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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
August 2007
No. OC316
REVISED EDITION-D
HFC
utilized
TECHNICAL & SERVICE MANUAL
[Model name]
<Outdoor unit>
MXZ-8A140VA
[Service Ref.]
MXZ-8A140VA
MXZ-8A140VA1
MXZ-8A140VA2
MXZ-8A140VA3
<Branch box>
PAC-AK50BC
PAC-AK30BC
PAC-AK50BC
PAC-AK30BC
(Indispensable optional parts
for MXZ-8A140VA)
R410A
Revision:
· MXZ-8A140VA3 is added in
REVISED EDITION-D.
· Some descriptions have
been modified.
· Please void OC316
REVISED EDITION-C.
NOTE:
·This service manual
describes technical data of
outdoor unit and branch box.
As for indoor units, refer to
its service manual.
• RoHS compliant products
have <G> mark on the
spec name plate.
• For servicing RoHS compliant products, refer to the
RoHS PARTS LIST.
CONTENTS
Model name
indication
OUTDOOR UNIT
BRANCH BOX
1. TECHNICAL CHANGES ···································2
2. SAFETY PRECAUTION····································3
3. OVERVIEW OF UNITS······································6
4. SPECIFICATIONS ···········································14
5. DATA ·······························································16
6. OUTLINES AND DIMENSIONS ······················31
7. WIRING DIAGRAM ·········································34
8. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION ···38
9. TROUBLESHOOTING ····································40
10. ELECTRICAL WIRING····································88
11. WIRING SPECIFICATIONS·····························89
12. SYSTEM CONTROL ·······································90
13. REFRIGERANT PIPING TASK ·······················92
14. DISASSEMBLY PROCEDURE ·······················95
15. PARTS LIST ··················································102
16. RoHS PARTS LIST ·······································109
17. OPTIONAL PARTS ··························Back cover
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TECHNICAL CHANGES
MXZ-8A140VA2 ➔ MXZ-8A140VA3
The parts below have been changed.
• THERMISTOR (DISCHARGE/TH4) (Connector change)
• CONTROLLER CIRCUIT BOARD(C.B)
• NOISE FILTER CIRCUIT BOARD(N.F.)
• ACTIVE FILTER MODULE(ACTM)
• RELAY(52C), RESITOR(RS)(including N.F.)
MXZ-8A140VA1 ➔ MXZ-8A140VA2
The parts below have been changed.
• FOUR-WAY VALVE AND COIL(21S4)
• CONTROLLER CIRCUIT BOARD(C.B.)
• FAN MOTOR(MF1, MF2)
• SOLENOID VALVE AND COIL(SV2)
MXZ-8A140VA ➔ MXZ-8A140VA1
The parts below have been changed.
• POWER CIRCUIT BOARD(P.B.)
• NOISE FILTER CIRCUIT BOARD(N.F.)
• THERMISTOR (OUTDOOR / TH7)
(Length change)
2
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SAFETY PRECAUTION
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply
circuit 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.
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.
Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.
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.)
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.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Tools for R410A
Flare tool
Size adjustment gauge
Vacuum pump adaptor
Electronic refrigerant
charging scale
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 large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.
Charge refrigerant from liquid phase of gas
cylinder.
Do not use a charging cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
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.
3
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[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
(1) 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. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
2
Charge hose
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
·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
·Only for R410A
·Top of cylinder (Pink)
·Cylinder with syphon
4
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(2) 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 or below.)
Diagram below: Piping diameter and thickness
Nominal
Thickness (mm)
Outside
dimensions(inch) diameter (mm)
R410A
R22
1/4
6.35
0.8
0.8
3/8
9.52
0.8
0.8
1/2
12.70
0.8
0.8
5/8
15.88
1.0
1.0
—
3/4
19.05
1.0
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 of its working pressure higher than that of other refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also
have 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”, the dimension B changes.
Use torque wrench corresponding to each dimension.
Dimension A
Dimension B
Flare cutting dimensions
Nominal
Outside
dimensions(inch)
diameter
1/4
6.35
3/8
9.52
1/2
12.70
5/8
15.88
3/4
19.05
(mm)
Flare nut dimensions
Nominal
dimensions(inch)
1/4
3/8
1/2
5/8
3/4
Dimension A ( +0
-0.4 )
R410A
R22
9.1
9.0
13.2
13.0
16.6
16.2
19.7
19.4
—
23.3
Outside
diameter
6.35
9.52
12.70
15.88
19.05
(mm)
Dimension B
R410A
R22
17.0
17.0
22.0
22.0
26.0
24.0
29.0
27.0
—
36.0
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
R410A tools
Can R22 tools be used? Can R407C 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
Ester oil:
Alkylbenzene oil: minimum amount
oil (minimum amount)
Prevent compressor malfunction Tool exclusive for R410A
Safety charger
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out Tool exclusive for R410A
Charge valve
when detaching charge hose
Vacuum drying and air
Vacuum pump
Tools for other refrigerants can
(Usable if equipped
(Usable if equipped
with adopter for reverwith adopter for reverpurge
be used if equipped with adopse flow)
se flow)
ter for reverse flow check
Flaring work of piping
Tools for other refrigerants
Flare tool
(Usable by adjusting
(Usable by adjusting
can be used by adjusting
flaring dimension)
flaring dimension)
flaring dimension
Bend the pipes
Tools for other refrigerants can be used
Bender
Tools for other refrigerants can be used
Cut the pipes
Pipe cutter
Tools for other refrigerants can be used
Welder and nitrogen gas cylinder Weld the pipes
Tools for other refrigerants can be used
Refrigerant charging scale Refrigerant charge
Vacuum gauge or thermis- Check the degree of vacuum. (Vacuum Tools for other refrigerants
valve prevents back flow of oil and refri- can be used
tor vacuum gauge and
gerant to thermistor vacuum gauge)
vacuum valve
Refrigerant charge
Charging cylinder
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.
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
Refrigerant recovery
Refrigerant charge
Apply to flared section
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OVERVIEW OF UNITS
3-1. CONSTRUCTION OF SYSTEM
MXZ-8A140VA/ MXZ-8A140VA1/ MXZ-8A140VA2/ MXZ-8A140VA3
Rated capacity (kW)
14.0/16.0
(Cooling/Heating)
Outdoor unit
5HP
R410A
Type 22 ~ Type 80
Indoor unit Capacity
that can be
connected
Number of units
Total system wide capacity
CAUTION : The indoor unit which rated capability exceeds
8.0kW (80 type) can NOT be connected.
2 ~ 8 units
31 ~ 132 % of outdoor unit capacity (4.4 kW ~ 18.5 kW)
Branch box
that can be Number of units
connected
1 ~ 2 units
Connectable indoor unit lineup (Heat pump inverter type)
Model type
Capacity class
Model name
2.2kW 2.5kW 3.5kW 5.0kW 6.0kW 7.1kW 8.0kW
deluxe
Wall
mounted
standard
Low static pressure
Low static pressure
Ceiling
concealed High static pressure
High static pressure
High static pressure
2 by 2 type
4-way
ceiling cassette standard
Floor standing
MSZ-FA25/35, FD25/35
MSZ-GA22/25/35/50/60/71/80, GB50, GC22/25/35
MSXZ-DB25/35
SEZ-KC25, KA35/50/60/71, KD25/35/50/60/71
MEXZ-GA25/35/50/60
PEAD-RP50/60/71EA.UK
PEAD-RP60/71GA.UK
PEA-RP71EA
SLZ-KA25/35/50
PLA-RP35/50/60/71BA(.UK)
MFZ-KA25/35/50
<NOTE> The lineup of a connectable indoor unit depends on a district/areas/country.
Branch box
Number of branches
Indoor unit that
can be connected
(
)
PAC-AK50BC
PAC-AK30BC
5 branches
(MAX. 5 units)
3 branches
(MAX. 3 units)
w Max. 2 branch boxes can be connected to 1 outdoor unit.
2- branch pipe (joint) : Optional parts
In case of using 1- branch box
In case of using 2- branch boxes
Option
No need
Model name
Connection method
MSDD-50AR-E
flare
MSDD-50BR-E
brazing
w According to the connection method, you can choose the favorite one.
Optional accessories of indoor units and outdoor units are available.
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3-2. SYSTEM OUTLINE
The additional connection of the Branch Box together with employment of the compact trunk-looking outdoor unit can successfully realizes a long distance piping for big houses. Equipped with a microcomputer, the Branch Box can translate the
transmission signal of indoor units to achieve the optimum control.
3-2-1. System example
Indoor unit (Ceiling concealed type)
Indoor unit
(Wall mounted type)
Branch Box
Outdoor unit
3-2-2. Method for identifying
■ Outdoor unit
Number of connectable indoor units (MAX.)
Model type
M X Z - 8 A 140 V A
Control and refrigerant
A : New A control and R410A
Power supply
V: Single phase 220/230/240V
220V
Multi type heat pump
inverter outdoor unit
Indicates equivalent to rated cooling capacity.
(O0.1kW)
■ Branch box
Applicable refrigerant
A : R410A
Symbol of factory
PAC - A K 50 BC
Branch box (Controller)
(Indispensable)
Optional parts
50Hz
60Hz
Number of branches
50 : 5 branches
30 : 3 branches
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3-3. TYPICAL COMBINATION EXAMPLE
Branch box is located INSIDE of condominium
Branch box
(Inside)
Installing branch box indoors
Only 1 piping is required between the outdoor and
indoor offering a fine external view.
■ System example of 5 indoor units
Branch box (5 branch type)
Master
bedroom
Living
Outdoor unit
SEZ-60
Dining
MSZ-35
Bedroom (1)
MSZ-35
Bedroom (2)
MSZ-25
MSZ-25
■ Verification
The rated capacity should be determined by observing the table below. The unit’s quantities are limited in 2 to 8 units.
For the next step, make sure that the selected total rated capacity is in a range of 4.4 ~ 18.5kW.
The total indoor unit capacity should be within the outdoor units. (=14.0kW is preferred).
Combination of excessive indoor units and an outdoor unit may reduce the capacity of each indoor unit.
The rated indoor capacity is as the table below.
Example:
SEZ-60
MSZ-35
MSZ-35
MSZ-25
MSZ-25
= 6.0
+
= 3.5
+
= 3.5
+
= 2.5
+
= 2.5
Total rated capacity
18.0
18.5kW
Indoor unit type (capacity class)
22
25
35
50
60
71
80
Rated capacity (cooling) (kW)
2.2
2.5
3.5
5.0
6.0
7.1
8.0
8
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3-4. INSTALLATION
3-4-1. Outdoor unit installation location
For best performance, select proper position.
● Avoid places where combustible gas may be generated or leak.
● Avoid direct sunlight or other sources of heat.
● Install sunshade to protect the outdoor unit if direct sunlight hits the unit.
● Install the outdoor unit with enough distance between neighbours as operation noise may disturb the neighbours.
● Avoid the position that the unit is covered by snow or snow blows directly against the air outlet. The snow block or blow
will reduce the airflow of the outdoor unit.
In the areas of heavy snow, special countermeasures must be taken at installation to protect the outdoor unit from
malfunction caused by snow.
● Select a location permitting easy wiring and pipe access to the power source and indoor unit.
● Drain water must be drained freely during operation. Check for draining.
3-4-2. Ventilation and service space
(1)Windy location installation
When installing the outdoor unit on a rooftop or other location unprotected from the wind, situate the air outlet of the unit so
that it is not directly exposed to strong winds. Strong wind entering the air outlet may impede the normal airflow and a
malfunction may result.
The following shows 3 examples of precautions against strong winds.
● Face the air outlet towards the nearest available wall about 50 cm away from the wall. (Fig. 2-1)
● Install an optional air guide if the unit is installed in a location where strong winds from a typhoon, etc. may directly enter
the air outlet. (Fig. 2-2)
AAir guide
● Position the unit so that the air outlet blows perpendicularly to the seasonal wind direction, if possible. (Fig. 2-3)
BWind direction
Fig.2-1
A
B
Fig.2-2
9
Fig.2-3
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(2) When installing a single outdoor unit
Minimum dimensions are as follows, except for Max., meaning Maximum dimensions, indicated.
Refer to the figures for each case.
● Obstacles at rear only (Fig. 2-4)
● Obstacles at rear and above only (Fig. 2-5)
· Do not install the optional air outlet guides for upward airflow.
● Obstacles at rear and sides only (Fig. 2-6)
● Obstacles at front only (Fig. 2-7)
w When using an optional air outlet guide, the clearance is 500 mm or more.
● Obstacles at front and rear only (Fig. 2-8)
w When using an optional air outlet guide, the clearance is 500 mm or more.
● Obstacles at rear, sides, and above only (Fig. 2-9)
· Do not install the optional air outlet guides for upward airflow.
unit : mm
00
x. 5
1000
Ma
20
0
50
1
Fig.2-4
0
30
20
0
0
30
Fig.2-5
Fig.2-6
.
ax
0
50
M
1500
0
15
00
0
00
10
25
0
1
500
25
Fig.2-7
Fig.2-8
10
0
Fig.2-9
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(3) When installing multiple outdoor units
Leave 10 mm space or more between the units.
● Obstacles at rear only (Fig. 2-10)
● Obstacles at rear and above only (Fig. 2-11)
• No more than 3 units must be installed side by side. In addition, leave space as shown.
• Do not install the optional air outlet guides for upward airflow.
● Obstacles at front only (Fig. 2-12)
w When using an optional air outlet guide, the clearance is 1000 mm or more.
● Obstacles at front and rear only (Fig. 2-13)
w When using an optional air outlet guide, the clearance is 500 mm or more.
● Single parallel unit arrangement (Fig. 2-14)
w When using an optional air outlet guide installed for upward airflow, the clearance is 1000 mm or more.
● Multiple parallel unit arrangement (Fig. 2-15)
w When using an optional air outlet guide installed for upward airflow, the clearance is 1500 mm or more.
● Stacked unit arrangement (Fig. 2-16)
• The units can be stacked up to 2 units high.
• No more than 2 stacked units must be installed side by side. In addition, leave space as shown.
unit : mm
1500
x.
Ma
300
15
00
00
15
00
00
5
3
Fig.2-10
Fig.2-11
Fig.2-12
15
0
0
50
00
20
0
50
0
60
00
15
30
00
10
0
60
00
15
Fig.2-14
150
Fig.2-13
15
00
80
0
Fig.2-16
11
Fig.2-15
00
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3-4-3. Space required for Installation and servicing for Branch box.
(1) Front View (Fig. 3-1)
A Branch box
B On the side of piping
(2)Side View (Fig. 3-2, Fig. 3-3)
C For indoor installations
D Ceiling board
E Maintenance hole
F PCB side
w1:A minimum 350 mm is required for 90° bends in refrigerant piping.
A is “Min. 200 mm”.
w2:A
(Premise: The slope of drain piping is securable 1/100 or more. Required 200 mm or more, when not securable.)
In the case of less than 200 mm (for example A is 100 mm), the exchange work of Branch box from a maintenance hole
becomes difficult (Only exchange work of a PCB, linear expansion valve coils, sensors and drain pan is possible).
B is “ 600”.
w3:B
In the case of “ 450”, prepare a maintenance hole at a PCB side as it is shown in Fig. 3-3, and
“Min. 300 mm” is needed as distance A.
In the case of less than 300 mm (for example A is 100 mm), the exchange work of Branch box, linear expansion
valve coils, sensors, and drain pan from a maintenance hole becomes difficult. Only exchange work of a PCB is possible.
(3) Top View (Fig. 3-4)
G Refrigerant piping
H When facing in the opposite direction to the refrigerant piping.
NOTE1: The branch box is only for indoor use.
NOTE2: Please attach the special optional cover (PAC-AK350CVR-E) to install branch box in the outdoors.
unit : mm
A
(1)
B
450
Min. 250
Min.
50
Min. 30
Fig.3-1
C
F
198
(2)
w1
Min.
250
D
Min.
180-200
250
B w3
D
A
A
w2
280
450
E
Fig.3-2
Fig.3-3
(3)
G
Min. 250
H
Fig.3-4
12
E
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3-5. SIMPLIFIED PIPING SYSTEM
Piping connection size
A
B
Liquid
(mm)
{9.52
Gas
(mm)
{15.88
The piping connection size differs according to the type and capacity of indoor units.
Match the piping connection size of branch box with indoor unit.
If the piping connection size of branch box does not match the piping connection size of
indoor unit, use optional different-diameter (deformed) joints to the branch box side.
(Connect deformed joint directly to the branch box side.)
Flare connection employed. (No brazing!)
■ In case of using 1-branch box
Flare connection employed (No. brazing)
Branch box
A
B
B
B
B
B
■ In case of using 2-branch boxes
2 branches pipe (joint)
: optional parts
A
A
Branch box #1
A
B
B
B
B
B
Branch box #2
■ Installation procedure (2 branch pipe (joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
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Page 14
SPECIFICATIONS
• Outdoor unit : MXZ-8A140VA
MXZ-8A140VA2
MXZ-8A140VA1
MXZ-8A140VA3
kcal/h = kW o 860
Conversion formula: Btu/h = kW o 3412
CFM = m3/min o 35.31
MXZ-8A140VA/ MXZ-8A140VA1/ MXZ-8A140VA2/ MXZ-8A140VA3
Service Ref.
Rated Cooling capacity
Rated power consumption w1
Operating current
w1
Operating power factor
w1
Starting current (Outdoor unit)
Rated Heating capacity
Rated power consumption w1
Operating current
w1
Operating power factor
w1
Starting current (Outdoor unit)
kW
kW
A
%
A
kW
kW
A
%
A
Cooling
Heating
REFRIGERANT PIPING
OUTDOOR UNIT
Standard performance
14.0
3.79
17.30/16.55/15.86, 17.30
99.6
14
16.0
3.90
17.82/17.05/16.33, 17.82
99.5
14
Breaker
Please refer to "10.ELECTRICAL WIRING".
Max. current (Outdoor unit only)
A
29.5
Power supply (phase, cycle, voltage)
Single, 50Hz, 220/230/240V, Single, 60Hz, 220V
External finish
Munsell 3Y 7.8/1.1
Refrigerant control
Linear Expansion Valve (In branch box)
Compressor
Hermetic
Model
ANB33FDCMT
Motor output
kW
2.9
Starter type
Line start
Protection devices
HP switch, LP switch, Discharge thermo
Crankcase heater
W
—
Heat exchanger
Plate fin coil
Fan
Fan (drive) o No.
Propeller fan o 2
Fan motor output
kW
0.060 +0.060
Airflow
K/min (CFM)
100 (3,530)
Defrost method
Reverse cycle
Noise level
dB
Cooling
50
dB
Heating
52
Dimensions
mm (in.)
W
950 (37-3/8)
mm (in.)
D
330+30 (13+1-3/16)
mm (in.)
H
1,350 (53-1/8)
Weight
kg (lbs)
128 (282)
Refrigerant
R410A
Charge
kg (lbs)
8.5 (18.7), 40m
Oil (Model)
L
2.3 (MEL56)
Pipe size O.D.
Liquid
mm
[9.52
Gas
mm
[15.88
Indoor side
Connection method
Flared
Outdoor side
Flared
w1 In case of connecting 3 indoor units (6.0kW class), electrical data is only for outdoor unit.
Conversion formula
[6.35mm
[9.52mm
1/4 inch
3/8 inch
[12.7mm
1/2 inch
[15.88mm
5/8 inch
[19.05mm
3/4 inch
Notes1. Rating Conditions (ISO T1)
Cooling : Indoor : D.B. 27˚C (80˚F), W.B. 19˚C (66˚F) Outdoor : D.B. 35˚C (95˚F), W.B. 24˚C (75˚F)
Heating : Indoor : D.B. 20˚C (68˚F)
Outdoor : D.B. 7˚C (45˚F), W.B. 6˚C (43˚F)
Refrigerant piping length (one way) : Main Piping (From outdoor unit to branch box) : 5m
Branch Piping (From branch box to each indoor units) : each 3m
2. Guaranteed operating range
Upper limit
Lower limit
Upper limit
Heating
Lower limit
Cooling
Indoor
Outdoor
P-series
M-series, S-series
D.B. 35˚C, W.B. 22.5˚C D.B. 32˚C, W.B. 23˚C
D.B. 46˚C
D.B. 19˚C, W.B. 15˚C D.B. 21˚C, W.B. 15˚C
D.B. –5˚C
D.B. 28˚C
D.B. 27˚C
D.B. 21˚C, W.B. 15˚C
D.B. 17˚C
D.B. 20˚C
D.B. –15˚C, W.B. –15˚C
3. Guaranteed voltage
198~264V, 50Hz 198~242V, 60Hz
4. Above data are based on the indicated voltage.
Single, 50Hz, 220/230/240V, Single, 60Hz, 220V
5. Refer to the service manual of indoor unit for the indoor unit's specifications.
14
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Page 15
• Branch box : PAC-AK50BC PAC-AK30BC
Model name
Connectable number of indoor units
Power supply (from outdoor unit)
Input
Running current
External finish
Drain hose size (on site)
Width
Dimensions
Depth
Height
Weight
W
Branch (indoor side)
Piping
connection
Main (outdoor side)
(Flare)
Wiring
PAC-AK50BC
PAC-AK30BC
MAX. 5
MAX. 3
Single phase, 220/230/240V, 50Hz, Single phase, 220V, 60Hz
0.003
0.05
Galvanized sheets
O.D.20 (VP-16)
450
280
198
9.3
8.1
[6.35 O 5 {A,B,C,D,E}
[6.35 O 3 {A,B,C}
[9.52 O 4 {A,B,C,D}, [12.7 o 1{E}
[9.52 O 3 {A,B,C}
[9.52
[15.88
Each 3-wire, plus earth wire
3-wire, plus earth wire
kW
A
Liquid
Gas
Liquid
Gas
mm
mm
mm
mm
kg
mm
mm
mm
mm
To indoor unit
To outdoor unit
W The piping connection size differs according to the type and capacity of indoor units. Match the piping connection size for
indoor and branch box. If the piping connection size of branch box does not match the piping connection size of indoor units,
use optional different-diameter (deformed) joints to the branch box side. (Connect deformed joint directly to the branch box
side.)
15
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07.8.24 2:11 PM
Page 16
DATA
5-1. CAPACITY AND CHARACTERISTICS
Note:
• Cooling capacity is based on D.B. 27: / W.B. 19.0: (indoor temperature), D.B. 35: (outdoor temperature).
• Heating capacity is based on D.B. 20: (indoor temperature), D.B. 7: / W.B. 6: (outdoor temperature).
The rated capacities below show the rise in the indoor unit connection capacity when operating frequency is constant.
Values for changes in capacity are fixed after accounting for variations in operating frequency and should be used as
reference values.
• Please refer not to the table below but to ”10. ELECTRICAL WIRING” for the breaker selection.
(1) Cooling mode
<Cooling>
Total
Capacity of each
rated
Outdoor unit
Number of operated indoor unit
unit (W)
capacity input (W)
(W)
Unit A Unit B Unit A Unit B
22
–
2200
–
2200
1050
25
–
2500
–
2500
1140
35
–
3500
–
3500
1410
1
50
–
5000
–
5000
1700
60
–
6000
–
6000
2000
71
–
7100
–
7100
2310
22
22
2200
2200
4400
1590
22
25
2200
2500
4700
1650
22
35
2200
3500
5700
1910
22
50
2200
5000
7200
2340
22
60
2200
6000
8200
2620
22
71
2200
7100
9300
2910
25
25
2500
2500
5000
1700
25
35
2500
3500
6000
2000
25
50
2500
5000
7500
2430
25
60
2500
6000
8500
2700
25
71
2500
7100
9600
2990
2
35
35
3500
3500
7000
2290
35
50
3500
5000
8500
2700
35
60
3500
6000
9500
2960
35
71
3500
7100
10600
3370
50
50
5000
5000
10000
3090
50
60
5000
6000
11000
3560
50
71
5000
7100
12100
4140
60
60
6000
6000
12000
4080
60
71
6000
7100
13100
4720
71
71
7000
7000
14000
5220
16
Outdoor unit current (A)
230V
4.6
5.0
6.2
7.5
8.8
10.1
7.0
7.2
8.4
10.3
11.5
12.8
7.5
8.8
10.7
11.9
13.1
10.1
11.9
13.0
14.8
13.6
15.6
18.2
17.9
20.7
22.9
240V
4.4
4.8
5.9
7.2
8.4
9.7
6.7
6.9
8.0
9.8
11.0
12.2
7.2
8.4
10.2
11.4
12.6
9.6
11.4
12.5
14.2
13.0
15.0
17.4
17.2
19.9
22.0
220V
4.8
5.2
6.5
7.8
9.2
10.6
7.3
7.6
8.8
10.7
12.0
13.4
7.8
9.2
11.2
12.4
13.7
10.5
12.4
13.6
15.5
14.2
16.3
19.0
18.7
21.7
24.0
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Page 17
<Cooling>
Number of operated indoor unit
3
Total
rated Outdoor unit
capacity input (W)
(W)
Unit C
2200
6600
2170
2500
6900
2260
3500
7900
2540
5000
9400
2940
6000
10400
3270
7100
11500
3810
2500
7200
2340
3500
8200
2620
5000
9700
3010
6000
10700
3410
7100
11800
3970
3500
9200
2880
5000
10700
3410
6000
11700
3920
7100
12800
4540
5000
12200
4190
6000
13200
4780
6950
14000
5220
5920
14000
5220
6500
14000
5040
6060
14000
4450
2500
7500
2430
3500
8500
2700
5000
10000
3090
6000
11000
3560
7100
12100
4140
3500
9500
2960
5000
11000
3560
6000
12000
4080
7100
13100
4720
5000
12500
4360
6000
13500
4970
6810
14000
5220
5790
14000
5220
6370
14000
4870
5950
14000
4310
3500
10500
3320
5000
12000
4080
6000
13000
4660
7050
14000
5220
5000
13500
4970
5790
14000
5220
6370
14000
4870
5420
14000
4920
5990
14000
4350
5620
14000
3900
4670
14000
5240
5250
14000
4650
5810
14000
4140
4940
14000
4180
5490
14000
3760
4670
14000
3790
Capacity of each unit (W)
Unit A Unit B Unit C Unit A
22
22
22
2200
22
22
25
2200
22
22
35
2200
22
22
50
2200
22
22
60
2200
22
22
71
2200
22
25
25
2200
22
25
35
2200
22
25
50
2200
22
25
60
2200
22
25
71
2200
22
35
35
2200
22
35
50
2200
22
35
60
2200
22
35
71
2200
22
50
50
2200
22
50
60
2200
22
50
71
2150
22
60
60
2170
22
60
71
2010
22
71
71
1880
25
25
25
2500
25
25
35
2500
25
25
50
2500
25
25
60
2500
25
25
71
2500
25
35
35
2500
25
35
50
2500
25
35
60
2500
25
35
71
2500
25
50
50
2500
25
50
60
2500
25
50
71
2400
25
60
60
2410
25
60
71
2240
25
71
71
2100
35
35
35
3500
35
35
50
3500
35
35
60
3500
35
35
71
3480
35
50
50
3500
35
50
60
3380
35
50
71
3140
35
60
60
3160
35
60
71
2950
35
71
71
2770
50
50
50
4670
50
50
60
4380
50
50
71
4090
50
60
60
4120
50
60
71
3870
60
60
60
4670
Unit B
2200
2200
2200
2200
2200
2200
2500
2500
2500
2500
2500
3500
3500
3500
3500
5000
5000
4900
5920
5490
6060
2500
2500
2500
2500
2500
3500
3500
3500
3500
5000
5000
4790
5790
5380
5950
3500
3500
3500
3480
5000
4830
4490
5420
5060
5620
4670
4380
4090
4940
4640
4670
17
Outdoor unit current (A)
230V
9.5
9.9
11.2
12.9
14.4
16.7
10.3
11.5
13.2
15.0
17.4
12.6
15.0
17.2
19.9
18.4
21.0
22.9
22.9
22.1
19.5
10.7
11.9
13.6
15.6
18.2
13.0
15.6
17.9
20.7
19.1
21.8
22.9
22.9
21.4
18.9
14.6
17.9
20.5
22.9
21.8
22.9
21.4
21.6
19.1
17.1
23.0
20.4
18.2
18.4
16.5
16.6
240V
9.1
9.5
10.7
12.4
13.8
16.0
9.8
11.0
12.7
14.4
16.7
12.1
14.4
16.5
19.1
17.6
20.1
22.0
22.0
21.2
18.7
10.2
11.4
13.0
15.0
17.4
12.5
15.0
17.2
19.9
18.4
20.9
22.0
22.0
20.5
18.1
14.0
17.2
19.6
22.0
20.9
22.0
20.5
20.7
18.3
16.4
22.1
19.6
17.4
17.6
15.8
15.9
220V
10.0
10.4
11.7
13.5
15.0
17.5
10.7
12.0
13.8
15.7
18.2
13.2
15.7
18.0
20.8
19.2
21.9
24.0
24.0
23.1
20.4
11.2
12.4
14.2
16.3
19.0
13.6
16.3
18.7
21.7
20.0
22.8
24.0
24.0
22.4
19.8
15.2
18.7
21.4
24.0
22.8
24.0
22.4
22.6
20.0
17.9
24.1
21.3
19.0
19.2
17.3
17.3
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Page 18
<Cooling>
Number of operated indoor unit
4
Unit A Unit B Unit C Unit D
22
22
22
22
22
22
22
25
22
22
22
35
22
22
22
50
22
22
22
60
22
22
22
71
22
22
25
25
22
22
25
35
22
22
25
50
22
22
25
60
22
22
25
71
22
22
35
35
22
22
35
50
22
22
35
60
22
22
35
71
22
22
50
50
22
22
50
60
22
22
50
71
22
22
60
60
22
22
60
71
22
25
25
25
22
25
25
35
22
25
25
50
22
25
25
60
22
25
25
71
22
25
35
35
22
25
35
50
22
25
35
60
22
25
35
71
22
25
50
50
22
25
50
60
22
25
50
71
22
25
60
60
22
25
60
71
22
35
35
35
22
35
35
50
22
35
35
60
22
35
35
71
22
35
50
50
22
35
50
60
22
35
50
71
22
35
60
60
22
50
50
50
22
50
50
60
25
25
25
25
25
25
25
35
25
25
25
50
25
25
25
60
25
25
25
71
25
25
35
35
25
25
35
50
25
25
35
60
25
25
35
71
25
25
50
50
25
25
50
60
25
25
50
71
25
25
60
60
25
25
60
71
25
35
35
35
25
35
35
50
25
35
35
60
25
35
35
71
25
35
50
50
25
35
50
60
25
35
50
71
25
35
60
60
25
50
50
50
25
50
50
60
35
35
35
35
35
35
35
50
35
35
35
60
35
35
35
71
35
35
50
50
35
35
50
60
35
50
50
50
Capacity of each unit (W)
Unit A
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2050
2140
2000
1870
1880
1760
2200
2200
2200
2200
2150
2200
2200
2170
2010
2100
1960
1830
1840
1730
2200
2170
2030
1890
1960
1840
1730
1730
1790
1690
2500
2500
2500
2500
2400
2500
2500
2410
2240
2330
2190
2050
2060
1930
2500
2410
2260
2110
2180
2060
1930
1940
2000
1890
3500
3160
2970
2780
2880
2720
2650
Unit B
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2050
2140
2000
1870
1880
1760
2500
2500
2500
2500
2450
2500
2500
2460
2290
2380
2230
2080
2100
1970
3500
3450
3220
3010
3120
2930
2750
2770
4070
3850
2500
2500
2500
2500
2400
2500
2500
2410
2240
2330
2190
2050
2060
1930
3500
3380
3160
2950
3060
2880
2710
2720
4000
3780
3500
3160
2970
2780
2880
2720
3780
Unit C
2200
2200
2200
2200
2200
2200
2500
2500
2500
2500
2500
3500
3500
3500
3270
4860
4550
4240
5120
4800
2500
2500
2500
2500
2450
3500
3500
3450
3200
4760
4460
4170
5030
4720
3500
3450
3220
3010
4460
4190
3930
4750
4070
3850
2500
2500
2500
2500
2400
3500
3500
3380
3140
4670
4380
4090
4940
4640
3500
3380
3160
2950
4380
4120
3870
4670
4000
3780
3500
3160
2970
2780
4120
3890
3780
18
Unit D
2200
2500
3500
5000
6000
7100
2500
3500
5000
6000
7100
3500
5000
6000
6630
4860
5450
6020
5120
5680
2500
3500
5000
6000
6950
3500
5000
5920
6500
4760
5350
5920
5030
5580
3500
4930
5530
6090
4460
5030
5580
4750
4070
4610
2500
3500
5000
6000
6800
3500
5000
5790
6370
4670
5240
5810
4940
5490
3500
4830
5420
5990
4380
4940
5490
4670
4000
4540
3500
4520
5090
5650
4120
4670
3780
Total
rated
Outdoor unit
capacity
input (W)
(W)
8800
9100
10100
11600
12600
13700
9400
10400
11900
12900
14000
11400
12900
13900
14000
14000
14000
14000
14000
14000
9700
10700
12200
13200
14000
11700
13200
14000
14000
14000
14000
14000
14000
14000
12700
14000
14000
14000
14000
14000
14000
14000
14000
14000
10000
11000
12500
13500
14000
12000
13500
14000
14000
14000
14000
14000
14000
14000
13000
14000
14000
14000
14000
14000
14000
14000
14000
14000
14000
14000
14000
14000
14000
14000
14000
2780
2860
3130
3870
4420
5100
2940
3270
4030
4600
5220
3760
4600
5230
5240
5220
4980
4400
4450
3980
3010
3410
4190
4780
5220
3920
4780
5220
5040
5220
4810
4260
4310
3860
4480
5220
5110
4500
4810
4310
3860
3900
4090
3730
3090
3560
4360
4970
5220
4080
4970
5220
4870
5240
4650
4140
4180
3760
4660
5220
4920
4350
4650
4180
3760
3790
3980
3630
5220
4920
4400
3940
4180
3790
3630
Outdoor unit current (A)
230V
12.2
12.6
13.7
17.0
19.4
22.4
12.9
14.4
17.7
20.2
22.9
16.5
20.2
23.0
23.0
22.9
21.9
19.3
19.5
17.5
13.2
15.0
18.4
21.0
22.9
17.2
21.0
22.9
22.1
22.9
21.1
18.7
18.9
17.0
19.7
22.9
22.4
19.8
21.1
18.9
17.0
17.1
18.0
16.4
13.6
15.6
19.1
21.8
22.9
17.9
21.8
22.9
21.4
23.0
20.4
18.2
18.4
16.5
20.5
22.9
21.6
19.1
20.4
18.4
16.5
16.6
17.5
15.9
22.9
21.6
19.3
17.3
18.4
16.6
15.9
240V
11.7
12.0
13.2
16.3
18.6
21.5
12.4
13.8
17.0
19.4
22.0
15.8
19.4
22.0
22.1
22.0
21.0
18.5
18.7
16.8
12.7
14.4
17.6
20.1
22.0
16.5
20.1
22.0
21.2
22.0
20.2
17.9
18.1
16.2
18.9
22.0
21.5
18.9
20.2
18.1
16.2
16.4
17.2
15.7
13.0
15.0
18.4
20.9
22.0
17.2
20.9
22.0
20.5
22.1
19.6
17.4
17.6
15.8
19.6
22.0
20.7
18.3
19.6
17.6
15.8
16.0
16.8
15.3
22.0
20.7
18.5
16.6
17.6
16.0
15.3
220V
12.8
13.1
14.4
17.8
20.3
23.4
13.5
15.0
18.5
21.1
24.0
17.3
21.1
24.0
24.1
24.0
22.9
20.2
20.4
18.3
13.8
15.7
19.2
21.9
24.0
18.0
21.9
24.0
23.1
24.0
22.1
19.6
19.8
17.7
20.6
24.0
23.5
20.7
22.1
19.8
17.7
17.9
18.8
17.1
14.2
16.3
20.0
22.8
24.0
18.7
22.8
24.0
22.4
24.1
21.3
19.0
19.2
17.3
21.4
24.0
22.6
20.0
21.3
19.2
17.3
17.4
18.3
16.7
24.0
22.6
20.2
18.1
19.2
17.4
16.7
OC316D--1.qxp
07.8.24 2:11 PM
Page 19
<Cooling>
Capacity of each unit (W)
Number of operated indoor unit
5
Unit A Unit B Unit C Unit D Unit E
22
22
22
22
22
22
22
22
22
25
22
22
22
22
35
22
22
22
22
50
22
22
22
22
60
22
22
22
22
71
22
22
22
25
25
22
22
22
25
35
22
22
22
25
50
22
22
22
25
60
22
22
22
25
71
22
22
22
35
35
22
22
22
35
50
22
22
22
35
60
22
22
22
35
71
22
22
22
50
50
22
22
22
50
60
22
22
25
25
25
22
22
25
25
35
22
22
25
25
50
22
22
25
25
60
22
22
25
25
71
22
22
25
35
35
22
22
25
35
50
22
22
25
35
60
22
22
25
35
71
22
22
25
50
50
22
22
25
50
60
22
22
35
35
35
22
22
35
35
50
22
22
35
35
60
22
22
35
35
71
22
22
35
50
50
22
25
25
25
25
22
25
25
25
35
22
25
25
25
50
22
25
25
25
60
22
25
25
25
71
22
25
25
35
35
22
25
25
35
50
22
25
25
35
60
22
25
25
35
71
22
25
25
50
50
22
25
25
50
60
22
25
35
35
35
22
25
35
35
50
22
25
35
35
60
22
25
35
50
50
22
35
35
35
35
22
35
35
35
50
25
25
25
25
25
25
25
25
25
35
25
25
25
25
50
25
25
25
25
60
25
25
25
25
71
25
25
25
35
35
25
25
25
35
50
25
25
25
35
60
25
25
25
35
71
25
25
25
50
50
25
25
25
50
60
25
25
35
35
35
25
25
35
35
50
25
25
35
35
60
25
25
35
50
50
25
35
35
35
35
25
35
35
35
50
35
35
35
35
35
Unit A
2200
2200
2200
2200
2080
1940
2200
2200
2180
2040
1900
2200
2040
1910
1790
1860
1750
2200
2200
2140
2000
1870
2200
2000
1880
1760
1820
1720
2060
1880
1770
1660
1720
2200
2200
2100
1960
1830
2170
1960
1840
1730
1790
1690
2030
1840
1740
1690
1900
1740
2500
2500
2330
2190
2050
2410
2190
2060
1930
2000
1890
2260
2060
1940
1890
2120
1940
2800
Unit B
2200
2200
2200
2200
2080
1940
2200
2200
2180
2040
1900
2200
2040
1910
1790
1860
1750
2200
2200
2140
2000
1870
2200
2000
1880
1760
1820
1720
2060
1880
1770
1660
1720
2500
2500
2380
2230
2080
2460
2230
2100
1970
2030
1920
2300
2100
1980
1920
3020
2770
2500
2500
2330
2190
2050
2410
2190
2060
1930
2000
1890
2260
2060
1940
1890
2970
2720
2800
Unit C
2200
2200
2200
2200
2080
1940
2200
2200
2180
2040
1900
2200
2040
1910
1790
1860
1750
2500
2500
2430
2270
2120
2500
2270
2130
2000
2070
1960
3290
2990
2820
2650
2740
2500
2500
2380
2230
2080
2460
2230
2100
1970
2030
1920
3220
2930
2770
2690
3020
2770
2500
2500
2330
2190
2050
2410
2190
2060
1930
2000
1890
3160
2880
2720
2650
2970
2720
2800
19
Unit D
2200
2200
2200
2200
2080
1940
2500
2500
2480
2320
2160
3500
3250
3040
2850
4210
3980
2500
2500
2430
2270
2120
3500
3180
2990
2800
4140
3910
3290
2990
2820
2650
3910
2500
2500
2380
2230
2080
3450
3120
2930
2750
4070
3850
3220
2930
2770
3850
3020
2770
2500
2500
2330
2190
2050
3380
3060
2880
2710
4000
3780
3160
2880
2720
3780
2970
2720
2800
Total
Outdoor unit
rated
capacity input (W)
(W)
Unit E
2200
11000
3450
2500
11300
3610
3500
12300
4190
5000
13800
5200
5680
14000
5220
6240
14000
4700
2500
11600
3780
3500
12600
4370
4960
14000
5220
5560
14000
5170
6140
14000
4550
3500
13600
5060
4630
14000
5170
5220
14000
4600
5780
14000
4090
4210
14000
4350
4770
14000
3940
2500
11900
3950
3500
12900
4570
4860
14000
5220
5450
14000
4980
6020
14000
4400
3500
13900
5280
4550
14000
4980
5120
14000
4450
5680
14000
3980
4140
14000
4220
4690
14000
3830
3290
14000
5220
4260
14000
4450
4820
14000
4010
5370
14000
3630
3910
14000
3830
2500
12200
4120
3500
13200
4770
4760
14000
5220
5350
14000
4810
5920
14000
4260
3450
14000
5220
4460
14000
4810
5030
14000
4310
5580
14000
3860
4070
14000
4090
4620
14000
3730
3220
14000
5110
4190
14000
4310
4740
14000
3900
3850
14000
3730
3020
14000
4550
3950
14000
3900
2500
12500
4310
3500
13500
4980
4670
14000
5240
5240
14000
4650
5800
14000
4140
3380
14000
5220
4370
14000
4650
4940
14000
4180
5490
14000
3760
4000
14000
3980
4540
14000
3630
3160
14000
4920
4120
14000
4180
4670
14000
3790
3780
14000
3630
2970
14000
4400
3890
14000
3790
2800
14000
3980
Outdoor unit current (A)
230V
15.2
15.9
18.4
22.8
22.9
20.6
16.6
19.2
22.9
22.7
20.0
22.2
22.7
20.2
18.0
19.1
17.3
17.3
20.1
22.9
21.9
19.3
23.2
21.9
19.5
17.5
18.5
16.8
22.9
19.5
17.6
15.9
16.8
18.1
20.9
22.9
21.1
18.7
22.9
21.1
18.9
17.0
18.0
16.4
22.4
18.9
17.1
16.4
20.0
17.1
18.9
21.9
23.0
20.4
18.2
22.9
20.4
18.4
16.5
17.5
15.9
21.6
18.4
16.6
15.9
19.3
16.6
17.5
240V
14.5
15.2
17.6
21.9
22.0
19.8
15.9
18.4
22.0
21.8
19.1
21.3
21.8
19.4
17.2
18.3
16.6
16.6
19.2
22.0
21.0
18.5
22.2
21.0
18.7
16.8
17.8
16.1
22.0
18.7
16.9
15.3
16.1
17.3
20.1
22.0
20.2
17.9
22.0
20.2
18.1
16.2
17.2
15.7
21.5
18.1
16.4
15.7
19.1
16.4
18.1
21.0
22.1
19.6
17.4
22.0
19.6
17.6
15.8
16.8
15.3
20.7
17.6
16.0
15.3
18.5
16.0
16.8
220V
15.8
16.6
19.2
23.9
24.0
21.6
17.4
20.1
24.0
23.7
20.9
23.2
23.7
21.1
18.8
20.0
18.1
18.1
21.0
24.0
22.9
20.2
24.2
22.9
20.4
18.3
19.4
17.6
24.0
20.4
18.4
16.7
17.6
18.9
21.9
24.0
22.1
19.6
24.0
22.1
19.8
17.7
18.8
17.1
23.5
19.8
17.9
17.1
20.9
17.9
19.8
22.9
24.1
21.3
19.0
24.0
21.3
19.2
17.3
18.3
16.7
22.6
19.2
17.4
16.7
20.2
17.4
18.3
OC316D--1.qxp
07.8.24 2:11 PM
Page 20
<Cooling>
Capacity of each unit (W)
Number of operated indoor unit
6
Unit A
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
25
25
25
25
25
25
Unit B
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Unit C Unit D
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
22
25
22
25
22
25
22
25
22
25
22
35
25
25
25
25
25
25
25
25
25
25
25
25
25
35
35
35
25
25
25
25
25
25
25
25
25
25
25
25
25
35
25
25
25
25
25
25
25
25
25
25
25
25
25
35
Unit E
22
22
22
22
22
22
25
25
25
25
25
35
35
35
25
25
25
25
35
35
35
25
25
25
25
35
35
35
35
25
25
25
25
35
35
35
25
25
25
25
35
35
35
Unit F
22
25
35
50
60
71
25
35
50
60
71
35
50
60
25
35
50
60
35
50
35
25
35
50
60
35
50
35
35
25
35
50
60
35
50
35
25
35
50
60
35
50
35
Unit A
2200
2200
2120
1920
1810
1700
2200
2080
1890
1780
1670
1950
1780
1680
2180
2040
1860
1750
1910
1750
1800
2140
2000
1820
1720
1880
1720
1770
1670
2100
1960
1790
1690
1840
1690
1730
2330
2190
2000
1890
2060
1890
1940
Unit B
2200
2200
2120
1920
1810
1700
2200
2080
1890
1780
1670
1950
1780
1680
2180
2040
1860
1750
1910
1750
1800
2140
2000
1820
1720
1880
1720
1770
1670
2380
2230
2030
1920
2100
1920
1980
2330
2190
2000
1890
2060
1890
1940
Unit C Unit D
2200 2200
2200 2200
2120 2120
1920 1920
1810 1810
1700 1700
2200 2200
2080 2080
1890 1890
1780 1780
1670 1670
1950 1950
1780 1780
1680 1680
2180 2480
2040 2320
1860 2100
1750 1990
1910 2170
1750 1990
1800 2860
2430 2430
2270 2270
2070 2070
1960 1960
2130 2130
1960 1960
2000 2820
2660 2660
2380 2380
2230 2230
2030 2030
1920 1920
2100 2100
1920 1920
1980 2770
2330 2330
2190 2190
2000 2000
1890 1890
2060 2060
1890 1890
1940 2720
20
Unit E
2200
2200
2120
1920
1810
1700
2500
2360
2150
2020
1900
3100
2830
2680
2480
2320
2100
1990
3040
2780
2860
2430
2270
2070
1960
2990
2740
2820
2660
2380
2230
2030
1920
2930
2690
2770
2330
2190
2000
1890
2880
2650
2720
Total
rated Outdoor unit Outdoor unit current (A)
capacity input (W)
(W)
Unit F
230V 240V 220V
2200 13200
4770
20.9
20.1
21.9
2500 13500
4980
21.9
21.0
22.9
3380 14000
5220
22.9
22.0
24.0
4380 14000
4650
20.4
19.6
21.3
4940 14000
4180
18.4
17.6
19.2
5490 14000
3760
16.5
15.8
17.3
2500 13800
5200
22.8
21.9
23.9
3310 14000
5220
22.9
22.0
24.0
4290 14000
4500
19.8
18.9
20.7
4860 14000
4050
17.8
17.0
18.6
5400 14000
3660
16.1
15.4
16.8
3100 14000
4750
20.9
20.0
21.8
4050 14000
4050
17.8
17.0
18.6
4590 14000
3690
16.2
15.5
16.9
2480 14000
5220
22.9
22.0
24.0
3240 14000
5170
22.7
21.8
23.7
4220 14000
4350
19.1
18.3
20.0
4770 14000
3940
17.3
16.6
18.1
3040 14000
4600
20.2
19.4
21.1
3980 14000
3940
17.3
16.6
18.1
2860 14000
4140
18.2
17.4
19.0
2430 14000
5220
22.9
22.0
24.0
3180 14000
4980
21.9
21.0
22.9
4140 14000
4220
18.5
17.8
19.4
4680 14000
3830
16.8
16.1
17.6
2990 14000
4450
19.5
18.7
20.4
3900 14000
3830
16.8
16.1
17.6
2820 14000
4010
17.6
16.9
18.4
2660 14000
3660
16.1
15.4
16.8
2380 14000
5220
22.9
22.0
24.0
3120 14000
4810
21.1
20.2
22.1
4070 14000
4090
18.0
17.2
18.8
4620 14000
3730
16.4
15.7
17.1
2930 14000
4310
18.9
18.1
19.8
3850 14000
3730
16.4
15.7
17.1
2770 14000
3900
17.1
16.4
17.9
2330 14000
5240
23.0
22.1
24.1
3050 14000
4650
20.4
19.6
21.3
4000 14000
3980
17.5
16.8
18.3
4540 14000
3630
15.9
15.3
16.7
2880 14000
4180
18.4
17.6
19.2
3780 14000
3630
15.9
15.3
16.7
2720 14000
3790
16.6
16.0
17.4
OC316D--1.qxp
07.8.24 2:11 PM
Page 21
<Cooling>
Capacity of each unit (W)
Number of operated indoor unit
Unit A
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
25
7
Unit B Unit C Unit D Unit E
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 25
22 22 22 25
22 22 22 25
22 22 25 25
22 22 25 25
22 25 25 25
22 25 25 25
25 25 25 25
25 25 25 25
25 25 25 25
25 25 25 25
Unit F Unit G
22 22
22 25
22 35
22 50
25 25
25 35
25 50
35 35
25 25
25 35
35 35
25 25
25 35
25 25
25 35
25 25
25 35
25 25
25 35
Unit A Unit B Unit C Unit D Unit E Unit F Unit G
2000 2000 2000 2000 2000 2000 2000
1960 1960 1960 1960 1960 1960 2230
1840 1840 1840 1840 1840 1840 2930
1690 1690 1690 1690 1690 1690 3850
1920 1920 1920 1920 1920 2190 2190
1810 1810 1810 1810 1810 2060 2880
1660 1660 1660 1660 1660 1890 3780
1710 1710 1710 1710 1710 2720 2720
1890 1890 1890 1890 2140 2140 2140
1780 1780 1780 1780 2020 2020 2830
1680 1680 1680 1680 1910 2680 2680
1850 1850 1850 2110 2110 2110 2110
1750 1750 1750 1990 1990 1990 2780
1820 1820 2070 2070 2070 2070 2070
1710 1710 1960 1960 1960 1960 2740
1790 2030 2030 2030 2030 2030 2030
1690 1920 1920 1920 1920 1920 2690
2000 2000 2000 2000 2000 2000 2000
1890 1890 1890 1890 1890 1890 2650
Total
rated Outdoor unit
capacity input (W)
(W)
14000
4980
14000
4810
14000
4310
14000
3730
14000
4650
14000
4180
14000
3630
14000
3790
14000
4500
14000
4050
14000
3690
14000
4350
14000
3940
14000
4220
14000
3830
14000
4090
14000
3730
14000
3980
14000
3630
Outdoor unit current (A)
230V
21.9
21.1
18.9
16.4
20.4
18.4
15.9
16.6
19.8
17.8
16.2
19.1
17.3
18.5
16.8
18.0
16.4
17.5
15.9
240V
21.0
20.2
18.1
15.7
19.6
17.6
15.3
16.0
18.9
17.0
15.5
18.3
16.6
17.8
16.1
17.2
15.7
16.8
15.3
220V
22.9
22.1
19.8
17.1
21.3
19.2
16.7
17.4
20.7
18.6
16.9
20.0
18.1
19.4
17.6
18.8
17.1
18.3
16.7
<Cooling>
Total
rated Outdoor unit
capacity input (W)
Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H (W)
22 22 22 22 22 22 22 22 1750 1750 1750 1750 1750 1750 1750 1750 14000
3940
22 22 22 22 22 22 22 25 1720 1720 1720 1720 1720 1720 1720 1960 14000
3830
22 22 22 22 22 22 25 25 1690 1690 1690 1690 1690 1690 1920 1920 14000
3730
22 22 22 22 22 25 25 25 1660 1660 1660 1660 1660 1890 1890 1890 14000
3630
Capacity of each unit (W)
Number of operated indoor unit
8
21
Outdoor unit current (A)
230V
17.3
16.8
16.4
15.9
240V
16.6
16.1
15.7
15.3
220V
18.1
17.6
17.1
16.7
OC316D--1.qxp
07.8.24 2:11 PM
Page 22
(2) Heating mode
<Heating>
Number of operated indoor unit
1
2
Unit A Unit B
22
–
25
–
35
–
50
–
60
–
71
–
22
22
22
25
22
35
22
50
22
60
22
71
25
25
25
35
25
50
25
60
25
71
35
35
35
50
35
60
35
71
50
50
50
60
50
71
60
60
60
71
71
71
Total
rated Outdoor unit
capacity input (W)
(W)
Unit B
–
3300
1130
–
3600
1240
–
4000
1370
–
7200
2470
–
7900
2740
–
8600
3020
2500
5000
1720
2870
5400
1860
3990
6500
2250
5690
8200
2880
6880
9400
3340
8090
10600
3810
2850
5700
1960
4020
6900
2400
5730
8600
3030
6850
9700
3450
8140
11000
3960
4000
8000
2810
5710
9700
3450
6880
10900
3920
8100
12100
4350
5700
11400
4120
6870
12600
4510
8100
13800
4880
6850
13700
4850
8130
15000
5260
8000
16000
5430
Capacity of
each unit (W)
Outdoor unit current (A)
Unit A
3300
3600
4000
7200
7900
8600
2500
2530
2510
2510
2520
2510
2850
2880
2870
2850
2860
4000
3990
4020
4000
5700
5730
5700
6850
6870
8000
230V
5.0
5.4
6.0
10.8
12.0
13.3
7.6
8.2
9.9
12.6
14.7
16.7
8.6
10.5
13.3
15.2
17.4
12.3
15.2
17.2
19.1
18.1
19.8
21.4
21.3
23.1
23.8
22
240V
4.8
5.2
5.8
10.4
11.5
12.7
7.2
7.8
9.5
12.1
14.1
16.0
8.2
10.1
12.8
14.5
16.7
11.8
14.5
16.5
18.3
17.3
19.0
20.5
20.4
22.1
22.9
220V
5.2
5.7
6.3
11.3
12.6
13.9
7.9
8.5
10.3
13.2
15.3
17.5
9.0
11.0
13.9
15.8
18.2
12.9
15.8
18.0
20.0
18.9
20.7
22.4
22.3
24.2
24.9
OC316D--1.qxp
07.8.24 2:11 PM
Page 23
<Heating>
Number of operated indoor unit
3
Unit A Unit B Unit C
22
22
22
22
22
25
22
22
35
22
22
50
22
22
60
22
22
71
22
25
25
22
25
35
22
25
50
22
25
60
22
25
71
22
35
35
22
35
50
22
35
60
22
35
71
22
50
50
22
50
60
22
50
71
22
60
60
22
60
71
22
71
71
25
25
25
25
25
35
25
25
50
25
25
60
25
25
71
25
35
35
25
35
50
25
35
60
25
35
71
25
50
50
25
50
60
25
50
71
25
60
60
25
60
71
25
71
71
35
35
35
35
35
50
35
35
60
35
35
71
35
50
50
35
50
60
35
50
71
35
60
60
35
60
71
35
71
71
50
50
50
50
50
60
50
50
71
50
60
60
50
60
71
60
60
60
Total
rated Outdoor unit
capacity input (W)
(W)
Unit C
2500
7500
2620
2860
7900
2770
3980
9000
3190
5690
10700
3850
6860
11900
4280
8090
13100
4660
2850
8200
2880
4010
9400
3340
5720
11100
4000
6840
12200
4380
8120
13500
4790
3990
10500
3770
5700
12200
4380
6870
13400
4760
8100
14600
5130
5700
13900
4910
6860
15100
5290
7940
16000
5370
6760
16000
5430
7420
16000
4880
6930
16000
4430
2860
8600
3030
3990
9700
3450
5700
11400
4120
6870
12600
4510
8100
13800
4880
4020
10900
3920
5730
12600
4510
6850
13700
4850
8130
15000
5260
5720
14300
5040
6840
15400
5380
7780
16000
5210
6620
16000
5270
7280
16000
4750
6800
16000
4320
4000
12000
4320
5700
13700
4850
6880
14900
5230
8060
16000
5480
5700
15400
5380
6620
16000
5270
7280
16000
4750
6190
16000
4790
6840
16000
4350
6420
16000
3990
5330
16000
5020
6000
16000
4580
6640
16000
4180
5650
16000
4210
6280
16000
3870
5330
16000
3900
Capacity of each unit (W)
Unit A
2500
2520
2510
2500
2520
2510
2500
2520
2520
2510
2520
2510
2510
2520
2510
2500
2520
2460
2480
2300
2140
2860
2850
2850
2860
2850
2860
2860
2850
2860
2860
2850
2740
2760
2560
2400
4000
4000
4010
3970
3990
3860
3590
3610
3370
3160
5330
5000
4680
4700
4420
5330
Unit B
2500
2520
2510
2500
2520
2510
2850
2870
2860
2850
2860
3990
3990
4010
3990
5700
5720
5590
6760
6270
6930
2860
2850
2850
2860
2850
4020
4010
4000
4010
5720
5700
5480
6620
6150
6800
4000
4000
4010
3970
5700
5520
5130
6190
5780
6420
5330
5000
4680
5650
5300
5330
23
Outdoor unit current (A)
230V
11.5
12.2
14.0
16.9
18.8
20.5
12.6
14.7
17.6
19.2
21.0
16.6
19.2
20.9
22.5
21.6
23.2
23.6
23.8
21.4
19.5
13.3
15.2
18.1
19.8
21.4
17.2
19.8
21.3
23.1
22.1
23.6
22.9
23.1
20.9
19.0
19.0
21.3
23.0
24.1
23.6
23.1
20.9
21.0
19.1
17.5
22.0
20.1
18.4
18.5
17.0
17.1
240V
11.0
11.7
13.4
16.2
18.0
19.6
12.1
14.1
16.8
18.4
20.2
15.9
18.4
20.0
21.6
20.7
22.3
22.6
22.9
20.5
18.6
12.8
14.5
17.3
19.0
20.5
16.5
19.0
20.4
22.1
21.2
22.6
21.9
22.2
20.0
18.2
18.2
20.4
22.0
23.1
22.6
22.2
20.0
20.2
18.3
16.8
21.1
19.3
17.6
17.7
16.3
16.3
220V
12.0
12.7
14.6
17.7
19.7
21.4
13.2
15.3
18.4
20.1
22.0
17.3
20.1
21.9
23.6
22.5
24.3
24.7
24.9
22.4
20.3
13.9
15.8
18.9
20.7
22.4
18.0
20.7
22.3
24.2
23.1
24.7
23.9
24.2
21.8
19.8
19.8
22.3
24.0
25.2
24.7
24.2
21.8
22.0
20.0
18.3
23.0
21.0
19.2
19.3
17.8
17.8
OC316D--1.qxp
07.8.24 2:11 PM
Page 24
<Heating>
Number of operated indoor unit
4
Unit A Unit B Unit C Unit D
22
22
22
22
22
22
22
25
22
22
22
35
22
22
22
50
22
22
22
60
22
22
22
71
22
22
25
25
22
22
25
35
22
22
25
50
22
22
25
60
22
22
25
71
22
22
35
35
22
22
35
50
22
22
35
60
22
22
35
71
22
22
50
50
22
22
50
60
22
22
50
71
22
22
60
60
22
22
60
71
22
25
25
25
22
25
25
35
22
25
25
50
22
25
25
60
22
25
25
71
22
25
35
35
22
25
35
50
22
25
35
60
22
25
35
71
22
25
50
50
22
25
50
60
22
25
50
71
22
25
60
60
22
25
60
71
22
35
35
35
22
35
35
50
22
35
35
60
22
35
35
71
22
35
50
50
22
35
50
60
22
35
50
71
22
35
60
60
22
50
50
50
22
50
50
60
25
25
25
25
25
25
25
35
25
25
25
50
25
25
25
60
25
25
25
71
25
25
35
35
25
25
35
50
25
25
35
60
25
25
35
71
25
25
50
50
25
25
50
60
25
25
50
71
25
25
60
60
25
25
60
71
25
35
35
35
25
35
35
50
25
35
35
60
25
35
35
71
25
35
50
50
25
35
50
60
25
35
50
71
25
35
60
60
25
50
50
50
25
50
50
60
35
35
35
35
35
35
35
50
35
35
35
60
35
35
35
71
35
35
50
50
35
35
50
60
35
50
50
50
Capacity of each unit (W)
Unit A
2520
2510
2500
2520
2510
2520
2500
2520
2510
2510
2510
2510
2510
2520
2350
2440
2290
2130
2150
2010
2520
2510
2510
2520
2460
2520
2520
2480
2300
2390
2240
2100
2100
1980
2500
2480
2320
2160
2230
2110
1980
1990
2050
1930
2850
2860
2860
2850
2740
2850
2850
2760
2560
2670
2500
2340
2350
2210
2870
2760
2580
2410
2500
2350
2210
2220
2290
2160
4000
3610
3390
3180
3290
3110
3030
Unit B
2520
2510
2500
2520
2510
2520
2500
2520
2510
2510
2510
2510
2510
2520
2350
2440
2290
2130
2150
2010
2860
2850
2850
2860
2800
2860
2860
2820
2610
2720
2550
2380
2400
2250
4000
3940
3680
3440
3570
3350
3150
3160
4650
4400
2850
2860
2860
2850
2740
2850
2850
2760
2560
2670
2500
2340
2350
2210
4010
3860
3610
3370
3500
3290
3090
3110
4570
4320
4000
3610
3390
3180
3290
3110
4320
Unit C
2520
2510
2500
2520
2510
2520
2850
2860
2860
2850
2860
3990
3990
4000
3730
5560
5190
4850
5850
5490
2860
2850
2850
2860
2800
4010
4000
3940
3660
5440
5100
4760
5750
5390
4000
3940
3680
3440
5100
4790
4490
5420
4650
4400
2850
2860
2860
2850
2740
4000
3990
3860
3590
5330
5000
4680
5650
5300
4010
3860
3610
3370
5000
4710
4420
5330
4570
4320
4000
3610
3390
3180
4710
4440
4320
24
Unit D
2520
2860
3990
5730
6860
8140
2850
4000
5710
6830
8110
3990
5690
6860
7570
5560
6230
6880
5850
6490
2860
3990
5690
6860
7940
4010
5720
6760
7420
5440
6110
6760
5750
6380
4000
5630
6320
6960
5100
5750
6380
5420
4650
5270
2850
4010
5720
6840
7780
4000
5700
6620
7280
5330
6000
6640
5650
6280
4010
5520
6190
6840
5000
5650
6280
5330
4570
5190
4000
5160
5820
6450
4710
5330
4320
Total
Outdoor unit
rated
input (W)
capacity
(W)
10100
10400
11500
13300
14400
15700
10700
11900
13600
14700
16000
13000
14700
15900
16000
16000
16000
16000
16000
16000
11100
12200
13900
15100
16000
13400
15100
16000
16000
16000
16000
16000
16000
16000
14500
16000
16000
16000
16000
16000
16000
16000
16000
16000
11400
12600
14300
15400
16000
13700
15400
16000
16000
16000
16000
16000
16000
16000
14900
16000
16000
16000
16000
16000
16000
16000
16000
16000
16000
16000
16000
16000
16000
16000
16000
3610
3730
4150
4730
5070
5470
3850
4280
4820
5160
5540
4630
5160
5530
5020
5320
4830
4390
4430
4050
4000
4380
4910
5290
5370
4760
5290
5430
4880
5160
4700
4280
4320
3960
5100
5430
4920
4460
4700
4320
3960
3990
4150
3850
4120
4510
5040
5380
5210
4850
5380
5270
4750
5020
4580
4180
4210
3870
5230
5270
4790
4350
4580
4210
3870
3900
4050
3760
5540
4790
4390
4020
4210
3900
3760
Outdoor unit current (A)
230V
15.9
16.4
18.2
20.8
22.3
24.0
16.9
18.8
21.2
22.7
24.3
20.3
22.7
24.3
22.0
23.4
21.2
19.3
19.5
17.8
17.6
19.2
21.6
23.2
23.6
20.9
23.2
23.8
21.4
22.7
20.6
18.8
19.0
17.4
22.4
23.8
21.6
19.6
20.6
19.0
17.4
17.5
18.2
16.9
18.1
19.8
22.1
23.6
22.9
21.3
23.6
23.1
20.9
22.0
20.1
18.4
18.5
17.0
23.0
23.1
21.0
19.1
20.1
18.5
17.0
17.1
17.8
16.5
24.3
21.0
19.3
17.7
18.5
17.1
16.5
240V
15.2
15.7
17.5
19.9
21.3
23.0
16.2
18.0
20.3
21.7
23.3
19.5
21.7
23.3
21.1
22.4
20.3
18.5
18.6
17.0
16.8
18.4
20.7
22.3
22.6
20.0
22.3
22.9
20.5
21.7
19.8
18.0
18.2
16.7
21.5
22.9
20.7
18.8
19.8
18.2
16.7
16.8
17.5
16.2
17.3
19.0
21.2
22.6
21.9
20.4
22.6
22.2
20.0
21.1
19.3
17.6
17.7
16.3
22.0
22.2
20.2
18.3
19.3
17.7
16.3
16.4
17.0
15.8
23.3
20.2
18.5
16.9
17.7
16.4
15.8
220V
16.6
17.1
19.1
21.7
23.3
25.1
17.7
19.7
22.1
23.7
25.4
21.3
23.7
25.4
23.0
24.4
22.2
20.2
20.3
18.6
18.4
20.1
22.5
24.3
24.7
21.9
24.3
24.9
22.4
23.7
21.6
19.7
19.8
18.2
23.4
24.9
22.6
20.5
21.6
19.8
18.2
18.3
19.1
17.7
18.9
20.7
23.1
24.7
23.9
22.3
24.7
24.2
21.8
23.0
21.0
19.2
19.3
17.8
24.0
24.2
22.0
20.0
21.0
19.3
17.8
17.9
18.6
17.3
25.4
22.0
20.2
18.5
19.3
17.9
17.3
OC316D--1.qxp
07.8.24 2:11 PM
Page 25
<Heating>
Capacity of each unit (W)
Number of operated indoor unit
5
Unit A Unit B Unit C Unit D Unit E
22
22
22
22
22
22
22
22
22
25
22
22
22
22
35
22
22
22
22
50
22
22
22
22
60
22
22
22
22
71
22
22
22
25
25
22
22
22
25
35
22
22
22
25
50
22
22
22
25
60
22
22
22
25
71
22
22
22
35
35
22
22
22
35
50
22
22
22
35
60
22
22
22
35
71
22
22
22
50
50
22
22
22
50
60
22
22
25
25
25
22
22
25
25
35
22
22
25
25
50
22
22
25
25
60
22
22
25
25
71
22
22
25
35
35
22
22
25
35
50
22
22
25
35
60
22
22
25
35
71
22
22
25
50
50
22
22
25
50
60
22
22
35
35
35
22
22
35
35
50
22
22
35
35
60
22
22
35
35
71
22
22
35
50
50
22
25
25
25
25
22
25
25
25
35
22
25
25
25
50
22
25
25
25
60
22
25
25
25
71
22
25
25
35
35
22
25
25
35
50
22
25
25
35
60
22
25
25
35
71
22
25
25
50
50
22
25
25
50
60
22
25
35
35
35
22
25
35
35
50
22
25
35
35
60
22
25
35
50
50
22
35
35
35
35
22
35
35
35
50
25
25
25
25
25
25
25
25
25
35
25
25
25
25
50
25
25
25
25
60
25
25
25
25
71
25
25
25
35
35
25
25
25
35
50
25
25
25
35
60
25
25
25
35
71
25
25
25
50
50
25
25
25
50
60
25
25
35
35
35
25
25
35
35
50
25
25
35
35
60
25
25
35
50
50
25
35
35
35
35
25
35
35
35
50
35
35
35
35
35
Unit A
2520
2510
2520
2520
2380
2210
2520
2510
2500
2330
2170
2510
2330
2190
2050
2120
2000
2510
2510
2440
2290
2130
2520
2290
2150
2010
2080
1970
2360
2150
2020
1900
1970
2500
2520
2390
2240
2100
2480
2240
2110
1980
2040
1930
2320
2110
1990
1920
2160
1990
2860
2850
2670
2500
2340
2760
2500
2350
2210
2290
2160
2580
2350
2220
2160
2420
2220
3200
Unit B
2520
2510
2520
2520
2380
2210
2520
2510
2500
2330
2170
2510
2330
2190
2050
2120
2000
2510
2510
2440
2290
2130
2520
2290
2150
2010
2080
1970
2360
2150
2020
1900
1970
2850
2860
2720
2550
2380
2820
2550
2400
2250
2330
2200
2630
2400
2260
2200
3460
3160
2860
2850
2670
2500
2340
2760
2500
2350
2210
2290
2160
2580
2350
2220
2160
3390
3110
3200
Unit C
2520
2510
2520
2520
2380
2210
2520
2510
2500
2330
2170
2510
2330
2190
2050
2120
2000
2860
2850
2780
2600
2420
2860
2600
2440
2290
2370
2230
3760
3410
3220
3030
3120
2850
2860
2720
2550
2380
2820
2550
2400
2250
2330
2200
3680
3350
3160
3080
3460
3160
2860
2850
2670
2500
2340
2760
2500
2350
2210
2290
2160
3610
3290
3110
3030
3390
3110
3200
25
Unit D
2520
2510
2520
2520
2380
2210
2870
2860
2840
2650
2470
3980
3710
3480
3260
4820
4550
2860
2850
2780
2600
2420
4000
3640
3410
3200
4730
4470
3760
3410
3220
3030
4470
2850
2860
2720
2550
2380
3940
3570
3350
3150
4650
4400
3680
3350
3160
4400
3460
3160
2860
2850
2670
2500
2340
3860
3500
3290
3090
4560
4320
3610
3290
3110
4320
3390
3110
3200
Total
rated Outdoor unit
capacity input (W)
(W)
Unit E
2520
12600
4510
2850
12900
4600
4010
14100
4980
5720
15800
5500
6480
16000
5110
7140
16000
4620
2870
13300
4730
4000
14400
5070
5660
16000
5480
6360
16000
4970
7010
16000
4500
3980
15500
5410
5300
16000
4970
5950
16000
4540
6590
16000
4150
4820
16000
4350
5450
16000
4020
2860
13600
4820
3980
14700
5160
5560
16000
5320
6220
16000
4830
6880
16000
4390
4000
15900
5530
5180
16000
4830
5850
16000
4430
6490
16000
4050
4730
16000
4250
5360
16000
3930
3760
16000
5060
4880
16000
4430
5520
16000
4080
6140
16000
3760
4470
16000
3930
2850
13900
4910
4000
15100
5290
5440
16000
5160
6110
16000
4700
6760
16000
4280
3940
16000
5430
5090
16000
4700
5740
16000
4320
6370
16000
3960
4650
16000
4150
5270
16000
3850
3680
16000
4920
4790
16000
4320
5420
16000
3990
4400
16000
3850
3460
16000
4500
4520
16000
3990
2860
14300
5040
3990
15400
5380
5320
16000
5020
6000
16000
4580
6640
16000
4180
3860
16000
5270
5000
16000
4580
5650
16000
4210
6280
16000
3870
4560
16000
4050
5190
16000
3760
3610
16000
4790
4710
16000
4210
5330
16000
3900
4320
16000
3760
3390
16000
4390
4440
16000
3900
3200
16000
4050
Outdoor unit current (A)
230V
19.8
20.2
21.9
24.2
22.4
20.3
20.8
22.3
24.1
21.8
19.8
23.8
21.8
19.9
18.2
19.1
17.7
21.2
22.7
23.4
21.2
19.3
24.3
21.2
19.5
17.8
18.7
17.3
22.2
19.5
17.9
16.5
17.3
21.6
23.2
22.7
20.6
18.8
23.8
20.6
19.0
17.4
18.2
16.9
21.6
19.0
17.5
16.9
19.8
17.5
22.1
23.6
22.0
20.1
18.4
23.1
20.1
18.5
17.0
17.8
16.5
21.0
18.5
17.1
16.5
19.3
17.1
17.8
240V
19.0
19.4
21.0
23.1
21.5
19.4
19.9
21.3
23.1
20.9
18.9
22.8
20.9
19.1
17.5
18.3
16.9
20.3
21.7
22.4
20.3
18.5
23.3
20.3
18.6
17.0
17.9
16.5
21.3
18.6
17.2
15.8
16.5
20.7
22.3
21.7
19.8
18.0
22.9
19.8
18.2
16.7
17.5
16.2
20.7
18.2
16.8
16.2
18.9
16.8
21.2
22.6
21.1
19.3
17.6
22.2
19.3
17.7
16.3
17.0
15.8
20.2
17.7
16.4
15.8
18.5
16.4
17.0
220V
20.7
21.1
22.9
25.3
23.5
21.2
21.7
23.3
25.2
22.8
20.7
24.8
22.8
20.8
19.1
20.0
18.5
22.1
23.7
24.4
22.2
20.2
25.4
22.2
20.3
18.6
19.5
18.0
23.2
20.3
18.7
17.3
18.0
22.5
24.3
23.7
21.6
19.7
24.9
21.6
19.8
18.2
19.1
17.7
22.6
19.8
18.3
17.7
20.7
18.3
23.1
24.7
23.0
21.0
19.2
24.2
21.0
19.3
17.8
18.6
17.3
22.0
19.3
17.9
17.3
20.2
17.9
18.6
OC316D--1.qxp
07.8.24 2:11 PM
Page 26
<Heating>
Capacity of each unit (W)
Number of operated indoor unit
6
Unit A
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
25
25
25
25
25
25
Unit B
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Unit C Unit D
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
22
25
22
25
22
25
22
25
22
25
22
35
25
25
25
25
25
25
25
25
25
25
25
25
25
35
35
35
25
25
25
25
25
25
25
25
25
25
25
25
25
35
25
25
25
25
25
25
25
25
25
25
25
25
25
35
Unit E
22
22
22
22
22
22
25
25
25
25
25
35
35
35
25
25
25
25
35
35
35
25
25
25
25
35
35
35
35
25
25
25
25
35
35
35
25
25
25
25
35
35
35
Unit F
22
25
35
50
60
71
25
35
50
60
71
35
50
60
25
35
50
60
35
50
35
25
35
50
60
35
50
35
35
25
35
50
60
35
50
35
25
35
50
60
35
50
35
Unit A
2510
2510
2430
2200
2070
1940
2520
2380
2160
2030
1910
2230
2030
1920
2500
2330
2120
2000
2190
2000
2060
2440
2280
2080
1970
2150
1970
2020
1910
2390
2240
2040
1930
2100
1930
1990
2660
2500
2280
2160
2350
2160
2220
Unit B
2510
2510
2430
2200
2070
1940
2520
2380
2160
2030
1910
2230
2030
1920
2500
2330
2120
2000
2190
2000
2060
2440
2280
2080
1970
2150
1970
2020
1910
2720
2550
2330
2200
2400
2200
2260
2660
2500
2280
2160
2350
2160
2220
Unit C Unit D
2510 2510
2510 2510
2430 2430
2200 2200
2070 2070
1940 1940
2520 2520
2380 2380
2160 2160
2030 2030
1910 1910
2230 2230
2030 2030
1920 1920
2500 2830
2330 2650
2120 2410
2000 2270
2190 2470
2000 2270
2060 3270
2780 2780
2600 2600
2370 2370
2230 2230
2440 2440
2230 2230
2300 3220
3040 3040
2720 2720
2550 2550
2330 2330
2200 2200
2400 2400
2200 2200
2260 3160
2660 2660
2500 2500
2280 2280
2160 2160
2350 2350
2160 2160
2220 3110
26
Unit E
2510
2510
2430
2200
2070
1940
2860
2700
2450
2310
2170
3540
3240
3060
2830
2650
2410
2270
3480
3180
3270
2780
2600
2370
2230
3410
3130
3220
3040
2720
2550
2330
2200
3350
3080
3160
2660
2500
2280
2160
3290
3030
3110
Total
rated Outdoor unit Outdoor unit current (A)
capacity input (W)
(W)
Unit F
230V
240V
220V
2510 15100
5290
23.2
22.3
24.3
2850 15400
5380
23.6
22.6
24.7
3850 16000
5270
23.1
22.2
24.2
5000 16000
4580
20.1
19.3
21.0
5650 16000
4210
18.5
17.7
19.3
6280 16000
3870
17.0
16.3
17.8
2860 15800
5500
24.2
23.1
25.3
3780 16000
5110
22.4
21.5
23.5
4910 16000
4460
19.6
18.8
20.5
5550 16000
4120
18.1
17.3
18.9
6170 16000
3790
16.6
16.0
17.4
3540 16000
4660
20.5
19.6
21.4
4620 16000
4120
18.1
17.3
18.9
5250 16000
3820
16.8
16.1
17.5
2830 16000
5480
24.1
23.1
25.2
3710 16000
4970
21.8
20.9
22.8
4820 16000
4350
19.1
18.3
20.0
5450 16000
4020
17.7
16.9
18.5
3480 16000
4540
19.9
19.1
20.8
4550 16000
4020
17.7
16.9
18.5
3270 16000
4180
18.4
17.6
19.2
2780 16000
5320
23.4
22.4
24.4
3640 16000
4830
21.2
20.3
22.2
4730 16000
4250
18.7
17.9
19.5
5360 16000
3930
17.3
16.5
18.0
3410 16000
4430
19.5
18.6
20.3
4470 16000
3930
17.3
16.5
18.0
3220 16000
4080
17.9
17.2
18.7
3040 16000
3790
16.6
16.0
17.4
2720 16000
5160
22.7
21.7
23.7
3560 16000
4700
20.6
19.8
21.6
4640 16000
4150
18.2
17.5
19.1
5270 16000
3850
16.9
16.2
17.7
3350 16000
4320
19.0
18.2
19.8
4390 16000
3850
16.9
16.2
17.7
3160 16000
3990
17.5
16.8
18.3
2660 16000
5020
22.0
21.1
23.0
3500 16000
4580
20.1
19.3
21.0
4570 16000
4050
17.8
17.0
18.6
5190 16000
3760
16.5
15.8
17.3
3290 16000
4210
18.5
17.7
19.3
4320 16000
3760
16.5
15.8
17.3
3110 16000
3900
17.1
16.4
17.9
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07.8.24 2:11 PM
Page 27
<Heating>
Number of operated indoor unit
Unit A
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
25
25
7
Unit B Unit C Unit D Unit E
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 22
22 22 22 25
22 22 22 25
22 22 22 25
22 22 25 25
22 22 25 25
22 25 25 25
22 25 25 25
25 25 25 25
25 25 25 25
25 25 25 25
25 25 25 25
Total
rated Outdoor unit
capacity input (W)
Unit F Unit G Unit A Unit B Unit C Unit D Unit E Unit F Unit G (W)
22 22 2280 2280 2280 2280 2280 2280 2280 16000
4830
22 25 2240 2240 2240 2240 2240 2240 2550 16000
4700
22 35 2110 2110 2110 2110 2110 2110 3340 16000
4320
22 50 1930 1930 1930 1930 1930 1930 4400 16000
3850
25 25 2200 2200 2200 2200 2200 2500 2500 16000
4580
25 35 2070 2070 2070 2070 2070 2350 3290 16000
4210
25 50 1900 1900 1900 1900 1900 2160 4320 16000
3760
35 35 1960 1960 1960 1960 1960 3100 3100 16000
3900
25 25 2160 2160 2160 2160 2450 2450 2450 16000
4460
25 35 2030 2030 2030 2030 2310 2310 3240 16000
4120
35 35 1920 1920 1920 1920 2190 3060 3060 16000
3820
25 25 2120 2120 2120 2410 2410 2410 2410 16000
4350
25 35 2000 2000 2000 2270 2270 2270 3180 16000
4020
25 25 2070 2070 2370 2370 2370 2370 2370 16000
4250
25 35 1970 1970 2230 2230 2230 2230 3130 16000
3930
25 25 2050 2320 2320 2320 2320 2320 2320 16000
4150
25 35 1930 2200 2200 2200 2200 2200 3070 16000
3850
25 25 2280 2280 2280 2280 2280 2280 2280 16000
4050
25 35 2160 2160 2160 2160 2160 2160 3030 16000
3760
Capacity of each unit (W)
Outdoor unit current (A)
230V
21.2
20.6
19.0
16.9
20.1
18.5
16.5
17.1
19.6
18.1
16.8
19.1
17.7
18.7
17.3
18.2
16.9
17.8
16.5
240V
20.3
19.8
18.2
16.2
19.3
17.7
15.8
16.4
18.8
17.3
16.1
18.3
16.9
17.9
16.5
17.5
16.2
17.0
15.8
220V
22.2
21.6
19.8
17.7
21.0
19.3
17.3
17.9
20.5
18.9
17.5
20.0
18.5
19.5
18.0
19.1
17.7
18.6
17.3
<Heating>
Total
rated Outdoor unit
capacity input (W)
Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H (W)
22 22 22 22 22 22 22
22
2000 2000 2000 2000 2000 2000 2000 2000 16000
4020
22 22 22 22 22 22 22
25
1960 1960 1960 1960 1960 1960 1960 2230 16000
3930
22 22 22 22 22 22 25
25
1930 1930 1930 1930 1930 1930 2200 2200 16000
3850
22 22 22 22 22 25 25
25
1900 1900 1900 1900 1900 2160 2160 2160 16000
3760
Capacity of each unit (W)
Number of operated indoor unit
8
27
Outdoor unit current (A)
230V
17.7
17.3
16.9
16.5
240V
16.9
16.5
16.2
15.8
220V
18.5
18.0
17.7
17.3
OC316D--1.qxp
07.8.24 2:11 PM
Page 28
5-2. CORRECTING COOLING AND HEATING CAPACITY
5-2-1. Correcting Changes in Air Conditions
(1)The performance curve charts (Figure 1-1, 1-2, 2-1, 2-2) show the change ratio of capacity and input (power consumption)
according to the indoor and outdoor temperature condition when define the rated capacity (total capacity) and rated input
under the standard condition in standard piping length (5m) as “1.0”.
• Standard conditions:
Indoor D.B. 27°C / W.B. 19°C
Rated cooling capacity
Outdoor D.B. 35°C
Indoor D.B. 20°C
Rated heating capacity
Outdoor D.B. 7°C / W.B. 6°C
• Use the rated capacity and rated power values given in the characteristics table for each indoor unit.
• The capacity is the single value on the side of the outdoor unit;
The capacity on the sides of each indoor unit must be added to obtain the total capacity.
(2)The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the
individual capacity at the rated time and the total capacity at the rated time.
Individual capacity under stated conditions =Total capacity under the stated conditions o
Individual capacity at the rated time
Total capacity at the rated time
(3) Capacity correction factor curve
Fig.1-1
Cooling capacity
Fig.1-2
Cooling input
1.4
1.2
22 20
18
16
1.2
22
1
20
18
0.8
16
Cooling input ratio
Cooling capacity ratio
Indoor intake air wet-bulb temperature <:W.B.>
1.0
0.8
0.6
Indoor intake air wet-bulb temperature <:W.B.>
0.6
–5
0
5
10
15
20
25
30
35
40
46
0.4
0
5
10
15
20
25
30
35
40
Outdoor intake air dry-bulb temperature <:D.B. >
Outdoor intake air dry-bulb temperature <:D.B. >
Fig.2-1
Heating capacity
–5
Fig.2-2
Heating input
Indoor intake air dry-bulb temperature <:D.B.>
Indoor intake air dry-bulb temperature <:D.B.>
Outdoor intake air wet-bulb temperature <:W.B.>
Outdoor intake air wet-bulb temperature <:W.B.>
Note : These diagrams show the case where the operation frequency of a compressor is fixed.
28
46
OC316D--1.qxp
07.8.24 2:11 PM
Page 29
5-2-2. Correcting Capacity for Changes in the Length of Refrigerant Piping
To obtain the ratio (and the corrected piping length) of the outdoor units rated capacity and the total in-use indoor capacity, first
find the capacity ratio corresponding to the standard piping length from Fig.3, Fig.4 and then multiply by the capacity from
Fig.1-1, 1-2, Fig.2-1, 2-2 to obtain the actual capacity.
(1) Capacity correction factor
Fig.3 Cooling capacity correction curve
20
40
60
80
1.00
0.95
Total rated capacity of indoor units (kW)
0.90
2.2(15.7%)
7.0 (50%)
10.5 (75%)
14.0 (100%)
18.5 (132%)
Cooling
0.85
Capacity
(ratio)
0.80
[%]
0.75
0.70
0.65
20
40
60
80
Corrected piping length (m)
Fig.4 Heating capacity correction curve
1
Heating
Capacity
(ratio)
[%]
0.95
0.9
20
40
60
80
Corrected piping length (m)
(2) Method for Obtaining the Corrected Piping Length
Corrected piping length = (Actual piping length between outdoor unit and the farthest indoor unit) + (0.30 o number of bends in the
piping) (m)
29
OC316D--1.qxp
07.8.24 2:11 PM
Page 30
5-3. NOISE CRITERION CURVES
MICROPHONE
1m
UNIT
1.5m
GROUND
MXZ-8A140VA
MXZ-8A140VA1
MXZ-8A140VA2
MXZ-8A140VA3
MODE SPL(dB)
COOLING
50
HEATING
52
LINE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
NC-20
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
30
OC316D--2.qxp
07.8.24 2:09 PM
OUTLINES AND DIMENSIONS
6-1. OUTDOOR UNIT
MXZ-8A140VA MXZ-8A140VA1
Over
Over
10
er
Ov
Ov
er
m
0m
0
10
Service space
10
mm
<Foundation bolt height>
FOUNDATION
Over
500
Rear Air Intake
175
600
2-U Shaped notched holes
(Foundation Bolt M10)
175
19
0m
15
4 PIPING-WIRING DIRECTIONS
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
Less than
er
Ov
3 FOUNDATION BOLTS
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be
purchased locally.)
30
mm
Over
, , ,, ,, , ,, ,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,
,, ,, ,,,, ,, ,,,
,,,,,,,,
,,,,,
,
,,,,,,,
,
,,,,,,,
,, ,, ,,,, ,,
,
,,,,,
,, , ,, ,
,
,
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,
,,,,,,,,,,,,,,,,
,,,,,
,
,
,
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,
,
,
,
,
,
,
,
,,,,
,,,,,,,,,,,,,,,,,,,
,
,
,,,,,,,,,,,,,,,
,,,,,,
,, ,, ,,,, ,
,
m
10
150
Dimensions of space needed
for service access are
shown in the below diagram.
FREE
er
MXZ-8A140VA2
2 SERVICE SPACE
1 FREE SPACE (Around the unit)
The diagram below shows a basic
example.
Explanation of particular details are
given in the installation manuals etc.
Ov
unit : mm
500
6
Page 31
Installation Feet
417
56
370
37
56
Air Discharge
42
53
28
30
,,
,,
1···Refrigerant GAS pipe connection (FLARE)[15.88(5/8 inch)
2···Refrigerant LIQUID pipe connection (FLARE)[9.52(3/8 inch)
Indication of STOP VALVE connection location
,,,,
,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,
,,,
,,,,, ,,,
,,,,,
,,,,,,,,,
,,,
,,,,,,,,
,,
330
Side Air Intake
Example of Notes
2-12 o 36 Oval holes
(Foundation Bolt M10)
950
Rear Air Intake
Handle for moving
322
Earth terminal
Side Air Intake
Terminal connection
Left····Power supply wiring
Right··Indoor/Outdoor wiring
Handle for moving
*1 507
1
371
Air intake
*1 423
,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,
, ,, , , , , ,, , , , , ,, , , ,, , ,, , , ,, , ,, , , ,, , , , ,
Handle for moving
1079
1350
Handle for moving
Handle for moving
635
Service panel
23
2
Front piping cover
71
71
Rear piping cover
81
219
Bottom piping hole
(Knockout)
Piping Knockout Hole Details
65
19
55
92
73 63
63
[92
23
92
23 27 92
73
55
73 63
27
Front piping hole
(Knockout)
23
[92
45
40
40
55
75
220
92
65
31
145
Power supply wiring hole
(2-[27Knockout)
Rear trunking hole
(Knockout)
[92
27
Power supply wiring hole
(2-[27Knockout)
Front trunking hole
40
45
(Knockout)
30
Power supply wiring hole
(2-[27Knockout)
Right trunking hole
(Knockout)
Right piping hole
(Knockout)
Rear piping hole
(Knockout)
145
145
Drain hole
(5-[33)
OC316D--2.qxp
07.8.24 2:09 PM
Page 32
unit : mm
MXZ-8A140VA3
2 SERVICE SPACE
Over
0m
15
Over
10
er
Ov
Ov
er
mm
00
10
Service space
10
mm
4 PIPING-WIRING DIRECTIONS
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
<Foundation bolt height>
FOUNDATION
Over
500
Rear Air Intake
175
600
2-U Shaped notched holes
(Foundation Bolt M10)
175
19
er
Ov
3 FOUNDATION BOLTS
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be
purchased locally.)
Less than
mm
500
m
10
Over
er
, , ,, ,, , ,, ,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,
,, ,, ,,,, ,, ,,,
,,,,,,,,
,,,,,
,
,,,,,,,
,
,,,,,,,
,
,
,
,
,
,
,
,, ,,,,,,, ,,,,
,,,,,
,
,
,
,
,
,
,
,
,, ,,,,,,, ,,,,,
,,,,,,,
,,,,,,,,,,,,,,,,
,,,,,
,
,
,
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,
,
,
,
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,
,,,,,,,,,,,,,,,
,
,, ,, ,,,, ,
,,,,
FREE
Ov
150
Dimensions of space needed
for service access are
shown in the below diagram.
30
1 FREE SPACE (Around the unit)
The diagram below shows a basic
example.
Explanation of particular details are
given in the installation manuals etc.
Installation Feet
56
Air Discharge
42
417
56
370
53
28
30
,,
,,
1···Refrigerant GAS pipe connection (FLARE)[15.88(5/8 inch)
2···Refrigerant LIQUID pipe connection (FLARE)[9.52(3/8 inch)
Indication of STOP VALVE connection location
37
Example of Notes
,,,,
,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,
,,,
,,,,, ,,,
,,,,,
,,,,,,,,,
,,,
,,,,,,,,
,,
330
Side Air Intake
2-12 o 36 Oval holes
(Foundation Bolt M10)
950
Rear Air Intake
Handle for moving
322
Earth terminal
Side Air Intake
Terminal connection
Left····Power supply wiring
Right··Indoor/Outdoor wiring
Handle for moving
*1 507
1
371
Air intake
*1 423
,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,
, ,, , , , , ,, , , , , ,, , , ,, , ,, , , ,, , ,, , , ,, , , , ,
Handle for moving
1079
1350
Handle for moving
Handle for moving
635
Service panel
23
2
Front piping cover
71
71
Rear piping cover
81
219
Bottom piping hole
(Knockout)
Piping Knockout Hole Details
65
19
55
92
73 63
63
[92
23
92
23 27 92
73
55
73 63
27
Front piping hole
(Knockout)
23
[92
45
40
220
145
Power supply wiring hole
(2-[27Knockout)
Rear trunking hole
(Knockout)
40
55
75
[92
27
Power supply wiring hole
(2-[27Knockout)
Front trunking hole
40
45
(Knockout)
30
Power supply wiring hole
(2-[27Knockout)
Right trunking hole
(Knockout)
Right piping hole
(Knockout)
Rear piping hole
(Knockout)
92
65
32
145
145
Drain hole
(5-[33)
OC316D--2.qxp
07.8.24 2:09 PM
Page 33
unit : mm
6-2. BRANCH BOX UNIT
PAC-AK50BC
SUSPENSION BOLT PITCH
320
SUSPENSION BOLT : W3/8 (M10)
REFRIGERANT PIPE FLARED CONNECTION (inch)
C
D
E
1/4
1/4
1/4
1/4
3/8
GAS PIPE
3/8
3/8
3/8
1/2
5/8
3/8
24
402
DRAIN HOSE SIZE : O.D. 20 (VP-16)
SUSPENSION BOLT PITCH
A
TO OUTDOOR UNIT
B
LIQUID PIPE 1/4
12
450
91
95
73
55
280
61
79
50
39
3-ELECTRIC WIRE INLET
34
TERMINAL BLOCK
TO INDOOR UNIT
25
25
25
25
35
25
TB2B
68
A
TB3A
B
TB3B
65
A
C
TB3D
198
B
C
D
TB3C
D
E
TB3E
E
70
39
TO INDOOR UNIT
3-WIRE BAND
75
75
75
21
TO OUTDOOR UNIT
200
75
TERMINAL BLOCK
TO OUTDOOR UNIT
SERVICE PANEL
(for LEV, THERMISTOR)
[20
23
FLEXIBLE DRAIN HOSE
(ACCESSORY)
ELECTRIC COVER
DRAIN PIPE CONNECTION
(VP-16)
PAC-AK30BC
SUSPENSION BOLT PITCH
320
SUSPENSION BOLT : W3/8 (M10)
REFRIGERANT PIPE FLARED CONNECTION (inch)
C
1/4
1/4
3/8
GAS PIPE
3/8
3/8
5/8
3/8
SUSPENSION BOLT PITCH
A
TO OUTDOOR UNIT
B
LIQUID PIPE 1/4
24
402
DRAIN HOSE SIZE : O.D. 20 (VP-16)
12
450
280
95
91
73
205
61
79
50
39
3-ELECTRIC WIRE INLET
34
TERMINAL BLOCK
TO INDOOR UNIT
35
25
68
25
3-WIRE BAND
75
75
21
TO OUTDOOR UNIT
200
SERVICE PANEL
(for LEV, THERMISTOR)
23
FLEXIBLE DRAIN HOSE
(ACCESSORY)
[20
65
198
25
TB3A
A
TB3B
B
TB2B
C
TB3C
A
B
C
70
39
TO INDOOR UNIT
DRAIN PIPE CONNECTION
(VP-16)
33
ELECTRIC COVER
TERMINAL BLOCK
TO OUTDOOR UNIT
34
BLK
WHT
MF2
MF1
RED
WHT
BLK
52C
SCR-P1
SCR-N1
LED1
RS
1
3
1
3
21S4
BLK
DCL
ACTM
RED
N1
N2
WHT
I
P
654321
RED
SCR-P2
SCR-N2
N
BLU
SW6
21
CN5
NI
BRANCH
BOX
S1 S2 S3
YLW ORN
SYMBOL
TB1
MC
MF1, MF2
21S4
SV1
SV2
63HS
63H
63L
TH3
TH4
TH6
TH7
TH8
DCL
52C
RS
ACTM
CE
P. B
U/V/W
BRN
CNAC1
(WHT)
3 1 LI
(RED)
GRN
/YLW
CNAC2
(RED)
3 1
L0 N0
N. F.
POWER SUPPLY
~/N
220/230/240V 50Hz
220V 60Hz
L
RED
NO FUSE
BREAKER
40 A
CE
BLU
RED
MC
TB1
SV1
P. B.
SV2
SCR-S
SCR-R
WHT
W
V
U
654321 7654321
CNAF
CN2
(WHT )
(WHT )
3 CNDC
(PNK)
RED
CN4
(WHT )
21
SW4 SW8 SW5
7SEG LED
88
52C 21S4 SV2
SV1
SS
FUSE4 (BLK) (GRN) (BLU) (GRY) (WHT)
3 1 3 1 3 1 3 1 3 1
FUSE3
CN2
(WHT )
7654321
CNIT
(RED)
123
12345
12
63L
1
12
63H
63L
TH7/6 TH3 TH4 63HS 63H
(RED) (WHT) (WHT)(WHT) (YLW) (RED)
1234
CNAC
(WHT)
12
34
IGBT
21
21
21
CN5 CN3 CN4
(RED) (WHT) (WHT)
TH8
CNS
(WHT) FUSE1
321
FUSE2
4 5 6 7 CNF2
(WHT)
4 5 6 7 CNF1
(WHT)
CNDC
(PNK)
3 1
1
1
C. B.
TH7TH6 TH3 TH4 63HS
L1
SW7
CN31 SW1
CN3S
(WHT )
321
CN51 CNDM SW10 SW2 SW9
(WHT ) (WHT )
54321 321
NAME
SYMBOL
NAME
Screw Type Terminal (L / N - Phase)
Screw Type Terminal (DC Voltage)
Screw Type Terminal (DC Voltage)
Connector
Connector
Connector
Converter, Inverter
Light Emitting Diodes (Inverter Control Status)
Noise Filter Circuit Board
Connection Lead (L - Phase)
Connection Lead (N - Phase)
Connection Terminal (Ground)
Connector
Connector
Controller Circuit Board
Fuse (6. 3A)
Switch (Forced Defrost, Error History
Record Reset)
Switch (Self Diagnosis Switch)
Switch (Test Operation )
Switch (Function Switch)
NAME
U5
U8
U9
PA
U1
UL
U6
UF
UH
UP
U3
U4
Operation status display,
such as C5. H7
F3
F9
EA, Eb, EC
E6~E9
E0, E3~E5
EE, EF
Ed
U2
U7
(blinks)
Code
Switch (Model Select)
Switch (Function Setup)
Switch
Switch (Function for option)
Switch (Function for option)
Connector
Light Emitting Diodes
(Operation Inspection Indicators)
Connector
Connector
Connector
Connector
Connector
Connector (Connection for Option)
Connector
Connector
Connector (Connection for Option)
Connector <Connected for Option
(Contact Input)>
Connector (Connection for Option)
Connector (Connection for Option)
WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx.2 minutes
(input voltage : 240 V). When servicing, make sure that LED on the outdoor circuit board gose out, and then wait for at least 1 minute.
● Components other than the outdoor board may be faulty : Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.
●
Details
CN51
CNIT
CNAC
CNDC
CNS
CNF1
CNF2
SS
SV1
SV2
CN3S
CNDM
SW6
SW7
SW8
SW9
SW10
CN31
LED
SYMBOL
Connector (63H) open, connector (63L) open
At Ieast 2 connectors open
Incorrect wiring in indoor / outdoor unit connection
Indoor / outdoor unit communication error
Remote controller communication error
Combination error, undefined error
Serial communication error
Discharge temperature fault
Low-discharge superheating fault, Erroneous connection of refrigerant pipes or
the connecting wires
High pressure fault (63H operates)
Low pressure fault (63L operates)
Abnormality of power modules
Compressor overcurrent shutoff (Start up locked)
Current sensor fault (P. B.)
Compressor overcurrent shutoff fault
Discharge pipe/compressor thermistor (TH4) open or short-circuit
Outdoor unit thermistors (TH3, TH6, TH7, and TH8), 63HS, and branch box
thermistors open or short-circuit
Heatsink temperature fault
Abnormality in outdoor fan motor
Voltage fault, current sensor fault (N. F.)
Forced compressor stop
(Overlap malfunction of drain pump in indoor unit
and linear expansion valve in branch box)
Cautions when Servicing
Faulty status
(blinking)
Normal status
Power turned on
LED on the controller board display the operation and inspection status as follows.
If LED does not light, it indicates that no power is supplied to the board:
Operation / Inspection Display
SC - R / S
Terminal Block (Power Supply, Branch)
Motor for Compressor
SC - P1, P2
Fan Motors
SC - N1, N2
Solenoid Valve (Four-Way Valve)
CN2 ~ 5
Solenoid Valve (Hot Gas Bypass)
CNDC
Solenoid Valve (Returning oil Bypass )
CNAF
High pressure Sensor
IGBT
High pressure Switch
LED1
N. F.
Low pressure Switch
LI / LO
Thermistor (Outdoor Pipe)
NI / NO
Thermistor (Discharge)
EI
Thermistor (Outdoor2 - Phase Pipe)
CNAC1 / 2
Thermistor (Outdoor)
Thermistor (Heatsink)
CN5
C. B.
Reactor
FUSE1 ~ 4
52C Relay
Rush Current Protect Resistor
SW1
Active Filter Module
Main Smoothing Capacitor
SW2
Power Circuit Board
SW4
Connection Terminal (U / V / W - Phase)
SW5
7
L2
07.8.24 2:09 PM
EI
OC316D--2.qxp
Page 34
WIRING DIAGRAM
7-1. OUTDOOR UNIT
MXZ-8A140VA
MF2
TABT
BLK
52C
TABN1
TABS
TABP1
LED1
1
3
BLK
CN2
(WHT)
7654321
CN4
(WHT)
21
DCL
ACTM
BLK
WHT
RED
SV2
RED
N1
N2
WHT
I
P
654321
CE
TABN TABP
WHT
RED
TABN2
TABP2
W
V
U
654321 7654321
CNAF
CN2
(WHT)
(WHT)
21S4
TB1
L
N
CNAC2
(RED)
3 1
L0 N0
N. F.
POWER SUPPLY
~/N
220/230/240V 50Hz
220V 60Hz
NO FUSE
BREAKER
40 A
MC
P. B.
SV1
SW4 SW8 SW5
7SEG LED
88
52C 21S4 SV2
SV1
SS
FUSE4 (BLK) (GRN) (BLU) (GRY) (WHT)
3 1 3 1 3 1 3 1 3 1
FUSE3
3 CNDC
(PNK)
IPM
1
3
CNIT
(RED)
123
TH7/6 TH3 TH4 63HS 63H
63L
(RED) (WHT)(WHT)(WHT) (YLW) (RED)
12
63L
12345
12
63H
1
1234
CNAC
(WHT)
12
34
RS
21
21
21
CN5 CN3 CN4
(RED)(WHT)(WHT)
TH8
CNS
(WHT) FUSE1
321
FUSE2
4 5 6 7 CNF2
(WHT)
4 5 6 7 CNF1
(WHT)
CNDC
(PNK)
3 1
1
BLU
MF1
1
C. B.
WHT
TH7TH6 TH3 TH4 63HS
L1
35
L2
SW6
CN31 SW1
SW7
NI
BRANCH
BOX
S1 S2 S3
CNAC1
(WHT)
3 1 LI
21
CN5
(RED)
CN3S
(WHT)
321
SW9
SW10 SW2
CN51 CNDM
(WHT) (WHT)
54321 321
SYMBOL
TB1
MC
MF1, MF2
21S4
SV1
SV2
63HS
63H
63L
TH3
TH4
TH6
TH7
TH8
DCL
52C
RS
ACTM
CE
P. B
U/V/W
NAME
SYMBOL
NAME
Terminal (L / N - Phase)
Terminal (DC Voltage)
Terminal (DC Voltage)
Connector
Connector
Connector
Inverter
Light Emitting Diodes (Inverter Control Status)
Noise Filter Circuit Board
Connection Lead (L - Phase)
Connection Lead (N - Phase)
Connection Terminal (Ground)
Connector
Connector
Controller Circuit Board
Fuse (6.3A)
Switch (Forced Defrost, Error History
Record Reset)
Switch (Self Diagnosis Switch)
Switch (Test Operation )
Switch (Function Switch)
CN51
CNIT
CNAC
CNDC
CNS
CNF1
CNF2
SS
SV1
SV2
CN3S
CNDM
SW6
SW7
SW8
SW9
SW10
CN31
LED
NAME
(blinks)
Code
Switch (Model Select)
Switch (Function Setup)
Switch
Switch (Function for option)
Switch (Function for option)
Connector
Light Emitting Diodes
(Operation Inspection Indicators)
Connector
Connector
Connector
Connector
Connector
Connector (Connection for Option)
Connector
Connector
Connector (Connection for Option)
Connector <Connected for Option
(Contact Input)>
Connector (Connection for Option)
Connector (Connection for Option)
WARNING: When the main supply is turned off, the voltage[340 V]in the main capacitor will drop to 20 V in approx.2 minutes
(input voltage : 240 V). When servicing, make sure that LED on the outdoor circuit board gose out, and then wait for at least 1 minute.
Components other than the outdoor board may be faulty : Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.
U5
U8
U9
PA
U1
UL
U6
UF
UH
UP
U3
U4
Eb
Ec
E0 E7
EE, EF
Ed
U2
U7
EA
E9
Operation status display,
such as C5. H7
F3
F5
F9
E8
SYMBOL
63L connector (red) is open.
63H connector (yellow) is open.
2 connectors (63H/63L) are open.
Branch box/outdoor communication error (Signal receiving error) (Outdoor unit)
Indoor/branch box communication error (Signal receiving error) (Branch box)
Branch box/outdoor communication error (Transmitting error) (Outdoor unit)
Indoor/branch box communication error (Transmitting error) (Branch box)
Miswiring of indoor-branch box / branch box-outdoor unit connecting wire.
Too many indoor units / branch box are in the system.
Miswiring of indoor-branch box/branch box-outdoor unit connecting wire (converse wiring or disconnection)
Startup time over
Communication error except for outdoor unit
Combination error, undefined error
Serial communication error
Discharge temperature fault
Low-discharge superheating fault, Erroneous connection of refrigerant pipes or
the connecting wires
High pressure fault (63H operates)
Low pressure fault (63L operates)
Abnormality of power modules
Compressor overcurrent shutoff (Start up locked)
Current sensor fault (P. B.)
Compressor overcurrent shutoff fault
Discharge pipe/compressor thermistor (TH4) open or short-circuit
Outdoor unit thermistors (TH3, TH6, TH7, and TH8), 63HS, and branch box
thermistors open or short-circuit
Heatsink temperature fault
Abnormality in outdoor fan motor
Voltage fault, current sensor fault (N. F.)
Forced compressor stop
(Overlap malfunction of drain pump in indoor unit
and linear expansion valve in branch box)
Cautions when Servicing
Faulty status
(blinking)
Normal status
Power turned on
LED on the controller board display the operation and inspection status as follows.
If LED does not light, it indicates that no power is supplied to the board:
Details
Operation / Inspection Display
Terminal Block (Power Supply, Branch) TAB - S / T
Motor for Compressor
TAB-P/P1/P2
Fan Motors
TAB-N/N1/N2
Solenoid Valve (Four-Way Valve)
CN2 ~ 5
Solenoid Valve (Hot Gas Bypass)
CNDC
Solenoid Valve (Returning oil Bypass)
CNAF
High pressure Sensor
IPM
High pressure Switch
LED1
N. F.
Low pressure Switch
LI / LO
Thermistor (Outdoor Pipe)
NI / NO
Thermistor (Discharge)
EI
Thermistor (Outdoor2 - Phase Pipe)
CNAC1 / 2
Thermistor (Outdoor)
Thermistor (Heatsink)
CN5
C. B.
Reactor
FUSE1 ~ 4
52C Relay
Rush Current Protect Resistor
SW1
Active Filter Module
Main Smoothing Capacitor
SW2
Power Circuit Board
SW4
Connection Terminal (U / V / W - Phase) SW5
07.8.24 2:09 PM
EI
OC316D--2.qxp
Page 35
MXZ-8A140VA1 MXZ-8A140VA2
CB
RED
WHT
2
t° 2
TH8
7
4
3
CNS
(WHT)
2
1
F1
F2
CNDC
(PNK)
CNF2
(WHT)
TABP
7
1 CN3
2 (WHT)
1 CN5
2 (RED)
1 CN4
2 (WHT)
TABN
CN2
(WHT)
6
1
CNAF
(WHT)
1
P. B.
1
3
7
IPM
3
BLK
RED
DCL
U
4
CNAC
(WHT)
2
1
TRANS
TABP2
RED
1
RED TABU
MF2
MS
3~
t°
t°
L2
4
3
MODEL
MC
W
7
1
7
P
6
SW6
WHT
ON
OFF
DS2
RED
2
21S4
DS3
3
1 3
63H
(YLW)
63H
12345678
Io
N1
N2
U
1 3
63L
(RED)
CNDC
(PNK) 2
1
F4
F3
MXZ-8A140VA
ACTM
L1
MS
3~
V
1
CN2
(WHT)
4 1 2 2 1 1 3
1
TH7/6 TH3 TH4 63HS
(RED) (WHT) (WHT) (WHT)
BLK
TABW
CNF1
(WHT)
t°
BLK
MF1
MS
3~
t°
TABV
WHT
7
BLK
1
WHT
CN4
(WHT)
1 2
SV2
1
1 SV2 3
(BLU)
CNIT
(RED)
SV1
CNM
(WHT)
1
L
5
14
1 SV1 3
(GRY)
2
CN52C
(RED)
1 2
N
POWER SUPPLY
~/N
220/230/240V 50Hz
220V 60Hz
NO FUSE
BREAKER
40 A
TABP1 RED
TABS WHT
TABT BLU
1 21S4 3
(GRN)
X52
C. B.
TABN1
X55
63L
WHT TABN2
X54
63HS
RED
SW5
1
3
1
3
CN31
S2
U
5
3
1
3
1
1
NI
NO
BLU
U
S3 TB1
BRANCH BOX
S1
LI
LO
WHT
1 SS
(WHT)
LED1
CN51 CNDM CN3S
(WHT) (WHT) (WHT)
52C
TH7 TH6 TH3 TH4
BLU
X51
GRN / YLW
SW7
SW9
SW2
SW6
SW1
ORN
SW8
SW4
CNAC2
(RED)
CNAC1
(WHT)
YLW
36
BRN
SYMBOL
2
1
N. F.
2
1
E2
EI
2
MC
MF1, MF2
21S4
63H
63L
63HS
SV1,SV2
TH3
TH4
TH6
TH7
TH8
DCL
ACTM
CB
TB1
CN52C
(BLK)
NAME
SYMBOL
2
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)
Switch (Self Diagnosis Switch)
Switch (Test Operation )
63L connector (red) is open.
63H connector (yellow) is open.
2 connectors (63H/63L) are open.
Branch box/outdoor communication error (Signal receiving error)(Outdoor unit)
Indoor/branch box communication error (Signal receiving error)(Branch box)
Branch box/outdoor communication error (Transmitting error)(Outdoor unit)
Indoor/branch box communication error (Transmitting error)(Branch box)
· Miswiring of indoor-branch box / branch box-outdoor unit connecting wire.
· Too many indoor units / branch box are in the system.
Miswiring of indoor-branch box/branch box-outdoor unit connecting wire (converse wiring or disconnection)
Startup time over
Communication error except for outdoor unit
Combination errer, undefined error
Serial communication error
Discharge temperature fault
Low-discharge superheating fault, Erroneous connection of refrigerant pipes or
the connecting wires
High pressure fault (63H operates)
Low pressure fault (63L operates)
Abnormality of power modules
Compressor over current shutoff (Start up locked)
Current sensor fault (P. B.)
Compressor overcurrent shutoff fault
Discharge pipe/compressor thermistor (TH4) open or short-circuit
Outdoor unit thermistors (TH3, TH6, TH7, and TH8), 63HS, and branch dox
thermistors open or short-circuit
Heatsink temperature fault
Abnormality in outdoor fan motor
Voltage fault, current sensor fault (N. F.)
Forced compressor stop
(Overlap malfunction of drain pump in indoor unit
and linear expansion valve in branch box)
Cautions when Servicing
NAME
U5
U8
U9
PA
U1
UL
U6
UF
UH
UP
U3
U4
Eb
Ec
E0 - E7
EE, EF
Ed
U2
U7
EA
E9
Operation status display,
such as C5. H7
F3
F5
F9
E8
(blinks)
Code
Switch (Function Switch)
Switch (Model Select)
Switch (Function Setup)
Switch (Function Setup)
Switch (Function Setup)
Connector
Connector(Connection for Option)
Connector(Connection for Option)
Connector(Connection for Option)
Connector(Connection for Option)
Connector<Connected for Option
(Contact Input)>
Light Emitting Diode
LED
(Operation Inspection Indicators)
F1 ~ F4
Fuse (T6.3AL250V)
X51 ~ X55 Relay
SW5
SW6
SW7
SW8
SW9
CN31
CN51
SS
CN3S
CNIT
CNDM
SYMBOL
WARNING:When the main supply is turned off, the voltage[340 V]in the main capacitor will drop to 20 V in approx.2 minutes
(input voltage : 240 V). When servicing, make sure that LED on the outdoor circuit board goes out, and then wait for at least
1 minute.
• Components other than the outdoor board may be faulty : Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.
•
Faulty status
(blinking)
Normal status
Power turned on
LED on the controller board display the operation and inspection status as follows.
If LED does not light, it indicates that no power is supplied to the board:
Details
Operation / Inspection Display
P. B.
Terminal Block
(Power Supply, Branch Box)
TABU / V / W
Motor for Compressor
TABS / T
TABP1/P2/P
Fan Motors
Solenoid Valve (Four-Way Valve)
TABN1/N2/N
High Pressure Switch
DS2, DS3
Low Pressure Switch
IPM
High Pressure Sensor
N. F.
Solenoid Valve (Bypass Valve )
LI / LO
Thermistor(Outdoor Pipe)
NI / NO
Thermistor(Discharge)
EI, E2
Thermistor(Outdoor 2 - Phase Pipe)
52C
Thermistor(Outdoor)
C. B.
Thermistor(Radiator Panel)
SW1
Reactor
Active Filter Module
SW2
Main Smoothing Capacitor
SW4
07.8.24 2:09 PM
CN5
(RED)
OC316D--2.qxp
Page 36
MXZ-8A140VA3
OC316D--2.qxp
07.8.24 2:09 PM
Page 37
7-2. BRANCH BOX : PAC-AK50BC PAC-AK30BC
Note : " PAC - AK30 . 50BC " is only for R410A.
SYMBOL
B.C
F1 <B.C>
SW1<B.C>
CNM<B.C>
LED1~5< B.C>
LEV-A~E
TH-A~E
NAME
Branch box controller board
Fuse 250V 6.3A
Switch for service
Connector
Light emitting diode
Linear expansion valve
Thermistor
Pipe temp.detection / Gas
(0 : / 15k', 25 : / 5.4k')
Terminal block / To outdoor unit
Terminal block / To indoor unit - A
Terminal block / To indoor unit - B
Terminal block / To indoor unit - C
Terminal block / To indoor unit - D
Terminal block / To indoor unit - E
TB2B
TB3A
TB3B
TB3C
TB3D
TB3E
Note
1. At servicing for outdoor unit, always follow the wiring diagram of Outdoor unit.
2. Symbols used in wiring diagram above are,
: terminal block,
: connector.
(Combination of indoor units)
Fill out the location of combined indoor units with model name in each
blank below because it is necessary for service and maintenance.
Indoor unit - A Indoor unit - B Indoor unit - C Indoor unit - D Indoor unit - E
WSetup of SW1
Make it the same setup as former
one when exchanging PCB.
(PAC - AK50BC only)
TB3E
YLW
S1
TO INDOOR
ORN
S2
UNIT -E
S3 BRN
TB3D
(PAC - AK50BC only)
S1 YLW
TO INDOOR
S2 ORN
UNIT -D
S3 BRN
TB3C
S1 YLW
TO INDOOR
S2 ORN
UNIT -C
S3 BRN
TB3B
S1 YLW
TO INDOOR
S2 ORN
UNIT -B
S3 BRN
TB3A
S1 YLW
TO INDOOR
S2 ORN
UNIT -A
S3 BRN
TB2B
S1 YLW
TO OUTDOOR
S2 ORN
UNIT
S3 BRN
ON
OFF
B.C
SW1 W
5
TB3E
3 (GRN)
1
LED1 LED2 LED3 LED4 LED5
1 2 3 4 5 6 7
8 9 10 11 12 13 14
TH-A 1
(WHT) 2
TH-A
CNM
TH-B 1
(RED) 2
TH-B
TH-C 1
(BLU) 2
TH-C
TH-D 1
(BLK) 2
TH-D
TH-E 1
(GRN) 2
TH-E
5
TB3D
3 (BLK)
1
5
TB3C
3 (BLU)
1
5
TB3B
3 (RED)
1
5
TB3A
3 (WHT)
1
1 CN3C
3 (BLU)
3 CND
1 (ORN)
F1
TB1
37
(PAC - AK50BC only)
LEV-A 1
(WHT) 6
6
LEV-B 1
(RED) 6
6
LEV-C 1
(BLU) 6
6
LEV-D 1
(BLK) 6
6
LEV-E 1
(GRN) 6
6
LEV-A
LEV-B
LEV-C
LEV-D
LEV-E
(PAC - AK50BC only)
OC316D--2.qxp
07.8.24 4:08 PM
8
Page 38
NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION
REFRIGERANT SYSTEM DIAGRAM
Condenser / evaporator
temperature thermistor
(TH5 or RT12)
Room temperature
thermistor (TH1 or RT11)
Bypass valve(SV2)
4-way valve
Service port
Strainer
#50
Capillary
tube1
Thermistor (TH-A~E)
(Gas pipe temperature)
Check valve
(Low Pressure)
LEV A~E
(Linear expansion valve)
Strainer
#100
Outdoor unit
Branch box
Capillary
tube3
Distributor
with Strainer
Oil separator
Thermistor TH4
(Discharge temperature)
Thermistor TH8
(Fin temperature)
Accumulator
Service port
Compressor
Refrigerant flow in cooling
Refrigerant flow in heating
Strainer
#100
Branch box
MXZ-8A140VA
MXZ-8A140VA1
MXZ-8A140VA2
MXZ-8A140VA3
High
pressure
switch
63H
Low
pressure
switch
63L
Stop valve
Indoor units
Thermistor TH3
(Pipe temperature : liquid)
Capillary
tube2
Strainer
#100
Capillary
tube4
Thermistor TH6
(Pipe temperature : condenser)
Strainer
#100
Ball valve
Strainer
#100
High pressure sensor
discharge pressure sensor
63HS
Thermistor TH7
(Outdoor temperature)
Bypass valve (SV1)
E
D
C
B
A
Pipe temperature
thermistor / liquid
(TH2 or RT13)
Check valve
(High Pressure)
Outdoor unit
Capillary tube 1
(For return of oil
from oil separator)
Capillary tube 2
(For SV2)
[2.5 o [0.8 o L1000
[4 o [2.4 o L250
Capillary tube 3
ahead of LEV
(in cooling mode)
unit : mm
Capillary tube 4
behind LEV
(in cooling mode)
PAC-AK50BC
([4 o [2.4 o L140) o 5 ([4 o [2.2 o L130) o 5
PAC-AK30BC
([4 o [2.4 o L140) o 3 ([4 o [2.2 o L130) o 3
Piping connection size
B
A
Liquid (mm)
{9.52
Gas (mm)
{15.88
The pipe connection size differs according to the type and capacity of indoor units.
Match the piping connection size of branch box with indoor unit.
If the piping connection size of branch box does not match the piping connection
size of indoor unit, use optional different-diameter (deformed) joints to the branch
box side. (Connect deformed joint directly to the branch box side.)
■ In case of using 1-branch box
Flare connection employed (No. brazing)
Branch box
A
B
B
B
B
B
■ In case of using 2-branch boxes
2 branches pipe (joint)
: optional parts
A
A
Branch box #1
A
B
B
B
Branch box #2
B
B
■ installation procedure (2 branch pipe (joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
38
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07.8.24 2:09 PM
Page 39
■ Pipe size (Branch box-Indoor unit) *Case of M series or S series Indoor unit
Indoor unit
type
(kW)
22
25
35
50
60
71
80
Pipe size
(mm)
Liquid
Gas
[6.35
[9.52
[6.35
[9.52
[6.35
[9.52
[6.35
[12.7
[6.35
[15.88 w
[9.52
[15.88
[9.52
[15.88
When using 60 type indoor unit of MEXZ series, use the flare nut in the indoor unit accessory for the gas side
connecting of indoor unit.
Do not use the flare nut (gas side) attached to the indoor unit. If it is used, a gas leakage or even a pipe extraction
may occur.
■ Pipe size (Branch box-Indoor unit) *Case of P series Indoor unit
Indoor unit
type
Pipe size
(mm)
(kW)
35
50
60
71
Liquid
Gas
[6.35
[12.7
[6.35
[12.7
[9.52
[15.88
[9.52
[15.88
When using 35, 50 type indoor unit of P series, use the flare nut (for R410A) attached to the indoor unit.
Do not use the flare nut (for R407C) in the indoor unit accessory. If it is used, a gas leakage or even a pipe
extraction may occur.
(1) Valve size for outdoor unit
For liquid
For gas
[9.52mm
[15.88mm
(2) Valve size for branch unit
w
w
w
A UNIT
Liquid pipe
Gas pipe
B UNIT
Liquid pipe
Gas pipe
C UNIT
Liquid pipe
Gas pipe
D UNIT
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
w 3- branch type is only for A, B, and C unit.
E UNIT
[6.35 mm
[9.52 mm
[6.35 mm
[9.52 mm
[6.35 mm
[9.52 mm
[6.35 mm
[9.52 mm
[6.35 mm
[12.7 mm
Different-diameter joint (optional parts) (Fig.7-1)
Model name
MAC-A454JP
MAC-A455JP
MAC-A456JP
PAC-493PI
PAC-SG76RJ-E
Connected pipes diameter Diameter A Diameter B
mm
mm
mm
{12.7
{9.52
{9.52 ➝ {12.7
{9.52
{12.7
{12.7 ➝ {9.52
{15.88
{12.7
{12.7 ➝ {15.88
{9.52
{6.35
{6.35 ➝ {9.52
{15.88
{9.52
{9.52 ➝ {15.88
39
A
B
Fig.7-1
Conversion formula
[6.35mm
1/4 inch
[9.52mm
3/8 inch
[12.7mm
1/2 inch
5/8 inch [15.88mm
3/4 inch [19.05mm
OC316D--2.qxp
9
07.8.24 2:09 PM
Page 40
TROUBLESHOOTING
9-1. 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
Actions to be taken for service (summary)
Error code
Displayed
Judge what is wrong and take a corrective action according
to “9-3. SELF-DIAGNOSIS ACTION TABLE”.
The trouble has recurred.
Not displayed
Logged
Conduct trouble shooting and ascertain the cause of the
trouble according to “9-4. TROUBLESHOOTING
BY INFERIOR PHENOMENA”.
1Consider 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, weather when the
trouble occurred, matters related to wiring and etc.
2Reset error code logs and restart the unit after finishing
service.
3There is no abnormality concerning of parts such as
electrical component, controller board, remote controller
and etc.
The trouble is not reoccurring.
Not logged
1Re-check the abnormal symptom.
2Conduct trouble shooting and ascertain the cause of the
trouble according to “9-4. TROUBLESHOOTING
BY INFERIOR PHENOMENA”.
3Continue to operate unit for the time being if the cause
is not ascertained.
4There is no abnormality concerning of parts such as
electrical component, controller board, remote controller
and etc.
40
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Page 41
9-2. CHECK POINTS FOR TEST RUN
9-2-1. Before test run
● Turn on the main power switch more than 12 hours before starting operation.Starting operation just after turning on the
power switch can severely damage the internal parts. Keep the main power switch turned on during the operation season.
● After completing installation and the wiring and piping of the indoor and outdoor units, check for refrigerant leakage,
looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply.
● Use a 500-volt M-ohm tester to check that the resistance between the power supply terminals and ground is at least 1 M".
● Do not carry out this test on the control wiring (low voltage circuit) terminals.
. Warning: Do not use the air conditioner if the insulation resistance is less than 1 M"
".
Insulation resistance
After installation or after the power source to the unit has been cut for an extended period, the insulation resistance will drop
below 1 M" due to refrigerant accumulating in the compressor. This is not a malfunction. Perform the following procedures.
1.Remove the wires from the compressor and measure the insulation resistance of the compressor.
2.If the insulation resistance is below 1 M", the compressor is faulty or the resistance dropped due to the accumulation of
refrigerant in the compressor.
3.After connecting the wires to the compressor, the compressor will start to warm up after power is supplied. After supplying
power for the times indicated below, measure the insulation resistance again.
• The insulation resistance drops due to accumulation of refrigerant in the compressor. The resistance will rise above 1M"
after the compressor is warmed up for 4 hours. (The time necessary to warm up the compressor varies according to
atmospheric conditions and refrigerant accumulation.)
• To operate the compressor with refrigerant accumulated in the compressor, the compressor must be warmed up at least
12 hours to prevent breakdown.
4. If the insulation resistance rises above 1 M", the compressor is not faulty.
. Caution:
• The compressor will not operate unless the power supply phase connection is correct.
• Turn on the power at least 12 hours before starting operation.
Staring operation immediately after turning on the main power switch can result in severe damage to internal parts.
Keep the power switch turned on during the operational season.
● The followings must be checked as well.
• The outdoor unit is not faulty. LED on the control board of the outdoor unit flashes when the outdoor unit is faulty.
• Both the gas and liquid stop valves are completely open.
9-2-2. Test run
(1) Using remote controller
Refer to the indoor unit installation manual.
• Be sure to perform the test run for each indoor unit. Make sure each indoor unit operates properly following the installation
manual attached to the unit.
• If you perform the test run for all indoor units at once, you cannot detect any erroneous connection, if any, of the refrigerant
pipes and the connecting wires.
* The compressor operation is not available for 3 minutes at least after the power is supplied.
• The compressor can emit noise just after turn on the power supply or in case of low outside air temperature.
About the restart protective mechanism
Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect
the air conditioner.
41
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07.8.24 2:09 PM
Page 42
(2) Using SW4 in outdoor unit
In case of the test run from outdoor unit, all indoor units operate. Therefore, you cannot detect any erroneous connection of refrigerant pipes and the connecting wires. If it aims at detection of any erroneous connection, be sure to
carry out the test run from remote controller with reference to "(1) Using remote controller."
SW4-1
SW4-2
SW4-1
SW4-2
ON
OFF
ON
ON
Cooling operation
Heating operation
w After performing the test run, set SW4-1 to OFF.
• A few seconds after the compressor starts, a clanging noise may be heard from the inside of the outdoor unit. The noise is
coming from the check valve due to the small difference in pressure in the pipes. The unit is not faulty.
The test run operation mode cannot be changed by DIP switch SW4-2 during the test run. To change the test run
operation mode during the test run, stop the test run by DIP switch SW4-1. After changing the test run operation
mode, resume the test run by switch SW4-1.
When a test run is started by “Using SW4 in outdoor unit”, even if it carries out stop instructions by
remote controller, outdoor unit does not stop. A test run is not ended.
In this case, please set SW4 in outdoor unit to off.
• After power is supplied or after an operation stop for a while, a small clicking noise may be heard from the inside
of the branch box. The electronic expansion valve is opening and closing. The unit is not faulty.
NOTE:Be sure to wait at least 3 minutes after turning on the power supply before setting SW4-1and SW4-2.
If the DIP switches are set before 3 minutes has elapsed, the test run may not start.
9-2-3. Test run by outdoor unit SW4
The setting of test run (ON/OFF) and its operation mode (cooling/heating) can be set by SW4 on the controller board of outdoor unit.
1Set operation mode(cooling or heating) by SW4-2.
2Start test run by setting SW4-1 to ON (
) with the indicated operation mode of SW4-2.
SW4 (Initial setting)
3Finish test run by setting SW4-1 to OFF (
).
C D
• Operation mode cannot be changed by SW4-2 during test run.
A Stop
ON
Stop test run to change operation mode by SW4-1, and restart test run by SW4-1 after
B Cooling
the mode is changed.
C Operation
• Test run automatically stops 2 hours later by 2-hour OFF timer function.
D Heating
1 2
• Test run can be performed by the remote controller.
A B
• The remote controller display of test run by outdoor unit is the same as that of test run by
remote controller.
• If test run is set with the outdoor unit, the test run is performed for all indoor units.
• The remote controller operation becomes unavailable once the test run is set with the outdoor unit.
During the test run set with the outdoor unit, operation on/off or operation mode change cannot be performed by the remote
controller, and the operation relating to the test run which is made with the outdoor unit will be prior to any other commands
from the remote controller. Set the SW4-1 to OFF ( ) to finish test run.
Emergency operation is not available for this model.
42
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07.8.24 2:09 PM
Page 43
9-3. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
Error Code
(Note 1) Refer to indoor unit section for code P and code E.
Abnormal point and detection method
Case
Judgment and action
1 No voltage is supplied to termi- 1 Check following items.
a) Power supply breaker
nal block(TB1) of outdoor unit.
a) Power supply breaker is
b) Connection of power supply terminal
block.
turned off.
(TB1)
b) Contact failure or disconc) Connection of power supply terminal
nection of power supply terblock.
minal
c) Open phase (L or N phase)
(TB1)
2 Check following items.
2 Electric power is not charged
to power supply terminal of
a) Connection of power supply terminal
block.
outdoor power circuit board.
(TB1)
a) Contact failure of power
b) Connection of terminal on outdoor power
supply terminal
b) Open phase on the outdoor
circuit board.
power circuit board
Disconnection of connector SC-R or
SC-S
Disconnection of connector
Refer to 9-7.
SC-R or SC-S
None
—
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 9-7.
4 Disconnection of reactor (DCL) 4 Check connection of reactor. (DCL)
Check connection of “L1” and “L2”
on the active filter module.(ACTM)
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 9-7.
6 Defective outdoor power circuit 6 Replace outdoor power circuit board.
board
7 Defective outdoor controller
7 Replace controller board (When items above
circuit board
are checked but the units cannot be
repaired.)
F3
(5202)
63L connector open
1 Disconnection or contact failure 1 Check connection of 63L connector on
Abnormal if 63L connector circuit is open
of 63L connector on outdoor
outdoor controller circuit board.
for 3 minutes continuously after power supcontroller circuit board
Refer to 9-7.
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.
ant leakage or defective parts.
Charge additional refrigerant.
Check continuity by tester.
4 Defective outdoor controller
circuit board
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
F5
(5201)
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 9-7.
2 Check the 63H side of connecting wire.
F9
(4119)
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 continuousoutdoor controller circuit board.
ly 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 9-7.
2 Check the 63H and 63L side of connecting
wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
43
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
OC316D--2.qxp
Error Code
EA
(6844)
Eb
(6845)
07.8.24 2:09 PM
Page 44
Case
Abnormal point and detection method
Judgment and action
Indoor–branch box/branch box–outdoor 1 Contact failure or miswiring of 1 Check disconnection or looseness or polarity
of indoor–branch box/branch box–outdoor
indoor/outdoor unit connecting
unit connector miswiring, excessive
unit connecting wire of indoor and outdoor
wire
number of units
units.
1. Outdoor/branch box controller circuit
board can automatically check the num2 Check diameter and length of indoor–branch
ber of connected indoor units. Abnormal 2 Diameter or length of indoor–
box/branch box–outdoor unit connecting wire.
branch box/branch box–outif the number cannot be checked autoTotal wiring length: 55m (outdoor–branch box)
door unit connecting wire is out
matically due to miswiring of indoor–
(including wiring connecting each branch box
of specified capacity.
branch box/branch box–outdoor unit
unit and between branch box and outdoor
There are 9 or more indoor
connecting wire and etc. after power is
unit)
units in the system.
turned on for 4 minutes.
Also check if the connection order of flat
There are 3 or more branch
cable is S1, S2, S3.
boxes in the system.
3 Defective transmitting receiving
If the error “EA” is detected, check the numcircuit of outdoor/branch box
ber of the indoor units and the branch box in
controller circuit board
the system.
4 Defective transmitting receiving
circuit of branch box/indoor
controller board
3~5 Turn the power off once, and on again to
check.
5 Defective branch box/indoor
Replace outdoor controller circuit board,
power board
branch box controller board, indoor con6 Noise has entered into power
troller board or indoor power board if
supply or indoor–branch box
abnormality occurs again.
/branch box–outdoor unit
connecting wire.
6 Check transmission path, and remove the
cause.
Miswiring of indoor–branch box/branch 1 Contact failure or miswiring of
box–outdoor unit
indoor–branch box/branch box
w The descriptions above, 1-6, are for EA, Eb
connecting wire (converse wiring or
–outdoor unit connecting wire
and EC.
disconnection)
2 Diameter or length of indoor–
Outdoor/branch box controller circuit board
branch box/branch box–outdoor unit connecting wire is out
can automatically set the unit number of
of specified capacity.
indoor units.
4 Defective transmitting receiving
Abnormal if the indoor unit number can
circuit of outdoor/branch box
not be set within 4 minutes after power on
controller circuit board
because of miswiring (converse wiring or
5 Defective transmitting receiving
disconnection) of indoor–branch
circuit of indoor/branch box
box/branch box–outdoor unit connecting
controller board
wire.
6 Defective indoor/branch box
power board
7 Noise has entered into power
supply or indoor–branch
box/branch box–outdoor unit
connecting wire.
Start-up time over
The unit cannot finish start-up process
within 4 minutes after power on.
EC
(6846)
1 Contact failure of indoor–
branch box/branch box–outdoor unit connecting wire
2 Diameter or length of indoor–
branch box/branch box–outdoor unit connecting wire is
out of specified capacity.
3 Noise has entered into power
supply or indoor–branch
box/branch box–outdoor unit
connecting wire.
44
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Page 45
<Abnormalities detected while unit is operating>
Error Code
Abnormal point and detection method
(1) High-pressure switch (63H) worked
Abnormal if high-pressure switch 63H
worked ( w ) during compressor operation.
w 4.15 MPa
63H: High-pressure switch
U1
(1302)
(2) High pressure
(High - pressure sensor 63HS detect)
1 When high-pressure pressure sensor
detects 4.31MPa or more (or over
4.15MPa for 3 minutes) (1st detection)
during the compressor operation, the
compressor stops and restarts operation in 3 minutes.
2 When the sensor detects 4.31MPa or
more (or over 4.15MPa for 3 minutes)
again (2nd detection) within 30 minutes
since the compressor has stopped, the
compressor stops again and restarts
operation in 3 minutes.
3 When the sensor detects 4.31MPa or
more (or over 4.15MPa for 3 minutes)
again (3rd detection) within 30 minutes
since the compressor has stopped, the
compressor stops again and restarts
operation in 3 minutes.
4 When the sensor detects 4.31MPa or
more (or over 4.15MPa for 3 minutes)
again (4th detection) within 30 minutes
after 3rd compressor stop, it stops
abnormally. In this time <U1> is displayed.
5 When the sensor detects 4.31MPa or
more (or over 4.15MPa for 3 minutes)
after 30 minutes since the compressor
has stopped (1st or 2nd or 3rd time), it
becomes the 1st detection or the same
performance as above-mentioned 1.
6 It is being delay for abnormal stop during 30 minutes since the compressor
has stopped. In this time, check delay
code <U1> will be displayed.
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 fully opened)
8) Clogged or broken pipe
9) Locked outdoor fan motor
10) Malfunction of outdoor fan
motor
11) Short cycle of outdoor unit
12) Dirt of outdoor heat exchanger
13) Decreased airflow caused by
defective inspection of out
side temperature thermistor
(It detects lower temperature
than actual temperature.)
14) Disconnection or contact failure of connector (63H) on
outdoor controller board
15) Disconnection or contact failure of 63H connection
16) Defective outdoor controller
board
17) Defective action of linear
expansion valve
18) Malfunction of fan driving circuit
19) Solenoid valve (SV1) performance failure (High-pressure
pressure cannot be controlled
by SV1)
20) High-pressure pressure sensor defective
21) High-pressure pressure sensor input circuit defective in
multi controller board
45
Judgment and action
1)~6) Check indoor unit and repair defect.
7) Check if stop valve is fully open.
8) Check piping and repair defectives.
9)~12) Check outdoor unit and repair defect.
13) Check the detected temperature of outside
temperature thermistor on LED display.
14)~16) Put the power off and check F5 is
displayed when the power is put again.
When F5 is displayed, refer to
“Judgment and action” for F5.
17) Check linear expansion valve.
Refer to 9-6.
18) Replace outdoor controller board.
19) Check the solenoid valve performance.
20) Check the high-pressure pressure sensor.
21) Check the high-pressure pressure sensor.
OC316D--2.qxp
Error Code
U2
(1102)
U3
(5104)
07.8.24 2:09 PM
Page 46
Abnormal point and detection method
(1) High discharging temperature
Abnormal if discharge temperature
thermistor (TH4) exceeds 125: or
110: continuously for 5 minutes.
Abnormal if pressure detected by high
pressure sensor and converted to saturation temperature exceeds 40: during defrosting and discharge temperature thermistor (TH4) exceeds 110:.
Case
1 Overheated compressor operation caused by shortage of
refrigerant
2 Defective operation of stop
valve
3 Defective thermistor
4 Defective outdoor controller
board
5 Defective action of linear
expansion valve
Judgment and action
1 Check intake superheat.
Check leakage of refrigerant.
Charge additional refrigerant.
2 Check if stop valve is fully open.
34 Turn the power off and check if U3 is displayed when the power is turned on again.
When U3 is displayed, refer to “Judgement
and action” for U3.
5 Check linear expansion valve.
Refer to 9-6.
(2) Refrigerant shortage abnormality
1 When the conditions of below detecting
mode 1 or 2 are satisfied (1st detection) during the compressor operation,
the compressor stops and restarts
operation in 3 minutes.
<Detecting mode 1>
When the below conditions are satisfied completely.
1. Compressor is operating in HEAT
mode.
2. Discharge superheat is 70; or
more.
3. Difference of outer temperature thermistor (TH7) and outdoor piping
temp. thermistor (TH3) applies to the
formula of (TH7-TH3)<5;.
4. High-pressure pressure sensor is
below about 2.04MPa.
<Detecting mode 2>
When the below conditions are satisfied
completely.
1. Compressor is operating.
2. When cooling, discharge superheat
is 80; or more.
When heating, discharge superheat
is 90; or more.
High pressure sensor is below about
2.32MPa.
2 When the conditions of detecting mode
1and 2 are satisfied again (2nd
detection) within 30 minutes since the
compressor has stopped, it stops
abnormally. In this time, <U2> is displayed.
3 When the conditions of detecting
mode1and 2are satisfied again after
30 minutes since the compressor has
stopped (1st time), it becomes the 1st
detection and same performance as
above 1.
4 It is being delay for abnormal stop during 30 minutes since the compressor
has stopped. In this time, check delay
code <U2> will be displayed.
1 Check the refrigerant amount.
1 Gas leakage, Gas shortage
2 When heating operation, scant 2 Check the operation condition and refrigerant
amount.
refrigerant operation
(When heating, airflow or thermo OFF are mixed-operation, it
cause a refrigerant shortage
operation.)
Open/short circuit of discharge
temperature thermistor (TH4)
Abnormal if open (3: or less) or short
(217: 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.)
1 Disconnection or contact failure of connector (TH4) on the
outdoor controller circuit board
2 Defective thermistor
3 Ball valve performance failure 3 Check the ball valve is fully opened.
(Not fully opened.)
4 1) Check the ball valve is fully opened.
4 Error detection of discharge
super heat
2) Check the resistance of discharge temper1) High-pressure pressure senature thermistor.
sor defective
3) According to “Monitoring function for out2) Discharge temperature therdoor unit”, set the SW2 and check the
mistor defective
high-pressure pressure sensor level.
3) Thermistor input circuit
defective and high-pressure
pressure sensor defective in
According to “Monitoring function for outdoor
multi controller board
unit”, set the SW2 and check the discharge
temp. thermistor level.
When the high-pressure sensor and discharge temp. thermistor are normal, if the
above mentioned detecting pressure level
and temp. are big different from the actual
pressure and temp., replace the multi controller board.
5 Error detection of TH7/TH3
1) Thermistor defective
2) Thermistor input circuit
defective in multi controller
board
3 Defective outdoor controller
circuit board
46
5 1) Check the resistance of thermistor.
2) According to “Monitoring function for outdoor unit”, set the SW2 and check the outdoor pipe temp. thermistor level.
3) According to “Monitoring function for outdoor unit”, set the SW2 and check the
outer temp. thermistor level.
1 Check connection of connector (TH4) on the
outdoor controller circuit board.
Check breaking of the lead wire for thermistor
(TH4). Refer to 9-6.
2 Check resistance value of thermistor (TH4)or
temperature by microcomputer.
(Thermistor/TH4: Refer to 9-6.)
(SW2 on A-Control Service Tool:
Refer to 9-8.)
3 Replace outdoor controller board.
OC316D--2.qxp
07.8.24 2:09 PM
Error Code
Page 47
Abnormal point and detection method
Judgment and action
Case
(1) Open/short circuit in the outdoor
1One or more connectors on out- 1Check the connector’s contact and the electric
wires of thermistor.
unit thermistors (TH3, TH7, and TH8)
door controller circuit board
(TH3, TH7 and TH8) and
and branch box’s thermistors(TH-A~E)
branch box controller board
Abnormal if open or short circuit is detected
(TH-A~E) have contact failure
while the compressor is operating.
or disconnection.
Open detection of thermistors TH3 is inop2Check the resistance value of thermistors or
erative for 10 seconds to 10 minutes after 2Defective thermistor
the temperatures by referring to the section of
compressor starting and 10 minutes after
“Monitoring function for outdoor unit”.
and during defrosting.
(Convert modes by SW2.)
WCheck which unit has abnormality in its
3Outdoor controller circuit board 3Replace the whole outdoor controller board.
thermistor by switching the mode of SW2. is defective.
(Refer to 9-8.)
Open/short circuit in the branch box thermistor. (TH-A–TH-E)
Thermistors
Symbol
Name
TH3 Thermistor <Outdoor pipe>
TH7 Thermistor <Outdoor>
TH8 Thermistor <Heatsink>
Branch box unit
TH-A~E Thermistor
(Room A-E) (Gas pipe temperature detection)
Open detection
Short detection
– 40: or below
– 40: or below
– 27: or below
90: or above
90: or above
102: or above
U4
(TH3:5105)
(TH7:5106)
(TH8:5110)
– 40: or below
90: or above
(63HS:5201)
TH-A~E
(2) High-Pressure sensor (63HS) abnormality
:5131
1When detected pressure in high-pressure 1High-pressure sensor failure
1 Check the high-pressure pressure sensor.
pressure sensor is 1MPa or less during
the operation, the compressor stops and
restarts operation in 3 minutes.
(
)
2When the detected pressure is 1MPa or
less at just before of restarting, the compressor stops abnormally. In this time,
<U4> is displayed.
U5
(4230)
U6
(4250)
2Internal pressure decrease by
gas leakage
2 Check the internal pressure.
3For 3 minutes after the compressor
3Connector contact failure disstops, the unit delays to abnormal stop.
connection
Then, the outdoor unit address No. and
check delay code <U4> blinks alternately
on the 7 SEG digital display.
3 Check the high-pressure pressure sensor.
4For 3 minutes after starting compressor,
for defrosting or for 3 minutes after
recovery from defrosting, abnormality is
not determined as abnormality.
4Controller board input circuit
failure
4 Check the controller board
Abnormal temperature of heatsink
Abnormal if heatsink thermistor(TH8)
detects temperature indicated 85:
1 The outdoor fan motor is locked. 12 Check outdoor fan.
2 Failure of outdoor fan motor
3 Air flow path is clogged.
3 Check air flow path for cooling.
4 Rise of ambient temperature
4 Check if there is something which causes
temperature rise around outdoor unit.
(Upper limit of ambient temperature is 46:.)
Turn off power, and on again to check if U5
is displayed within 30 minutes.
If U4 is displayed instead of U5, follow the
action to be taken for U4.
5 Defective thermistor
5 Check resistance value of thermistor (TH8)
or temperature by microcomputer.
(Thermistor/TH8: Refer to 9-6.)
(SW2 on A-Control Service Tool: Refer to 9-8.)
6 Defective input circuit of
6 Replace outdoor power circuit board.
outdoor power circuit board
7 Failure of outdoor fan drive
7 Replace outdoor controller circuit board.
circuit
Abnormality of power module
1 Outdoor stop valve is closed.
Check abnormality by driving power module 2 Decrease of power supply voltage
in case overcurrent is detected.
3 Looseness, disconnection or
(UF or UP error condition)
converse of compressor wiring
connection
4 Defective compressor
5 Defective outdoor power circuit
board
47
1 Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U·V·W phase) to
compressor. Refer to 9-7.
4 Check compressor referring to 9-6.
5 Replace outdoor power circuit board.
OC316D--2.qxp
Error Code
U7
(1520)
U8
(4400)
07.8.24 2:09 PM
Page 48
Abnormal point and detection method
Case
Judgment and action
(1)Too low superheat due to low discharge temperature
Abnormal if discharge superheat is continuously detected -15: or lss 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
12 Check the installation conditions of
discharge temperature thermistor (TH4).
(2) Erroneous connection of refrigerant
pipes or the connecting wires
Consider the stopping indoor unit abnormal if condenser/evaporator temperature
thermistor (TH5 or RT12) detects -5: or
below continuously for 5minutes during a
compressor’s operation in cooling mode.
1Failure in piping / wiring
1Check piping / wiring between branch box
and indoor unit.
Refer to “Test run (Using remote controller)”.)
2Check the pipe for refrigerant and change the
wrong parts.
2Pipe (liquid) is clogged or
crushed.
Outdoor fan motor
1Failure in the operation of
The outdoor fan motor is considered to be
the DC fan motor
abnormal if the rotational frequency of fan 2Failure 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 26: or more outside
air temperature
• 50 rpm or below or 1500 rpm or more
detected continuously for 1 minute.
1Check or replace the DC fan motor.
2Check the voltage of the outdoor circuit
controller board during operation.
3Replace the outdoor circuit controller
board. (when the failure is still indicated
even after performing the remedy 1
above.)
1 Decrease of power supply voltage 1 Check the facility of power supply.
2 Disconnection of compressor
2 Correct the wiring (U·V·W phase) to comwiring
pressor. Refer to 9-7.
3 Defective 52C
3 Replace 52C.(VA/VA1/VA2)
Abnormal if any of followings are detected
Replace noise filter circuit board.(VA3)
during compressor operation;
4Replace ACT module.
4 Defective ACT module
• Decrease of DC bus voltage to 310V
5 Replace outdoor power circuit board.
5 Defective ACT module drive
• Instantaneous decrease of DC bus voltage
circuit of outdoor power circuit
to 200V
board
• Increase of DC bus voltage to 400V
6 Disconnection or loose connec- 6 Check CNAF wiring.
• Decrease of input current of outdoor unit
tion of CNAF
to 0.5A only if operation frequency is more 7 Defective 52C drive circuit of
7 Replace outdoor controller circuit board.
than or equal to 40Hz or compressor
(220-240VAC output : VA/VA1/VA2)
outdoor controller circuit board
current is more than or equal to 5A.
(12V DC output : VA3)
8 Check CN5 wiring on the outdoor power
8 Disconnection or loose
circuit board.
connection of CN5 on the
Refer to 9-7.
outdoor power circuit board
9 Check CN2 wiring on the outdoor power
9 Disconnection or loose
circuit board.
connection of CN2 on the
Refer to 9-7.
outdoor power circuit board
Overvoltage or voltage shortage and
abnormal synchronous signal to main
circuit
U9
(4220)
UF
(4100)
Compressor overcurrent interruption
(When compressor locked)
Abnormal if overcurrent of DC bus or
compressor is detected within 30 seconds
after compressor starts operating.
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 9-7.
4 Check compressor.
Refer to 9-6.
5 Defective outdoor power board 5 Replace outdoor power circuit board.
48
OC316D--2.qxp
07.8.24 2:09 PM
Error Code
UH
(5300)
Page 49
Abnormal point and detection method
Case
Judgment and action
Current sensor error
1 Disconnection of compressor
Abnormal if current sensor detects –1.5A
wiring
to 1.5A during compressor operation. (This 2 Defective circuit of current
error is ignored in case of test run mode.)
sensor on outdoor power
circuit board
1 Correct the wiring (U·V·W phase) to compressor. Refer to 9-7.
2 Replace outdoor power circuit board.
Abnormal if input current exceeds 38 A or 1Decrease of power supply volt34A continuously 10 seconds.(Current senage
sor on noise filter board detects input current)
1Check the facility of power supply.
Low pressure (63L worked)
Abnormal if 63L is worked (under0.03MPa) during compressor operation.
63L: Low-pressure switch
UL
(1300)
Compressor overcurrent interruption
Abnormal if overcurrent DC bus or compressor is detected after compressor
starts operating for 30 seconds.
UP
(4210)
1 Stop valve of outdoor unit is
closed during operation.
2 Disconnection or loose connection of connector (63L) on 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.
1 Stop valve of outdoor unit is
closed.
2 Decrease of power supply voltage
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.
2 Check facility of power supply.
3 Correct the wiring (U·V·W phase) to compressor. Refer to 9-7.
4 Check indoor/outdoor fan.
5 Solve short cycle.
6 Replace outdoor controller circuit board.
7 Check compressor. Refer to 9-6.
W Before the replacement of the outdoor controller circuit board, disconnect the wiring for
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 same. Make sure to perform the
voltage check with same performing frequency.
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 9-6.
Remote controller communication error 1 Defective communication cir1~3 Diagnose remote controller.
(Signal receiving error)
cuit of remote controller
Take actions as follows according to
(1) Abnormal if any signal from IC of refrig- 2 Defective communication cirdiagnosis result.
erant address “0” could not be normally
a) When “RC OK” is displayed,
cuit of indoor controller board
received for 3 minutes.
remote controllers have no problem.
of refrigerant address “0”
(2) Abnormal if sub remote controller could 3 Noise has entered into transmisTurn the power off, and on again to
E0
not receive any signal for 2 minutes.
check. If, “PLEASE WAIT” or “H0” is
sion line of remote controller.
(No display)
displayed for 4 minutes or more,
4 All remote controllers are set
replace indoor controller board.
as “sub” remote controller. In
b) When “RC NG” is displayed,
this case, E4 is displayed at
replace remote controller.
outdoor LED, and E0 is disc) When “RC E3” or “ERC 00-66” is displayed at remote controller.
played, noise may be causing abnorRemote controller communication error 1 Defective communication cirmality.
(Transmitting error)
cuit of remote controller
4 Set a remote controller to main, and the
(1) Abnormal if sub remote controller could 2 Noise has entered into transother to sub.
E3
not find blank of transmission path for 6
mission line of remote controller. w The descriptions above, 1-3, are for E0 and
(No display)
seconds.
3 Two remote controllers are set
E3.
(2) Abnormal if remote controller could not
as "main."
finish transmitting 30 times continuously.
(In case of 2 remote controllers)
E8
(6840)
Indoor - branch box/branch box outdoor unit communication error
(Signal receiving error)
(Branch box/outdoor unit)
(1) Abnormal if branch box/outdoor controller circuit board could not receive
anything normally for 3 minutes.
1 Contact failure of indoor/outdoor unit connecting wire
2 Defective communication circuit
of branch box/outdoor controller
circuit board
3 Defective communication circuit of indoor/branch box controller board
4 Noise has entered into
indoor–branch box/branch box–
outdoor unit connecting wire.
49
1 Check disconnection or looseness of indoor–
branch box/branch box–outdoor unit
connecting wire of indoor or branch box or
outdoor units.
2~4 Turn the power off, and on again to
check. Replace indoor controller board or
branch controller board or outdoor controller circuit board if abnormality is displayed again.
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Page 50
Error Code
Abnormal point and detection method
E9
(6841)
Indoor - branch box/branch box outdoor unit communication error
(Transmitting error)
(Branch box/outdoor unit)
(1) Abnormal if “0” receiving is detected 30
times continuously though branch box/
outdoor controller circuit board has
transmitted “1”.
(2) Abnormal if branch box/outdoor controller circuit board could not find blank
of transmission path for 3 minutes.
1 Check disconnection or looseness of indoor–
1 Indoor–branch box/
branch box–outdoor unit conbranch box/branch box–outdoor unit connectnecting wire has contact failing wire.
ure.
2~4 Turn the power off, and on again to
2 Defective communication circheck. Replace outdoor controller circuit
cuit of outdoor controller circuit
board if abnormality is displayed again.
board
3 Noise has entered power supply.
4 Noise has entered Indoor–
branch box/branch box–
outdoor unit connecting wire.
Non defined error code
This code is displayed when non defined
error code is received.
1 Noise has entered transmission wire of remote controller.
2 Noise has entered Indoor–
branch box/branch box–
outdoor unit connecting wire.
3 Model name of remote controller is PAR-S25A.
EF
(6607
or
6608)
Serial communication error
1.Abnormal if serial communication
between outdoor controller circuit
board and outdoor power circuit board
is defective.
Ed
(0403)
Forced compressor stop.
(Overlap malti function of drain pump in
indoor unit and linear expansion valve
in branch box.)
PA
(2520)
Case
Judgment and action
12 Turn the power off, and on again to check.
Replace indoor controller board or branch
controller board or outdoor controller circuit
board if abnormality is displayed again.
3 Replace remote controller with MA remote
controller.
1 Breaking of wire or contact fail- 12 Check connection of each connector CN2
ure of connector CN2 between
and CN4 between the outdoor controller
the outdoor controller circuit
circuit board and the outdoor power circuit
board and the outdoor power
board.
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 circuit 4 Replace outdoor controller circuit board.
of outdoor controller circuit board
for outdoor power circuit board
1 Drain pump trouble
2 Drain defective
· Drain pump clogging
· Drain pipe clogging
1 Check the drain pump.
Performance
2 Please confirm whether water can be
drained.
3 Open circuit of drain sensor
side heater
3 Confirm the resistance of the drain sensor
side heater.
4 Contact failure of drain sensor
connector
4 Check the connector contact failure.
5 Dew condensation on drain
sensor
· Drain water descends along
lead wire.
· Drain water waving due to filter clogging
5 Check the drain sensor leadwire mounted.
Check the filter clogging.
6 Indoor controller board defetive 6 If the above mentioned checkpoints has any
· Drain pump drive circuit failure
problem, replace the indoor controller board.
· Drain heater output circuit failure
When condition which the outdoor unit is
stopped forcibly consists, or the drain sensor detects continuously to go under water
5 times, and also detects ''[liquid pipe tem- 7 Both of above mentioned 1~6 7 Check whether the indoor linear expansion
perature-suction temperature][ -10deg'' for
valve leaks or not.
and the linear expansion valve
30 minutes continuously, the indoor unit
full closed failure happens synstops abnormally (however, fan operates
chronistically.
by normal control) that indoor unit and
excluding [Fan mode or OFF] in same
refrigerant system. Also, the outdoor unit
which is connected to that indoor unit with
refrigerant system stops abnormality (compressor is inhibited to operation). In this
time, <PA> is displayed.
50
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9-4. TROUBLESHOOTING BY INFERIOR PHENOMENA
Phenomena
1. Remote controller display works
normally and the unit performs
cooling operation, however, the
capacity cannot be fully obtained.
(The air does not cool well.)
Factor
1Refrigerant shortage
2Filter clogging
3Heat exchanger clogging
4Air duct short cycle
2. Remote controller display works
normally and the unit performs
heating operation, however, the
capacity cannot be fully obtained.
Countermeasure
1 If refrigerant leaks, discharging temperature rises and LEV opening increases.
Inspect leakage by checking the temperature and opening.
Check pipe connections for gas leakage.
2 Open intake grille and check the filter.
Clean the filter by removing dirt or dust
on it.
3 If the filter is clogged, indoor pipe tem
perature rises and discharging pressure
increases. Check if heat exchanger is
clogged by inspecting discharging pres
sure.
Clean the heat exchanger.
4 Remove the shield.
1Linear expansion valve fault
1 Discharging temperature and indoor heat
Opening cannot be adjusted well due to linear expanexchanger temperature does not rise.
sion valve fault.
Inspect the failure by checking discharging pressure.
Replace linear expansion valve.
2 If 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.
3 Check the insulation.
3Lack of insulation for refrigerant piping
4 Open intake grille and check the filter.
Clean the filter by removing dirt or dust
4Filter clogging
on it.
5 If the filter is clogged, indoor pipe temperature rises and discharging pressure
5Heat exchanger clogging
increases. Check if heat exchanger is
clogged by inspecting discharging pres
sure.
Clean the heat exchanger.
6 Remove the shield.
6Air duct short cycle
7 Check refrigerant system during operation.
7Bypass circuit of outdoor unit fault
12Normal operation
3.1For 3 minutes after temperature
(For protection of compressor)
adjuster turns off, the 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.)
51
12Normal operation
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9-5. SPECIAL FUNCTIONS
9-5-1. Low noise mode (on-site modification) (Fig. 9-1)
By performing the following modification, operation noise of the outdoor unit can be reduced by about 3-4 dB.
The low noise mode will be activated when a commercially available timer or the contact input of an ON/OFF switch is added
to the CNDM connector (optional parts) on the control board of the outdoor unit.
• The capacity may be insufficient according to the outdoor temperature and conditions, etc.
1 Complete the circuit as shown when using the external input adapter (PAC-SC36NA). (Optional parts)
A
B
C
H
E ~
SW1
D
1
1
X
X
I
2
3
J
A Remote control panel
B Relay circuit
C External input adapter (PAC-SC36NA)
D Outdoor unit control board
E Replay power supply
F Procure locally
G Max. 10m
H Orange
I Brown
J Red
3
CNDM
F
G
Fig.9-1
9-5-2. Demand function (on-site modification) (Fig. 9-2)
• It is possible to reduce electricity consumption within a range from 0 to 100 % by performing the following on-site
installation.
The demand function can be enabled by adding a commercially available input contact point ON/OFF switch to the CNDM
connector (the contact point demand input, optional parts).
1 Incorporate the “Adapter for external input (PAC-SC36NA)” into the circuit as shown in the diagram below.
2 By switching SW7-1 on the control circuit board for the outdoor unit, the following power consumption restrictions
(compared to rated power) can be set.
SW7-1
Power consumption when SW2 is on
OFF
0% (Forced compressor stop)
ON
50%
A
B
C
H
I
E ~
J
SW2
Y
Y
D
1
1
2
A Remote control panel
B Relay circuit
C External input adapter (PAC-SC36NA)
D Outdoor unit control board
E Replay power supply
F Procure locally
G Max. 10m
H Orange
I Brown
J Red
3
3
CNDM
F
G
Fig.9-2
9-5-3.Error and compressor operation monitoring function (CN51)
B
A
L1
E
~
C
X
X
Y
L2
D
Y
5
4
3
CN51
5
1
G
F
A Distant control board
B Relay circuit
C External output adapter (PAC-SA88HA-E)
D Outdoor unit control board
E Lamp power supply
F Procure locally
G Max. 10m
L1 : Error display lamp
L2 : Compressor operation lamp
X, Y : Relay (Coil standard of 0.9W or less for DC 12V)
X, Y : Relay (DC1mA)
Fig.9-3
9-5-4. Auto change over - Operation mode locking function by external signal (CN3S)
A
B
C
D
E ~ SW1
X
1
X
SW2
2
3
Y
Y
F
G
CN3S
1
3
A Remote control panel
B Relay circuit
C External input adapter (PAC-SC36NA)
D Outdoor unit control board
E Relay power supply
F Procure locally
G Max. 10m
ON
OFF
Heating
Cooling
SW1
SW2 Validity of SW1 Invalidity of SW1
w The indoor unit, which is operating in the mode different from
the one determined by external signal (CN3S), will be a state of standby.
w The setting becomes effective when the outdoor unit is under stop.
w The operation mode specified by test run will be prior to the mode of this function.
Fig.9-4
52
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9-6. HOW TO CHECK THE PARTS
OUTDOOR UNIT : MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2 MXZ-8A140VA3
Check points
Parts name
Thermistor (TH3)
<Outdoor pipe>
Thermistor (TH4)
<Discharge>
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10:~30:)
Thermistor (TH7)
<Outdoor>
TH3
Thermistor (TH8)
<Heatsink>
TH8
Fan motor(MF1,MF2)
Solenoid valve coil
<Four-way valve>
(21S4)
Abnormal
Normal
TH4
160k"~410k"
Open or short
4.3k"~9.6k"
TH7
39k"~105k"
Refer to next page.
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:)
Normal
MXZ-8A140VA(1) MXZ-8A140VA2, 3
1435±150"
1370±100"
Abnormal
Open or short
Motor for compressor Measure the resistance between the terminals with a tester.
(Winding temperature 20:)
(MC)
U
V
Normal
Abnormal
0.188"
Open or short
W
Solenoid valve coil
<Bypass valve>
(SV1)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:)
Solenoid valve coil
<Bypass valve>
(SV2)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:)
Normal
1327±10"
Abnormal
Open or short
Normal
Abnormal
MXZ-8A140VA(1)
MXZ-8A140VA2, 3
1197±10"
1450±150"
53
Open or short
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Page 54
Check method of DC fan motor (fan motor / outdoor controller circuit board)
1 Notes
· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service.
· 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.)
2 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 no contact failure?
No
Wiring recovery
Yes
Power supply check (Remove the connector (CNF1, 2))
Measure the voltage in the outdoor controller circuit board.
TEST POINT 1 : VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC250~330V
TEST POINT 2 : VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V
Is the voltage normal?
Yes
Replace the fan motor.
Yes
No
Check the operation of fan.
Replace outdoor
controller board.
NG
Replace outdoor controller board.
OK
Check the operation.
END
NG
Replace the fan motor.
54
OK
END
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50
<Thermistor feature chart>
Low temperature thermistors
Thermistor R0 = 15k' ± 3%
B constant = 3480 ± 2%
1
1
Rt =15exp{3480( 273+t – 273 )}
0:
15k'
30:
4.3k'
10: 9.6k'
40:
3.0k'
20: 6.3k'
25: 5.4k'
40
Resistance (k")
Pipe temperature thermistor <Liquid> (TH3)
Pipe temperature thermistor <cond.> (TH6)
Outdoor temperature thermistor (TH7)
Gas pipe temperature thermistor (TH-A ~ TH-E)···· Branch box
30
20
10
0
-20 -10
0
10
20
30
40
50
Temperature (:)
200
Medium temperature thermistor
Heatsink temperature thermistor (TH8)
Thermistor R50 = 17k' ± 2%
B constant = 4170 ± 3%
Resistance (k")
150
1
1
Rt =17exp{4170( 273+t – 323)}
0:
25:
50:
70:
90:
180k'
50k'
17k'
8k'
4k'
100
50
0
25
50
75
100110
125
Temperature (:)
500
High temperature thermistor
Discharge temperature thermistor (TH4)
Thermistor R120 = 7.465k' ± 2%
B constant = 4057 ± 2%
400
20: 250k'
30: 160k'
40: 104k'
50: 70k'
60: 48k'
Resistance (k")
1
1
Rt =7.465exp{4057( 273+t – 393)}
70:
34k'
80:
24k'
90: 17.5k'
100: 13.0k'
110: 9.8k'
300
200
100
0
25
50
75
Temperature (:)
55
100
120
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BRANCH BOX : PAC-AK50BC
PAC-AK30BC
Check points
Parts name
Thermistor (TH-A~E) Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10:~30:)
<Gas pipe>
Normal
Abnormal
4.3k"~9.6k"
Open or short
Linear expansion valve Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20:)
( LEV-A~E )
M
Red
1
Brown 2
Blue 3
Normal
Abnormal
Red - White Red - Orange Brown - Yellow Brown - Blue
Open or short
46±4"
Orange 4
Yellow 5
White 6
56
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Linear expansion valve
(LEV) in Branch box
(1) Operation summary of the linear expansion valve
• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the branch box controller
board.
• Valve position can be changed in proportion to the number of pulse signal.
<Connection between the branch box controller board and the linear expansion valve>
branch box controller board
DC12V
Red
1
Brown
2
[4
Blue
3
[3
Orange
4
[2
Yellow
5
[2
[1
White
6
[1
LEV
Drive circuit
3
M
2
1
5
4
6
[4
[3
Connector LEV-A
LEV-B
LEV-C
LEV-D
LEV-E
<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
[4
OFF OFF OFF OFF OFF ON ON ON
ON ON OFF OFF OFF OFF
ON ON OFF OFF
(2) Linear expansion valve operation
Valve position (capacity)
C
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.)
• 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 burnt out or motor is locked by open-phase.
Close
Open
• Sound can be detected by placing the ear against the screw driver
handle while putting the screw driver to the linear expansion valve.
500 pulse
Opening a valve
all the way
A
B
Pulse number
Extra tightening (about 32 pulse)
57
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Page 58
(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.
Main body
Coil
Lead wire
Stopper
<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 pipe B. (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 pipe B, 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.
B
A
Be sure to attach the
stopper to pipe B.
58
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Page 59
Troubleshooting
Problem
Locked expansion
valve
Check point
Corrective measure
If the linear expansion valve becomes locked and the motor is still operating, Replace the linear
expansion valve.
the motor will emit a clicking noise and will not function. This clicking noise
indicates an abnormality.
Short circuit or broken Use an all-purpose electrical meter to measure the resistance between the
circuit in expansion
different coils (red-white, red-orange, brown-yellow, brown-blue). Normal
valve motor coil
resistance is within a range of 46"±4%.
Replace the linear
expansion valve.
Valve does not close
completely.
In order to check the linear expansion valve, operate 1 indoor unit in the
fan mode and another in the cooling mode. Then, use the outdoor multi
controller board to operate the monitor and check the pipe temperature of
the indoor unit. The linear expansion valve should be fully closed when the
fan is operating. The temperature measured by the temperature sensor
will drop if there is any leakage.
If the measured temperature is significantly lower than that on the remote
controller, this indicates that the valve is not closed. It is not necessary to
replace the linear expansion valve if the leak of refrigerant is small and does
not cause a malfunction.
Replace the linear
expansion valve if there
is a major leak of
refrigerant.
Incorrect connection
or connection failure
1 Check improperly connected connector terminals and the wire colors.
2 Remove the connector on the controller board side and check electrical
conductance.
Continuity check of
wrong part
59
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Page 60
9-7. TEST POINT DIAGRAM
<CAUTION> TEST POINT1 is high voltage.
9-7-1. Outdoor controller circuit board
MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2
VCC (TEST POINT 2)
(voltage between pins of C6B): DC 15V
CNS
(Branch box/outdoor unit connecting wire)
(voltage between pins of
C5E): DC280V-350V
63H
Communication
power supply
ZD71 Voltage
developed across:
16-30V DC
VDC (TEST POINT 1)
High pressure switch
CNDC
+
–
+
}
DC280V-350V
Connect from
outdoor power
circuit board
(CNDC)
–
CNAC
2 to 4: Power supply for
outdoor controller
circuit board
(220V-240V AC)
1 to 3: Power supply for
indoor and branch box /
outdoor unit connection
wire (220V-240V AC)
VSP (TEST POINT 3)
(voltage between pins of
C5A, C5B): DC 0V (when
stopped), DC 1– 6.5V
(when operated)
VFB (TEST POINT 4)
(voltage between right
pins of PC5C and
PC5D, pin 3 and pin 4)
CN2
Connect to the outdoor
power circuit board (CN2)
1-5:
Power circuit board ➔
Transmitting signal to
the controller circuit board
(0-5V DC)
2-5: Zero cross signal
(0-5V DC)
3-4: Not used
6-5: 18V DC
7-5: 18V DC
TH6
Thermistor
<Outdoor 2-phase pipe>
TH7
Thermistor<Outdoor>
TH3
Thermistor
<Outdoor pipe>
[5: – 1,2,6,7: + ]
TH4
52C
Contactor
Thermistor
<Discharge>
21S4
63HS
High pressure
sensor
Four-way valve
SV2
63L
Solenoid valve2
Low pressure switch
SV1
Solenoid valve1
SW5
Function switch
CN4
Transmission
to outdoor
power circuit
board (CN4)
SW6
Model setup
SW1
Forced defrost,
detect history
record reset
LED3
SW7
CN3S SW10
CN51
SW2
SW9
SW4
Test operation
CNDM
1 to 2: Input of low noise mode
1 to 3: Input of external
contact point
60
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Page 61
<CAUTION> TEST POINT1 is high voltage.
Outdoor controller circuit board
MXZ-8A140VA3
SW1
SW7
SW9
SW2
Forced defrost,
detect history record reset
CN3S
CN51
SW6
CNDM
Model select
1 to 2:
Input of low noise
mode
1 to 3:
Input of external contact point
SW4
Test operation
SW5
Function switch
CN52C
SW8
(Connect to the noise
filter circuit board
(CN52C))
LED
CN4
Transmission to outdoor power circuit
board (CN4)
SV1
63L
Solenoid valve 1
Low pressure switch
SV2
63HS
Solenoid valve 2
High pressure sensor
21S4
Four-way valve
TH4
Thermistor
<Discharge>
CN2
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: Not used
6-5: 16V DC
7-5: 16V DC
TH3
Thermistor
<Outdoor pipe>
TH7/6
Thermistor
<Outdoor/
2-phase pipe>
63H
High pressure
switch
CNAC
2 to 4: Power supply for
outdoor controller circuit
board (220V-240V AC)
1 to 3: Power supply for
indoor and outdoor unit
connection wire
(220-240V AC)
VFG
(TEST POINT 4)
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF17(+)-4(-))
CNS
VSP
(TEST POINT 3)
(Voltage between pins
of C5A, C5B): DC 0V
(when stopped), DC 1–
6.5V
CNF1, CNF2
(when operated)
S1-S2: 220-240V AC
(Branch box/outdoor
unit connecting wire)
CNDC
+ -
Connect to the fan motor
280V DC (1+, 3-)
Communication power supply
1-4: 280V DC
Connect to outdoor power circuit
D71 Voltage
5-4: 15V DC
board(CNDC)
6-4: 0-6.5V DC
24V DC
7-4: 15V DC(When stopped)
7.5V DC(When operated)(0V-15V pulse)
61
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Page 62
9-7-2. Outdoor noise filter circuit board
MXZ-8A140VA
LO, NO
Voltage of 220-240V AC is output
(Connect to the outdoor power
circuit board (SC-R, SC-S))
CNAC1, CNAC2
220-240V AC
(Connect to the
outdoor controller
circuit board
(CNAC))
CN5
Primary current
(Connect to the
outdoor power
circuit board
(CN5))
EI
Connect to
the earth
LI, NI
Voltage of 220-240V AC is input
(Connect to the terminal block(TB1))
62
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Page 63
Outdoor noise filter circuit board
MXZ-8A140VA1
MXZ-8A140VA2
LO, NO
Voltage of 220-240V AC is output
(Connect to the outdoor power
circuit board)
CNAC1, CNAC2
220-240V AC
(Connect to the
outdoor controller
circuit board
(CNAC))
TABS
TABT
CN5
Primary current
(Connect to the
outdoor power
circuit board
(CN5))
EI
Connect to
the earth
LI, NI
Voltage of 220-240V AC is input
(Connect to the terminal block(TB1))
63
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Page 64
Outdoor noise filter circuit board
MXZ-8A140VA3
CN52C
52C driving signal
(Connect to the outdoor
controller circuit board
(CN52C).)
RS1
LO, NO
Voltage of 220-240V AC
is output
(Connect to the outdoor
power circuit board
(TABS, TABT))
CNAC1, CNAC2
220-240V 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 220-240V AC is input
(Connect to the terminal block(TB1)).
64
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Page 65
9-7-3. Outdoor power circuit board
MXZ-8A140VA
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 POWER MODULE
1.Check of DIODE circuit
L - P1 , N - P1 , L - N1 , N - N1
2.Check of IGBT circuit
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note:The marks, L , N , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.
CN5
Detection of
primary current
(Connect to the
outdoor noise filter
circuit board (CN5))
CN3
Temperature
<Heatsink>
(TH8)
CN4
Connect to the
outdoor controller
circuit board
(CN4)
CNAF
Connect to
ACTM
CN2
Connect to the outdoor controller circuit
board (CN2)
1-5: Power circuit board ➔ Transmitting
signal to the controller board (0-5V DC)
2-5: Zero cross signal (0-5V DC)
3-4: 18V DC [ 5 : – 1, 2, 6, 7 : + ]
6-5: 15V DC
7-5: 15V DC [ 4 : – 3 : + ]
TAB-U, TAB-V,
TAB-W
Connect to the
compressor (MC)
Voltage among
phases:
5V-180V AC
W
V
U
N2
SC-R, SC-S
Connect to the
outdoor noise filter
circuit board
(LO, NO)
220V-240V AC
N1
N
P2
L
SC-P2, SC-N2
Connect to
ACTM and the
soothing
capacitor
P1
SC-P1
Connect to 52C
SC-N1
Connect to ACTM
POWER
MODULE
–
CNDC
280V-350V DC
+}
Connect to the outdoor controller
circuit board (CNDC)
65
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07.8.24 2:08 PM
Page 66
Outdoor power circuit board
MXZ-8A140VA1
MXZ-8A140VA2
MXZ-8A140VA3
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 POWER MODULE
1.Check of DIODE circuit
S - P1 , T - P1 , S - N1 , T - N1
2.Check of IGBT circuit
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note:The marks, L , N , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.
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
CNDC
310V DC (1+, 3–)
Connect to the outdoor
controller circuit board
TABS/T
Connect to the outdoor
noise filter circuit board
Voltage among
phases:220-240V AC
TABN1/SC-N1
Connect to the ACTM(-)
CN3
Thermistor (TH8)
<Heatsink>
CN5
Detection of primary
current
Connect to the
outdoor noise filter
circuit board (CN5)
TABP1/SC-P1
Connect to 52C
CN4
Connect to the
outdoor controller
circuit board
(CN4)
TABP2/SC-P2
Connect to the
ACTM(P)
TABU/V/W
Connect to the compressor (MC)
Voltage among phases:10V~180V AC
66
TABN2/SC-N2
Connect to the
ACTM(N2)
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Page 67
9-7-4. Branch box controller board
PAC-AK50BC
PAC-AK30BC
TH-A to E Connect to
Thermistor-A to E
TH-A to C for PAC-AK30BC
LED1
Transmission start-up state display
Start-up : LED1 blinks
(0.5sec. : ON, 0.5sec. : OFF)
Start-up completion:LED1 lights
LEV-A to E
Connect to LEV-A to E
LEV-A to C for PAC-AK30BC
LED3~5
Not used
LED2
Transmission
(Branch box/outdoor)
Reception state disply
on branch box side
Branch box No.1
LED2 blinks once.
(0.1sec. : ON,
0.9sec. : OFF)
Branch box No.2
LED2 blinks twice.
(0.1sec. : ON,
0.1sec. : OFF
0.1sec. : ON,
0.7sec. : OFF)
*The blinking interval
might change when
there are changes in
states of indoor units.
TB3A to TB3E
Connect to TB3A to TB3E
(Branch box / Indoor unit connecting wire)
TB3A to TB3C for PAC-AK30BC
67
CN3C, CND
Connect to TB2B
(Branch box / Outdoor unit
connecting wire)
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9-7-5. Active filter module
MXZ-8A140VA
MXZ-8A140VA1
MXZ-8A140VA2
Page 68
+
Connect to the outdoor
power circuit board(TABP1)
L1, L2
Connect to the DCL(Reactor)
–
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
P
Connect to the outdoor power circuit
board(TABP2)
I
Not used
N2
Connect to the
outdoor power
circuit
board(TABN2)
N1
Non-connect
Connection and internal circuit diagram
DCL
L1
L2
(+)
ACTM
N1
N2
(- )
I
68
Load
P
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Page 69
Active filter module
MXZ-8A140VA3
P
Connect to the outdoor power
circuit board(TABP2)
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
Connection and internal circuit diagram
Io
Connect to the outdoor power
circuit board(TABN2)
DCL
L1
(+)
L2
ACTM
N1
N2
(- )
I
69
Load
P
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Page 70
9-8. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
Type of
Switch No.
Switch
Action by the switch operation
ON
OFF
Function
1
Forced defrost
Start
Normal
2
Abnormal history clear
Clear
Normal
3
No function
—
Effective timing
When compressor is
working in heating
operation. w
off or operating
—
ON
ON
—
ON
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
Indoor No.1
Indoor No.2
Indoor No.3
ON
ON
ON
4
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
Indoor No.4
Indoor No.5
Indoor No.6
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
Indoor No.7
Dip
switch
Indoor No.8
<Example>
SW1
OC
5
Indicating a particular
self-diagnosis
Self-diagnosis
(Indoor unit selection)
A
BC#1 (5- branch type)
B
C
D
E
IC
IC
IC
RC
RC
R
C
Indoor
No.3
Indoor Indoor
No.1 No.2
6
BC#2 (3- branch type)
A
B
C
IC
IC
R
R
C
C
Indoor Indoor
No.4 No.5
BC#1 : branch box controller unit Number 1
1 blinking LED2 (branch box controller board)
BC#2 : branch box controller unit Number 2
2 blinking LED2 (branch box controller board)
SW4
1
Test run
Operating
OFF
2
Test run mode setting
Heating
Cooling
Under suspension
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 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 8:.
3Forced defrost will finish if certain conditions are satisfied.
wForced 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.
70
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MXZ-8A140VA
MXZ-8A140VA1
Type of
Switch No.
Switch
1
SW5
2
SW8
MXZ-8A140VA2
Function
No function
Switching the target
sub-cool (Heating mode)
Action by the switch operation
ON
OFF
—
—
Normal
Always
No function
—
—
—
4
No function
Demand switching
—
—
—
Capability cut
Normal
Always
function
50%
2
No function
—
—
—
3
Max. Frequency down
Active
Normal
Always
4
No function
—
—
—
5
No function
—
—
—
6
No function
—
—
—
1
No function
—
—
—
2
No function
—
—
—
3
No function
—
—
—
SW6
2
SW6
—
Target sub-cool down
1
Dip
switch
Effective timing
3
1
SW7
Page 71
3
ON
Model selection
4
1 2 3 4 5 6
5
6
1
SW9
2
1
SW10
2
LEV opening setting
function for stopping
unit during heating
operation
Switching function of
defrosting prohibited
time
Switching the Input
Current Limit Level
During the FAN or COOL
mode, and thermo - OFF in
heating operation, set the
opening of liner expansion
valve on branch box
Changed
Normal
Always
60 minutes
30 minutes
(Normal)
Always
3 A down
Normal
Before turning
the power on
Active
Inactive
While unit stopping
71
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Page 72
MXZ-8A140VA3
Type of
Switch No.
Switch
1
SW5
No function
Switching the target
2
sub-cool (Heating mode)
SW8
Effective timing
—
Target sub-cool down
Normal
Always
3, 4
No function
—
—
—
5, 6
No function
Demand switching
—
—
—
Normal
Always
1
SW7
Action by the switch operation
ON
OFF
—
—
Function
function
Capability cut
50%
2
No function
—
—
—
3
Max. Frequency down
Active
Normal
Always
4
No function
—
—
—
5
No function
—
—
—
6
No function
—
—
—
1
No function
—
—
—
2
No function
—
—
—
3
No function
—
—
—
1
Dip
switch
2
SW6
SW6
3
ON
4
Model selection
5
1 2 3 4 5 6 7 8
6
7
8
LEV opening setting
function for stopping
unit during heating
operation
Switching function of
defrosting prohibited
time
1
2
SW9
3
Switching the Input
Current Limit Level
4
During the FAN or COOL
mode, and thermo - OFF in
heating operation, set the
opening of liner expansion
valve on branch box
Changed
Normal
Always
60 minutes
30 minutes
(Normal)
Always
3 A down
Normal
Before turning
the power on
Active
Inactive
While unit stopping
(2) Function of connector
Types
Connector
Function
Connector
CN31
LEV opening function
(at start-up)
Action by Pin short operation
Pin 1-2 Short
Pin 2-3 Short
Open a little bit
Normal
72
Effective timing
When power supply ON
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Page 73
<Outdoor unit operation monitor function>
Digital indicator LED3 displays 2 digit number or code to inform operation condition and the meaning of error code by
controlling DIP SW2 on outdoor controller.
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 LED3 working details>
(Be sure that 1 to 6 in the SW2 are set to OFF.)
(1) Display when the power supply is ON.
When the power supply is 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
LED3
(Initial setting)
1 2 3 4 5 6
The tens digit : Operation mode
Display
Operation Model
O
C
H
d
OFF / FAN
COOLING / DRY
HEATING
DEFROSTING
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.
The ones digit : Relay output
Warming-up
Display
Compressor
0
1
2
3
4
5
6
7
8
A
—
—
—
—
—
—
—
—
ON
ON
Compressor
4-way valve
Solenoid valve
(SV1, 2)
—
—
—
—
ON
ON
ON
ON
—
—
—
—
ON
ON
—
—
ON
ON
—
ON
—
ON
—
ON
—
ON
—
ON
—
—
(3) When the display blinks
Inspection code is displayed when compressor stops due to the work of protection devices.
Display
0
Inspection unit
Outdoor unit,
Branch box unit
1
Indoor unit
Display Contents to be inspected (During operation)
Discharge temperature fault
U2
Low-discharge superheating fault, Erroneous connection of refrigerant pipes or the
U7
connecting wires
High pressure fault (63H operates)
U1
Low pressure fault (63L operates)
UL
Abnormality of power modules
U6
Compressor overcurrent shutoff (Start up locked)
UF
Current sensor fault (P. B.)
UH
Compressor overcurrent shutoff fault
UP
Discharge pipe/compressor thermistor (TH4) open or short-circuit
U3
Outdoor unit thermistors (TH3, TH6, TH7, and H8), 63HS, and branch box thermistors
U4
open or short-circuit
HEATSINK temperature fault
U5
Abnormality in outdoor fan motor
U8
Voltage fault, current sensor fault (N. F.)
U9
Forced compressor stop
(Overlap malfunction of drain pump in indoor unit and linear expansion valve in branch box.)
PA
Display
F3
F5
F9
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.
Branch box/outdoor communication error (Signal receiving error) (Outdoor unit)
E8
Indoor/branch box communication error (Signal receiving error) (Branch box)
Branch box/outdoor communication error (Transmitting error) (Outdoor unit)
E9
Indoor/branch box communication error (Transmitting error) (Branch box)
• Miswiring of indoor - branch box/branch box - outdoor unit connecting wire
EA
• Too many indoor units/branch box are in the system.
Miswiring of indoor - branch box/branch box - outdoor unit connecting wire(converse wiring or disconnection)
Eb
Startup time over
Ec
E0~E7 Communication error except for outdoor unit
73
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SW2 setting
ON
Page 74
Explanation for display
Display detail
Pipe temperature / Liquid(TH3)
– 40~90
1 2 3 4 5 6
Discharge temperature (TH4)
3~217
ON
1 2 3 4 5 6
ON
Unit
– 40~90
(When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example)
When –10:;
0.5 secs. 0.5secs. 2 secs.
10
:
3~217
(When the discharge thermistor detects 100: or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example)
When 105:;
0.5 secs. 0.5secs. 2 secs.
1
05
:
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.)
(Example) When 42500 times (425 ✕100 times);
0.5 secs. 0.5secs. 2 secs.
4
25
100 times
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. 0.5secs. 2 secs.
2
45
10 hours
Step
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Compressor integrating operation times
0~9999
1 2 3 4 5 6
ON
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. 0.5secs. 2 secs.
1
25
Hz
0~500
(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. 0.5secs. 2 secs.
1
50
Pulse
A
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
LEV opening pulse
0~500
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
unit
unit
unit
unit
unit
unit
unit
unit
1
2
3
4
5
6
7
8
SW1
4 5 6
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
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
74
Code
display
Code
display
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SW2 setting
ON
Page 75
Explanation for display
Display detail
Pipe temperature / Liquid(TH3) on error
occurring
– 40~90
1 2 3 4 5 6
ON
Compressor temperature (TH4) or
discharge temperature (TH4) on error
occurring
3~217
– 40~90
(When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example)
When –15:;
0.5 secs. 0.5secs. 2 secs.
15
3~217
(When the temperature is 100: or more, the
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example)
When –15:;
0.5 secs. 0.5secs. 2 secs.
1 2 3 4 5 6
1
ON
Unit
:
:
30
Compressor operating current on error
occurring
0~50
0~50
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. 0.5secs. 2 secs.
2
45
A
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Code
display
Code
display
1 2 3 4 5 6
Minute
ON
1 2 3 4 5 6
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. 0.5secs. 2 secs.
1
05
Test run elapsed time
0~120
Capacity code of indoor unit (Qj)
ON
1 2 3 4 5 6
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
Minute
The capacity code of indoor unit is displayed.
SW1
4 5 6
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
75
Code
display
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SW2 setting
ON
Page 76
Explanation for display
Display detail
Capacity setting display
Unit
Displayed as an outdoor capacity code.
Capacity
MXZ-8A140VA
1 2 3 4 5 6
Outdoor unit setting information
Code
display
Code
25
• The tens digit (Total display for applied setting)
Setting details
Display details
ON
1 2 3 4 5 6
H·P / Cooling only
0 : H·P
Single phase / 3 phase
0 : Single phase 2 : 3 phase
• The ones digit
Setting details
1 : Cooling only
Code
display
Display details
Defrosting switch 0 : Normal 1 : For high humidity
(Example) MXZ-8A140VA, “00” is displayed.
Indoor pipe temperature / Liquid
– 39~88
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
SW1
4 5 6
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
Indoor pipe temperature / Cond. / Eva.
SW1
Indoor
4 5 6
– 39~88
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
Branch box pipe temperature / gas
– 39~88
SW1
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
1 2 3 4 5 6
5
0
0
1
1
0
0
1
1
6
0
0
0
0
1
1
1
1
:
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
Targeted evaporating temperature : ETm – 39~88
(Cooling)
(When the temperature is 0: or less, “–” and
Targeted high pressure : Pdm (Heating)
temperature are displayed by turns.)
– 39~88
Indoor room temperature
8~39
ON
4
0
1
0
1
0
1
0
1
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
:
of/f
8~39
SW1
4 5 6
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
:
76
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SW2 setting
Page 77
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
ON
1 2 3 4 5 6
ON
Explanation for display
Display detail
Indoor setting temperature
17~30
Unit
17~30
SW1
4 5 6
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
:
Outdoor pipe temperature / Cond./
Eva. (TH6)
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
Outdoor temperature (TH7)
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
1 2 3 4 5 6
ON
1 2 3 4 5 6
Outdoor heatsink temperature (TH8)
– 40~200
– 40~200
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
(When the thermistor detects 100: or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
ON
1 2 3 4 5 6
ON
Discharge superheat. SHd
0~255
0~255
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
1 2 3 4 5 6
ON
Sub-cool. SC (cooling mode)
0~130
0~130
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by turns.)
:
°C
°C
1 2 3 4 5 6
Input current of outdoor unit
0~500
(When it is 100 or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
ON
0.1 A
1 2 3 4 5 6
High pressure 63HS
0~500
(When it is 100 or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(0~4.9MPa)
ON
1 2 3 4 5 6
ON
Targeted operation frequency
0~255
0.1 of/f
0~255
(When it is 100Hz or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Hz
180~370
(When it is 100V or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
V
1 2 3 4 5 6
ON
DC bus voltage
180~370
1 2 3 4 5 6
77
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SW2 setting
Page 78
Explanation for display
Display detail
Target Sub-cool (Cooling mode) : SCm
Unit
0~255
ON
:
1 2 3 4 5 6
ON
Error postponement code history (2)
of outdoor unit
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
Code
display
Error postponement code history (3)
of outdoor unit
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
Code
display
Error code history (3) (Oldest)
Alternate display of abnormal unit number and code
When no error history, “0” and “–“ are displayed by
turns.
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
Error thermistor display
3:
7:
8:
23 :
63 :
ON
1 2 3 4 5 6
ON
When there is no error thermistor,
“–“ is displayed.
Operation frequency on error occurring
0~255
1 2 3 4 5 6
ON
Fan step on error occurring
0~10
Outdoor pipe temperature /Liquid (TH3)
Outdoor outside temperature (TH7)
Outdoor radiator panel (TH8)
Branch box pipe temperature / Gas (TH–A~E)
High pressure sensor (63HS)
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. 0.5secs. 2 secs.
1
25
Code
display
Code
display
Hz
0~10
Step
1 2 3 4 5 6
LEV opening pulse on error occurring
SW1
0~500
ON
1 2 3 4 5 6
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
Indoor room temperature
on error occurring
8~39
ON
1 2 3 4 5 6
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
4
0
1
0
1
0
1
0
1
5
0
0
1
1
0
0
1
1
6
0
0
0
0
1
1
1
1
0~500
(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. 0.5secs. 2 secs.
1
30
Pulse
8~39
SW1
4 5 6
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
:
78
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SW2 setting
Page 79
Explanation for display
Display detail
Indoor pipe temperature / Liquid on
error occurring
SW1
4 5 6
– 39~88
ON
1 2 3 4 5 6
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
Indoor pipe temperature / Cond./ Eva.
on error occurring
SW1
– 39~88
4 5 6
ON
1 2 3 4 5 6
ON
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
Outdoor pipe temperature / Cond./ Eva.
(TH6) on error occurring
– 39~88
1 2 3 4 5 6
ON
Outdoor outside temperature (TH7) on
error occurring
– 39~88
1 2 3 4 5 6
ON
Outdoor heatsink temperature (TH8) on
error occurring
– 40~200
1 2 3 4 5 6
ON
Discharge superheat on error occurring
SHd
0~255
1 2 3 4 5 6
Sub-cool on error occurring. SC
0~130
– 39~88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When –15°C; 0.5 secs. 0.5secs. 2 secs.
15
– 39~88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When –15°C; 0.5 secs. 0.5secs. 2 secs.
15
– 39~88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When –15°C; 0.5 secs. 0.5secs. 2 secs.
15
– 39~88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When –15°C; 0.5 secs. 0.5secs. 2 secs.
15
– 40~200
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
0~255
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
(Example)
When 150°C; 0.5 secs. 0.5secs. 2 secs.
1
50
0~130
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
(Example)
When 115°C; 0.5 secs. 0.5secs. 2 secs.
1
15
ON
1 2 3 4 5 6
79
Unit
:
:
:
:
:
:
:
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SW2 setting
Page 80
Explanation for display
Display detail
Thermostat-on time until error stops
0~999
ON
4
1 2 3 4 5 6
Target rotation of outdoor fan motor
Unit
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. 0.5secs. 2 secs.
Minute
15
0~999
ON
rpm
1 2 3 4 5 6
Sub-cool (Heating mode)
ON
1 2 3 4 5 6
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
0~130
SW1
4 5 6
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
Code of the difference between room
temperature and set temperature
("∆Tj": 0–99)
■Tens digit of code: current ∆Tj
■Units digit of code: ∆Tj a minute
ago
ON
1 2 3 4 5 6
:
Code of the difference between room temperature and
set temperature ("∆tj")
∆tj
0
1
2
3
4
5
6
7
8
9
Cooling
∆tj [ –0.5
–1.0 < ∆tj [ –0.5
–0.5 < ∆tj [ –0.5
0.0 < ∆tj [ 0.0
0.5 < ∆tj [ 0.5
1.0 < ∆tj [ 1.0
1.5 < ∆tj [ 0.5
2.0 < ∆tj [ 2.0
2.5 < ∆tj [ 2.5
3.0 < ∆tj [ 3.0
SW setting (1-4, 5, 6)
000
100
010
110
001
101
011
111
U9 Error status during the Error
postponement period
ON
1 2 3 4 5 6
Heating
∆tj = room temp. – Set temp. ∆tj = Set temp. – room temp.
∆tj [ –0.5
–0.5 < ∆tj [ 0.0
0.0 < ∆tj [ 0.5
0.5 < ∆tj [ 1.0
1.0 < ∆tj [ 1.5
1.5 < ∆tj [ 2.0
2.0 < ∆tj [ 2.5
2.5 < ∆tj [ 3.0
3.0 < ∆tj [ 3.5
3.5 < ∆tj
Target unit
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Indoor unit 7
Indoor unit 8
Description
Normal
Overvoltage error
Undervoltage error
T phase interruption error
Abnormal power synchronous signal
PFC error
(Overvoltage / Undervoltage / Overcurrent)
Detection point
—
Power circuit board
Controller circuit board
Controller circuit board
Power circuit board
Power circuit board
W Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
T phase interruption (04) + PFC error (10) = 14
80
Code
display
Display
00
01
02
04
08
10
Code
display
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07.8.24 2:08 PM
Page 81
<Branch box unit operation monitor function>
[When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to branch box 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
SW2 setting
Explanation for display
Display detail
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 is ON.
When the power supply is ON, blinking displays by turns.
Wait for 2 minutes at the longest.
(2) When the display lights (Normal operation)
1The number of connected indoor units to this branch box (0 - 5)
1 second
interval
SW2
(Lighting)
ON
LED1
(Initial setting)
1 2 3 4 5 6
ON
Pipe temperature / Liquid(TH3)
– 40~90
1 2 3 4 5 6
Discharge temperature (TH4)
3~217
ON
1 2 3 4 5 6
ON
– 40~90
(When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example)
When –10:;
0.5 secs. 0.5secs. 2 secs.
10
:
3~217
(When the discharge thermistor detects 100: or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example)
When 105:;
0.5 secs. 0.5secs. 2 secs.
1
05
:
Output step of outdoor FAN
0~15
0~15
Unit number of this branch box
1~2
1 or 2
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. 0.5secs. 2 secs.
1
25
Step
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
LEV-A opening pulse
0~500
0~500
(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. 0.5secs. 2 secs.
1
50
ON
1 2 3 4 5 6
81
code
display
.Hz
Pulse
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SW2 setting
ON
Page 82
1 2 3 4 5 6
LEV-C opening pulse
0~500
ON
1 2 3 4 5 6
LEV-D opening pulse
0~500
ON
1 2 3 4 5 6
LEV-E opening pulse
0~500
ON
1 2 3 4 5 6
ON
Explanation for display
Display detail
LEV-B opening pulse
0~500
Unit
0~500
(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. 0.5secs. 2 secs.
1
50
Pulse
0~500
(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. 0.5secs. 2 secs.
1
50
Pulse
0~500
(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. 0.5secs. 2 secs.
1
50
Pulse
0~500
(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. 0.5secs. 2 secs.
1
50
Pulse
Capacity setting indoor-A
0~14
Code display
(Not Qj)
Rated
capacity
2
22
3
25
4
28
5
32
6
35
7
40
8
45
9
50
10
56
11
60
12
71
13
80
Code
display
1 2 3 4 5 6
ON
Capacity setting indoor-B
0~14
Code
display
1 2 3 4 5 6
ON
Capacity setting indoor-C
0~14
1 2 3 4 5 6
ON
Capacity setting indoor-D
0~14
1 2 3 4 5 6
ON
Capacity setting indoor-E
0~14
1 2 3 4 5 6
ON
1 2 3 4 5 6
Indoor pipe temperature / Liquid
TH2
Indoor-A
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
82
Code
display
Code
display
Code
display
:
OC316D--3.qxp
07.8.24 2:08 PM
SW2 setting
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Page 83
Explanation for display
Display detail
Unit
Indoor pipe temperature / Liquid
TH2
Indoor-B
– 35~88
– 35~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
Indoor pipe temperature / Liquid
TH2
Indoor-C
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
Indoor pipe temperature / Liquid
TH2
Indoor-D
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
Indoor pipe temperature / Liquid
TH2
Indoor-E
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
LEV-1 opening pulse
0~500
0~500
Pulse
1 2 3 4 5 6
ON
0~500
LEV-2 opening pulse
0~500
Pulse
1 2 3 4 5 6
ON
LEV-3 opening pulse
0~500
0~500
Pulse
1 2 3 4 5 6
ON
0~500
LEV-4 opening pulse
0~500
Pulse
1 2 3 4 5 6
ON
LEV-5 opening pulse
0~500
0~500
Pulse
1 2 3 4 5 6
ON
Outdoor pipe temperature / Cond./Eva.
(TH6)
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
Outdoor outside temperature (TH7)
– 39~88
– 39~88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
1 2 3 4 5 6
ON
1 2 3 4 5 6
83
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Outdoor heatsink temperature (TH8)
– 40~200
1 2 3 4 5 6
ON
Explanation for display
Display detail
SW2 setting
ON
Page 84
LEV-6 opening pulse
0~500
– 40~200
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
(When the thermistor detects 100: or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
Unit
:
0~500
Pulse
1 2 3 4 5 6
ON
LEV-7 opening pulse
0~500
0~500
Pulse
1 2 3 4 5 6
ON
LEV-8 opening pulse
0~500
0~500
Pulse
1 2 3 4 5 6
ON
High pressure o 10 (63HS)
0~500
0~500
(When it is 100 or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
of/f
1 2 3 4 5 6
ON
Input current
0~50
0~50
A
1 2 3 4 5 6
ON
Indoor pipe temperature / Cond. / Eva.
TH5 Indoor-A
– 39~88
:
1 2 3 4 5 6
ON
Indoor pipe temperature / Cond. / Eva.
TH5 Indoor-B
– 39~88
:
1 2 3 4 5 6
ON
Indoor pipe temperature / Cond. / Eva.
TH5 Indoor-C
– 39~88
:
1 2 3 4 5 6
ON
Indoor pipe temperature / Cond. / Eva.
TH5 Indoor-D
– 39~88
:
1 2 3 4 5 6
ON
Indoor pipe temperature / Cond. / Eva.
TH5 Indoor-E
– 39~88
:
1 2 3 4 5 6
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Page 85
ON
Explanation for display
Display detail
SW2 setting
Branch pipe temperature
TH-A
Unit
– 39~88
:
1 2 3 4 5 6
ON
Branch pipe temperature
TH-B
– 39~88
:
1 2 3 4 5 6
ON
Branch pipe temperature
TH-C
– 39~88
:
1 2 3 4 5 6
ON
Branch pipe temperature
TH-D
– 39~88
:
1 2 3 4 5 6
ON
Branch pipe temperature
TH-E
– 39~88
:
1 2 3 4 5 6
ON
TH1
Indoor-A
8~39
8~39
TH1
Indoor-B
8~39
8~39
TH1
Indoor-C
8~39
8~39
TH1
Indoor-D
8~39
8~39
TH1
Indoor-E
8~39
8~39
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
85
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SW2 setting
ON
Page 86
Explanation for display
Display detail
Indoor - setting temperature
16~31
Indoor-A
16~31
Indoor - setting temperature
16~31
Indoor-B
16~31
Indoor - setting temperature
16~31
Indoor-C
16~31
Indoor - setting temperature
16~31
Indoor-D
16~31
Indoor - setting temperature
16~31
Indoor-E
16~31
Unit
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
ON
:
1 2 3 4 5 6
86