33,TH6 and
TH7. Refer to 10-8.
28
3 Check the coil of linear expansion valve.
Refer to 10-7.
4 Check the connection or contact of LEV-A and
LEV-B on outdoor controller circuit board.
5 Check linear expansion valve.Refer to 10-6.
Error Code
U8
(4400)
Abnormal point and detection method
Overvoltage or voltage shortage and
synchronous signal to main circuit
U9
(4220)
UF
(4100)
Case
Outdoor fan motor
1 Failure in the operation of the
The outdoor fan motor is considered to be
DC fan motor
abnormal if the rotational frequency of fan 2 Failure in the outdoor circuit
motor is abnormal when detected during
controller board
operation.
Fan motor rotational frequency is abnormal if;
• 100 rpm or below detected continuously
for 15 seconds at 20: [68˚F] or more
outside air temperature
• 50 rpm or below or 1500 rpm or more
detected continuously for 1 minute.
Abnormal if any of followings are detected
during compressor operation;
• Decrease of DC bus voltage to 310V
• Instantaneous decrease of DC bus voltage to 200V
• Increase of DC bus voltage to 400V
• Decrease of input current of outdoor unit
to 0.5A only if operation frequency is
more than or equal to 40Hz or compressor current is more than or equal to 5A.
Compressor overcurrent interruption
(When compressor locked)
Abnormal if overcurrent of DC bus or
compressor is detected within 30 seconds
after compressor starts operating.
Judgment and action
1 Check or replace the DC fan motor.
2 Check the voltage of the outdoor circuit controller board during operation.
3 Replace the outdoor circuit controller board.
(when the failure is still indicated even after
performing the remedy 1 above.)
1 Decrease of power supply volt- 1 Check the facility of power supply.
age
2 Disconnection of compressor
2 Correct the wiring (U·V·W phase) to comwiring
pressor. Refer to 10-9 (Outdoor power circuit
board).
3 Defective noise filter circuit
3 Replace noise filter circuit board.
board
4 Disconnection or loose connec- 4 Check CN52C wiring.
tion of CN52C
5 Replace ACT module.
5 Defective ACT module
6 Defective ACT module drive
6 Replace outdoor power circuit board.
circuit of outdoor power circuit
board
7 Disconnection or loose connec- 7 Check CNAF wiring.
tion of CNAF
8 Defective 52C drive circuit of
8 Replace noise filter circuit board.
noise filter circuit board
9 Check CN5 wiring on the outdoor power cir9 Disconnection or loose concuit board. Refer to 10-9.
nection of CN5 on the outdoor
power circuit board
0 Disconnection or loose con0 Check CN2 wiring on the outdoor power cirnection of CN2 on the outdoor
cuit board. Refer to 10-9.
power circuit board
1 Stop valve is closed.
2 Decrease of power supply voltage
3 Looseness, disconnection or
converse of compressor wiring
connection
4 Defective compressor
1 Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U·V·W phase) to compressor.
Refer to 10-9 (Outdoor power circuit board).
4 Check compressor. Refer to 10-6.
5 Replace outdoor power circuit board.
5 Defective outdoor power board
UH
(5300)
Ud
(1504)
Current sensor error
1 Disconnection of compressor
1 Correct the wiring (U·V·W phase) to compres• Abnormal if current sensor detects –1.5A
wiring
sor. Refer to 10-9 (Outdoor power circuit
to 1.5A during compressor operation. (In
board).
test run mode, this error is ignored.)
2 Defective circuit of current sen- 2 Replace outdoor power circuit board.
sor on outdoor power circuit
board
Overheat protection
Abnormal if outdoor pipe thermistor (TH3)
detects 70:[158˚F] or more during compressor operation.
1 Defective outdoor fan (fan
motor) or short cycle of outdoor unit during coling operation
2 Defective outdoor pipe thermistor (TH3)
29
1 Check outdoor unit air passage.
23 Turn the power off and on again to check
the error code. If U4 is displayed, follow the
U4 processing direction.
Error Code
UL
(1300)
UP
(4210)
Abnormal point and detection method
E1
or
E2
Judgment and action
Abnormal low pressure (63L worked)
1 Stop valve of outdoor unit is
Abnormal if 63L worked (under -0.03MPa[closed during operation.
4PSIG]) during compressor operation.
2 Disconnection or loose connection of connector (63L) on
63L: Low-pressure switch
outdoor controller board
3 Disconnection or loose connection of 63L
4 Defective outdoor controller
board
5 Leakage or shortage of refrigerant
6 Malfunction of linear expansion
valve
1 Check stop valve.
Compressor overcurrent interruption
1 Stop valve of outdoor unit is
Abnormal if overcurrent DC bus or comclosed.
pressor is detected after compressor starts 2 Decrease of power supply voltoperating for 30 seconds.
age
3 Looseness, disconnection or
converse of compressor wiring
connection
4 Defective fan of indoor/outdoor
units
5 Short cycle of indoor/outdoor
units
6 Defective input circuit of outdoor controller board
7 Defective compressor
1 Open stop valve.
Remote controller transmission error
(E0)/signal receiving error (E4)
1 Abnormal if main or sub remote controller cannot receive normally any transmission from indoor unit of refrigerant
address “0” for 3 minutes.
(Error code : E0)
2 Abnormal if sub-remote controller could
not receive for any signal for 2 minutes.
(Error code: E0)
E0
or
E4
Case
1 Abnormal if indoor controller board can
not receive any data normally from
remote controller board or from other
indoor controller board for 3 minutes.
(Error code: E4)
2 Indoor controller board cannot receive
any signal from remote controller for 2
minutes. (Error code: E4)
1 Contact failure at transmission
wire of remote controller
2 All remote controllers are set
as “sub” remote controller.
In this case, E0 is displayed
on remote controller, and E4
is displayed at LED (LED1,
LED2) on the outdoor controller
circuit board.
3 Miswiring of remote controller
4 Defective transmitting receiving
circuit of remote controller
5 Defective transmitting receiving circuit of indoor controller
board of refrigerant address “0”.
6 Noise has entered into the
transmission wire of remote
controller.
Remote controller control board
1 Defective remote controller
1 Abnormal if data cannot be read normally from the nonvolatile memory of the
remote controller control board.
(Error code: E1)
2 Abnormal if the clock function of remote
controller cannot be operated normally.
(Error code: E2)
30
2~4 Turn the power off and on again to check
if F3 is displayed on restarting.
If F3 is displayed, follow the F3 processing direction.
5 Correct to proper amount of refrigerant.
6 Check linear expansion valve. Refer to 10-6.
2 Check facility of power supply.
3 Correct the wiring (U·V·W phase) to compressor. Refer to 10-9 (Outdoor power circuit
board).
4 Check indoor/outdoor fan.
5 Solve short cycle.
6 Replace outdoor controller circuit board.
7 Check compressor. Refer to 10-6.
W Before the replacement of the outdoor controller circuit board, disconnect the wiring to
compressor from the outdoor power circuit
board and check the output voltage among
phases, U, V, W, during test run. No defect
on board if voltage among phases (U-V, V-W
and W-U) is the same. Make sure to perform
the voltage check with the same performing
frequency.
1 Check disconnection or looseness of indoor
unit or transmission wire of remote controller.
2 Set one of the remote controllers “main”.
If there is no problem with the action above.
3 Check wiring of remote controller.
• Total wiring length: max. 500m[1640ft]
(Do not use cable o 3 or more.)
• The number of connecting indoor units:
max.16 units
• The number of connecting remote controller: max. 2 units
When the problem does not fall under 1~3,
consider 4.
4 Diagnose remote controllers.
a) When “RC OK” is displayed, remote controllers have no problem.
Turn the power off, and on again to check.
If abnormality generates again, replace
indoor controller board.
b) When “RC NG” is displayed, replace
remote controller.
c) When “RC E3” is displayed,
d) When “ERC 00-06” is displayed,
[ c),d)→Noise may be causing abnormality. ]
* If the unit is not normal after replacing
indoor controller board in group control,
indoor controller board of address “0”
may be abnormal.
1 Replace remote controller.
Error Code
E3
or
E5
Abnormal point and detection method
Case
Remote controller transmission error
(E3)/signal receiving error (E5)
1 Abnormal if remote controller could not
find blank of transmission path for 6 seconds and could not transmit.
(Error code: E3)
2 Remote controller receives transmitted
data at the same time, compares the
data, and when detecting it, judges
different data to be abnormal 30
continuous times. (Error code: E3)
1 2 remote controllers are set as
“main.” (In case of 2 remote
controllers)
2 Remote controller is connected
with 2 indoor units or more.
3 Repetition of refrigerant
address
4 Defective transmitting receiving
circuit of remote controller
5 Defective transmitting receiving
circuit of indoor controller board
1 Abnormal if indoor controller board could
not find blank of transmission path.
6 Noise has entered into trans(Error code: E5)
mission wire of remote control2 Indoor controller board receives transler.
mitted data at the same time, compares
the data,and when detecting it, judges
different data to be abnormal 30
continuous times. (Error code: E5)
Judgment and action
1 Set a remote controller to main, and the
other to sub.
2 Remote controller is connected with only one
indoor unit.
3 The address changes to a separate setting.
4~6 Diagnose remote controller.
a) When “RC OK” is displayed, remote controllers have no problem.
Turn the power off, and on again to check.
When becoming abnormal again, replace
indoor controller board.
b)When “RC NG” is displayed, replace
remote controller.
c)When “RC E3” or “ERC 00-66” is displayed, noise may be causing abnormality.
E8
(6840)
Indoor/outdoor unit communication
1 Check disconnection or looseness of indoor/
1 Contact failure of indoor/outerror (Signal receiving error)
outdoor unit connecting wire of indoor or outdoor unit connecting wire
(Outdoor unit)
door units.
2 Defective communication cirAbnormal if outdoor controller circuit board
cuit of outdoor controller circuit 2~4 Turn the power off, and on again to
could not receive anything normally for 3
check. Replace indoor controller board or
board
minutes.
outdoor controller circuit board if abnor3 Defective communication circuit
mality is displayed again.
of indoor controller board
4 Noise has entered into indoor/
outdoor unit connecting wire.
E9
(6841)
Indoor/outdoor unit communication
error (Transmitting error) (Outdoor unit)
1 Abnormal if “0” receiving is detected 30
times continuously though outdoor controller circuit board has transmitted “1”.
2 Abnormal if outdoor controller circuit
board could not find blank of transmission path for 3 minutes.
1 Indoor/ outdoor unit connecting 1 Check disconnection or looseness of indoor/
wire has contact failure.
outdoor unit connecting wire.
2 Defective communication cir2~4 Turn the power off, and on again to
cuit of outdoor controller circuit
check. Replace outdoor controller circuit
board
board if abnormality is displayed again.
3 Noise has entered power supply.
4 Noise has entered indoor/ outdoor unit connecting wire.
Non defined error code
This code is displayed when non defined
error code is received.
1 Noise has entered transmission 12 Turn the power off, and on again to check.
wire of remote controller.
Replace indoor controller board or outdoor
controller circuit board if abnormality is dis2 Noise has entered indoor/ outdoor unit connecting wire.
played again.
3 Outdoor unit is not inverter
3 Replace outdoor unit with inverter model.
model.
4 Replace remote controller with MA remote
controller.
4 Model name of remote controller is PAR-S25A.
EF
(6607
or
6608)
Ed
(0403)
Serial communication error
12 Check connection of each connector CN2
1 Breaking of wire or contact
1. Abnormal if serial communication
and CN4 between the outdoor controller
failure of connector CN2
between outdoor controller circuit board
circuit board and the outdoor power circuit
between the outdoor controller
and outdoor power circuit board is defeccircuit board and the outdoor
board.
tive.
power circuit board
2 Breaking of wire or contact
failure of connector CN4
between the outdoor controller
circuit board and the outdoor
power circuit board
3 Defective communication circuit 3 Replace outdoor power circuit board.
of outdoor power circuit board
4 Defective communication cir4 Replace outdoor controller circuit board.
cuit of outdoor controller circuit
board for outdoor power circuit
board
2. Abnormal if communication between out- 1 Breaking of wire or contact
1 Check disconnection, looseness, or breaking of
door controller circuit board and M-NET
failure of connector between
connection wire between outdoor controller cirboard is not available.
outdoor controller circuit board
cuit board (CNMNT) and M-NET board (CN5).
and M-NET board
2 Check disconnection, looseness, or breaking of
connection wire between outdoor controller cir2 Contact failure of M-NET board
power supply line
cuit board (CNMNT) and M-NET board (CND).
3 Noise has entered into M-NET 3 Check M-NET transmission wiring method.
transmission wire.
31
Error Code
Abnormal point and detection method
Case
Judgment and action
Pipe temperature
1~4 Check pipe <liquid or condenser/
1 Slight temperature difference
<Cooling mode>
evaporator> temperature with room tembetween indoor room temperaDetected as abnormal when the pipe temperature display on remote controller and
ture and pipe <liquid or conperature is not in the cooling range 3 minoutdoor controller circuit board.
denser/evaporator> temperautes after compressor start and 6 minutes
Pipe <liquid or condenser/evaporator>
ture thermistor
after the liquid or condenser/evaporator
temperature display is indicated by setting
• Shortage of refrigerant
pipe is out of cooling range.
• Disconnected holder of pipe
SW2 of outdoor controller circuit board as
Note 1) It takes at least 9 minutes to detect.
<liquid or condenser/
follows.
Note 2) Abnormality P8 is not detected in
evaporator> thermistor
drying mode.
• Defective refrigerant circuit
Conduct temperature check with outdoor
Cooling range : Indoor pipe temperature
2 Converse connection of extencontroller circuit board after connecting
(TH2 or TH5) – room temperature
sion pipe (on plural units con‘A-Control Service Tool(PAC-SK52ST)’.
(TH1) [ -3 deg [-5.4˚F]
nection)
TH: Lower temperature between liquid pipe 3 Converse wiring of indoor/
Temperature display of indoor condenser/
Temperature display of indoor liquid pipe
evaporator pipe Indoor 1
Indoor 1
temperature and condenser/
outdoor unit connecting wire
3
1
2
3
4
5
6
1
2
4
5
6
evaporator temperature
(on plural units connection)
ON
ON
4 Defective detection of indoor
OFF
OFF
<Heating mode>
room temperature and pipe
Temperature
display
of
indoor
condenser/
When 10 seconds have passed after the
Temperature display of indoor liquid pipe
<condenser/evaporator>
evaporator pipe Indoor 2
Indoor 2
compressor starts operation and the hot
temperature thermistor
1
2
3
4
5
6
1
2
3
4
5
6
adjustment mode has finished, the unit is
5 Stop valve is not opened comON
ON
detected as abnormal when condenser/
pletely.
OFF
OFF
evaporator pipe temperature is not in heatA-Control Service Tool SW2 setting
ing range within 20 minutes.
(
P8
23Check converse connection of extension
pipe or converse wiring of indoor/outdoor
unit connecting wire.
Note 3) It takes at least 27 minutes to
detect abnormality.
Note 4) It excludes the period of defrosting
(Detection restarts when defrosting
mode is over)
Heating range : 3 deg [5.4˚F] [ (Condenser/
Evaporator temperature (TH5) –
room temperature (TH1))
<M-NET communication error>
Error Code
A0
(6600)
A2
(6602)
A3
(6603)
)
(Note) “Indoor unit” in the text indicates M-NET board in outdoor unit.
Abnormal point and detection method
Case
Address duplicate definition
1 There are 2 or more same
This error is displayed when transmission
address of controller of outfrom the units of same address is detected.
door unit, indoor unit, FRESH
Note) The address and attribute displayed
MASTER, or LOSSNAY.
at remote controller indicate the con- 2 Noise has entered into transtroller that detected abnormality.
mission signal and signal was
transformed.
Judgment and action
Search the unit with same address as abnormality occurred. If the same address is found, turn off
the power supply of outdoor unit and indoor unit
and FRESH MASTER or LOSSNAY at the same
time for 2 minutes or more after the address is
corrected, and turn the power on again.
Check transmission waveform or noise on transmission wire.
1 Error is detected if waveform is
transformed when wiring works
of transmission wire of outdoor unit, indoor unit, FRESH
MASTER or LOSSNAY are
done, or polarity is changed
with the power on and transmission data collide each other.
2 Defective transmitting receiving
circuit of transmission processor
3 Transmission data is changed
by the noise on transmission.
BUS BUSY
1 Transmission processor could
1. Overtime error by collision damage
not transmit signal because
short cycle voltage of noise
Abnormal if transmitting signal is not
and the like have entered into
possible for 8-10 minutes continuously
transmission wire continuously.
because of collision of transmission.
2. Data could not reach transmission wire 2 Transmission quantity has
increased and transmission is
for 8-10 minutes continuously because
not possible because there was
of noise or etc.
wiring mistake of terminal block
Note) The address and attribute displayed
for transmission wire (TB3) and
at remote controller indicate the conterminal block for central controller that detected abnormality.
trol (TB7) in outdoor unit.
3 Transmission are mixed with
others and occupation rate on
transmission wire rose because
of defective repeater (a function to connector or disconnect
transmission of control and
central control system) of outdoor unit, then abnormality is
detected.
1 If the works of transmission wire is done
with the power on, turn off the power supply
of outdoor unit and indoor unit and FRESH
MASTER or LOSSNAY at the same time for
2 minutes or more, and turn the power on
again.
Hardware error of transmission
processor
Transmission processor intended to transmit “0”, but “1” appeared on transmission
wire.
Note) The address and attribute display at
remote controller indicate the controller that detected abnormality.
32
2 Check transmission waveform or noise on
transmission wire.
1 Check if transmission wire of indoor unit,
FRESH MASTER, LOSSNAY, or remote
controller is not connected to terminal block
for central control (TB7) of outdoor unit.
2 Check if transmission wire of indoor unit,
FRESH MASTER or LOSSNAY is not connected to terminal block for transmission
wire of outdoor unit.
3 Check if terminal block for transmission wire
(TB3) and terminal block for central control
(TB7) is not connected.
4 Check transmission waveform or noise on
transmission wire.
Error Code
A6
(6606)
A7
(6607)
Abnormal point and detection method
Case
Judgment and action
Communication error with communication processor
Defective communication between unit
processor and transmission processor
Note) The address and attribute display at
remote controller indicate the controller that detected abnormality.
1 Data of transmission processor or unit processor is not
transmitted normally because
of accidental trouble such as
noise or thunder surge.
2 Address forwarding from unit
processor is not transmitted
normally because of defective
transmission processor hardware.
Turn off the power supply of outdoor unit and
indoor unit and FRESH MASTER or LOSSNAY
at the same time for 2 minutes or more, and
turn the power on again. System returns to
normal if abnormality was accidental malfunction. If the same abnormality generates again,
abnormality-generated controller may be defective.
NO ACK signal
1. Transmitting side controller detects
abnormal if a message was transmitted
but there is no reply (ACK) that a message was received. Transmitting side
detects abnormality every 30 seconds, 6
times continuously.
Note) The address and attribute displayed
at remote controller indicates the
controller that did not reply (ACK).
Common factor that has no relation with abnormality source.
1 The unit of former address
does not exist as address
switch has changed while the
unit was energized.
2 Extinction of transmission wire
voltage and signal is caused
by over-range transmission
wire.
• Maximum distance:
200m [656ft]
• Remote controller line: (12m
[39ft])
3 Extinction of transmission wire
voltage and signal is caused
by type-unmatched transmission wire.
Type:
With shield wireCVVS, CPEVS
With normal wire (no shield)VCTF, VCTFK, CVV
CVS, VVR, VVF, VCT
Diameter: 1.25mm2 [AWG16]
or more
4 Extinction of transmission wire
voltage and signal is caused
by over-numbered units.
5 Accidental malfunction of
abnormality-detected controller
(noise, thunder surge)
6 Defective of abnormality generated controller
Always try the followings when the error
“A7” occurs.
2. If displayed address or attribute is out1 Contact failure of transmission
door unit, indoor unit detects abnormality
wire of outdoor unit or indoor unit
when indoor unit transmitted to outdoor 2 Disconnection of transmission
unit and there was no reply (ACK).
connector (CN2M) of outdoor
unit
3 Defective transmitting receiving
circuit of outdoor unit or indoor
unit
1 Turn off the power supply of outdoor unit
and indoor unit and FRESH MASTER or
LOSSNAY at the same time for 2 minutes or
more, and turn the power on again. If malfunction was accidental, the unit returns to
normal.
2 Check address switch of abnormality generated address.
3 Check disconnection or looseness of abnormality generated or abnormality detected
transmission wire (terminal block and connector)
4 Check if tolerance range of transmission wire
is not exceeded.
5 Check if type of transmission wire is correct
or not.
If there were some troubles of 1-5 above,
repair the defective, then turn off the power
supply of outdoor unit and indoor unit and
FRESH MASTER or LOSSNAY at the same
time for 2 minutes or more, and turn the power
on again.
• If there was no trouble with 1-5 above in
single refrigerant system (one outdoor unit),
controller of displayed address or attribute is
defective.
• If there was no trouble with 1-5 above in different refrigerant system (2 or more outdoor
units), judge with 6.
6 If address of abnormality source is the
address that should not exist, there is the
unit that memorizes non-existent address
information. Delete useless address information with manual setting function of remote
controller.
Only the system FRESH MASTER or
LOSSNAY are connected to, or the system
that is equipped with group setting of different refrigerant system.
3. If displayed address or attribute is indoor 1 During group operation with
unit, remote controller detects abnormalindoor unit of multi- refrigerant
ity when remote controller transmitted to
system, if remote controller
indoor unit and there was no reply (ACK).
transmit to indoor unit while
outdoor unit power supply
of one refrigerant system is
turned off or within 2 minutes of restart, abnormality is
detected.
2 Contact failure of transmission
wire of remote controller or
indoor unit
3 Disconnection of transmission
connector (CN2M) of indoor unit
4 Defective transmitting receiving
circuit of indoor unit or remote
controller
Continued to the next page.
33
From the previous page.
Error Code
Abnormal point and detection method
Case
Judgment and action
4. If displayed address or attribute is
Refer to “A7” of the previous page.
1 During group operation with
indoor unit of multi- refrigerant
remote controller, indoor unit detects
system, if indoor unit transmit
abnormality when indoor unit transmitted
to remote controller while outto remote controller and there was no
door unit power supply of one
reply (ACK).
refrigerant system is turned off
or within 2 minutes of restart,
abnormality is detected.
2 Contact failure of transmission
wire of remote controller or
indoor unit
3 Disconnection of transmission
connector (CN2M) of indoor
unit
4 Defective transmitting receiving
circuit of indoor unit or remote
controller
A7
(6607)
5. If displayed address or attribute is
1 During sequential operation
of indoor unit and FRESH
FRESH MASTER, indoor unit detects
MASTER of other refrigerant
abnormality when indoor unit transmitted
system, if indoor unit transmits
to FRESH MASTER and there was no
to FRESH MASTER while
reply (ACK).
outdoor unit power supply of
same refrigerant system with
FRESH MASTER is turned off
or within 2 minutes of restart,
abnormality is detected.
2 Contact failure of transmission
wire of indoor unit or FRESH
MASTER
3 Disconnection of transmission
connector (CN2M) of indoor
unit or FRESH MASTER
4 Defective transmitting receiving
circuit of indoor unit or FRESH
MASTER
6. If displayed address or attribute is
1 If the power supply of
LOSSNAY is off, indoor unit
LOSSNAY, indoor unit detects abnordetects abnormality when it
mality when indoor unit transmitted to
transmits to LOSSNAY.
LOSSNAY and there was no reply (ACK).
2 During sequential operation
of indoor unit and LOSSNAY
of other refrigerant system,
if indoor unit transmits to
LOSSNAY while outdoor unit
power supply of same refrigerant system with LOSSNAY is
turn off or within 2 minutes of
restart, abnormality is detected.
3 Contact failure of transmission wire of indoor unit of
LOSSNAY
4 Disconnection of transmission
connector (CN2M) of indoor
unit
5 Defective transmitting receiving circuit of indoor unit or
LOSSNAY
7. If displayed address or attribute is nonexistent.
1 The unit of former address
does not exist as address
switch has changed while the
unit was energized.
2 Abnormality is detected
when indoor unit transmitted because the address
of FRESH MASTER and
LOSSNAY are changed after
sequential operation of FRESH
MASTER and LOSSNAY by
remote controller.
34
Error Code
A8
(6608)
Abnormal point and detection method
Case
M-NET NO RESPONSE
1 Transmitting condition is
repeated fault because of
Abnormal if a message was transmitted
noise and the like.
and there were reply (ACK) that message
2 Extension of transmission wire
was received, but response command
voltage and signal is caused
does not return. Transmitting side detects
by over-range transmission
abnormality every 30 seconds, 6 times
wire.
continuously.
• Maximum distance: 200m
Note) The address and attribute displayed
[656ft]
at remote controller indicate the con• Remote controller line: (12m
troller that did not reply (ACK).
[39ft])
3 Extension of transmission wire
voltage and signal is caused
by type-unmatched transmission wire.
Type:
With shield wireCVVS, CPEVS
With normal wire (no shield)VCTF, VCTFK, CVV
CVS, VVR, VVF, VCT
Diameter: 1.25mm2 [AWG16]
or more
4 Accidental malfunction of
abnormality-generated
controller
Judgment and action
1 Check transmission waveform or noise on
transmission wire.
2 Turn off the power supply of outdoor unit
and indoor unit and FRESH MASTER or
LOSSNAY at the same time for 2 minutes or
more, and turn the power on again. If malfunction was accidental, the unit returns to
normal. If the same abnormality generates
again, controller of displayed address and
attribute may be defective.
10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA
Phenomena
1. Remote controller display does not
work.
Factor
1DC12V is not supplied to remote controller.
(Power supply display
is not indicated on LCD.)
2DC12~15V is supplied to remote controller, however,
no display is indicated.
• “PLEASE WAIT” is not displayed.
• “PLEASE WAIT” is displayed.
Countermeasure
1Check LED2 on indoor controller board.
(1) When LED2 is lit.
Check the remote controller wiring for
breaking or contact failure.
(2) When LED2 is blinking.
Check short circuit of remote controller
wiring.
(3) When LED2 is not lit.
Refer to No.3 below.
2Check the following.
• Failure of remote controller if “PLEASE
WAIT” is not displayed
• Refer to No.2 below if “PLEASE WAIT” is
displayed.
2. “PLEASE WAIT” display remains on 1After the power is supplied, “PLEASE WAIT” is dis1Normal operation
the remote controller.
played for about 2 minutes to start up.
2Self-diagnosis of remote controller
2Communication error between the remote controller
3”PLEASE WAIT” is displayed for 6 minand indoor unit
utes at most in case of indoor/outdoor unit
communication error. Check LED3 on
3Communication error between the indoor and outdoor
unit
indoor controller board.
(1)When LED3 is not blinking.
4Outdoor unit protection device connector is open.
Check indoor/outdoor connecting wire
for miswiring.
(Converse wiring of S1 and S2, or
break of S3 wiring.)
(2)When LED3 is blinking.
Indoor/outdoor connecting wire is normal.
4Check LED display on outdoor controller
circuit board. Refer to 10-10.
Check protection device connector (63L
and 63H) for contact failure.
Refer to 10-9.
3. When pressing the remote controller 1After canceling to select function from the remote
operation switch the OPERATION
controller, the remote controller operation switch will
display is appeared but it will be
not be accepted for approx. 30 seconds.
turned off soon.
35
1Normal operation
Phenomena
4. Even controlling by the wireless
remote controller no beep is heard
and the unit does not start operating. Operation display is indicated
on wireless remote controller.
Factor
Countermeasure
1The pair number settings of the wireless remote
1Check the pair number settings.
controller and indoor controller board are mismatched.
5. When operating by the wireless
remote controller, beep sound is
heard, however, unit does not start
operating.
1No operation for 2 minutes at most after the power
1Normal operation
supply ON.
2Normal operation
2Hand-held remote controller operation is prohibited.
• Remote controlling adaptor is connected to CN32
on the indoor controller board.
• Hand-held remote controller operation is prohibited
by centralised controller etc. since it is connected to
MELANS.
3Refer to factor of No.2 on previous page.
3Check phenomena of No.2.
6. Remote controller display works
1Refrigerant shortage
normally and the unit performs cooling operation, however, the capacity
cannot be fully obtained. (The air
does not cool well.)
2Filter clogging
1If refrigerant leaks, discharging temperature rises and LEV opening increases.
Inspect leakage by checking the temperature and opening.
Check pipe connections for gas leakage.
2Open intake grille and check the filter.
Clean the filter by removing dirt or dust on
it.
3If the filter is clogged, indoor pipe temperature rises and discharging pressure
increases. Check if heat exchanger is
clogged by inspecting discharging pressure.
Clean the heat exchanger.
4Remove the shield.
3Heat exchanger clogging
4Air duct short cycle
7. Remote controller display works nor- 1Linear expansion valve fault
1Discharging temperature and indoor heat
mally and the unit performs heating
exchanger temperature does not rise.
Opening cannot be adjusted well due to linear expanoperation, however, the capacity
Inspect the failure by checking dischargsion valve fault.
cannot be fully obtained.
ing pressure.
Replace linear expansion valve.
2If refrigerant leaks, discharging temperature rises and LEV opening increases.
2Refrigerant shortage
Inspect leakage by checking the temperature and opening.
Check pipe connections for gas leakage.
3Check the insulation.
4Open intake grill and check the filter.
3Lack of insulation for refrigerant piping
Clean the filter by removing dirt or dust on
4Filter clogging
it.
5If the filter is clogged, indoor pipe temperature rises and discharging pressure
5Heat exchanger clogging
increases. Check if heat exchanger is
clogged by inspecting discharging pressure.
Clean the heat exchanger.
6Remove the shield.
7Check refrigerant system during operation.
6Air duct short cycle
7By-pass circuit of outdoor unit fault
8. 1For 3 minutes after temperature
12Normal operation
adjuster turns off, the compressor
(For protection of compressor)
will not start operating even if
temperature adjuster is turned on.
2For 3 minutes after temperature
adjuster turns on, the compressor
will not stop operating even if
temperature adjuster is turned off.
(Compressor stops operating
immediately when turning off by
the remote controller.)
36
12Normal operation
Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller.
Diagnosis flow
Cause
Inspection method and
troubleshooting
Check the display time of “PLEASE WAIT”
after turning on the main power.
6 minutes
or more
How long is “PLEASE WAIT”
kept being displayed on the
remote controller?
2 minutes
or less
2 to 6
minutes
Are any error codes
displayed on the
remote controller?
Check the LED display of the
outdoor controller circuit board.
Are any error codes
displayed on the LED?
• Normal
• “PLEASE WAIT”
The start-up diagnosis will
will be displayed
during the start-up
be over in around 2 minutes.
diagnosis after turning
on the main power.
NO
YES
YES
• Miswiring of indoor/
outdoor connecting
wire
• Breaking of indoor/
outdoor connecting
wire (S3)
• Defective indoor
controller board
• Defective outdoor
controller circuit
board
NO
• Defective indoor
controller board
• Defective remote
controller
37
• Refer to “Self-diagnosis
action table” in order to
solve the trouble.
• In case of communication
errors, the display of
remote controller may not
match the LED display of
the outdoor unit.
Symptoms: Nothing is displayed on the remote controller Diagnosis flow
Cause
LED display of the indoor
controller board
LED1 :
LED2 :
LED3 :
Inspection method and
troubleshooting
Check the voltage between S1
and S2 on the terminal block
(TB4) of the indoor unit.
AC 187V to AC 253V?
YES
NO
Check the voltage among L and N
on the terminal block (TB1) of the
outdoor power circuit board.
AC 187V to AC 253V?
NO
• Troubles concerning
power supply
• Check the power wiring
to the outdoor unit.
• Check the breaker.
• Bad wiring of the
outdoor controller
board
• The fuses on the
outdoor
controller circuit
board are blown.
• Check the wiring of the
outdoor unit.
• Check if the wiring is bad.
Check if the fuses are blown.
The fuses on the outdoor
controller circuit board will
be blown when the indoor
/outdoor connecting wire
short-circuits.
• Bad wiring of the
outdoor controller
board
• The fuses on the
outdoor
controller circuit
board are blown.
• Check if miswiring, breaking
or poor contact is causing this
problem. Indoor/outdoor
connecting wire is polarized
3-core type. Connect the
indoor unit and the outdoor
unit by wiring each pair of
S1, S2 and S3 on the both
side of indoor/outdoor
terminal blocks.
• Defective indoor
controller board
• Replace the indoor
controller board.
YES
Check the voltage between S1
and S2 on the terminal block
(TB1) of the outdoor unit which
is used to connect the indoor
unit and the outdoor unit.
AC 187V to AC 253V?
NO
YES
Check the voltage of indoor
controller board (CN2D).
DC 12V to DC 16V?
YES
NO
Check the voltage of the unit after
removing the indoor power board
(CN2S).
DC 12V to DC 16V?
YES
• Miswiring, breaking
• Check if there is miswiring
or poor connection of or breaking of wire.
indoor/outdoor
connecting wire
NO
• Defective indoor
power board
38
• Replace the indoor
power board.
Symptoms: Nothing is displayed on the remote controller Diagnosis flow
Cause
LED display of the indoor
controller board
LED1 :
LED2 :
LED3 :
or
Inspection method and
troubleshooting
Check the voltage between S1 and S2 on the terminal block (TB4)
of the indoor unit.
NO
AC 187V to AC 253V?
YES
Not lighting.
Check the status
of the indoor controller
board LED3 display.
Check the looseness or disconnection
of the indoor/outdoor connecting wire.
Blinking
Are there looseness or
disconnection of the indoor/
outdoor connecting wire?
YES
NO
• Fix the breaking or poor
• Breaking or poor
contact of the indoor/ contact of the indoor/outdoor
outdoor connecting
connecting wire.
wire
Check the refrigerant address of
the outdoor unit. (SW1-3 to 1-6)
NO
Is the refrigerant
address “0”?
YES
Check the LED display of the
outdoor unit after turning on the
main power again.
Not displayed.
Is anything displayed?
Displayed.
Is “EA” or “Eb”
displayed?
• Normal
Only the unit which
has the refrigerant
address “0” supplies
power to the remote
controller.
• Set the refrigerant
address to “0”. In case of
the multiple grouping
system, recheck the
refrigerant address again.
• Defective outdoor
controller circuit
board
• Replace the outdoor
controller circuit board.
• Defective outdoor
controller circuit
board
• Replace the outdoor
controller circuit board.
• Defective indoor
controller board
• Replace the indoor controller
board of the indoor unit which
doesn’t operate.
NO
YES
Is “E8” displayed?
YES
NO
Can the unit be restarted?
Can all the indoor
unit be operated?
Check the voltage between S2
and S3 on the terminal block of
the outdoor unit.
DC 17V to DC 28V?
NO
YES
• Influence of
• Normal
electromagnetic noise There may be the influence
of electromagnetic noise.
Check the transmission wire
and get rid of the causes.
NO
YES
39
• Defective outdoor
power circuit board
• Replace the outdoor
power circuit board.
• Defective indoor
power board
• Replace the indoor
power board.
Symptoms: Nothing is displayed on the remote controller Diagnosis flow
Cause
LED display of the indoor
controller board
LED1 :
LED2 :
or
LED3 : —
Inspection method and
troubleshooting
Check the voltage of the
terminal block (TB6) of
the remote controller.
DC 10V to DC 16V?
YES
• Defective
remote controller
• Replace the
remote controller.
NO
Check the status
of the LED2.
Lighting
• Breaking or poor
• Check if there is breaking
contact of the remote or poor contact of the
controller wire
remote controller wire.
Check the voltage of the
terminal block (TB5)
connecting the remote
controller wire.
If it is not between DC 10V
and DC16V, the indoor
controller board must be
defective.
Blinking
Check the status of the LED2
after disconnecting the remote
controller wire from the terminal
block (TB5) of the indoor unit.
Check the status
of the LED2.
Lighting
• The remote controller • Check if the remote
wire short-circuits
controller wire is
short-circuited.
Blinking
• Defective indoor
controller board
40
• Replace the indoor
controller board.
• Before repair
Frequent calling from customers
Phone Calls From Customers
How to Respond
Note
Unit does The operating display of remote Check if power is supplied to air conditioner.
not operate
controller does not come on.
Nothing appears on the display unless power is
at all.
supplied.
Unit cannot be restarted for a
while after it’s stopped.
Wait around 3 minutes to restart unit.
The air conditioner is in a state of being protected
by the microcomputer’s directive. Once the
compressor is stopped, the unit cannot be
restarted for 3 minutes. This control is also applied
when the unit is turned on and off by remote
controller or thermostat.
Error code appears and blinks Error code will be displayed if any protection
on the display of remote
devices of the air conditioner are actuated.
controller.
What is error code?
Remote
controller
“PLEASE WAIT” is displayed
on the screen.
Wait around 2 minutes.
An automatic startup test will be conducted for
2 minutes when power is supplied to the air
conditioner. “PLEASE WAIT” will be displayed
during that time.
“FILTER” is displayed on the
screen.
This indicates that it is time to clean the air filters.
Clean the air filters. Press the FILTER button on
the remote controller twice to clear “FILTER” from
the display.
See the operation manual that came with the
product for how to clean the filters.
“STANDBY” is displayed on the This is displayed when the unit starts HEAT
screen.
operation, when the thermostat puts the
compressor in operation mode, or when the
outdoor unit ends DEFROST operation and
returns to HEAT operation.
The display will automatically disappear around
10 minutes later.
While “STANDBY” is displayed on the remote
controller, the airflow amount will be restricted
because the indoor unit’s heat exchanger is not
fully heated up. In addition to that, the up/down
vane will be automatically set to horizontal blow
in order to prevent cold air from directly blowing
out to human body. The up/down vane will return
to the setting specified by the remote controller
when “STANDBY” is released.
“DEFROST” is displayed on the The outdoor unit gets frosted when the outside
screen. (No air comes out of
temperature is low and the humidity is high.
the unit.)
“DEFROST” indicates the DEFROST operation
is being performed to melt this frost. The
DEFROST operation ends in around 10 minutes
(at most 15 minutes).
During the DEFROST operation, the indoor unit’s
heat exchanger becomes cold, so the blower is
stopped. The up/down vane will be automatically
set to horizontal blow in order to prevent cold air
from directly blowing out to human body. The
display will turn into “STANDBY” when DEFROST
operation ends.
41
Refer to “SELF-DIAGNOSIS
ACTION TABLE”.
Check if servicing is
required for the error.
Display time of “FILTER”
depends on the model.
Long life filter: 2500 hrs.
Regular filter: 100 hrs.
Phone Calls From Customers
How to Respond
Note
The room cannot be cooled or heated sufficiently. Check the set temperature of remote controller.
The outdoor unit cannot be operated if the set
temperature is not appropriate.
The outdoor unit operates in the following modes.
COOL: When the set temperature is lower
than the room temperature.
HEAT: When the set temperature is higher
than the room temperature.
Check if filters are not dirty and clogged. If filters
are clogged, the airflow amount will be reduced
and the unit capacity will be lowered. See the
instruction manual that came with the product for
how to clean the filters.
Check there is enough space around the air
conditioner.
If there are any obstacles in the air intake or air outlet
of indoor/outdoor units, they block the airflow
direction so that the unit capacity will be lowered.
Sound
An gas escaping sound is heard This is not a malfunction.
comes out
sometimes.
This is the sound which is heard when the flow of
from the air
refrigerant in the air conditioner is switched.
conditioner.
A cracking sound is heard
This is not a malfunction.
sometimes.
This is the sound which is heard when internal
parts of units expand or contract when the
temperature changes.
A buzzing sound is heard
sometimes.
This is not a malfunction.
This is the sound which is heard when the outdoor
unit starts operating.
A ticking sound is heard from
the outdoor unit sometimes.
This is not a malfunction.
This is the sound which is heard when the blower
of the outdoor unit is controlling the airflow amount
in order to keep the optimum operating condition.
A sound, similar to water
flowing, is heard from the unit.
This is not a malfunction.
This is the sound which is heard when the
refrigerant is flowing inside the indoor unit.
Something The fan speed doesn’t match
is wrong
the setting of the remote
with the
controller during DRY
blower…..
operation.(No air comes out
sometimes during DRY
operation.)
This is not a malfunction. During the DRY
operation, the blower’s ON/OFF is controlled by
the microcomputer to prevent overcooling and to
ensure efficient dehumidification. The fan speed
cannot be set by the remote controller during DRY
operation.
The fan speed doesn’t match
the setting of the remote
controller in HEAT operation.
This is not a malfunction.
1) When the HEAT operation starts, to prevent the
unit from blowing cold air, the fan speed is
gradually increased from zero to the set speed,
in proportion to the temperature rise of the
discharged air.
2) When the room temperature reaches the set
temperature and the outdoor unit stops,
the unit starts the LOW AIR operation.
3) During the HEAT operation, the DEFROST
operation is performed to defrost the outdoor
unit. During the DEFROST operation, the
blower is stopped to prevent cold air coming
out of the indoor unit.
42
The up/down vane will be
automatically set to
horizontal blow in these
cases listed up on the left
(
~). After a while, the
up/down vane will be
automatically moved
according to the setting of
the remote controller.
Phone Calls From Customers
Something Air blows out for a while after
is wrong
HEAT operation is stopped.
with the
blower…..
How to Respond
Note
This is not a malfunction.
The blower is operating just for cooling down the
heated-up air conditioner. This will be done within
1 minute.
This control is conducted only when the HEAT
operation is stopped with the electric heater ON.
However, this control is also
applied to the models which
has no electric heater.
Something The airflow direction is changed If the up/down vane is set to downward in COOL
during COOL operation.
is wrong
operation, it will be automatically set to horizontal
with the
blow by the microcomputer in order to prevent
airflow
water from dropping down.
direction….
“1 Hr.” will be displayed on the remote controller if
the up/down vane is set to downward with the fan
speed set to be less than “LOW”.
The airflow direction is changed In HEAT operation, the up/down vane is
during HEAT operation.
automatically controlled according to the
(The airflow direction cannot be
temperature of the indoor unit’s heat exchanger.
set by remote controller.)
In the following cases written below, the up/down
vane will be set to horizontal blow, and the setting
cannot be changed by remote controller.
1) At the beginning of the HEAT operation
2) While the outdoor unit is being stopped by
thermostat or when the outdoor unit gets started
to operate.
3) During DEFROST operation
The airflow direction will be back to the setting
of remote controller when the above situations
are released.
“STANDBY” will be displayed
on the remote controller in
case of 1) and 2).
“DEFROST” will be displayed
on the screen in case of 3).
The airflow direction doesn’t
1) Check if the vane is set to a fixed position.
change.
(Check if the vane motor connector is
(Up/down vane, left/right louver)
removed.)
2) Check if the air conditioner has a function for
switching the air direction.
3) If the air conditioner doesn’t have that
function, “NOT AVAILABLE” will be displayed
on the remote controller when “AIR
DIRECTION” or “LOUVER” button is pressed.
The air conditioner starts operating even though
any buttons on the remote controller are not
pressed.
Check if you set ON/OFF timer.
The air conditioner starts operating at the time
designated if ON timer has been set before.
Check if any operations are ordered by distant
control system or the central remote controller.
While “CENTRALLY CONTROLLED INDICATOR”
is displayed on the remote controller, the air
conditioner is under the control of external directive.
There might be a case that
“CENTRALLY CONTROLLED
INDICATOR” will not be
displayed.
Check if power is recovered from power failure
(black out).
The units will automatically start operating when
power is recovered after power failure (black out)
occurs. This function is called “auto recovery
feature from power ”.
Check if you set ON/OFF timer.
The air conditioner stops even though any
The air conditioner stops operating at the time
buttons on the remote controller are not pressed.
designated if OFF timer has been set before.
Check if any operations are ordered by distant
control system or the central remote controller.
While “CENTRALLY CONTROLLED INDICATOR” is
displayed on the remote controller, the air conditioner is
under the control of external directive.
43
There might be a case that
“CENTRALLY
CONTROLLED INDICATOR”
will not be displayed.
Phone Calls From Customers
How to Respond
A white mist is expelled from the indoor unit. This is not a malfunction.
This may occur when the operation gets started in
the room of high humidity.
Water or moisture is expelled from the
outdoor unit.
Cooling; when pipes or piping joints are cooled, they
get sweated and water drips down.
Heating; water drips down from the heat exchanger.
* Use optional parts “Drain Socket” and “Drain pan” if
these water needs to be collected and drained out for
once.
The display of wireless remote controller gets Batteries are being exhausted. Replace them and
dim or doesn’t come on.
press the reset button of remote controller.
The indoor unit doesn’t receive a signal from
remote controller at a long distance.
44
Note
10-6. HOW TO CHECK THE PARTS
PUZ-HA30NHA PUZ-HA36NHA
Check points
Parts name
Thermistor (TH3)
Disconnect the connector then measure the resistance with a tester.
<Outdoor pipe>
(Ambient temperature 10~30, 50°F~86°F)
Thermistor (TH4)
<Discharge>
Normal
Abnormal
Thermistor (TH6)
TH4
160k~410k
<Outdoor 2-phase pipe>
TH3
Thermistor (TH7)
<Outdoor>
TH6
Thermistor (TH8)
<Heatsink>
Thermistor (TH32)
<Outdoor pipe>
Thermistor (TH33)
<Outdoor pipe>
TH7
4.3k~9.6k
Open or short
TH32
TH33
TH8
39k~105k
Fan motor (MF1, MF2) Refer to next page.
Solenoid valve coil
<Four-way valve>
(21S4)
Measure the resistance between the terminals with a tester.
(Ambient temperature 20, 68°F)
Normal
Abnormal
1435$150
Open or short
Motor for compressor Measure the resistance between the terminals with a tester.
(Winding temperature 20, 68°F)
U
(MC)
V
W
Normal
Abnormal
0.188
Open or short
Linear expansion valve Disconnect the connector then measure the resistance with a tester.
(LEV-A/LEV-B/LEV-C) (Winding temperature 20, 68°F)
M
Gray
Orange
Red
Yellow
Black
Normal
1
2
3
4
5
6
Solenoid valve coil
<Bypass valve>
(SV)
Gray - Black
Abnormal
Gray - Yellow
Gray - Red
Gray - Orange
46$3
Measure the resistance between the terminals with a tester.
(Ambient temperature 20, 68°F)
Normal
1197$10
Abnormal
Open or short
45
Open or short
Check method of DC fan motor (fan motor/outdoor controller circuit board)
Notes
· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay extra attention while servicing.
· Do not pull out the connector (CNF1, 2) for the motor with the power supply on.
(It causes trouble of the outdoor controller circuit board and fan motor.)
Self check
Symptom : The outdoor fan cannot turn around.
Fuse check
Check the fuse (F5) on outdoor
controller board.
Did the fuse blow?
Yes
Replace outdoor controller board (C.B)
and fan motor (MF1, 2).
No
Wiring contact check
Contact of fan motor connector (CNF1, 2)
Is there contact failure?
Yes
Wiring recovery
No
Power supply check (Remove the connector (CNF1, 2))
Measure the voltage in the outdoor controller circuit board.
TEST POINT : VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC250~330V
TEST POINT : VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V
Is the voltage normal?
Yes
Yes
No
Check the operation of fan.
Replace outdoor
controller board.
NG
Replace outdoor controller board.
OK
Check the operation.
Replace the fan motor.
END
NG
Replace the fan motor.
46
OK
END
10-7. HOW TO CHECK THE COMPONENTS
<Thermistor feature chart>
50
Low temperature thermistors
<Outdoor pipe> (TH3)
<Outdoor 2-phase pipe> (TH6)
<Outdoor> (TH7)
<Outdoor pipe> (TH32)
<Outdoor pipe> (TH33)
40
Resistance (k)
• Thermistor
• Thermistor
• Thermistor
• Thermistor
• Thermistor
Thermistor R0 = 15k' ± 3%
B constant = 3480 ± 2%
1
1
t (:): Rt =15exp{3480( 273+t – 273 )}
1
1
T (˚F): RT =15exp{3480( 273+(T– 32)/1.8 – 273 )}
0:[32˚F]
10:[50˚F]
20:[68˚F]
25:[77˚F]
15k'
9.6k'
6.3k'
5.2k'
30:[86˚F]
40:[104˚F]
30
20
10
4.3k'
3.0k'
0
-20 -10 0 10 20 30 40 50 -4 -14 32 50 68 86 104122 F
Temperature
200
Medium temperature thermistor
• Thermistor <Heatsink> (TH8)
Thermistor R50 = 17k' ± 2%
B constant = 4170 ± 3%
1
1
t (:): Rt =17exp{4170( 273+t – 323)}
1
1
T (˚F): RT=17exp{4170( 273+(T– 32)/1.8 – 323 )}
0:[32˚F]
25:[77˚F]
50:[122˚F]
70:[158˚F]
90:[194˚F]
Resistance (k)
150
180k'
50k'
17k'
8k'
4k'
100
50
0
25
77
50
75 100 110 125 122 167 212 230 257 F
Temperature
500
High temperature thermistor
• Thermistor <Discharge> (TH4)
400
Resistance (k)
Thermistor R120 = 7.465k' ± 2%
B constant = 4057 ± 2%
1
1
t (:): Rt =7.465exp{4057( 273+t – 393)}
1
1
T (˚F): RT =7.465exp{4057( 273+(T– 32)/1.8 – 393 )}
20:[68˚F]
30:[86˚F]
40:[104˚F]
50:[122˚F]
60:[140˚F]
250k'
160k'
104k'
70k'
48k'
70:[158˚F]
80:[176˚F]
90:[194˚F]
100:[212˚F]
110:[230˚F]
34k'
24k'
17.5k'
13.0k'
9.8k'
300
200
100
0
47
25
77
50
75
122
167
Temperature
100
212
120 248 F
Linear expansion valve
(1) Operation summary of the linear expansion valve
• Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller
board.
• Valve position can be changed in proportion to the number of pulse signal.
<Connection between the outdoor controller board and the linear expansion valve>
Outdoor controller board
DC12V
Gray
LEV
1
Drive circuit
3
M
2
1
5
4
Orange 3
:4
4
:3
:2
Yellow 5
:2
:1
Black
6
:1
:4
:3
6
Red
Connector LEV-A
LEV-B
LEV-C
<Output pulse signal and the valve operation>
Output
(Phase)
Output
1
2
3
5
4
6
7
8
:1
ON ON OFF OFF OFF OFF OFF ON
:2
OFF ON
:3
OFF OFF OFF ON ON ON OFF OFF
:4
OFF OFF OFF OFF OFF ON ON ON
ON ON OFF OFF OFF OFF
Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8
Closing a valve : 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 1
The output pulse shifts in above order.
• When linear expansion valve operation stops, all output phase
become OFF.
• When the switch is turned on, 700 pulse closing valve signal will
be sent till it goes to A point in order to define the valve position.
(The pulse signal is being sent for about 20 seconds.)
(2) Linear expansion valve operation
When the valve moves smoothly, there is no sound or vibration
occurring from the linear expansion valve ; however, when the
pulse number moves from B to A or when the valve is locked,
sound can be heard.
No sound is heard when the pulse number moves from B to A in
case coil is burn out or motor is locked by open-phase.
Valve position (capacity)
• Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion
valve.
Close
Open
500 pulse
Opening a valve
all the way
Pulse number
Extra tightning (about 32 pulse)
48
(3) How to attach and detach the coil of linear expansion valve
<Composition>
Linear expansion valve is separable into the main body and the coil as shown in the diagram below.
Stopper
Main body
Coil
Lead wire
<How to detach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and detach the coil by pulling it
upward.
Be sure to detach the coil holding main body firmly. Otherwise
pipes can bend due to pressure.
A
<How to attach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and attach the coil by inserting it
downward into the main body. Then securely attach the coil stopper to main body. (At this time, be careful that stress is not added
to lead wire and main body is not wounded by lead wire.) If the
stopper is not firmly attached to main body, coil may be detached
from the main body and that can cause defective operation of linear expansion valve.
To prevent piping stress, be sure to attach the coil holding the
main body of linear expansion valve firmly. Otherwise pipe may
break.
Be sure to attach
the stopper.
A
49
10-8. EMERGENCY OPERATION
(1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor
unit has a failure, and no other problems are found, emergency operation will be available by setting the emergency operation switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller board.
●When following abnormalities occur, emergency operation will be available.
Error code Inspected content
U4
Open/short of thermistor (TH3/TH6/TH7/TH32/TH33/TH8)
E8
Indoor/outdoor unit communication error •Signal receiving error (Outdoor unit)
E9
Indoor/outdoor unit communication error •Transmitting error (Indoor unit)
E0 ~ E7
Ed
Communication error other than outdoor unit
Communicaiton error between outdoor controller board and M-NET board (Serial communication error)
(2) Check the following items and cautions for emergency operation
1Make sure that there is no abnormality in outdoor unit other than the above abnormalities. (Emergency operation will
not be available when error codes other than the above are indicated.)
2For emergency operation, it is necessary to set the emergency operation switch (SWE) on indoor controller board. Refer
to the electrical wiring diagram of indoor unit for how to set the indoor unit.
3During emergency operation, the air-conditioner will continuously be operated by supplying power and stopping it. It can
not be turned on or off by remote control, and temperature control is not possible.
4Do not perform emergency heating operation for an extended period of time. If the outdoor unit starts defrosting during
this period, cold air will blow out from the indoor unit.
5Do not perform emergency cooling operation for more than 10 hours. Neglecting this could result in freezing the heat
exchanger in indoor unit.
(3) Emergency operation procedure
1Turn the main power supply off.
2Turn on the emergency operation switch (SWE) on indoor controller board.
3Set the shorting pins of emergency operation connector (CN31) on outdoor controller board to ON.
4Use SW4-2 on outdoor controller board to set the operation mode (cooling or heating). (SW4-1 is not used.)
CN31
SW4
ON
1
2
Heating
ON
Cooling
OFF
Shorting pins
5Turning the main power supply on will start the emergency operation.
(4) Releasing emergency operation
1Turn the main power supply off.
2Set the emergency operation switch (SWE) on indoor controller board to OFF.
3Set the shorting pins of emergency operation connector (CN31) on outdoor controller
board to OFF.
4Set SW4-2 on outdoor controller board as shown in the right.
wIf shorting pins are not set on emergency operation connector (CN31), the setting remains OFF.
50
SW4
Heating
ON
1
2
Cooling
(5) Operation data during emergency operation
During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation
are set to the following values:
Operation mode
Remarks
Operation data
COOL
HEAT
Intake temperature (TH1)
27, 81°F
20.5, 69°F
Indoor fluid pipe temperature (TH2)
5, 41°F
45, 113°F
Indoor 2-phase pipe temperature (TH5)
5, 41°F
50, 122°F
Set temperature
25, 77°F
22, 72°F
Outdoor pipe temperature (TH3)
45, 113°F
5, 41°F
(+1)
Outdoor 2-phase pipe temperature (TH6)
50, 122°F
5, 41°F
(+1)
Outdoor air temperature (TH7)
35, 95°F
7, 45°F
(+1)
5
5
(+1)
Temperature difference code
(intake temperature - set temperature) (Tj)
Discharge superheat (SHd)
30 degC, 54 degF 30 degC, 54 degF
Sub-cool (SC)
5 degC, 9 degF
5 degC, 9 degF
(+2)
+1: If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data.
When the unit enters emergency operation and TH values are mismatched, set the thermistors to open/short.
And the unit runs emergency operation with the values listed above.
+2: If one thermistor is set to open/short, the values for SHd/SC will be different from the list above.
[Example] When pipe temperature thermistor (TH3) has an open or short circuit.
Thermistor
COOL
HEAT
TH3
45, 113°F
5, 41°F
TH6
Ta
Tb
Regard normal figure as effective data.
TH4
Td
Tc
Regard normal figure as effective data.
TH5
5, 41°F
50, 122°F
TH2
5, 41°F
45, 113°F
Discharge superheat (SHd)
Cooling = TH4 - TH6 = Tc - Ta
Heating = TH4 - TH5 = Td - (50 or 122°F)
Degree of subcooling (SC)
Cooling = TH6 - TH3 = Ta - (45 or 113°F)
Heating = TH5 - TH2 = 50 - 45 = 5 degC.
or
= 122°F - 113°F = 9degF
51
10-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUZ-HA30NHA
PUZ-HA36NHA
<CAUTION> TEST POINT1 is high voltage.
SW1
SW7
Demand control setting
Forced defrost, detect history record reset,
refrigerant address
SW6
Model select
CN51
External signal output
• Compressor operating signal
• Abnormal signal
CNDM
SW4
SW5
1 to 2:
Input of low-level
sound priority mode
1 to 3:
Input of external contact point
SW8
CN52C
Test operation
SWP
Pump down
Function switch
Pipe replace
Wiring replace
(Connect to the noise
filter circuit board
(CN52C))
CNM
Connect to A control
service tool
CN4
CNMNT
Connect to
M-NET adapter (CN5)
Transmission to outdoor power circuit
board (CN4)
CNVMNT
Connect to
M-NET adapter (CND)
SV2
Bypass valve
LEV-A,B,C
Linear expansion
valve
63L
Low pressure
switch
TH4
21S4
Four-way valve
Thermistor
<Discharge>
CN2
63H
Connect to the outdoor
power circuit board (CN2)
1-5: Reception from
power circuit board
2-5: Zero cross signal
(0-5V DC)
3,4: 18V DC
6-5: 16V DC
7-5: 16V DC
TH32, TH33
CNAC
TH3
Thermistor
<Outdoor pipe>
TH7/6
Thermistor
<Outdoor/
2-phase pipe>
High pressure
switch
Thermistor
(Outdoor pipe>
2 to 4:
Power supply for outdoor controller circuit
board (208/230V AC)
1 to 3:
Power supply for indoor
and outdoor unit connection wire
(208/230V AC)
VFG
(TEST POINT 4)
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF17(+)-4(-))
VSP
(TEST POINT 3)
(Voltage between pins
of C5A, C5B):
DC 0V(when stopped),
CNF1, CNF2
DC 1– 6.5V
Connect to the fan motor
(when operated)
1-4: 280V DC
5-4: 15V DC
6-4: 0-6.5V DC
7-4: 15V DC(When stopped)
7.5V DC(When operated)
(0V-15V pulse)
CNS
S1-S2: 208/230V AC
CNDC
280V DC (1+, 3-)
(Outdoor power circuit
board
52
+ Communication power supply
D71 Voltage
24V DC
Outdoor noise filter circuit board
PUZ-HA30NHA
PUZ-HA36NHA
CN52C
52C driving signal
(Connect to the outdoor
controller circuit board
(CN52C).)
RS1
LO, NO
Voltage of 208/230V AC
is output
(Connect to the outdoor
power circuit board
(TABS, TABT))
CNAC1, CNAC2
208/230V AC
(Connect to the
outdoor controller circuit board
(CNAC))
E2
Connect to the earth
CN5
Primary current
(Connect to the
outdoor power
circuit board
(CN5))
EI
Connect to
the earth
LI, NI
Voltage of 208/230V AC is input
(Connect to the terminal block(TB1)).
53
Outdoor power circuit board
PUZ-HA30NHA
PUZ-HA36NHA
CN2
Connect to the outdoor controller circuit board
(CN2)
1-5:Transmitting signal to the outdoor
controller circuit board (0~5V DC)
2-5:Zero cross signal (0~5V DC)
3,4:18V DC
6-5:16V DC
7-5:16V DC
Brief check of POWER MODULE
W Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of diode bridge
TABP1-TABS, TABN1-TABS, TABP1-TABT,TABN1-TABT
2. Check of DIP-IPM
P-U, P-V, P-W, N-U, N-V, N-W
CNAF
Connect to ACTM
DIP-IPM
CNDC
280-380V DC (1+, 3–)
Connect to the outdoor
controller circuit board
TABS/TABT
Connect to the
outdoor noise
filter circuit
board
Voltage among
phases:
208/230V AC
CN3
Thermistor (TH8)
<Heatsink>
CN5
Detection of primary
current
Connect to the
outdoor noise filter
circuit board (CN5)
TABP1
Connect to
52C
CN4
Connect to the
outdoor controller
circuit board (CN4)
TABN1
Connect to
ACTM
TABP2/SC-P2
Connect to the
ACTM
TABN
Connect to the
smoothing capacitor
CB –
TABP
Connect to the
smoothing capacitor CB +
TABU/V/W
Connect to the compressor (MC)
Voltage among phases:10V~180V AC
54
TABN2
Connect to ACTM
Active filter module
P
Connect to the outdoor power
circuit board (TABP2)
PUZ-HA30NHA
PUZ-HA36NHA
L1, L2
Connect to the
DCL (Reactor)
N1
Non-connect
Lower side
Upper side
+
N2
Non-connect
Connect to the
outdoor power
circuit board
(TABP1)
Connect to the outdoor power
circuit board (TABN1)
Connect to the outdoor power
circuit board (CNAF)
1
: GND
2-1 : 15V DC
3-1 : Control signal
4, 5 : Not used
6-1 : Control signal
Io
Connect to the outdoor power
circuit board (TABN2)
DCL
Connection and internal circuit diagram
L1
L2
ACTM
(+)
P
N1
N2
(- )
Io
Tester check points of Acive filter module
Error condition Normal value (reference)
(–) and Io
(–) and L2
P and L2
P and Io
L2 and Io
open
less than 1"
short
100k" ~ 1M"
open
W1
short
100k" ~ 1M"
open
W1
short
100k" ~ 1M"
open
W1
short
100k" ~ 1M"
open
W1
Load
–
Symptom when the unit is in trouble
1 The unit does not operate (can not be switched ON)
1 The breaker operates
1 The unit does not operate (can not be switched ON) 2U9 Abnormal stop (W2)
1 The breaker operates
1 The unit does not operate (can not be switched ON) 2U9 Abnormal stop (W2)
1 The breaker operates
1 The unit does not operate (can not be switched ON) 2U9 Abnormal stop (W2)
1 The breaker operates
1 The unit does not operate (can not be switched ON) 2U9 Abnormal stop (W2)
W1.Because it is difficult to determine open error with a tester, refer to the symptom of the unit when it is in open error.
ON
: Code "20" display
W2.SW2 setting
OFF
1
6
55
10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
Type
of Switch No.
switch
Action by the switch operation
Function
1
Forced defrost +1
2
Abnormal history clear
OFF
Start
Normal
When compressor is working
in heating operation. +1
Normal
off or operating
Clear
ON
3
ON
1 2 3 4 5 6
0
ON
Dip
switch
SW1
4
Refrigerant address
setting
5
1 2 3 4 5 6
4
ON
ON
1 2 3 4 5 6
2
ON
1 2 3 4 5 6
5
1 2 3 4 5 6
9
1 2 3 4 5 6
6
1 2 3 4 5 6
7
ON
1 2 3 4 5 6
10
ON
1 2 3 4 5 6
13
1 2 3 4 5 6
3
ON
ON
ON
1 2 3 4 5 6
12
When power supply ON
1 2 3 4 5 6
11
ON
1 2 3 4 5 6
14
1 2 3 4 5 6
15
1
Test run
Operating
OFF
2
Test run mode setting
Heating
Cooling
1
Use of existing pipe
Used
Not used
Always
Start
Normal
Under suspension
Used
Not used
When power supply ON
Start
Normal
Under suspension
SW8 2
Replacement operation
Separate indoor/outdoor
3
unit power supplies
Push
switch
1 2 3 4 5 6
1
ON
ON
SW4
ON
ON
1 2 3 4 5 6
8
6
Effective timing
ON
SWP
Pump down
Under suspension
w1 Forced defrost should be done as follows.
1Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2Forced defrost will start by the above operation 1 if all these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous forced defrost finished.
• Pipe temperature is less than or equal to 8ºC[46ºF].
Forced defrost will finish if certain conditions are satisfied.
Forced defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This
depends on the service conditions.
56
Type of
Switch No.
Switch
1
SW5
SW9
Auto recovery
No auto recovery
When power supply ON
3,4,5
No function
—
—
—
6
Model select
2
Following SW5-6 reference
SW7-1
SW7-2
Setting of demand
Power consumption
(Demand switch ON)
OFF
OFF
0% (Operation stop)
control
+3
ON
OFF
50%
OFF
ON
75%
Defrost Hz setting
3
Defrost Hz % 0.54
Max Hz setting (heating) Max Hz (heating) % 0.8
Always
Normal
Always
Normal
Always
—
5
No function
—
—
6
Defrost setting
For high humidity
Normal
1
No function
—
—
Always
—
2
Function switch
Valid
Normal
Always
3,4
No function
—
—
—
1
MODEL
2
3
SW6
—
Power failure
automatic recovery +2
4
Dip
switch
No function
Effective timing
2
1
SW7
+4
Action by the switch operation
ON
OFF
—
—
Function
4
5
30N
Model select
6
36N
SW6
ON
OFF
ON
OFF
SW5-6
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
7
8
SW5
6
w2 “Power failure automatic recovery” can be set by either remote controller or this DIP SW. If one of them is set to ON,
“Auto recovery” activates. Please set “Auto recovery” basically by remote controller because all units do not have DIP SW.
Please refer to the indoor unit installation manual.
w3 SW7-1,2 are used for demand control. SW7-1,2 are effective only at the demand control.
(Refer to next page : Special function (b))
w4 Please do not use SW7-3~6 usually. Trouble might be caused by the usage condition.
(2) Function of connector
Types
Connector
Function
Connector
CN31
Emergency operation
Action by open/ short operation
57
Short
Open
Start
Normal
Effective timing
When power supply ON
Special function
(a) Low-level sound priority mode (Local wiring)
Unit enters into Low-level sound priority mode by external signal input setting.
Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual.
Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for demand
input located on the outdoor controller board enables to control compressor operation frequency.
W The performance depends on the load of conditioned outdoor temperature.
How to wire
<Low-level sound priority mode circuit>
Insulate this point securely as
this is not used.
Purchased locally
Relay
supply
Adapter for external
signal input
(PAC-SC36NA)
Red 3
Brown 2
Orange 1
~ SW1
X
CNDM
X
SW1 : Switch
X : Relay (Contact spec. : DC1mA)
Outdoor unit
controller board
Max. 10 m[33ft] including local wiring
1) Make the circuit as shown above with adapter for external signal input (PAC-SC36NA).
2) Turn SW1 to on for Low-level sound priority mode.
Turn SW1 to off to release Low-level sound priority mode and normal operation.
(b) On demand control (Local wiring)
Demand control is available by external input. In this mode, power consumption is decreased within the range of usual
0~100%.
How to wire
Basically, the wiring is same with (a).
Connect an SW 1 which is procured locally between Orange and Red (1 and 3) of the adapter for external signal
input (PAC-SC36NA), and insulate the tip of the brown lead wire.
It is possible to set it to the following power consumption (compared with ratings) by setting the SW7-1, 2.
SW7-1
SW7-2
Power consumption
(SW1 on)
OFF
OFF
0% (Operation stop)
ON
OFF
50%
OFF
ON
75%
58
<Display function of inspection for outdoor unit>
The blinking patterns of both LED1 (green) and LED2(red) indicate the types of abnormality when it occurs. Types of
abnormality can be indicated in details by connecting an optional part “A-Control Service Tool (PAC-SK52ST)”
to connector CNM on outdoor controller board.
[Display]
(1)Normal condition
Unit condition
When the power is turned on
When unit stops
When compressor is warming up
When unit operates
Outdoor controller board
LED1 (Green)
LED2 (Red)
Lighted
Lighted
Lighted
Lighted
Lighted
Not lighted
Not lighted
Lighted
A-Control Service Tool
Error code
00, etc.
08, etc.
C5, H7 etc.
Indication of the display
Alternately blinking display
Operation mode
(2)Abnormal condition
Indication
Outdoor controller board
LED1 (Green) LED2 (Red)
Error
Contents
1 blinking 2 blinking Connector (63L) is open.
Connector (63H) is open.
2 connectors are open.
2 blinking 1 blinking Miswiring of indoor/outdoor unit conne-
cting wire, excessive number of indoor
units (4 units or more)
Miswiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)
Startup time over
2 blinking Indoor/outdoor unit communication error
(signal receiving error) is detected by indoor unit.
Indoor/outdoor unit communication error
(transmitting error) is detected by indoor
unit.
Indoor/outdoor unit communication error
(signal receiving error) is detected by
outdoor unit.
Indoor/outdoor unit communication error
(transmitting error) is detected by outdoor
unit.
3 blinking Remote controller signal receiving
error is detected by remote controller.
Error
code
+1
Inspection method
Detailed
reference
page
F3 Check if connector (63L or 63H) on the outdoor controller
board is not disconnected.
F5
F9 Check continuity of pressure switch (63H) by tester.
— Check if indoor/outdoor connecting wire is connected correctly.
P.25
P.26
P.26
P.26
Check if 4 or more indoor units are connected to outdoor unit. (EA)
— Check if noise entered into indoor/outdoor connecting wire P.26
or power supply.
(Eb)
Re-check error by turning off power, and on again.
P.26
—
(EC)
E6 Check if indoor/outdoor connecting wire is connected correctly. +2
E7
—
Check if noise entered into indoor/outdoor connecting wire or
power supply.
Check if noise entered into indoor/outdoor controller board.
Re-check error by turning off power, and on again.
+2
P.31
(E8)
—
P.31
(E9)
E0 Check if connecting wire of indoor unit or remote controller P.30
is connected correctly.
Remote controller transmitting error
is detected by remote controller.
E3 Check if noise entered into transmission wire of remote
P.31
Remote controller signal receiving
error is detected by indoor unit.
E4
P.30
Remote controller transmitting error
is detected by indoor unit.
E5
4 blinking Error code is not defined.
controller.
Re-check error by turning off power, and on again.
P.31
EF Check if remote controller is MA remote controller (PAR-21MAA). P.31
Check if noise entered into transmission wire of remote controller.
Check if noise entered into indoor/outdoor connecting wire.
Re-check error by turning off power, and on again.
5 blinking Serial communication error
<Communication between outdoor
controller board and outdoor power
board>
<Communication between outdoor
controller board and M-NET P.C. board>
Communication error of M-NET
system
Ed Check if connector (CN4) on outdoor controller board and
P.31
A0~A8
P.32~
P.35
outdoor power board is not disconnected.
Check if there is poor connection of connector on outdoor
controller board (CNMNT and CNVMNT).
Check M-NET communication signal.
1.Error code displayed on remote controller
2.Refer to service manual for indoor unit.
59
Indication
Outdoor controller board
LED1 (Green) LED2 (Red)
Error
Contents
3 blinking 1 blinking Abnormality of shell thermostat
and discharging temperature (TH4)
Abnormality of superheat due
to low discharge temperature
Abnormal
high pressure (High
2 blinking
pressure switch 63H worked.)
Abnormal low pressure (Low
pressure switch 63L worked.)
3 blinking Abnormality of outdoor fan
motor rotational speed
Protection from overheat operation (TH3)
4 blinking Compressor overcurrent
breaking (Start-up locked)
Compressor overcurrent breaking
Abnormality of current sensor (P.B.)
Abnormality of power module
Open/short
of discharge thermistor (TH4)
5 blinking
Open/short of outdoor thermistors
(TH3, TH32, TH33, TH6, TH7
and TH8)
6 blinking Abnormality of heatsink
temperature
7 blinking Abnormality of voltage
4 blinking 1 blinking Abnormality of room temperature thermistor (TH1)
Abnormality of pipe temperature thermistor /Liquid (TH2)
Abnormality of pipe temperature
thermistor/Condenser-Evaporator
2 blinking Abnormality of drain sensor (DS)
Float switch connector open (FS)
Error
Inspection method
code
+1
U2 Check if stop valves are open.
Detailed
reference
page
P.27
Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller
board are not disconnected.
if unit is filled with specified amount of refrigerant.
P.28
U7 Check
Measure resistance values among terminals on indoor valve and
outdoor linear expansion valve using a tester.
P.27
U1 Check if indoor/outdoor units have a short cycle on their air ducts.
Check if connector (63H)(63L) on outdoor controller board is not disconnected.
Check if heat exchanger and filter is not dirty.
UL Measure resistance values among terminals on linear expansion valve P.30
using a tester.
U8 Check the outdoor fan motor.
P.29
Ud
UF Check if stop valves are open.
P.29
UH
U6
U3 Check if connectors (TH3,TH32,TH33,TH4, and TH7/6) on outdoor
controller board and connector (CN3) on outdoor power board are not
U4
disconnected.
P.30
P.29
P.28
P.28
P.28
U5 Check if indoor/outdoor units have a short cycle on their air ducts.
P.28
U9 Check looseness, disconnection, and converse connection of
P.29
Check if connector (TH3) on outdoor controller board is disconnected.
Check looseness, disconnection, and converse connection of
compressor wiring.
UP Measure resistance values among terminals on compressor using a tester.
Check if outdoor unit has a short cycle on its air duct.
Measure resistance value of outdoor thermistors.
Measure resistance value of outdoor thermistor (TH8).
compressor wiring.
Measure resistance value among terminals on compressor using a tester.
Check if power supply voltage decreases.
Check the wiring of CN52C.
Check the wiring of CNAF.
P1 Check if connectors (CN20, CN21, CN29 and CN44) on indoor
controller board are not disconnected.
P2 Measure resistance value of indoor thermistors.
P9
2
2
2
P4 Check if connector (CN31) (CN4F) on indoor controller board is not
2
disconnected.
Measure resistance value of indoor thermistors.
resistance value among terminals on drain-up machine using
Indoor drain overflow protection P5 Measure
a tester.
Check if drain-up machine works.
Check drain function.
3 blinking Freezing (cooling)/overheating P6 Check if indoor unit has a short cycle on its air duct.
Check if heat exchanger and filter is not dirty.
(heating) protection
Measure resistance value on indoor and outdoor fan motors.
2
Check if the inside of refrigerant piping is not clogged.
4 blinking Abnormality of pipe
temperature
P8 Check if indoor thermistors (TH2 and TH5) are not disconnected from holder.
Check if stop valve is open.
Check converse connection of extension pipe. (on plural units connection)
Check if indoor/outdoor connecting wire is connected correctly.
(on plural units connection)
1 Error code displayed on remote controller
2 Refer to service manual for indoor unit.
60
2
<Outdoor unit operation monitor function>
[When optional part “A-Control Service Tool (PAC-SK52ST)” is connected to outdoor controller board (CNM)]
Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by
controlling DIP SW2 on “A-Control Service Tool”.
Operation indicator
SW2 : Indicator change of self diagnosis
Explanation for display
Display detail
SW2 setting
Unit
ON
1 2 3 4 5 6
<Digital indicator LED1 working details>
Be sure that 1 to 6 in the SW2 are set to OFF.
(1) Display when the power supply ON
When the power supply ON, blinking displays by turns.
Wait for 4 minutes at the longest.
(2) When the display lights (Normal operation)
1Operation mode display
1 second
interval
SW2
(Lighting)
ON
LED1
(Initial setting)
1 2 3 4 5 6
The tens digit : Operation mode
Display
Operation Model
O
OFF / FAN
C
COOLING / DRY +
H
HEATING
d
DEFROSTING
The ones digit : Relay output
Warming-up
Display
Compressor
wC5 is displayed during replacement
operation.
2Display during error postponement
Postponement code is displayed when
compressor stops due to the work of
protection device.
Postponement code is displayed while
error is being postponed.
(3) When the display blinks
Inspection code is displayed when compressor
Display
Inspection unit
0
Outdoor unit
1
Indoor unit 1
2
Indoor unit 2
Display
F3
F5
F9
E8
E9
EA
Eb
EC
E0~E7
Display
U1
U2
U3
U4
U5
U6
U7
U8
Ud
UF
UH
UL
UP
P1~P8
A0~A7
Compressor
4-way valve
Solenoid valve
0
—
—
—
—
1
—
—
—
ON
2
—
—
ON
—
3
—
—
ON
ON
4
—
ON
—
—
5
—
ON
—
ON
6
—
ON
ON
—
7
—
ON
ON
ON
8
ON
—
—
—
A
ON
—
ON
—
stops due to the work of protection devices.
Contents to be inspected (During operation)
Abnormal high pressure (63H worked)
Abnormal high discharging temperature, shortage of refrigerant
Open/short circuit of discharging thermistor (TH4)
Open/short of outdoor unit thermistors (TH3, TH32, TH33, TH6, TH7 and TH8)
Abnormal temperature of heatsink
Abnormality of power module
Abnormality of superheat due to low discharge temperature
Abnormality in outdoor fan motor
Overheat protection
Compressor overcurrent interruption (When Comp. locked)
Current sensor error
Abnormal low pressure (63L worked)
Compressor overcurrent interruption
Abnormality of indoor units
Communication error of M-NET system
Contents to be inspected (When power is turned on)
63L connector (red) is open.
63H connector (yellow) is open.
2 connectors (63H/63L) are open.
Indoor/outdoor communication error (Signal receiving error) (Outdoor unit)
Indoor/outdoor communication error (Transmitting error) (Outdoor unit)
Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more)
Miswiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)
Startup time over
Communication error except for outdoor unit
61
SW2 setting
ON
Explanation for display
Display detail
Pipe temperature / Liquid (TH3)
– 40~194
1 2 3 4 5 6
– 40~194 (– 40~90:)
(When the coil thermistor detects 0˚F or below, “–”
and temperature are displayed by turns.)
(Example) When -10˚F;
0.5 secs. 0.5 secs. 2 secs.
Unit
˚F
10
Discharge temperature (TH4)
37~327
ON
1 2 3 4 5 6
ON
37~327 (3~164:)
(When the discharge thermistor detects 100˚F or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 105˚F;
0.5 secs. 0.5 secs. 2 secs.
1
05
˚F
Output step of outdoor FAN
0~10
0~10
The number of ON/OFF times of compressor
0~9999
0~9999
(When the number of times is 100 or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
100 times
(Example) When 42500 times (425 ×100 times);
0.5 secs. 0.5 secs. 2 secs.
4
25
Compressor integrating operation times
0~9999
0~9999
(When it is 100 hours or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 2450 hours (245 ×10 hours);
0.5 secs. 0.5 secs. 2 secs.
2
45
Step
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
10 hours
Compressor operating current
0~50
0~50
wOmit the figures after the decimal fractions.
Compressor operating frequency
0~225
0~255
(When it is 100Hz or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example) When 125Hz;
0.5 secs. 0.5 secs. 2 secs.
1
25
Hz
0~480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example) When 150 pulse;
0.5 secs. 0.5 secs. 2 secs.
1
50
Pulse
A
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
LEV-A opening pulse
0~480
1 2 3 4 5 6
ON
Error postponement code history (1)
of outdoor unit
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
Operation mode on error occurring
Operation mode of when operation stops due to
error is displayed by setting SW2 like below.
1 2 3 4 5 6
ON
(SW2)
ON
1 2 3 4 5 6
1 2 3 4 5 6
62
Code
display
Code
display
SW2 setting
ON
Display detail
Explanation for display
Unit
Pipe temperature/Liquid (TH3) on error
occurring
– 40~194
– 40~194 (– 40~90:)
(When the coil thermistor detects 0˚F or below, “–”
and temperature are displayed by turns.)
(Example) When –15˚F;
0.5 secs. 0.5 secs. 2 secs.
15
˚F
Compressor temperature (TH4) or
discharge temperature (TH4) on error
occurring
37~327
37~327 (3~164:)
(When the temperature is 100˚F or more, the
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 130˚F;
0.5 secs. 0.5 secs. 2 secs.
1
30
˚F
Compressor operating current on error
occurring
0~20
0~20
Error code history (1) (latest)
Alternate display of abnormal unit
number and code
When no error history,
“ 0 ” and “– –” are displayed by turns.
Error code history (2)
Alternate display of error unit number
and code
When no error history,
“ 0 ” and “– –” are displayed by turns.
Thermostat ON time
0~999
0~999
(When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example) When 245 minutes;
0.5 secs. 0.5 secs. 2 secs.
2
45
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
A
1 2 3 4 5 6
ON
Code
display
1 2 3 4 5 6
ON
Code
display
1 2 3 4 5 6
ON
1 2 3 4 5 6
Test run elapsed time
0~120
0~120
(When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example) When 105 minutes;
0.5 secs. 0.5 secs. 2 secs.
1
05
63
Minute
Minute
SW2 setting
Explanation for display
Display detail
The number of connected indoor units
ON
0~3
(The number of connected indoor units are displayed.)
Unit
Unit
1 2 3 4 5 6
Capacity setting display
Displayed as an outdoor capacity code
Capacity
HA30N
HA36N
ON
1 2 3 4 5 6
Outdoor unit setting information
ON
Code
display
• The tens digit (Total display for applied setting)
Setting details
Display details
H·P / Cooling only
0 : H·P
Single phase / 3 phase
0 : Single phase 2 : 3 phase
• The ones digit
Setting details
1 2 3 4 5 6
Code
14
20
1 : Cooling only
Display details
Defrosting switch 0 : Normal
Code
display
1 : For high humidity
(Example) When heat pump, 3 phase and defrosting
(normal) are set up, “20” is displayed.
ON
Indoor pipe temperature/Liquid (TH2(1))
Indoor 1
– 38~190
– 38~190 (– 39~88:)
(When the temperature is 0ºF or less, “–” and
temperature are displayed by turns.)
˚F
1 2 3 4 5 6
ON
Indoor pipe temperature/Cond./Eva.
(TH5(1))
Indoor 1
– 38~190
– 38~190 (– 39~88:)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
Indoor pipe temperature/Liquid (TH2(2))
Indoor 2
– 38~190
– 38~190 (– 39~88:)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
Indoor pipe temperature/Cond./Eva.
(TH5(2))
Indoor 2
– 38~190
– 38~190 (– 39~88:)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
Indoor room temperature (TH1)
46~102
46~102 (8~39:)
˚F
1 2 3 4 5 6
ON
˚F
1 2 3 4 5 6
ON
˚F
1 2 3 4 5 6
ON
˚F
1 2 3 4 5 6
64
SW2 setting
ON
Explanation for display
Display detail
Indoor setting temperature
62~86
62~86 (17~30:)
Outdoor pipe temperature/Cond./Eva.
(TH6)
-38~190
-38~190 (-39~88:)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
Outdoor outside temperature (TH7)
-38~190
-38~190 (-39~88:)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
Unit
˚F
1 2 3 4 5 6
ON
˚F
1 2 3 4 5 6
ON
˚F
1 2 3 4 5 6
Outdoor heatsink temperature (TH8)
-40~327
-40~327 (-40~164:)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
(When the thermistor detects 100˚F or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
0~327 (0~182degC)
(When the temperature is 100degF or more, hundreds digit, tens digit and ones digit are displayed
by turns.)
Discharge superheat. SHd
0~327
Cooling = TH4-TH6
Heating = TH4-TH5
0~234 (0~130degC)
(When the temperature is 100˚F or more, hundreds
digit, tens digit and ones digit are displayed
by turns.)
Sub cool. SC
0~234
Cooling = TH6-TH3
Heating = TH5-TH4
0~500
(When it is 100 or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
Input current of outdoor unit
ON
˚F
degF
degF
0.1 A
1 2 3 4 5 6
ON
0~255
(When it is 100Hz or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Targeted operation frequency
0~255
Hz
1 2 3 4 5 6
ON
180~370
(When it is 100V or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
DC bus voltage
180~370
1 2 3 4 5 6
65
V
SW2 setting
ON
1 2 3 4 5 6
ON
Explanation for display
Display detail
Capacity save
0~100
When air conditioner is connected to
M-NET and capacity save mode is
demanded, “0”~”100” is displayed.
When there is no setting
of capacity save “100” is
displayed.
Error postponement code history (2)
of outdoor unit
0~100
(When the capacity is 100%, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 100%;
0.5 secs. 0.5 secs. 2 secs.
1
00
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
1 2 3 4 5 6
Error postponement code history (3)
of outdoor unit
ON
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
1 2 3 4 5 6
ON
Error code history (3) (Oldest)
Alternate display of abnormal unit
number and code.
%
Code
display
Code
display
When no error history, “0” and “– –“ are displayed by
turns.
Code
display
1 2 3 4 5 6
Error thermistor display
ON
Unit
When there is no error thermistor,
“–“ is displayed.
3:
6:
7:
8:
Outdoor
Outdoor
Outdoor
Outdoor
pipe temperature /Liquid (TH3, TH32)
pipe temperature /Cond./Eva. (TH6)
outside temperature (TH7)
radiator panel (TH8)
1 2 3 4 5 6
Operation frequency on error occurring
0~255
ON
1 2 3 4 5 6
Fan step on error occurring
0~10
0~255
(When it is 100Hz or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
(Example) When 125Hz;
0.5 secs. 0.5 secs. 2 secs.
1
25
Code
display
Hz
0~10
ON
Step
1 2 3 4 5 6
66
SW2 setting
Display detail
Explanation for display
LEV-A opening pulse on error occurring
0~480
0~480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 130 pulse;
0.5 secs. 0.5 secs. 2 secs.
1
30
ON
1 2 3 4 5 6
ON
Indoor room temperature (TH1) on error
occurring
46~102
Unit
Pulse
46~102 (8~39°C)
˚F
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Indoor pipe temperature/Liquid (TH2) on -38~190 (-39~88°C)
error occurring
(When the temperature is 0˚F or less, “–” and
-38~190
temperature are displayed by turns.)
(Example) When –15˚F;
0.5 secs. 0.5 secs. 2 secs.
15
Indoor pipe temperature/Cond./Eva.
(TH5) on error occurring
-38~190
-38~190 (-39~88°C)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
(Example) When –15˚F;
0.5 secs. 0.5 secs. 2 secs.
1 2 3 4 5 6
ON
Outdoor pipe temperature/Cond./Eva.
(TH6) on error occurring
-38~190
-38~190 (-39~88°C)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
(Example) When –15˚F;
0.5 secs. 0.5 secs. 2 secs.
˚F
15
Outdoor ambient temperature (TH7) on
error occurring
-38~190
1 2 3 4 5 6
ON
˚F
15
1 2 3 4 5 6
ON
˚F
Outdoor heatsink temperature (TH8) on
error occurring
-40~392
1 2 3 4 5 6
67
-38~190 (-39~88°C)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
(Example) When –15˚F;
0.5 secs. 0.5 secs. 2 secs.
15
-40~392 (-40~200°C)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
(When the temperature is 100˚F or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
˚F
˚F
SW2 setting
ON
1 2 3 4 5 6
Display detail
Discharge superheat on error occurring
SHd
0~327
Cooling = TH4-TH6
Heating = TH4-TH5
Sub cool on error occurring. SC
0~234
ON
Cooling = TH6-TH3
Heating = TH5-TH2
1 2 3 4 5 6
Thermo-on time until error stops
0~999
ON
1 2 3 4 5 6
U9 Error status during the Error
postponement period
ON
1 2 3 4 5 6
Explanation for display
Unit
0~327 (0~182degC)
(When the temperature is 100degF or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 150degF;
0.5 secs. 0.5 secs. 2 secs.
1
50
0~234 (0~130degC)
(When the temperature is 100degF or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 115degF;
0.5 secs. 0.5 secs. 2 secs.
1
15
0~999
(When it is 100 minutes or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 415 minutes;
0.5 secs. 0.5 secs. 2 secs.
4
15
Description
Normal
Overvoltage error
Undervoltage error
Input current sensor error
L1 or L2-phase open error
Abnormal power
synchronous signal
ACTM error
Undervoltage
Detection point
Power circuit board
Controller circuit board
Display
00
01
02
Controller circuit board
04
Power circuit board
08
Check CNAF wiring.
Defective ACTM/ P.B
20
degF
degF
Minute
Code
display
Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L1 phase open error (04) + ACTM error (20) = 24
ON
LEV-B opening pulse
0~480
0~480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Pulse
1 2 3 4 5 6
LEV-C opening pulse
0~480
ON
0~480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Pulse
1 2 3 4 5 6
Outdoor pipe temperature (TH33)
-38~190
ON
1 2 3 4 5 6
-38~190 (-39~88°C)
(When the temperature is 0˚F or less, “–” and
temperature are displayed by turns.)
(Example) When –15˚F;
0.5 secs. 0.5 secs. 2 secs.
15
68
˚F
SW2 setting
Explanation for display
Display detail
Controlling status of compressor
operating frequency
Unit
The following code will be a help to know the
operating status of unit.
•The tens digit
Display Compressor operating frequency control
1
Primary current control
2
Secondary current control
ON
•The ones digit (In this digit, the total number of
1 2 3 4 5 6
activated control is displayed.)
Display Compressor operating frequency control
Preventive control for excessive temperature
1
rise of discharge temperature
Preventive control for excessive temperature
2
rise of condensing temperature
4
Frosting preventing control
Preventive control for excessive temperature
8
rise of heatsink
(Example)
The following controls are activated.
LED
• Primary current control
• Preventive control for excessive temperature rise of condensing temperature
• Preventive control for excessive temperature rise of heatsink
69
Code
display
11
●
●
EASY MAINTENANCE FUNCTION
Reduces maintenance work drastically.
Enables you to check operation data of the indoor and outdoor units by remote controller.
Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even for
inverter models.
Smooth Maintenance Function
Discharge temperature 147°F
●Conventional inspection work
●Outdoor unit ●
●Indoor unit ●
Measure
the intake air
temperature.
Remove the
service panel.
■Easy maintenance information (unit)
Compressor
Outdoor unit
Accumulated operating
Indoor unit
time (%10 hours)
Number of ON/OFF
times (%10 times)
Heat exchanger
temperature (°F)
Discharge
temperature (°F)
Operating
current (A)
Outside air
temperature (°F)
Measure the discharge
temperature.
Intake air
temperature (°F)
Heat exchanger
temperature (°F)
Measure the outside air
temperature
Filter operating
time* (Hours)
* The filter operating time is the time that has elapsed since the filter was reset.
11-1.MAINTENANCE MODE OPERATION METHOD
*
If you are going to use the "11-2.GUIDE FOR OPERATION CONDITION", set the airflow to "High" before activating maintenance mode.
●
Switching to maintenance mode
Maintenance mode can be activated either when the air conditioner is operated or stopped.
It cannot be activated during test run.
+ Maintenance information can be viewed even if the air conditioner is stopped.
■Remote controller button information
Operation mode
Compressor information Outdoor unit information Indoor unit information
Confirm
Activate/cancel maintenance mode
(1) Press the TEST button for 3 seconds to switch to maintenance mode.
[Display ] MAINTENANCE
If stable operation is unnecessary or if you want to check the data with the air conditioner stopped, skip to step (4).
●
Fixed Hz operation
The operating frequency can be fixed to stabilize operation of inverter model.
If the air conditioner is currently stopped, start it by this operation.
(2) Press the
[Display ]
MODE button to select the desired operation mode.
Stable cooling
operation
Stable heating
operation
Stable operation
cancellation
COOL
STABLE MODE
HEAT
STABLE MODE
STABLE MODE
CANCEL
(3) Press the FILTER ( ) button to confirm the setting.
Stabilized
[Display ] Waiting for stabilization
After 10 to 20 minutes
70
●
Data measurement
When the operation is stabilized, measure operation data as explained below.
(4) Press the [TEMP] buttons (
and
) to select the desired refrigerant address.
[Screen ]
(5) Select the type of data to be displayed.
After selecting, go to step (6).
Compressor information
MENU button
[Display ]
Cumulative
operation time
ON/OFF Number
COMP ON
%10 HOURS
COMP ON
%100 TIMES
Operating current
COMP ON
CURRENT (A)
Outdoor unit information
ON/OFF button
exchanger
Heat
temperature
[Display ]
OUTDOOR UNIT
H·EXC. TEMP
Comp discharge
temperature
OUTDOOR UNIT
OUTLET TEMP
Outdoor ambient
temperature
OUTDOOR UNIT
OUTDOOR TEMP
Indoor unit information
button
[Display ]
Indoor room
temperature
Heat exchanger
temperature
INDOOR UNIT
INLET TEMP
INDOOR UNIT
H·EXC. TEMP
Filter operating
time
INDOOR UNIT
FILTER USE H
(6) Press the FILTER ( ) button to confirm the setting.
[Display example for accumulated operating time]
Flashing
Display Waiting for response
After approx.
10 seconds
12,340 hours
(7) Data is displayed on the display (at ).
To check the data for each item, repeat steps (5) to (7).
(8) To cancel maintenance mode, press the
TEST
button for 3 seconds or press the
■
Refrigerant address
Single refrigerant system
ON/OFF
button.
Multi refrigerant system (group control)
In the case of single refrigerant system, the refrigerant address
is "00" and no operation is required.
Simultaneous twin units belong to this category
(single refrigerant system).
[1:1]
Refrigerant
address=00
[Twin]
Refrigerant
address=00
Outdoor
unit
Outdoor
unit
Indoor unit
01
Indoor unit
01
Remote
controller
Remote
controller
Indoor unit
02
Up to 16 refrigerant systems (16 outdoor units) can be connected as a group by one remote controller. To check or set the
refrigerant addresses.
Refrigerant
address
00
Outdoor
unit
Refrigerant
address
01
Outdoor
unit
Refrigerant
address
02
Outdoor
unit
Refrigerant
address
15
Outdoor
unit
Indoor unit
01
Indoor unit
01
Indoor unit
01
Indoor unit
01
Remote
controller
71
11-2.GUIDE FOR OPERATION CONDITION
Retightened
Retightened
Retightened
M
V
Accumulated operating time
Cleanliness
CleanliTemperature
Temperature
ness
Enter the temperature differences between , , and into
the graph given below.
Operation state is determined according to the plotted areas on
the graph.
For data measurements, set the fan speed to "Hi" before activating maintenance mode.
Time
Number of ON/OFF times
Times
Current
A
Classification
Refrigerant/heat exchanger temperature
COOL
°F HEAT
°F
Refrigerant/discharge temperature
COOL
°F HEAT
°F
Air/outside air temperature
COOL
°F HEAT
°F
(Air/discharge temperature)
COOL
°F HEAT
°F
Appearance
Good
Cleaning required
Heat exchanger
Good
Cleaning required
Sound/vibration
None
Present
Air/intake air temperature
°F
COOL
°F HEAT
°F
Refrigerant/heat exchanger temperature COOL
°F HEAT
°F
Time
Decorative panel
Good
Cleaning required
Filter
Good
Cleaning required
Fan
Good
Cleaning required
Heat exchanger
Good
Cleaning required
Sound/vibration
None
Present
Is "000" displayed stably in Display on the remote controller?
Temperature ( Discharge temperature) – ( Outdoor
difference
Inspection
Is "000" displayed stably in Display on the remote controller?
difference
Filter may be clogged. *1
Inspection A
Performance has dropped. Detailed in-
Heat
spection is necessary.
Inspection B
Refrigerant amount is dropping.
Inspection C
Filter or indoor heat exchanger may be
( Indoor intake air temperature)— (Indoor
heat exchanger temperature)
Normal operation state
Filter inspection
°F
heat exchanger temperature)
°F
* Fixed Hz operation may not be possible under the following temperature ranges.
A)In cool mode, outdoor intake air temperature is 104 °For higher or
indoor intake air temperature is 73 °F or lower.
B)In heat mode, outdoor intake air temperature is 68 °F or higher or
indoor intake air temperature is 77 °F or lower.
* If the air conditioner is operated at a temperature range other than the
ones above but operation is not stabilized after 30 minutes or more have
elapsed, carry out inspection.
* In heat mode, the operation state may vary due to frost forming on the
outdoor heat exchanger.
Result
Normal
Stable Unstable
( Indoor intake air temperature)
Judgment
Cool
°F
Temperature ( Discharge temperature) – ( Indoor
Cool mode
Check item
°F
heat exchanger temperature)
( Indoor heat exchanger temperature) –
* The filter operating time is the time that has elapsed since the filter was reset.
Area
Stable Unstable
( Indoor intake air temperature) – (
°F HEAT
Filter operating time*
Result
Indoor heat exchanger temperature)
COOL
(Air/discharge temperature)
Inspection
Item
Heat mode
°F
°F
81
81
72
Inspection C
63
54
45
36
Filter inspection
Normal
27
18
Inspection B
Inspection A
9
0 18 36 54 72 90 108 126 144
°F
[ Discharge temperature] – [ Outdoor
heat exchanger temperature)
clogged.
*
The above judgement is just guide based on Japanese standard
conditions.
It may be changed depending on the indoor and outdoor temperature.
* 1 It may be judged as “filter inspection” due to the outdoor and indoor
temperature, even though it is not clogged.
72
( Indoor heat exchanger temperature) —
( Indoor intake air temperature)
Good
Good
Cool
Outdoor Unit
Indoor Unit
(Voltage)
pressor
Outdoor Unit
Good
(Insulation resistance)
Com-
Indoor Unit
Terminal block
Check Points
Result
Breaker
Heat
Loose connection
Power supply
Inspection item
72
Inspection C
Filter inspection
63
54
45
Normal
36
27
18
Inspection B
Inspection A
9
18 36 54 72 90 108 126 144
°F
[ Discharge temperature] – [ Indoor
heat exchanger temperature)
12
FUNCTION SETTING
12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER
Each function can be set according to necessity using the remote controller. The setting of function for each unit is possible by
only the remote controller. Select function available from the table 1.
(1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.)
<Table 1> Function selections
Function
Settings
Power failure
automatic recovery
Indoor temperature
detecting
Not available
Available
Average data from each indoor unit
Data from the indoor unit with remote controllers
Data from main remote controller
Not supported
Supported (indoor unit dose not intake outdoor air through LOSSNAY)
Supported (indoor unit intakes outdoor air through LOSSNAY)
230V
208V
Auto energy-saving operation ON
Auto energy-saving operation OFF
2 [36°F] (Normal)
3 [37°F]
When the compressor operates, the humidifier also operates.
When the fan operates, the humidifier also operates.
Standard
For high humidity
LOSSNAY
connectivity
Power supply
voltage
Auto mode
(only for PUZ)
Frost prevention
temperature
Humidifier control
Change of
defrosting control
Mode No. Setting No.
01
02
03
04
05
15
16
17
: Initial setting
(when sent from the factory)
1
2
1
2
3
1
2
3
1
2
1
2
1
2
1
2
1
2
Remarks
The setting is
applied to all
the units in the
same
refrigerant
system.
Meaning of "Function setting"
mode02:indoor temperature detecting
OUTDOOR
OUTDOOR
INDOOR
INDOOR
INDOOR
INDOOR
OUTDOOR
OUTDOOR
INDOOR
INDOOR
No. Indoor temperature (ta)=
REMOTE
(MAIN)
No.1 Average data of the
sensor on all the
indoor units
REMOTE
(MAIN)
REMOTE
(SUB)
Initial ta=(A+B)/2
setting
REMOTE
(SUB)
REMOTE
(MAIN)
REMOTE
(SUB)
REMOTE
(MAIN)
ta=(A+B)/2
ta=A
ta=A
No.2 Data of the sensor
on the indoor unit that
connected
with remote controller
ta=A
ta=B
ta=A
ta=A
No.3 Data of the sensor
on main remote
controller
ta=C
ta=C
ta=C
ta=C
73
(2) Functions available when setting the unit number to 01-03 or AL (07 in case of wireless remote controller)
• When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the
indoor unit number.
• When setting functions for a simultaneous twin indoor unit system, set the unit number to 01 to 03 for each indoor
unit in case of selecting different functions for each unit referring to 4 setting the indoor unit number.
• When setting the same functions for an entire simultaneous Twin-indoor unit system, set refrigerant address to AL
(07 in case of wireless remote controller) referring to 4 setting the indoor unit number.
Function
Filter sign
Air flow
(Fan speed)
No.of air outlets
Optional high efficiency
filter
Vane setting
Energy saving air
flow (Heating mode)
Optional humidifier
(PLA only)
Vane differential setting
in heating mode
(cold wind prevention)
Swing
Set temperature in heating
mode (4 deg up)
Fan speed when the
heating thermostat is OFF
Fan speed when the
cooling thermostat is OFF
Detection of abnormality of
the pipe temperature (P8)
Mode Setting
No.
No.
Settings
100h
2500h
"Clean the filter" indicator is not displayed
Quiet
Standard
High ceiling
4 directions
3 directions
2 directions
Not supported
Supported
No vanes (Vane No.3 setting : PLA only)
Vane No.1 setting
Vane No.2 setting
Disabled
Enabled
Not supported
Supported
No.1 setting (TH5: 24-28)
No.2 setting (Standard, TH5:28-32)
No.3 setting (TH5: 32-38)
Not available Swing
PLA-BA
Available
Wave air flow
Available
Temperature correction: Valid
PLA-BA
Not available Temperature correction: Invalid
Extra low
Stop
Keeping fan speed set by remote controller
Keeping fan speed set by remote controller
Stop
Detect
Neglect
}
}
07
08
09
10
11
12
13
14
23
24
25
27
28
1
2
3
1
2
3
1
2
3
1
2
1
2
3
1
2
1
2
1
2
3
1
2
1
2
1
2
3
1
2
1
2
Mode No.11
Setting No.
Settings
1
Vane No.3 setting
2
Vane No.1 setting
3
Vane No.2 setting
PLA-BA
Less smudging
( Downward position than the standard )
Standard
Less draft *
( Upward position than the standard )
* Be careful of the smudge on ceiling.
74
: Initial setting (Factory setting)
- : Not available
4-Way
Wall
cassette
mounted
PKA-GA(L)
PLA-BA
PKA-FA(L)
-
-
12-1-1. Selecting functions using the wired remote controller
First, try to familiarize yourself with the flow of the function selection procedure. In this section, an example of setting the room
temperature detection position is given.
For actual operations, refer to steps to .
Setting number
Refrigerant address
Unit number
Mode number
Modes 01 to 14 can be activated
by pressing buttons and simultaneously, and modes 15 to
28 by pressing buttons and .
Selecting functions using the wired remote controller
Check the function selection setting.
Switch to function setting mode.
(Press and at the same time
with stop the remote controller.)
For modes 15 and higher,
press and at the same time.
Specify refrigerant address 00 (outdoor unit).
Specify unit No. 00. (indoor unit)
(Use and .)
Enter the setting.
(Press .)
NO
Select mode No. 02
(room temperature detection position).
Select setting No. 03 (remote controller fixed).
(Use and .)
Enter the setting.
(Press .)
Finished
YES
(Specified indoor unit:
FAN operation)
Example:
Selecting room temperature
detection position
Change refrigerant
address or unit No.
NO
YES
End function display.
(Press and at the same time.)
The above procedure must be carried out only if changes are necessary.
75
[Operating Procedure]
Check the setting items provided by function selection.
If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps to , fill in the "Check" column in Table 1, then change them as necessary. For initial settings, refer to the indoor unit's installation manual.
Switch off the remote controller.
Hold down the FILTER (
mode is 15 to 28) and TEST
buttons simultaneously for at least 2 seconds. FUNCTION
SELECTION will start to blink,
then the remote controller's display content will change as shown below.
Set the outdoor unit's refrigerant address.
Press the [ CLOCK] buttons (
and
) to select the desired
refrigerant address. The refrigerant address changes from "00" to "15".
(This operation is not possible for single refrigerant systems.)
Refrigerant address
display section
* If the unit stops after FUNCTION
blinked for 2 seconds or "88" blinks in the room temperature display area for 2 seconds, a transmission error may have occurred.
SELECTION
Check to see if there are any sources of noise or interference near the transmission path.
Note : If you have made operational mistakes during this procedure, exit function selection (see step ), then restart from step .
Set the indoor unit number.
Press the
area.
ON/OFF button so that "- -" blinks in the unit number display
CLOCK] buttons (
and
) to select the unit number
Press the [
of the indoor unit for which you want to perform function selection. The unit
number changes to "00", "01", "02","03",04" and "AL" each time a button is
pressed.
Unit number
display section
* To set modes 01 to 06 or 15 to 22, select unit number "00".
* To set modes 07 to 14 or 23 to 28, carry out as follows:
To set each indoor unit individually, select " 01" to "04".
To set all the indoor units collectively, select " AL".
When the refrigerant address and unit number are confirmed by pressing the
MODE button, the corresponding indoor unit will start fan operation. This
helps you find the location of the indoor unit for which you want to perform function
selection. However, if "00" or "AL" is selected as the unit number, all the indoor
units corresponding to the specified refrigerant address will start fan operation.
Confirm the refrigerant address and unit number.
Press the MODE button to confirm the refrigerant address and unit
number.
After a while, "- - " will start to blink in the mode number display area.
Example) When the refrigerant address is set to 00 and the unit number is 02.
00 refrigerant address
Outdoor unit
Mode number
display section
*
Indoor unit
"88" will blink in the room temperature display area if the selected refrigerant
address does not exist in the system.
Furthermore, if "F" appears and blinks in the unit number display area and the
refrigerant address display area also blinks, there are no units that correspond to the selected unit number. In this case, the refrigerant address and unit
number may be incorrect, so repeat steps and to set the correct ones.
Designate operation
*
Unit number 01
Unit number 02
Remote controller
Fan draft
When grouping different refrigerant systems, if an indoor unit other than the
one to which the refrigerant address has been set to perform fan operation,
there may be another refrigerant address that is the same as the specified one.
In this case, check the DIP switch of the outdoor unit to see whether such a
refrigerant address exists.
Select the mode number.
Press the [
TEMP] buttons (
and
) to set the desired mode
number.
(Only the selectable mode numbers can be selected.)
Select the setting content for the selected mode.
Press the
MENU button. The currently selected setting number will
blink, so check the currently set content.
Setting number display section
Mode number
display section
Mode number 02 = Indoor temperature detection
Press the [
number.
Setting number 1 = Indoor unit operating average
Register the settings you have made in steps to .
Press the MODE button. The mode number and setting number will start
to blink and registration starts.
TEMP] buttons (
and
) to select the desired setting
Setting number 3 = Remote controller built-in sensor
The mode number and setting number will stop blinking and remain lit, indicating the
end of registration.
" blinks in the room temperature display area, a transmission error may have occurred.
* If " - - - " is displayed for both the mode number and setting number and "
Check to see if there are any sources of noise or interference near the transmission path.
If you wish to continue to select other functions, repeat steps to .
Complete function selection.
Hold down the FILTER (
mode is 15 to 28) and TEST buttons * Do not operate the remote controller for at least 30 seconds after completing
function selection. (No operations will be accepted even if they are made.)
simultaneously for at least 2 seconds.
After a while, the function selection screen will disappear and the air conditioner OFF screen will reappear.
Note
If a function of an indoor unit is changed by function selection after installation is complete, make sure that a " " mark, etc., is given in the "Check" column of Table
1 to indicate the change.
76
12-1-2. Selecting functions using the wireless remote controller (Type C)
Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refrigerant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller.
[Flow of function selection procedure]
The flow of the function selection procedure is shown below. This example shows how to turn
off the function that raises the set temperature by 4 degrees during HEAT operation.
The procedure is given after the flow chart.
Check the function selection setting.
CHECK
Switch to function selection mode.
(Enter address "50" in troubleshooting
mode, then press the HOUR button.)
TEMP
ON/OFF
MODE
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
SET
h
min
TEST RUN
RESET
CLOCK
Troubleshooting mode is the mode entered when
you press the CHECK button twice to display
"CHECK".
Specify unit No. "01" (since the function applies to unit 01).
(Set address "01" while still in troubleshooting mode, then press the MINUTE button.)
Note: You can't specify the refrigerant address.
NO
Select mode No. "24" (function that raises set temperature by 4 degrees during HEAT operation).
(Set address "24" while still in troubleshooting mode, then press the HOUR button.)
YES
Change
unit No.
Select setting No. "02" (OFF).
(Set address "02" while still in troubleshooting mode, then press the HOUR button.)
Finished NO
YES
End function selection mode. Note: When you switch to function selection mode
on the wireless remote controller's operation
(End troubleshooting mode.)
area, the unit ends function selection mode
automatically if nothing is input for 10 minutes
or longer.
[Operating instructions]
1 Check the function settings.
CHECK
2 Press the
button twice continuously. → CHECK is lit and “00” blinks.
Press the temp
button once to set “50”. Direct the wireless remote controller toward the receiver of the indoor unit and press
h
the
button.
3 Set the unit number.
Press the temp
button to set the unit number. (Press “01” to specify the indoor unit whose
unit number is 01.)
min
Direct the wireless remote controller toward the receiver of the indoor unit and press the
button.
min
By setting unit number with the
button, specified indoor unit starts performing fan operation.
Detect which unit is assigned to which number using this function. If unit number is set to AL, all the indoor units in same
refrigerant system start performing fan operation simultaneously.
* If a unit number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the unit number
setting.
* If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the unit number
setting.
4 Select a mode.
Press the temp
button to set a mode. Press “24” to turn on the function that raises the set temperature by 4 degree
h
during heat operation. Direct the wireless remote controller toward the sensor of the indoor unit and press the
button.
→ The sensor-operation indicator will blink and beeps will be heard to indicate the current setting number.
Current setting number: 1 = 1 beep (one second)
2 = 2 beeps (one second each)
3 = 3 beeps (one second each)
* If a mode number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the mode
number.
* If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the mode
number.
5 Select the setting number.
Press the temp
button to select the setting number. (02: Not available)
h
Direct the wireless remote controller toward the receiver of the indoor unit and press the
button.
→ The sensor-operation indicator will blink and beeps will be heard to indicate the setting number.
Setting number: 1 = 2 beeps (0.4 seconds each)
2 = 2 beeps (0.4 seconds each, repeated twice)
3 = 2 beeps (0.4 seconds each, repeated three times)
* If a setting number that cannot be recognized by the unit is entered, the setting will turn back to the original setting.
* If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the setting number.
6 Repeat steps 4 and 5 to make an additional setting without changing unit number.
7 Repeat steps 3 to 5 to change unit number and make function settings on it.
8 Complete the function settings
Press
button.
* Do not use the wireless remote controller for 30 seconds after completing the function setting.
77
12-2. FUNCTION SELECTION OF REMOTE CONTROLLER
The setting of the following remote controller functions can be changed using the remote controller function selection mode.
Change the setting when needed.
Item 2
Item 1
Language setting to display
1.Change language
("CHANGE LANGUAGE")
(1) Operation function limit setting (operation lock) ("LOCKING FUNCTION")
2.Function limit
("FUNCTION SELECTION") (2) Use of automatic mode setting ("SELECT AUTO MODE")
(3) Temperature range limit setting ("LIMIT TEMP FUNCTION")
3.Mode selection
(1) Remote controller main/sub setting ("CONTROLLER MAIN/SUB")
("MODE SELECTION")
(2) Use of clock setting ("CLOCK")
(3) Timer function setting ("WEEKLY TIMER")
(4) Contact number setting for error situation ("CALL.")
Item 3 (Setting content)
• Display in multiple languages is possible.
• Setting the range of operation limit (operation lock)
• Setting the use or non-use of "automatic" operation mode
• Setting the temperature adjustable range (maximum, minimum)
• Selecting main or sub remote controller
* When two remote controllers are connected to one group, one controller must be set to sub.
• Setting the use or non-use of clock function
• Setting the timer type
• Contact number display in case of error
• Setting the telephone number
• Setting the temperature unit ( or °F) to display
• Setting the use or non-use of the display of indoor (room) air temperature
• Setting the use or non-use of the display of "Cooling" or "Heating" display during
operation with automatic mode
(1) Temperature display /°F setting ("TEMP MODE /°F")
4.Display change
("DISP MODE SETTING") (2) Room air temperature display setting ("ROOM TEMP DISP SELECT")
(3) Automatic cooling/heating display setting ("AUTO MODE DISP C/H")
[Function selection flowchart] Refer to next page.
[1] Stop the air conditioner to start remote controller function selection mode. [2] Select from item1. [3] Select from item2. [4] Make the setting.
(Details are specified in item3) [5] Setting completed. [6] Change the display to the normal one. (End)
[Detailed setting]
[4] -1. CHANGE LANGUAGE setting
The language that appears on the dot display can be selected.
• Press the [ MENU] button to change the language.
Japanese (JP), English (GB), German (D), Spanish (E),
Russian (RU), Italian (I), Chinese (CH), French (F)
[4] -3. Mode selection setting
(1) Remote controller main/sub setting
• To switch the setting, press the [ ON/OFF] button.
Main : The controller will be the main controller.
Sub : The controller will be the sub controller.
(2) Use of clock setting
• To switch the setting, press the [ ON/OFF] button.
ON : The clock function can be used.
OFF : The clock function cannot be used.
[4] -2. Function limit
(1) Operation function limit setting (operation lock)
• To switch the setting, press the [ ON/OFF] button.
no1 : Operation lock setting is made on all buttons other than
the [ ON/OFF] button.
no2 : Operation lock setting is made on all buttons.
OFF (Initial setting value) : Operation lock setting is not made
* To make the operation lock setting valid on the normal screen, it is
necessary to press buttons (Press and hold down the [FILTER]
and [ ON/OFF] buttons at the same time for 2 seconds.) on
the normal screen after the above setting is made.
.
(3) Timer function setting
• To switch the setting, press the [ ON/OFF] button (Choose one of
the followings.).
WEEKLY TIMER (initial setting): The weekly timer can be used.
AUTO OFF TIMER: The auto off timer can be used.
SIMPLE TIMER: The simple timer can be used.
TIMER MODE OFF: The timer mode cannot be used.
* When the use of clock setting is OFF, the "WEEKLY TIMER" cannot be
used.
(2) Use of automatic mode setting
When the remote controller is connected to the unit that has automatic operation mode, the following settings can be made.
• To switch the setting, press the [ ON/OFF] button.
ON (Initial setting value) : The automatic mode is displayed when
the operation mode is selected.
OFF
: The automatic mode is not displayed
when the operation mode is selected.
(3) Temperature range limit setting
After this setting is made, the temperature can be changed within the set range.
• To switch the setting, press the [ ON/OFF] button.
LIMIT TEMP COOL MODE :
The temperature range can be changed on cooling/dry mode.
LIMIT TEMP HEAT MODE :
The temperature range can be changed on heating mode.
LIMIT TEMP AUTO MODE :
The temperature range can be changed on automatic mode.
OFF (initial setting) : The temperature range limit is not active.
* When the setting, other than OFF, is made, the temperature range limit setting
on cooling, heating and automatic mode is made at the same time. However
the range cannot be limited when the set temperature range has not changed.
• To increase or decrease the temperature, press the [ TEMP ( ) or ( )] button.
• To switch the upper limit setting and the lower limit setting, press the [
]
button. The selected setting will flash and the temperature can be set.
• Settable range
Cooling/Dry mode : Lower limit: 19 ~ 30 , 67°F~87°F
Upper limit: 30 ~ 19 , 87°F~67°F
Heating mode :
Lower limit: 17 ~ 28 , 63°F~83°F
Upper limit: 28 ~ 17 , 83°F~63°F
Automatic mode : Lower limit: 19 ~ 28 , 67°F~83°F
Upper limit: 28 ~ 19 , 83°F~67°F
(4) Contact number setting for error situation
• To switch the setting, press the [ ON/OFF] button.
CALL OFF : The set contact numbers are not displayed in case of error.
CALL **** *** **** : The set contact numbers are displayed in case
of error.
CALL_
: The contact number can be set when the display is as
shown on the left.
• Setting the contact numbers
To set the contact numbers, follow the following procedures.
Move the flashing cursor to set numbers. Press the [ TEMP. ( ) and
( )] button to move the cursor to the right (left). Press the [ CLOCK
( ) and ( )] button to set the numbers.
[4] -4. Display change setting
(1) Temperature display / °F setting
• To switch the setting, press the [
ON/OFF] button.
: The temperature unit is used.
°F : The temperature unit °F is used.
(2) Room air temperature display setting
• To switch the setting, press the [ ON/OFF] button.
ON : The room air temperature is displayed.
OFF : The room air temperature is not displayed.
(3) Automatic cooling/heating display setting
• To switch the setting, press the [ ON/OFF] button.
ON : One of "Automatic cooling" and "Automatic heating" is displayed
under the automatic mode is running.
OFF : Only "Automatic" is displayed under the automatic mode.
78
[Function selection flowchart]
Setting language (English)
Normal display
(Display when the air conditioner is not running)
Hold down the button and press the button for 2 seconds.
Press the operation mode button.
Press theTIMER MENU button.
Press theTIMER ON/OFF button.
Hold down the button and press the button for 2 seconds.
Remote controller function selection mode
Item 1
Change
Language
Item 2
English
Dot display
German
Spanish
TEMP.
Russian
Italian
MENU
BACK
MONITOR/SET
Japanese
CLEAR
Item 3
Operation lock setting is not used.
(Initial setting value)
OFF
no1
Operation lock setting is except On/Off button.
Operation lock setting is all buttons.
no2
The automatic mode is displayed when the operation
mode is selected. (Initial setting value)
ON
OPERATION
CHECK TEST
French
Function
selection
FILTER
DAY
CLOCK
PAR-21MAA
Chinese
ON/OFF
ON/OFF
The automatic mode is not displayed when the operation mode
is selected.
OFF
The temperature range limit is not active. (Initial setting value)
OFF
The temperature range can be changed on cooling/dry mode
.
The temperature range can be changed on heating mode.
The temperature range can be changed on automatic mode.
Automatic filter elevation panel up/down operation mode
Not necessary to set this mode. Refer to OPERATION MANUAL of
Optional Parts (Panel) for details on operation.
Mode
selection
Fixed air flow direction mode
Not necessary to set this mode. Refer to OPERATION MANUAL of
indoor unit for details on operation.
The remote controller will be the main controller. (Initial setting value)
OFF
°C
Weekly timer can be used. (Initial setting value)
*
Auto off timer can be used.
*
Simple timer can be used.
*
Timer mode cannot be used.
The set contact numbers are not displayed in case of error.
(Initial setting value)
The set contact numbers are displayed in case of error.
The temperature unit °C is used.
Room air temperature is displayed. (Initial setting value)
OFF
OFF
*
The temperature unit °F is used. (Initial setting value)
ON
79
CALL-
ON
°F
The clock function cannot be used.
OFF
Display
mode setting
The clock function can be used. (Initial setting value)
One of the
description
marked *
on the right
will be
displayed.
(current
setting)
The remote controller will be the sub controller.
ON
Room air temperature is not displayed.
One of “Automatic cooling” and “Automatic heating” is displayed
under the automatic mode is running. (Initial setting value)
Only “Automatic” is displayed under the automatic mode.
12-3. Function selection of wireless remote controller
TEMPERATURE DISPLAY -C/-F SETTING (Change of temp mode from -F to -C)
1 Press the set button with something sharp at the end. MODEL SELECT blinks.
2 Press the
3 Press the
AUTO START
button. “F:” blinks.
button. “C:” blinks.
4 Press the set button with something sharp at the end. MODEL SELECT is lighted for 3 seconds, then turned off.
COOL
DRY
AUTO
FAN
HEAT
CHECK TEST
MODEL RUN
SELECT
FAN
°F
°C
STOP AMPM
SWING
START AMPM
NOT AVAILABLE
ON/OFF
TEMP
MODE
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
TEST RUN
SET
h
min
RESET
CLOCK
80
13
MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER
13-1. HOW TO "MONITOR THE OPERATION DATA"
•
Turn on the [Monitoring the operation data]
Example) Request code "004"
Discharge temperature 156°F
Refrigerant address "00"
(7)
(3)
(5)
(1)
(2) (6)
(4)
(1) Press the
TEST
A: Mode display
B: Refrigerant address
C: Data display area
D: Request code display area
button for 3 seconds so that [Maintenance mode] appears on the screen (at ).
(2) Press the CHECK button for 3 seconds to switch to [Maintenance monitor].
Note) It is not possible to switch to [Maintenance monitor] during data request in maintenance mode (i.e., while "- - - -" is blinking),
since no buttons are operative.
Operating the service inspection monitor
[ - - - ] appears on the screen (at ) when [Maintenance monitor] is activated.
(The display (at ) now allows you to set a request code No.)
and
) to select the desired refrigerant address.
(3) Press the [TEMP] buttons (
[Screen ]
(4) Press the [CLOCK] buttons (
and
) to set the desired request code No.
(5) Press the FILTER button to perform data request.
(The requested data will be displayed at in the same way as in maintenance mode.)
Data collected during operation of the remote controller will be displayed.
The collected data such as temperature data will not be updated automatically even if the data changes.
To display the updated data, carry out step (4) again.
Canceling the Monitoring the operation data
(6) While [Maintenance monitor] is displayed, press the
(7) To return to normal mode, press the
CHECK
ON/OFF button.
81
button for 3 seconds to return to maintenance mode.
13-2. REQUEST CODE LIST
Request code
* Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed.
Description
Request content
(Display range)
Unit
0
Operation state
Refer to 13-2-1. Detail Contents in Request Code.
–
1
Compressor-Operating current (rms)
0 – 50
A
2
Compressor-Accumulated operating time
0 – 9999
10 hours
3
Compressor-Number of operation times
0 – 9999
100 times
4
Discharge temperature (TH4)
37 ~ 327
°F
5
Outdoor unit - Liquid pipe 1 temperature (TH3)
-40 ~ 194
°F
6
Outdoor unit - Liquid pipe 2 temperature
-40 ~ 194
°F
7
Outdoor unit-2-phase pipe temperature (TH6)
-38 ~ 190
°F
8
Outdoor suction pipe temperature (TH32)
-38 ~ 190
°F
9
Outdoor unit-Ambient air temperature (TH7)
-38 ~ 190
°F
10
Outdoor unit-Heatsink temperature (TH8)
-40 ~ 327
°F
12
Discharge superheat (SHd)
0 – 327
°F
13
Sub-cool (SC)
0 – 234
°F
16
Compressor-Operating frequency
0 – 255
Hz
17
Compressor-Target operating frequency
0 – 255
Hz
18
Outdoor unit-Fan output step
0 – 10
Step
0 – 9999
rpm
0 – 9999
rpm
Remarks
11
14
15
19
20
Outdoor unit-Fan 1 speed
(Only for air conditioners with DC fan motor)
Outdoor unit-Fan 2 speed
(Only for air conditioners with DC fan motor)
"0" is displayed if the air conditioner is a single-fan
type.
21
22
LEV (A) opening
0 – 500
Pulses
23
LEV (B) opening
0 – 500
Pulses
24
LEV (C) opening
0 – 500
Pulses
25
Primary current
0 – 50
A
26
DC bus voltage
180 – 370
V
29
Number of connected indoor units
0–4
30
Indoor unit-Setting temperature
62 ~ 86
31
Indoor unit-Intake air temperature <Measured by thermostat> 46 ~ 102
27
28
32
33
34
35
Indoor unit-Intake air temperature (Unit No. 1)
Units
°F
°F
46 ~ 102
°F
<Heat mode-4-deg correction>
Indoor unit-Intake air temperature (Unit No. 2)
46 ~ 102
°F
<Heat mode-4-deg correction>
Indoor unit-Intake air temperature (Unit No. 3)
46 ~ 102
°F
<Heat mode-4-deg correction>
Indoor unit-Intake air temperature (Unit No. 4)
"0" is displayed if the target unit is not present.
46 ~ 102
°F
<Heat mode-4-deg correction>
36
37
Indoor unit - Liquid pipe temperature (Unit No. 1)
-38 ~ 190
°F
38
Indoor unit - Liquid pipe temperature (Unit No. 2)
-38 ~ 190
°F
39
Indoor unit - Liquid pipe temperature (Unit No. 3)
-38 ~ 190
°F
40
Indoor unit - Liquid pipe temperature (Unit No. 4)
-38 ~ 190
°F
42
Indoor unit-Cond./Eva. pipe temperature (Unit No. 1)
-38 ~ 190
°F
43
Indoor unit-Cond./Eva. pipe temperature (Unit No. 2)
-38 ~ 190
°F
44
Indoor unit-Cond./Eva. pipe temperature (Unit No. 3)
-38 ~ 190
°F
45
Indoor unit-Cond./Eva. pipe temperature (Unit No. 4)
-38 ~ 190
°F
48
Thermostat ON operating time
0 – 999
Minutes
49
Test run elapsed time
0 – 120
Minutes
"0" is displayed if the target unit is not present.
41
"0" is displayed if the target unit is not present.
46
47
82
Not possible to activate maintenance mode during the test run.
Request code
Description
Request content
(Display range)
Unit
50
Indoor unit-Control state
Refer to 13-2-1.Detail Contents in Request Code.
–
51
Outdoor unit-Control state
Refer to 13-2-1.Detail Contents in Request Code.
–
52
Compressor-Frequency control state
Refer to 13-2-1.Detail Contents in Request Code.
–
53
Outdoor unit-Fan control state
Refer to 13-2-1.Detail Contents in Request Code.
–
54
Actuator output state
Refer to 13-2-1.Detail Contents in Request Code.
–
55
Error content (U9)
Refer to 13-2-1.Detail Contents in Request Code.
–
56
57
58
59
60
Signal transmission demand capacity
0 – 255
%
61
Contact demand capacity
Refer to 13-2-1.Detail Contents in Request Code.
–
62
External input state (silent mode, etc.)
Refer to 13-2-1.Detail Contents in Request Code.
–
63
64
65
66
67
68
69
70
Outdoor unit-Capacity setting display
Refer to 13-2-1.Detail Contents in Request Code.
–
71
Outdoor unit-Setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
72
73
Outdoor unit-SW1 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
74
Outdoor unit-SW2 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
75
76
Outdoor unit-SW4 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
77
Outdoor unit-SW5 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
78
Outdoor unit-SW6 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
79
Outdoor unit-SW7 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
80
Outdoor unit-SW8 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
81
Outdoor unit-SW9 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
82
Outdoor unit-SW10 setting information
Refer to 13-2-1.Detail Contents in Request Code.
–
M-NET adapter connection (presence/absence)
"0000": Not connected
"0001": Connected
–
89
Display of execution of replace/wash operation
"0000": Not washed
"0001": Washed
–
90
Outdoor unit-Microcomputer version information
Examples) Ver 5.01 → "0501"
Ver
83
84
85
86
87
88
Auxiliary information (displayed after
91
Outdoor unit-Microcomputer version information (sub No.) version information)
–
Examples) Ver 5.01 A000 → "A000"
92
93
94
95
96
97
98
99
100 Outdoor unit - Error postponement history 1 (latest)
101 Outdoor unit - Error postponement history 2 (previous)
102 Outdoor unit - Error postponement history 3 (last but one)
Displays postponement code. (" - - " is
displayed if no postponement code is present)
Displays postponement code. (" - - " is
displayed if no postponement code is present)
Displays postponement code. (" - - " is
displayed if no postponement code is present)
83
Code
Code
Code
Remarks
Request code
Description
Request content
(Display range)
Unit
103 Error history 1 (latest)
Displays error history. (" - - " is displayed if no history is present.)
Code
104 Error history 2 (second to last)
Displays error history. (" - - " is displayed if no history is present.)
Code
105 Error history 3 (third to last)
Displays error history. (" - - " is displayed if no history is present.)
Code
Remarks
3 : TH3
106
Abnormal thermistor display
(TH3/TH6/TH7/TH8)
6 : TH6
7 : TH7
Sensor
8 : TH8
number
0 : No thermistor error
107 Operation mode at time of error
Displayed in the same way as request code "0".
–
108 Compressor-Operating current at time of error
0 – 50
A
109 Compressor-Accumulated operating time at time of error 0 – 9999
10 hours
110 Compressor-Number of operation times at time of error 0 – 9999
100 times
111 Discharge temperature at time of error
37 ~ 327
˚F
112 Outdoor unit - Liquid pipe 1 temperature (TH3) at time of error
-40 ~ 194
˚F
113 Outdoor unit - Liquid pipe 2 temperature at time of error -40 ~ 194
˚F
-38 ~ 190
˚F
116 Outdoor unit-Outside air temperature (TH7) at time of error -38 ~ 190
˚F
117 Outdoor unit-Heat sink temperature (TH8) at time of error -40 ~ 327
˚F
114 Outdoor unit-2-phase pipe temperature (TH6) at time of error
115
˚F
118 Discharge super heat (SHd) at time of error
0 – 327
119 Sub-cool (SC) at time of error
0 – 234
˚F
120 Compressor-Operating frequency at time of error
0 – 255
Hz
0 – 10
Step
121
Outdoor unit at time of error
· Fan output step
Outdoor unit at time of error
0 – 9999
rpm
0 – 9999
rpm
125 LEV (A) opening at time of error
0 – 500
Pulses
126 LEV (B) opening at time of error
0 – 500
Pulses
0 – 999
Minutes
122
123
· Fan 1 speed (Only for air conditioners with DC fan)
Outdoor unit at time of error
· Fan 2 speed (Only for air conditioners with DC fan)
"0" is displayed if the air conditioner is a singlefan type.
124
127
128
129
130 Thermostat ON time until operation stops due to error
131
Indoor - Liquid pipe temperature at time of error
-38 ~ 190
˚F
-38 ~ 190
˚F
-38 ~ 190
˚F
150 Indoor-Actual intake air temperature
-38 ~ 190
˚F
151 Indoor - Liquid pipe temperature
-38 ~ 190
˚F
152 Indoor-2-phase pipe temperature
-38 ~ 190
˚F
132
133
134
Indoor-2-phase pipe temperature at time of error
Indoor at time of error
· Intake air temperature <Thermostat judge temperature>
135
136
137
138
139
140
~
146
147
148
149
84
Average value of all indoor units is displayed if the air conditioner consists of two or more indoor units (twin, triple, quad).
Average value of all indoor units is displayed if the air conditioner consists of two or more indoor units (twin, triple, quad).
Request code
Description
Request content
(Display range)
Unit
Remarks
153
154
155
Indoor-Fan operating time
(After filter is reset)
Indoor-Total operating time
(Fan motor ON time)
0 – 9999
1 hour
0 – 9999
10 hours
156
157 Indoor fan output value (Sj value)
0 – 255
Fan control data
–
For indoor fan phase control
"00 **" "**" indicates fan control data.
–
For indoor fan pulsation control
"00 **" "**" indicates fan control data.
–
For indoor DC brushless motor control
162 Indoor unit-Model setting information
Refer to 13-2-1 Detail Contents in Request Code.
–
163 Indoor unit-Capacity setting information
Refer to 13-2-1 Detail Contents in Request Code.
–
164 Indoor unit-SW3 information
Undefined
–
165 Wireless pair No. (indoor control board side) setting
Refer to 13-2-1 Detail Contents in Request Code.
–
166 Indoor unit-SW5 information
Undefined
–
Examples) Ver 5.01 → "0501"
Ver
158
Indoor fan output value
(Pulsation ON/OFF)
159 Indoor fan output value (duty value)
160
161
167
~
189
190 Indoor unit-Microcomputer version information
191 Indoor unit-Microcomputer version information (sub No.) Auxiliary information (displayed after version information)
Examples) Ver 5.01 A000 → "A000"
–
192
~
764
765 Stable operation (Heat mode)
This request code is not provided to collect data. It is used to fix the operation state.
766 Stable operation (Cool mode)
This request code is not provided to collect data. It is used to fix the operation state.
767 Stable operation cancellation
This request code is not provided to collect data. It is used to cancel the operation state that has been
fixed by request codes "765" and "766".
85
13-2-1. Detail Contents in Request Code
Example) Request code "004"
Discharge temperature 156°F
Refrigerant address "00"
[Operation state] (Request code ":0")
Relay output state
Data display
Display
C
4
0
1
2
3
4
5
6
7
8
A
Relay output state
Operation mode
Operation mode
Display
0
C
H
d
A: Mode display
B: Refrigerant address
C: Data display area
D: Request code display area
Operation mode
STOP • FAN
COOL • DRY
HEAT
DEFROST
Power currently
supplied to compressor
–
Compressor
Four-way valve
Solenoid valve
–
–
–
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
[Indoor unit – Control state] (Request code :" 50 ")
Display
0
1
2
3
4
5
6
7
F
Data display
Unit No. 4 state
Unit No. 3 state
Unit No. 2 state
Unit No. 1 state
State
Normal
Preparing for heat operation.
–
–
Heater is ON.
Anti-freeze protection is ON.
Overheat protection is ON.
Requesting compressor to turn OFF.
There are no corresponding units.
[Outdoor unit – Control state] (Request code ":51")
0
0
0
Data display
0
0
0
0
0
1
0
0
2
State
Normal
Preparing for heat operation.
Defrost
[Compressor – Frequency control state] (Request code ":52")
Frequency control state Data display
0
Display
0
Frequency control state Frequency control state Frequency control state Display
0
1
2
Current limit control
No current limit
Primary current limit control is ON.
Secondary current limit control is ON.
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
Discharge temperature Condensation temperature
Anti-freeze
Heatsink temperature
overheat prevention
overheat prevention
protection control overheat prevention
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
86
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
[Fan control state] (Request code :" 53 ")
Data display
0
0
Fan step correction value by heatsink temperature overheat prevention control
Fan step correction value by cool condensation temperature overheat prevention control
Display
- (minus)
0
1
2
Correction value
–1
0
+1
+2
[Actuator output state] (Request code :"54")
Data display
0
0
Actuator output state Actuator output state Actuator output state Display
SV1
0
1
ON
2
3
ON
4
5
ON
6
7
ON
8
9
ON
A
b
ON
C
d
E
F
Actuator output state Four-way valve
Compressor
Compressor is
warming up
ON
ON
ON
ON
ON
ON
ON
52C
0
1
ON
2
3
4
5
6
7
ON
ON
ON
ON
ON
SV2
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
[Error content (U9)] (Request code :"55 ")
Data display
0
0
Error content Error content Error content Display
Overvoltage
error
: Detected
Undervoltage
error
L1-phase
open error
Power synchronizing
signal error
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
87
Error content Converter Fo
Display
error
0
1
2
3
SS
ON
ON
ON
ON
ON
ON
ON
ON
ON
Display
: Detected
PAM error
ON
ON
ON
ON
[Contact demand capacity] (Request code "61")
Data display
0
0
Setting content
0
Setting content
Display
Setting value
0
1
2
3
0%
50%
75%
100%
Setting
SW7-1
SW7-2
ON
ON
ON
ON
Silent mode
input
Spare 1
input
[External input state] (Request code "62")
Data display
0
0
Input state
0
Input state
Display
Contact demand
input
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
[Outdoor unit -–Capacity setting display] (Request code : "70")
Data display
9
10
11
14
20
25
Capacity
12
18
24
30
36
42
[Outdoor unit – Setting information] (Request code "71")
Data display
0
0
Setting information Setting information Setting information Display
Defrost mode
0
Standard
1
For high humidity
Setting information Single-/
Display
three-phase
0
Single-phase
1
2
Three-phase
3
88
Heat pump/
cooling only
Heat pump
Cooling only
Heat pump
Cooling only
: Input present
Spare 2
input
[Outdoor unit switch setting display (SW1 to SW10, except SW3)] Request codes: 73 to 82
0: Switch OFF
1: Switch ON
SW1, SW2, SW6, SW7
Data display
1
2
3
4
5
6
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
01
02
03
04
05
06
07
08
09
0A
0b
0C
0d
0E
0F
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
0: Switch OFF
1: Switch ON
SW5
Data display
1
2
3
4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0: Switch OFF
SW8
1
2
3
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
01
02
03
04
05
06
07
08
09
0A
0b
0C
0d
0E
0F
1: Switch ON
Data display
0
0
0
0
1
1
1
1
00
00
00
00
00
00
00
00
00
01
02
03
04
05
06
07
0: Switch OFF
1: Switch ON
SW4, SW9, SW10
Data display
1
2
0
1
0
1
0
0
1
1
89
00
00
00
00
00
01
02
03
[Indoor unit – Model setting information] (Request code : 162)
Data display
0
Display
0
See the table on the right.
Model setting state
00
01
02
03
04
05
06
07
08
09
0A
0b
0C
0d
0E
0F
10
11
12
13
14
15
16
17
18
19
1A
1b
1C
1d
1E
1F
Display
20
21
22
23
24
25
26
27
28
29
2A
2b
2C
2d
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3b
3C
3d
3E
3F
Model setting state
PKA-A·GA(L)
PKA-A·FA(L)
PCA-A·GA, PLA-A·BA
PLA-A·AA
[Indoor unit – Capacity setting information] (Request code 163 )
Data display
0
Display
0
See the table on the right.
Capacity setting state
00
01
02
03
04
05
06
07
08
09
0A
0b
0C
0d
0E
0F
12
18
24
30
36
[Wireless pair No. (indoor control board side) setting] (Request code 165 )
Data display
0
Display
0
See the table on the right.
00
01
02
03
Pair No. setting state
No.
No.
No.
No.
90
0
1
2
3
J41 disconnected
J42 disconnected
J41, J42 disconnected
Display
Capacity setting state
10
11
12
13
14
15
16
17
18
19
1A
1b
1C
1d
1E
1F
42
14
DISASSEMBLY PROCEDURE
PUZ-HA30NHA
PUZ-HA36NHA
PHOTOS & ILLUSTRATION
OPERATING PROCEDURE
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5 × 10) and slide
the hook on the right downward to remove the service
panel.
(2) Remove screws (3 for front, 3 for rear/5 × 10) of the top
panel and remove it.
Figure 1
Top panel fixing screws
Fan
grille
fixing
screws
Slide
Top panel
Service panel
Fan grille
Grille
fixing
screws
Service panel
fixing screws
2. Removing the fan motor (MF1, MF2)
Photo 1 Front panel Photo 2
Fan
(1) Remove the service panel. (See Figure 1.)
Propeller
Fan motor fixing screws motor
(2) Remove the top panel. (See Figure 1.)
(3) Remove 5 fan grille fixing screws (5 × 10) to detach the
fan grille. (See Figure 1.)
(4) Remove a nut (for right handed screw of M6) to detach the
propeller. (See Photo 1.)
(5) Disconnect the connectors, CNF1, CNF2 on controller circuit board in electrical parts box.
Nut
(6) Remove 4 fan motor fixing screws (5 × 25) to detach the
fan motor. (See Photo 2.)
Fan motor fixing screws
3. Removing the electrical parts box
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Disconnect the indoor/outdoor connecting wire and power
supply wire from terminal block.
(4) Remove all the following connectors from controller circuit board,
fan motor, linear expansion valve, thermistor <Outdoor
pipe>, thermistor <Discharge>, thermistor <Outdoor 2-phase
pipe>, thermistor <Outdoor>, high pressure switch, low
pressure switch, solenoid valve coil <Four-way valve> and
solenoid valve coil <Bypass valve>. Then remove a screw
(4 × 8) from the valve bed to remove the lead wire.
Pull out the disconnected wire from the electrical parts box.
<Diagram symbol in the connector housing>
• Fan motor (CNF1, CNF2)
• Linear expansion valve (LEV-A, LEV-B and LEV-C)
• Thermistor <Outdoor pipe> (TH3) (TH32) (TH33)
• Thermistor <Discharge> (TH4)
• Thermistor <Outdoor 2-phase pipe, Outdoor> (TH7/6)
• High pressure switch (63H)
• Low pressure switch (63L)
• 4-way valve coil (21S4)
• Bypass valve coil (SV2)
(5) Remove the terminal cover and disconnect the compressor
lead wire.
(6) Remove an electrical parts box fixing screw (4 × 10) and
detach the electrical parts box by pulling it upward. The
electrical parts box is fixed with 2 hooks on the left and 1
hook on the right.
91
Photo 3
Controller circuit board(C.B.)
Electrical
parts box
Electrical
parts box
fixing screw
Terminal block
(TB1)
Valve bed
Screw
Terminal cover
Compressor
(MC)
OPERATING PROCEDURE
PHOTOS
4. Removing the thermistor <Outdoor 2-phase pipe> (TH6)
and thermistor <Outdoor>(TH7)
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Disconnect the connectors TH7/6 (red) on the controller
circuit board in the electrical parts box.
(4) Loosen the clamp for the lead wire in the rear of the electrical parts box.
(5) Pull out the thermistor <Outdoor 2-phase pipe> (TH6) and
thermistor <Outdoor> (TH7) from the sensor holder.
Note: In case of replacing thermistor <Outdoor 2-phase
pipe> (TH6) or thermistor <Outdoor> (TH7), replace
it together.
Photo 4
Heat
exchanger
Thermistor
<Outdoor
2-phase pipe>
(TH6)
Photo 5
Clamp
Lead wire of
thermistor
<Outdoor>
(TH7)
Electrical parts
box
Sensor holder
5. Removing the thermistor <Discharge> (TH4)
(1) Remove the service panel. (See Figure 1.)
(2) Disconnect the connector TH4 (white) on the controller circuit board in the electrical parts box.
(3) Loosen clamps for the lead wire in the rear of the electrical
parts box (See Photo 4.) and separator (See Photo 6.).
(4) Pull out the thermistor <Discharge> (TH4) from the sensor
holder.
Photo 6
Separator
Muffler
Clamp
Thermistor
<Discharge>
Compressor
(MC)
6. Removing the thermistor <Outdoor pipe> (TH3) (TH32) (TH33)
(1) Remove the service panel. (See Figure 1.)
(2) Disconnect the connectors, TH3 (white) and TH32 (black),
TH33 (yellow) on the controller circuit board in the electrical parts box.
(3) Loosen clamps for the lead wire in the rear of the electrical
parts box (See Photo 4.) and separator (See Photo 6.).
(4) Loosen clamp for the lead wire for TH3.
(5) Pull out the thermistor <Outdoor pipe> (TH3), (TH32), (TH33)
from the sensor holder.
(TH33 : See Photo 10.)
Photo 7
Thermistor <Outdoor pipe> (TH3)
Photo 8
Low pressure
switch(63L)
Thermistor
<Outdoor pipe>
(TH32)
Clamp
(for TH3)
92
Power
receiver
PHOTOS
OPERATING PROCEDURE
7. Removing the 4-way valve coil (21S4), and linear expansion
valve coil (LEV-A, LEV-B, LEV-C)
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
[Removing the 4-way valve coil]
(3) Remove 4-way valve coil fixing screw (M4 × 6).
(4) Remove the 4-way valve coil by sliding the coil toward you.
(5) Disconnect the connector 21S4 (green) on the controller circuit board in the electrical parts box.
[Removing the linear expansion valve coil]
(6) Remove the linear expansion valve coil by sliding the coil
upward.
(7) Disconnect the connectors, LEV-A (white), LEV-B (red) and
LEV-C (blue) on the controller circuit board in the electrical
parts box.
8. Removing the 4-way valve
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve
and stop valve fixing screws (5 × 16) then remove the valve
bed.
(4) Remove 4 right side panel fixing screws (5 × 10) in the rear
of the unit then remove the right side panel.
(5) Remove the 4-way valve coil.
(6) Recover refrigerant.
(7) Remove the welded part of 4-way valve.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by removing the right side panel.
Note 3: When installing the 4-way valve, cover it with a wet
cloth to prevent it from heating (120°C [250°F] or
more) , then braze the pipes so that the inside of
pipes are not oxidized.
9. Removing linear expansion valve
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve
and stop valve fixing screws (5 × 16) then remove the valve
bed.
(4) Remove 4 right side panel fixing screws (5 × 10) in the rear
of the unit then remove the right side panel.
(5) Remove the linear expansion valve coil.
(6) Recover refrigerant.
(7) Remove the welded part of linear expansion valve.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by removing the right side panel.
Note 3: When installing the linear expansion valve, cover it
with a wet cloth to prevent it from heating
(120°C [250°F] or more) , then braze the pipes so
that the inside of pipes are not oxidized.
10. Removing the high pressure switch (63H) and the low
pressure switch (63L)
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Remove 3 right side panel fixing screws (5 × 10) in the
rear of the unit and remove the right side panel.
(4) Pull out the lead wire of high pressure switch and low
pressure switch.
(5) Recover refrigerant.
(6) Remove the welded part of high pressure switch and low
pressure switch.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by removing the right side panel.
Note 3: When installing the high pressure switch, cover it
with a wet cloth to prevent it from heating
(100°C [210°F] or more) , then braze the pipes so
that the inside of pipes are not oxidized.
93
Photo 9
High pressure
switch (63H)
Linear
expansion
valve coil
(LEV-C)
4-way valve coil
(21S4)
4-way valve coil
fixing screw
Linear
expansion
valve
Linear
expansion
valve coil
(LEV-B)
4-way valve
Linear expansion
valve coil (LEV-A)
Low pressure
switch (63L)
Linear
expansion
valve
OPERATING PROCEDURE
PHOTOS
11. Removing bypass valve coil (SV) and bypass valve
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Remove 3 right side panel fixing screws (5 × 10) in the
rear of the unit and remove the right side panel.
(4) Remove the bypass valve solenoid coil fixing screw (M5
× 6).
(5) Remove the bypass valve coil by sliding the coil upward.
(6) Disconnect the connector SV2 (blue) on the controller circuit board in the electrical parts box.
(7) Recover refrigerant.
(8) Remove the welded part of bypass valve.
Photo 10
Replace filter
Bypass valve
coil fixing screw
Thermistor
<Outdoor pipe>
(TH33)
Note 1: Recover refrigerant without spreading it in the
air.
Note 2: The welded part can be removed easily by
removing the right side panel.
Bypass valve coil (SV)
12. Removing the reactor (DCL) and capacitor (CE)
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Remove the electrical parts box. (See Photo 3.)
<Removing the reactor>
(4) Remove 4 reactor fixing screws (4 × 10) and remove the
reactor.
<Removing the capacitor>
(4) Remove 2 capacitor band fixing screws (4 × 10) and
remove the capacitor.
w The reactor and capacitor are attached to the rear of the
electrical parts box.
Bypass valve
Photo 11
Reactor
(DCL)
Reactor
fixing
screws
Reactor
fixing
screws
Capacitor (CE)
94
Electrical parts box
Capacitor band
fixing screws
OPERATING PROCEDURE
PHOTOS
13. Removing the compressor (MC)
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Remove 2 front cover panel fixing screws (5 × 10) and
remove the front cover panel. (See Photo 3.)
(4) Remove 2 back cover panel fixing screws (5 × 10) and
remove the back cover panel.
(5) Remove the electrical parts box. (See Photo 3.)
(6) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve
and stop valve fixing screws (5 × 16) then remove the valve
bed.
(7) Remove 3 right side panel fixing screws (5 × 10) in the
rear of the unit then remove the right side panel.
(8) Remove 3 separator fixing screws (4 × 10) and remove
the separator.
(9) Remove the soundproof cover for compressor.
(10) Remove the terminal cover and remove the compressor
lead wire.
(11) Recover refrigerant.
(12) Remove the 3 points of the compressor fixing nut using
a spanner or a adjustable wrench.
(13) Remove the welded pipe of compressor inlet and outlet
then remove the compressor.
Photo 12
Separator
Valve bed
Compressor fixing nut
Compressor (MC)
Power receiver
Note: Recover refrigerant without spreading it in the air.
14. Removing the power receiver
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Remove 2 front cover panel fixing screws (5 × 10) and
remove the front cover panel. (See Photo 3.)
(4) Remove 2 back cover panel fixing screws (5 × 10) and
remove the back cover panel.
(5) Remove the electrical parts box. (See Photo 3.)
(6) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve
and stop valve fixing screws (5 × 16) then remove the
valve bed.
(7) Remove 3 right side panel fixing screws (5 × 10) in the
rear of the unit then remove the right side panel.
(8) Recover refrigerant.
(9) Remove 4 welded pipes of power receiver inlet and outlet.
(10) Remove 2 receiver leg fixing screws (4 × 10).
Photo 13
Pipes of power receiver
Note: Recover refrigerant without spreading it in the air.
Compressor
(MC)
95
Receiver leg
fixing screws
Power receiver
Receiver leg
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
CCopyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Oct. 2008 No.OCH426 REVISED EDITION-A PDF 7
Distributed in Oct. 2007 No.OCH426 PDF 9
Made in Japan
New publication, effective Oct. 2008
Specifications subject to change without notice
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