Mitsubishi Electric PKFY-P50VGM-A Service manual

Add to my manuals
24 Pages

advertisement

Mitsubishi Electric PKFY-P50VGM-A Service manual | Manualzz
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
February 2009
No. OCH442
REVISED EDITION-A
TECHNICAL & SERVICE MANUAL
R410A
Indoor unit
[Model names]
PKFY-P32VHM-E
PKFY-P40VHM-E
PKFY-P50VHM-E
R407C
[Service Ref.]
PKFY-P32VHM-E
PKFY-P32VHM-ER1
PKFY-P40VHM-E
PKFY-P40VHM-ER1
PKFY-P50VHM-E
PKFY-P50VHM-ER1
R22
Revision:
• PKFY-P32/40/50VHM-ER1
are added in REVISED
EDITION-A.
• Some descriptions have
been modified.
• Plase void OCH442.
Note:
• This manual describes
only service data of the
indoor units.
• RoHS compliant products
have <G> mark on the
spec name plate.
CONTENTS
INDOOR UNIT
1. TECHNICAL CHANGES ......................... 2
2. SAFETY PRECAUTION.......................... 2
3. PART NAMES AND FUNCTIONS .......... 6
4. SPECIFICATION ..................................... 8
5. OUTLINES AND DIMENSIONS ............ 11
6. WIRING DIAGRAM ............................... 12
7. REFRIGERANT SYSTEM DIAGRAM........13
8. TROUBLESHOOTING .......................... 13
9. DISASSEMBLY PROCEDURE ............. 21
PARTS CATALOG (OCB442)
1
TECHNICAL CHANGES
PKFY-P32VHM-E
PKFY-P40VHM-E
PKFY-P50VHM-E
PKFY-P32VHM-ER1
PKFY-P40VHM-ER1
PKFY-P50VHM-ER1
1. INDOOR CONTROLLER BOARD (I.B.) has been changed. (S/W version up)
2. Fan speed has been changed. (4 speed → 3 speed)
3. Heat exchanger has been changed.
PKFY-P32VHM-E
PKFY-P40VHM-E
PKFY-P50VHM-E
Service parts of room temp. thermistor (TH21) has been changed. (T7W E05 202 → R01 N20 202)
(The position to be attached has been changed. Band/PVC tube have been added.)
2
SAFETY PRECAUTION
CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R407C
Do not use the existing refrigerant piping.
Use liquid refrigerant to charge the system.
The old refrigerant and lubricant in the existing piping
contain a large amount of chlorine which may cause the
lubricant deterioration of the new unit.
If gas refrigerant is used to seal the system, the composition
of the refrigerant in the cylinder will change and performance
may drop.
Use “low residual oil piping”
Do not use a refrigerant other than R407C.
If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.
If another refrigerant (R22, etc.) is used, the chlorine in the
refrigerant may cause the lubricant deterioration.
Store the piping to be used indoors during
installation and both ends sealed until just
before brazing.
(Store elbows and other joints in a plastic bag.)
If dust, dirt, or water enters the refrigerant cycle,
deterioration of the oil and compressor trouble may result.
Use a vacuum pump with a reverse flow check valve.
The vacuum pump oil may flow back into the refrigerant
cycle and cause the lubricant deterioration.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Use ESTR , ETHER or HAB as the lubricant to
coat flares and flange connection parts.
If large amount of mineral oil enters, that can cause
deterioration of refrigerant oil etc.
[1] Cautions for service
· After recovering all the refrigerant in the unit, proceed to working.
· Do not release refrigerant in the air.
· After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.
2
[2] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder available on the market has a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)
Unit
Gravimeter
(2) Recharge in refrigerant leakage case
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
[3] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No.
Tool name
Specifications
Gauge manifold
·Only for R407C
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
Charge hose
·Only for R407C
·Use pressure performance of 5.10MPa·G or over.
Electronic scale
Gas leak detector
·Use the detector for R134a or R407C.
Adapter for reverse flow check
·Attach to vacuum pump.
Refrigerant charge base
Refrigerant cylinder
Refrigerant recovery equipment
—
—
·For R407C
·Top of cylinder (Brown)
·Cylinder with syphon
—
3
Cautions for units utilizing refrigerant R410A
Do not use the existing refrigerant piping.
Use a vacuum pump with a reverse flow check
valve.
The old refrigerant and lubricant in the existing piping
contains a large amount of chlorine which may cause the
lubricant deterioration of the new unit.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use “low residual oil piping”
If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.
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
Store the piping to be used indoors during
installation and 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.
Tools for R410A
Flare tool
Size adjustment gauge
Vacuum pump adaptor
Electronic refrigerant
charging scale
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
Do not use a charging cylinder.
If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.
If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
4
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No.
1
Tool name
Gauge manifold
Specifications
·Only for R410A
·Use the existing fitting specifications. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
2
Charge hose
·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3
Electronic scale
4
Gas leak detector
·Use the detector for R134a, R407C or R410A.
5
Adaptor for reverse flow check
·Attach to vacuum pump.
6
Refrigerant charge base
7
Refrigerant cylinder
·Only for R410A
·Top of cylinder (Pink)
·Cylinder with syphon
8
Refrigerant recovery equipment
5
3
PART NAMES AND FUNCTIONS
Filter
Indoor unit
Louver
Air intake
Vane
Air outlet
Wireless remote controller
CHECK TEST RUN display
CHECK and TEST RUN display indicate that
the unit is being checked or test-run.
MODEL SELECT display
display
Lights up while the signal is transmitted to
the indoor unit when the button is pressed.
display
Blinks when model is selected.
SET TEMP. display indicates the set desired
temperature.
CLOCK display
display
Displays the current time.
OPERATION MODE display
Operation mode display indicates which
operation mode is in effect.
TIMER display
CHECK TEST RUN
MODEL SELECT
°C
AMPM
Displays when in timer operation or when
setting timer.
“
AMPM
NOT AVAILABLE
display
The vertical direction of air flow is indicated.
ON/OFF
“
TEMP
”“
” display
Displays the order of timer operation.
”“
” display
Displays whether timer is on or off.
display
button
FAN SPEED display indicates which fan
speed has been selected.
FAN
AUTO STOP
VANE
AUTO START
SET TEMPERATURE button sets any desired
room temperature.
ON/OFF button
The unit is turned ON and OFF alternately
each time the button is pressed.
MODE
TIMER CONTROL buttons
CHECK LOUVER
h
FAN SPEED SELECT button
Used to change the fan speed.
MODE SELECT button
TEST RUN
SET
min
RESET
AUTO STOP (OFF timer): when this switch is
set, the air conditioner will be automatically
stopped at the preset time.
AUTO START (ON timer): when this switch is
set, the air conditioner will be automatically
started at the preset time.
CLOCK
Used to switch the operation mode between
cooling, drying, fan, heating and auto mode.
h and min buttons
Buttons used to set the “hour and minute” of
the current time and timer settings.
+ In case the outdoor unit is cool only type,
the heating and auto mode are not
available.
LOUVER button
Changes left/right airflow direction.
CHECK-TEST RUN button
(Not available for this model.)
Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation.
CLOCK button
RESET button
VANE CONTROL button
SET button
Used to change the air flow
6
Wired remote controller
“Sensor” indication
Display Section
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
Displayed when the remote controller
sensor is used.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
“Locked” indicator
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, the time to be
switched off is shown.
Indicates that remote controller buttons have been locked.
Identifies the current operation
“Clean The Filter” indicator
Shows the operating mode, etc.
*Multilanguage display is available.
To be displayed on when it is time to
clean the filter.
TIME SUN MON TUE WED THU FRI SAT
TIMER
Hr
ON
AFTER
Indicates that operation from the
remote controller has been prohibited by a master controller.
FUNCTION
FILTER
°F°C
°F°C
“Centrally Controlled” indicator
Timer indicators
AFTER OFF
ERROR CODE
The indicator comes on if the corresponding timer is set.
WEEKLY
SIMPLE
AUTO OFF
ONLY1Hr.
Fan Speed indicator
Shows the selected fan speed.
“Timer is Off” indicator
Indicates that the timer is off.
Up/Down Air Direction indicator
The indicator shows the direction of the outcoming airflow.
Room Temperature display
Shows the room temperature. The room
temperature display range is 8–39.
The display blinks if the temperature
is less than 8 or 39 or more.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.
“One Hour Only” indicator
Temperature Setting
Shows the target temperature.
Displayed if the airflow is set to
Low or downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off in one hour,
at which time the airflow direction
also changes.
Louver display
Indicates the action of the swing louver.
Does not appear if the louver is not
running.
(Power On indicator)
Indicates that the power is on.
Operation Section
ON/OFF button
Temperature setting buttons
Down
Fan Speed button
Up
Timer Menu button
(Monitor/Set button)
Filter
button
(<Enter> button)
Mode button (Return button)
TEMP.
ON/OFF
Set Time buttons
Check button (Clear button)
Back
Ahead
Timer On/Off button
(Set Day button)
Test Run button
MENU
BACK
PAR-21MAA
MONITOR/SET
ON/OFF
FILTER
DAY
CLOCK
CHECK TEST
OPERATION
Airflow Up/Down button
CLEAR
Louver button
(
Operation button)
To return operation
number
Opening the
lid
Built-in temperature sensor
Ventilation button
( Operation button)
To go to next operation
number
Note:
● “PLEASE WAIT” message
This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.
● “NOT AVAILABLE” message
This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).
If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as
far as any of the indoor units is equipped with the function.
7
4
SPECIFICATION
4-1. Specifications
Service Ref.
*1
*1
*1
*2
Power input
Current input
Heating capacity
(Nominal )
*3
*3
*3
Power input
Current input
External finish
External dimension H × W × D
Net weight
Heat exchanger
Fan
PKFY-P40VHM-E
PKFY-P32VHM-E
Power source
Cooling capacity
(Nominal)
Type × Quantity
External
static press.
Motor type
Motor output
Driving mechanism
Airflow rate
(Low-Mid2-Mid1-High)
kW
kcal/h
Btu/h
kcal/h
kW
A
kW
kcal/h
Btu/h
kW
A
3.6
3,100
12,300
3,150
0.03
0.30
4.0
3,400
13,600
0.03
0.30
mm
in.
kg (lb)
Pa
mmH2O
kW
m3/min
L/s
cfm
dB <A>
Noise level (Low-Mid2-Mid1-High)
(measured in anechoic room)
Insulation material
Air filter
Protection device
Refrigerant control device
Connectable outdoor unit
Liquid
Diameter of
(R410A) mm (in.)
refrigerant pipe
(R22, R407C)
Gas
(R410A) mm (in.)
(R22, R407C)
Field drain pipe size
mm (in.)
Document
Standard
Accessory
attachment
Optional parts
Remarks
1-phase 220-240V 50Hz, 1-phase 220V 60Hz
4.5
3,900
15,400
4,000
0.03
0.30
5.0
4,300
17,100
0.03
0.30
Plastic, MUNSELL (1.0Y 9.2/0.2)
295 × 898 × 249
11-5/8" × 35-3/8" × 9-13/16"
13 (29)
Cross fin (Aluminum fin and copper tube)
Line flow fan × 1
0
0
DC motor
0.030
Direct-drive
8 - 9.5 - 10.5 - 11.5
133 - 158 - 175 - 192
283 - 335 - 371 - 406
Polyethylene sheet
PP honeycomb
Fuse
LEV
R410A, R407C, R22 CITY MULTI
ø6.35 (ø1/4") Flare
ø6.35 (ø1/4") Flare
ø12.7 (ø1/2") Flare
ø12.7 (ø1/2") Flare
I.D. 16mm (5/8")
Installation Manual, Instruction Book
—
Flare
Flare
Flare
Flare
—
5.6
4,800
19,100
5,000
0.03
0.30
6.3
5,400
21,500
0.03
0.30
9 - 10 - 11 - 12
150 - 167 - 183 - 200
318 - 353 - 388 - 424
34 - 37 - 40 - 43
33 - 36 - 38 - 41
ø6.35 (ø1/4")
ø6.35 (ø1/4")
ø12.7 (ø1/2")
ø12.7 (ø1/2")
PKFY-P50VHM-E
ø6.35 (ø1/4")
ø9.52 (ø3/8")
ø12.7 (ø1/2")
ø15.88 (ø5/8")
Flare
Flare
Flare
Flare
Flare nut 3/8F, 5/8F
—
Details on foundation work, insulation work, electrical wiring, power source switch, and other items shall be referred to the
Installation Manual.
Unit converter
Note :
*1 Nominal cooling conditions
*2 Nominal cooling conditions
*3 Nominal heating conditions
kcal/h = kW × 860
Indoor :
27°CDB/19°CWB (81°FDB/66°FWB)
27°CDB/19.5°CWB (81°FDB/67°FWB)
20°CDB (68°FDB)
Btu/h = kW × 3,412
Outdoor :
35°CDB (95°FDB)
35°CDB (95°FDB)
7°CDB/6°CWB (45°FDB/43°FWB)
cfm
= m3/min × 35.31
Pipe length :
7.5 m (24-9/16 ft)
5 m (16-3/8 ft)
7.5 m (24-9/16 ft)
lb
= kg/0.4536
Level difference :
0 m (0 ft)
0 m (0 ft)
0 m (0 ft)
Installation
*Above specification data is
subject to rounding variation.
* Nominal conditions *1, *3 are subject to JIS B8615-1.
* Due to continuing improvement, above specification may be subject to change without notice.
8
Service Ref.
PKFY-P32VHM-ER1
Power source
Cooling capacity
(Nominal)
*1
*1
*1
*2
Power input *4
Current input *4
Heating capacity
(Nominal )
*3
*3
*3
Power input
Current input
External finish
External dimension H × W × D
Net weight
Heat exchanger
Fan
Type × Quantity
External
static press.
Motor type
Motor output
Driving mechanism
Airflow rate
(Low-Mid-High)
kW
kcal/h
Btu/h
kcal/h
kW
A
kW
kcal/h
Btu/h
kW
A
9 - 10.5 - 12
150 - 175 - 200
318 - 371 - 424
34 - 37 - 41
34 - 38 - 41
34 - 39 - 43
Pa
mmH2O
kW
Noise level (Low-Mid-High)
(measured in anechoic room)
Insulation material
Air filter
Protection device
Refrigerant control device
Connectable outdoor unit
Liquid
Diameter of
(R410A) mm (in.)
refrigerant pipe
(R22, R407C)
Gas
(R410A) mm (in.)
(R22, R407C)
Field drain pipe size
mm (in.)
Document
Standard
Accessory
attachment
Optional parts
Remarks
PKFY-P50VHM-ER1
9 - 10 - 11
150 - 167 - 183
318 - 353 - 388
3.6
3,100
12,300
3,150
0.04
0.40
4.0
3,400
13,600
0.03
0.30
mm
in.
kg (lb)
m3/min
L/s
cfm
dB <A>
PKFY-P40VHM-ER1
1-phase 220-240V 50Hz, 1-phase 220V 60Hz
4.5
3,900
15,400
4,000
0.04
0.40
5.0
4,300
17,100
0.03
0.30
Plastic, MUNSELL (1.0Y 9.2/0.2)
295 × 898 × 249
11-5/8" × 35-3/8" × 9-13/16"
13 (29)
Cross fin (Aluminum fin and copper tube)
Line flow fan × 1
0
0
DC motor
0.030
Direct-drive
9 - 10.5 - 11.5
150 - 175 - 192
318 - 371 - 406
ø6.35 (ø1/4")
ø6.35 (ø1/4")
ø12.7 (ø1/2")
ø12.7 (ø1/2")
Flare
Flare
Flare
Flare
Polyethylene sheet
PP honeycomb
Fuse
LEV
R410A, R407C, R22 CITY MULTI
ø6.35 (ø1/4") Flare
ø6.35 (ø1/4") Flare
ø12.7 (ø1/2") Flare
ø12.7 (ø1/2") Flare
I.D. 16mm (5/8")
Installation Manual, Instruction Book
—
Drain pump kit
5.6
4,800
19,100
5,000
0.04
0.40
6.3
5,400
21,500
0.03
0.30
ø6.35 (ø1/4")
ø9.52 (ø3/8")
ø12.7 (ø1/2")
ø15.88 (ø5/8")
Flare
Flare *5
Flare
Flare *5
PAC-SH75DM-E
Details on foundation work, insulation work, electrical wiring, power source switch, and other items shall be referred to the
Installation Manual.
Note :
*1 Nominal cooling conditions
*2 Nominal cooling conditions
*3 Nominal heating conditions
Unit converter
Indoor :
27°CDB/19°CWB (81°FDB/66°FWB)
27°CDB/19.5°CWB (81°FDB/67°FWB)
20°CDB (68°FDB)
kcal/h = kW × 860
Outdoor :
35°CDB (95°FDB)
35°CDB (95°FDB)
7°CDB/6°CWB (45°FDB/43°FWB)
Btu/h = kW × 3,412
Pipe length :
7.5 m (24-9/16 ft)
5 m (16-3/8 ft)
7.5 m (24-9/16 ft)
cfm
= m3/min × 35.31
Level difference :
0 m (0 ft)
0 m (0 ft)
0 m (0 ft)
lb
= kg/0.4536
*5 Connect the joint (purchased locally)
*Above specification data is
*4 Electrical characteristics of cooling are included optional drain-pump.
for R407C/R22.
subject to rounding variation.
* Nominal conditions *1, *3 are subject to JIS B8615-1.
Installation
* Due to continuing improvement, above specification may be subject to change without notice.
9
4-2. Electrical parts specifications
Service Ref.
PKFY-P32VHM-E
PKFY-P32VHM-ER1
Symbol
Parts name
PKFY-P40VHM-E
PKFY-P40VHM-ER1
PKFY-P50VHM-E
PKFY-P50VHM-ER1
Room temperature
thermistor
TH21
Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k
Liquid pipe thermistor
TH22
Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k
Gas pipe thermistor
TH23
TH24
Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k
Fuse
(Indoor controller board)
FUSE
250V 3.15A
Fan motor
MF
8-Pole Output 30W / RCOJ30-CK
Vane motor
(with limit switch)
MV
MSFBC20 DC12V
Linear expansion valve
LEV
DC12V Stepping motor drive
Port :3.2 (0~2000pulse)
Power supply terminal
block
TB2
(L, N, ) 250V 20A
Transmission terminal
block
TB5
(M1, M2, S) 250V 20A
MA remote controller
terminal block
TB15
(1, 2) 250V 10A
4-3. Sound levels
Sound level at anechoic room : Low-(Middle2-Middle1)-High
Sound level dB (A)
Service Ref.
PKFY-P32VHM-E
PKFY-P40VHM-E
PKFY-P50VHM-E
33-36-38-41
34-37-40-43
Sound level at anechoic room : Low-Middle-High
Sound level dB (A)
34-37-41
34-38-41
34-39-43
1.0m
Service Ref.
PKFY-P32VHM-ER1
PKFY-P40VHM-ER1
PKFY-P50VHM-ER1
1.0m
Measurement location
* Measured in anechoic room.
4-4. NC curves
High speed
Low speed
65.0
60.0
NC60
55.0
50.0
NC50
45.0
40.0
NC40
35.0
30.0
NC30
25.0
20.0
Approximate minimum
audible limit on
continuous noise
NC20
15.0
10.0
63
125
250
500
1k
2k
4k
OCTAVE BAND CENTER FREQUENCIES(Hz)
8k
70.0
High speed
Low speed
65.0
60.0
NC60
55.0
50.0
NC50
45.0
40.0
NC40
35.0
30.0
NC30
25.0
20.0
Approximate minimum
audible limit on
continuous noise
NC20
15.0
10.0
63
125
250
500
1k
2k
4k
OCTAVE BAND CENTER FREQUENCIES(Hz)
10
8k
PKFY-P50VHM-E PKFY-P50VHM-ER1
External static pressure : 0Pa
Power source : 220,230,240V, 50Hz / 220V, 60Hz
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20MPa
70.0
PKFY-P32, 40VHM-ER1
External static pressure : 0Pa
Power source : 220,230,240V, 50Hz / 220V, 60Hz
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20MPa
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20MPa
PKFY-P32, 40VHM-E
External static pressure : 0Pa
Power source : 220,230,240V, 50Hz / 220V, 60Hz
70.0
High speed
Low speed
65.0
60.0
NC60
55.0
50.0
NC50
45.0
40.0
NC40
35.0
30.0
NC30
25.0
20.0
Approximate minimum
audible limit on
continuous noise
NC20
15.0
10.0
63
125
250
500
1k
2k
4k
OCTAVE BAND CENTER FREQUENCIES(Hz)
8k
0
16
28.5
41
78.5
91
103.5
116
166
178.5
203.5
232.5
253.5
77-:5.1
Tapping
screw hole
A
43
56
394
12.5
449
C
Knockout hole for piping
291.5
265
278.3
56
4-:9 Bolt hole
69
125
Min.7
250mm or greater with optional
drain pump installation.
372.3
356.3
327.5
43
46
56
238
213
46
60
43
B
D
Mount board
Knockout hole
for left piping
Left side
:65~:80
231.5
Knockout hole
for lower piping
273.2
C
688
898
192
612
B
Mount board
Terminal block for
MA-remote controller
Terminal block for transmission
Emergency operation switch
(cooling/heating)
Receiver
5
A
Terminal block for power supply
Knockout hole
for right piping
249
Right side
Drain hose
:16
O.D.
Size
P32
P40 P50VHM-ER1 P50VHM-E
Refrigerant pipe : :6.35 :6.35 / :9.52
Liquid pipe Flared connection : 1/4F 1/4F / 3/8F
Refrigerant pipe : :12.7 :12.7 / :15.88
Gas pipe Flared connection : 1/2F 1/2F / 5/8F
DEFROST/STAND BY lamp
169
158
184
155
Front side
Top side
Operation lamp
Knockout hole
for lower piping
Under side
457 Gas pipe 539 Liquid pipe 610 Drain hose Front side (Grille open)
599
Louver (manual)
Vane (auto)
387
PKFY-P32, 40, 50VHM-E
PKFY-P32, 40, 50VHM-ER1
128.5
153.5
21.8
0
20
32.7
53.5
66
Indoor unit outline
:65~:80
55
55mm or greater with left
or rear left pipng or drain
pump installation.
Sleeve
Through hole
(purchased locally)
Min.150
Center measurement hole :2.5
0
15
0
15
6
225
200
174
58
3.8
70
0
59
Min.50
550mm or greater with optional
Min.220
drain pump installation.
281
6
70
43
125
115
140
167
180.3
193.5
Min.50
Min.250
Required space (Indoor unit)
200
225
238
265
291.5
327.5
356.3
372.3
11
449
197
295
8
5
OUTLINES AND DIMENSIONS
Unit : mm
6
WIRING DIAGRAM
PKFY-P32, 40, 50VHM-E
PKFY-P32, 40, 50VHM-ER1
SYMBOL
I.B
CN32
CN51
CN52
BZ
DSA
FUSE
LED1
LED2
SW2
SW3
SW4
SWE
X1
MOV 01.02
LEV
MF
MV
TB2
TB5
TB15
NAME
NAME
SYMBOL
INDOOR CONTROLLER BOARD
THERMISTOR ROOM TEMP. DETECTION
TH21
(0°C/15kΩ, 25°C/5.4kΩ)
CONNECTOR REMOTE SWITCH
CENTRALLY CONTROL
PIPE TEMP. DETECTION / LIQUID
TH22
(0°C/15kΩ, 25°C/5.4kΩ)
REMOTE INDICATION
BUZZER
PIPE TEMP. DETECTION / GAS1
TH23
(0°C/15kΩ, 25°C/5.4kΩ)
SURGE ABSORBER
FUSE (T3.15AL 250V)
TH24
PIPE TEMP. DETECTION / GAS2
(0°C/15kΩ, 25°C/5.4kΩ)
POWER SUPPLY (I.B)
POWER SUPPLY (I.B)
ADDRESS BOARD
A.B
SWITCH CAPACITY CODE
SWA SWITCH
FAN SPEED SELECTOR
MODE SELECTION
SW1
MODE SELECTION
MODEL SELECTOR
SW11
ADDRESS SETTING 1s DIGIT
DRAIN PUMP (TEST MODE)
SW12
ADDRESS SETTING 10ths DIGIT
AUX.RELAY DRAIN PUMP (OPTION)
SW14
BRANCH No.
VARISTOR
S.B
SWITCH BOARD
SWE1 EMERGENCY OPERATION(HEAT)
LINEAR EXPANSION VALVE
FAN MOTOR
SWE2 EMERGENCY OPERATION(COOL)
VANE MOTOR
W.B
PCB FOR WIRELESS REMOTE CONTROLLER
TERMINAL POWER SUPPLY
LED1 LED(OPERATION INDICATOR: GREEN)
TRANSMISSION
LED2 LED(OPERARTION FOR HEATING : ORANGE )
BLOCK
MA-REMOTE CONTROLLER
RU
RECEIVING UNIT
DRAIN PUMP (OPTION)
DP
DRAIN FLOAT SWITCH (OPTION)
FS
TB2
RED
L
BLU
N
GRN/YLW
MV
LEV
M
1~
M
M
FUSE
CNP
3 (BLU)
MOV2
MOV1
DSA
X1
3
5 VANE 1
CN151
(WHT)
U
LED1
U
1
LDSWE(A)
(BLU)
5
1
BRN
RED
BLU
ORN
YLW
WHT
5
6
CNRU
(WHT)
6
1
LEV
CN60
(YLW)
BZ
SWE
FLOAT SW
CN4F
(WHT) 4
OFF ON
When attaching drain
pump(option), remove
the jumper connector
CN4F and fit the drain
float switch (FS).
TH24
FS
FLOAT SW
CN4F
(WHT)
4
TH22
t
○
t
ON
OFF
TB15
1
9
0 1
9
10ths
DIGIT
ADDRESS
CN82
(RED)
SW14
0 1
E
1s
DIGIT
F0 1 2
3456
TO OUTDOOR UNIT
BC CONTROLLER
REMOTE CONTROLLER
DC24-30V
2 3
2
M1
M2
S
(SHIELD)
TB5
3
2
1
1 2 3 4 5 6 7 8 9 10 SWA
SW12 SW11
2 3
TO MA-REMOTE
CONTROLLER
DC8.7-13V
ADDRESS
CN43
(RED)
SW1
BCD
3
7 8
See fig.1
8
7 8
1
ORN
12345678
ORN
BLU
BLU
1234
MA-REMOCON
CN3A
(BLU)
5 6
SW3
BRANCH
No.
A.B
LED on indoor board for service
Mark
Meaning
LED1
Main power supply
LED2
Power supply for
MA-Remote controller
Function
Main power supply (Indoor unit: 220-240V)
Power on → Iamp is lit
Power supply for MA-Remote controller
on → Iamp is lit
NOTES:
1. At servicing for outdoor unit,always follow the wiring diagram of outdoor unit.
2. In case of using MA-Remote controller, please connect to TB15.
(Remote controller wire is non-polar.)
3. In case of using M-NET, please connect to TB5. (Transmission line is non-polar.)
4. Symbol [S] of TB5 is the shield wire connection.
5. Symbols used in wiring diagram above are,
: terminal block,
:connecter.
6. The setting of the SW2 dip switches differs in the capacity. For the detail, refer to the fig. 1.
12
SW2
P32
ON
OFF
P40
ON
OFF
P50
ON
OFF
TH21
4
SW4
PKFY-P·VHM-ER1
Models
○
4
M-NET
SW2
CN2M(BLU) ON
OFF
1
2
123456
1
Models
SW2
P32
ON
P40
OFF
123456
P50
○
t
When attaching drain pump
(option)
<fig.1> PKFY-P·VHM-E
t
○
LIQUID/GAS1
CN44
3
1
(WHT)
ADDRESS
4
1
CN42
1
4 (RED) 1 INTAKE
CN20
(RED) 2 1
LED2
ADDRESS
CN81
(RED)
S.B
TH23
CN32
(WHT)
8
SWE1 SWE2
LED1
1
GAS2
CN2G
(BLK) 2 1
DC311~339V
RECTIFICATION
W.B
CN52
(GRN)
5 CN51 1
(WHT)
CN24
(YLW)
2 1
1
LD101(B)
RU
I.B
CND
(BLK)
GRN
YLW
ORN
RED
BRN
BLK
WHT
YLW
BLU
1
6 1
LD SWE(B)
LED2
5 6
3
FAN
CNMF
(WHT)
6
DP
4
1
3
TO NEXT
INDDOR
UNIT
789A
RED
MS
3~
POWER SUPPLY
~/N220-240V 50Hz
220V 60Hz
RED
BLU
BLK
MF
FUSE BREAKER
PULL (16A)
(16A)
BOX
123456
123456
123456
7
REFRIGERANT SYSTEM DIAGRAM
PKFY-P32, 40, 50VHM-E
PKFY-P32, 40, 50VHM-ER1
Gas pipe thermistor TH23
Strainer (#50mesh)
Gas pipe
Gas pipe thermistor TH24
Flare connection
Liquid pipe thermistor TH22
Heat exchanger
Liquid pipe
Linear expansion valve
Strainer1 (#50mesh)
Strainer2 (#100mesh)
Strainer (#100mesh)
Room temparature thermistor TH21
Unit : mm (inch)
Item
8
Service Ref. PKFY-P32VHM-E(R1)
PKFY-P40VHM-E(R1)
PKFY-P50VHM-ER1
PKFY-P50VHM-E
Gas pipe
:12.7(1/2)
:12.7(1/2)
:12.7(1/2)/:15.88(5/8)
Liquid pipe
:6.35(1/4)
:6.35(1/4)
:6.35(1/4)/:9.52(3/8)
TROUBLESHOOTING
8-1. HOW TO CHECK THE PARTS
PKFY-P32, 40, 50VHM-E
PKFY-P32, 40, 50VHM-ER1
Parts name
Check points
Room temperature
thermistor (TH21)
Liquid pipe temperature
thermistor (TH22)
Gas pipe temperature
thermistor (TH23 ,24)
Vane motor (MV)
Red
Abnormal
Open or short
Normal
Abnormal
Open or short
Orange Green
Yellow
Orange
Blue
Red
Brown
350 ± 7%
Refer to 8-1-3.
Linear expansion
valve (LEV)
CN60
White
Refer to the next page for the details.
-
-
-
-
Brown-Red Brown-Orange Brown-Yellow Brown-Green
M
Fan motor (MF)
LEV
Normal
4.3k~9.6k
Measure the resistance between the terminals using a tester. (Coil temperature 25)
Yellow
Brown
Connect pin No.
Disconnect the connector then measure the resistance using a tester.
(At the ambient temperature 10~30)
1
2
3
4
5
6
Disconnect the connector then measure the resistance value using a tester.
(Coil temperature 20)
Normal
Abnormal
(1)-(5)
(2)-(6)
(3)-(5)
(4)-(6)
White-Red Yellow-Brown Orange-Red Blue-Brown
Open or short
200 ± 10%
13
8-1-1. Thermistor
<Thermistor Characteristic graph>
Thermistor for
lower temperature
< Thermistor for lower temperature >
0:
10:
20:
25:
30:
40:
1
273+t
40
Resistance (K)
Thermistor R0=15k" ± 3%
Fixed number of B=3480 ± 2%
Rt=15exp { 3480(
50
Room temperature thermistor (TH21)
Liquid pipe temperature thermistor (TH22)
Gas pipe temperature thermistor (TH23)
(TH24)
1
)}
273
30
20
15k"
9.6k"
6.3k"
5.4k"
4.3k"
3.0k"
10
0
-20
-10
0
10 20 30
Temperature ()
40
50
8-1-2. Liner expansion valve
1 Operation summary of the linear expansion valve
• Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the indoor controller board.
• Valve position can be changed in proportion to the number of pulse signal.
<Connection between the indoor controller board and the linear expansion valve>
Controller board
DC12V
Linear expansion valve
4
M
6
5
2
1
White Red
3
Orange
Blue
Brown
6
Red
5
Drive circuit
Brown
:4
Blue
4
:4
Yellow
:3
Orange
3
:3
:2
Yellow
2
:2
:1
White
1
:1
Connector(CN60)
14
<Output pulse signal and the valve operation>
Output
Output
(Phase)
1
2
3
4
{1
ON
OFF
OFF
ON
{2
ON
ON
OFF
OFF
{3
OFF
ON
ON
OFF
{4
OFF
OFF
ON
ON
Open
C
Valve position (capacity)
D
Close
A
E
Close
• When linear expansion valve operation stops, all output phase
become OFF.
• At phase interruption or when phase does not shift in order, motor
does not rotate smoothly and motor will lock and vibrate.
• When the switch is turned on, 2200 pulse closing valve signal will
be sent till it goes to point A in order to define the valve
position.
2 Linear expansion valve operation
Open
Closing a valve : 1 → 2 → 3 → 4 → 1
Opening a valve : 4 → 3 → 2 → 1 → 4
The output pulse shifts in above order.
• When the valve moves smoothly, there is no noise or vibration
occurring from the linear expansion valves; however, when the
pulse number moves from E to A or when the valve is locked,
more noise can be heard than in a normal situation.
• Noise can be detected by placing the ear against the screw
driver handle while putting the screw driver tip to the linear
expansion valve.
Outdoor unit R410A model
: 1400 pulse
Outdoor unit R22/R407C model : 2000 pulse
Opening a valve
all the way
Pulse number
B
Extra tightening (200~800 pulse)
3 Trouble shooting
Symptom
Check points
Countermeasures
Operation circuit
failure of the micro
processor
Disconnect the connector on the controller board, then con- Exchange the indoor connect LED for checking.
troller board in case of
6
5
drive circuit failure.
4
3
2
1
1k LED
When power is turned on, pulse signals will be output for 10
seconds. There must be some defects in the operation circuit
if the LED does not light while the signals are output or keeps
lighting even after the signals stop.
Linear expansion
valve mechanism is
locked.
Motor will idle and make a ticking noise when the motor is
Exchange the linear expanoperated while the linear expansion valve is locked. This tick- sion valve.
ing sound is the sign of the abnormality.
Short or breakage
Measure the resistance between each coil (white-red, yellow- Exchange the linear expanof the motor coil of
brown, orange-red, blue-brown) using a tester. It is normal if sion valve.
the linear expansion the resistance is in the range of 200 ±10%.
valve
Valve does not close To check the linear expansion valve, operate the indoor unit If large amount of refrigercompletely.
in fan mode and at the same time operate other indoor units ant is leaked, exchange
the linear expansion valve.
in cooling mode, then check the pipe temperature <liquid
pipe temperature> of the indoor unit by the
outdoor multi controller board operation
monitor. During fan operation, linear expansion valve is closed completely and if there
Thermistor
(Liquid pipe) is any leaking, detecting temperature of
the thermistor will go lower. If the detected
Linear
temperature is much lower than the temexpansion
valve
perature indicated in the remote controller,
it means the valve is not closed all the way.
It is not necessary to exchange the linear expansion valve, if
the leakage is small and not affecting normal operation.
Wrong connection
of the connector or
contact failure
Check the color of lead wire and missing terminal of the con- Disconnect the connector
nector.
at the controller board,
then check the continuity.
15
8-1-3. DC Fan motor (fan motor/indoor controller circuit board)
Check method of DC fan motor (fan motor/indoor controller circuit board)
Notes
· High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service.
· Do not pull out the connector (CNMF) for the motor with the power supply on.
(It causes trouble of the indoor controller circuit board and fan motor.)
Self check
Symptom : The indoor fan cannot turn around.
Wiring contact check
Contact of fan motor connector (CNMF)
Is there contact failure?
Wiring recovery
Yes
No
Power supply check (Remove the connector (CNMF))
Measure the voltage in the indoor controller circuit board.
TEST POINT : VDC (between 1 (+) and 3 (-) of the fan connector): VDC DC310~340V
TEST POINT : VCC (between 4 (+) and 3 (-) of the fan connector): VCC DC15V
Is the voltage normal?
Indoor controller board fuse check
No
No
Is the fuse normal?
Replace the fuse
Yes
OK
Check the operation
Yes
Sensor signal check
Measure the voltage between CNMF and
DC 0V
and DC 15V in the indoor controller circuit board.
No
Does the voltage repeat
DC 0V and DC 15V?
NG
Replace indoor controller board.
OK
Check the operation
END
NG
Replace the fan motor
Yes
Replace indoor
controller board
Replace the fan motor
OK
OK
Check the operation
END
Check the operation
NG
NG
Replace the fan motor.
Replace indoor controller board.
16
END
END
8-2. Function of Dip switch
PKFY-P32, 40, 50VHM-E
PKFY-P32, 40, 50VHM-ER1
Switch Pole
Operation by switch
Function
ON
OFF
1
Thermistor<Room temperature>
position
Built-in remote controller
Indoor unit
2
Filter clogging detection
Provide
Not provide
3
Filter cleaning sign
4
Fresh air intake
SW1
5
Mode
selection 6
7
2,500 hr
100 hr
Not effective
Not effective
1 2 3 4 5 6 7 8 9 10
+2
Switching remote controller display Thermo ON signal indication Fan output indication
Fan operation at Heating mode Thermo ON operation at
heating mode
Humidifier control
8
9
Auto restart function
Effective
Not effective
Power ON/OFF by breaker Effective
Not effective
Models
Models
SW2
P32
ON
P40
OFF
123456
P50
SW2
Capacity
1~6
code
switch
Under
suspension
P32
+2 It is impossible to intake
the fresh air.
Indoor controller board
SW2
ON
OFF
P40
ON
OFF
P50
ON
OFF
Before
power
supply
ON
123456
123456
123456
Heat pump/Cool only
2
Not used
—
—
3
Not used
—
—
Cooling only
Heat pump
Vane horizontal angle
Second setting +1
First setting
Changing the opening of linear
expansion valve during thermo OFF
Effective
Not effective
Heating 4 degree up
Not effective
Effective
7
Target superheat setting +2
—
—
8
Target subcool
—
—
In case of replacing the indoor controller board, make sure to set the
switch to the initial setting, which is shown below.
ON
OFF
1 2 3 4
17
SW1-7 SW1-8 Fan speed
OFF OFF Extra low
ON
OFF Low
OFF
ON Setting air flow
ON
ON Stop
Depends on SW1-7
1
+2
NOTE:
+1
PKFY-P·VHM-ER1
PKFY-P·VHM-E
SW4
Model 1~4
selection
<Initial setting>
ON
OFF
Extra low +1
SW3 4
Function
selection 5
6
Remarks
Address board
Air flow set in case of heat Low +1
thermo OFF
Setting air flow +1
10
Effective
timing
Indoor controller board
<Initial setting>
Under
suspension
ON
OFF
1 2 3 4 5 6 7 8
+1 Second setting is same as
first setting.
+2 Please do not use SW3-7,8
as trouble might be caused
by the usage condition.
Indoor controller board
Before
power
supply
ON
1
CDE
AB
789
Address board
<Initial setting>
SW14
CDE
AB
F01
789
Rotary switch
Before
power
supply
ON
23
Jumper
90 1
• To operate each indoor unit by each remote controller when installed 2 indoor
units or more are near, Pair No. setting is necessary.
.
Pair No. setting is available with the 4 patterns (Setting patterns A to D).
Make setting for J41, J42 of indoor controller board and the Pair No. of
wireless remote controller.
• You may not set it when operating it by one remote controller.
Setting for indoor unit
Cut jumper wire J41, J42 on the indoor controller board according to the
table below.
Wireless remote controller pair number:
Setting operation
Under
1. Press the SET button (using a pointed implement). Check that the
operation
remote controller's display has stopped before continuing.
or
MODEL SELECT flashes, and the model No. (3 digits) appears (steadily-lit).
2. Press the MINUTE button twice. The pair number appears flashing.
suspension
3. Press the temperature
buttons to select the pair number to set.
4. Press the SET button (using a pointed implement). The set pair number is
displayed (steadily-lit) for 3 seconds, then disappears.
Setting pattern
Indoor controller
jumper wire
Pair No. of wireless
remote controller
J41
J42
0
—
—
A
Initial setting
1
—
—
Cut
B
2
—
Cut
—
C
3
—
Cut
Cut
D
Pair No.4-9 of wireless remote controller is setting pattern D.
18
45 6
Wireless
remote
controller
Pair No.
How to set branch numbers SW14 (Series R2 only)
Match the indoor unit’s refrigerant pipe with
the BC controller’s end connection number.
Remain other than series R2 at "0".
SW11
90 1
23
J41, J42
45 6
SW14
Branch
No.
Setting
23
F01
SW12
23
SW14
<Initial setting>
78
45 6
45 6
10
Address board
How to set addresses
Example : If address is "3", remain SW12
(for over 10) at "0", and match SW11 (for 1 to 9)
with "3".
78
78
78
23
Rotary Switch
90 1
45 6
SW11
90 1
Remarks
45 6
SW12
23
SW11
1s digit
address
setting
SW12
10ths digit
address
setting
Effective
timing
Operation by switch
Switch
<Initial setting>
Pattern A
Pair No.
MODEL SELECT
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
SET
h
min
TEST RUN
SET button
Temperature
button
TEMP
ON/OFF
MODE
Model No.
RESET
CLOCK
Minute
button
8-3. TEST POINT DIAGRAM
8-3-1. Indoor controller board
PKFY-P32VHM-E
PKFY-P32VHM-ER1
PKFY-P40VHM-E
PKFY-P40VHM-ER1
PKFY-P50VHM-E
PKFY-P50VHM-ER1
CNMF
Connect to the fan motor (MF)
1-3 : DC310~340V
4-3 : DC15V
5-3 : DC0~6V
6-3 : DC0 or DC15V (Stop)
DC7.5V (Operation)
(12VDC pluse)
FUSE
3.15A 250V
CNP
Drain pump output
(DP)
1-3 : 220-240AC
CND
Power supply for
indoor controller board
1-3 : 220-240AC
LED1
Main power supply
(Indoor unit :
220-240V)
CN2M
Connect to the
terminal block (TB5)
(M-NET transmission
connecting wire)
24-30VDC (non-polar)
Power supply from
outdoor unit
CN151
Vane motor output
12VDC pluse
CNRU
Connect to the
wireless remote
controller board
(W.B)
SW2
Capacity setting
LDSWE(A)
Connect to the
wireless remote
controller board
(S.B)
SW4
Model selection
SW3
Function setting
CN52
Remote indicator
Jumper wire J41, J42
Pair No. setting for wireless
remote controller
LED2
Power supply for
MA-Remote controller
CN3A
Connected to the termial
block (TB15)
(MA-Remote controller
connecting wire)
1 - 3 : 8.7-13V DC
(Pin1 (+))
CN32
Remote switch
CN2G
Pipe temperature
thermistor
Gas2 (TH24)
CN20
Room temperature
thermistor (TH21)
CN44
Pipe temperature thermistor
1-2 : Liquid (TH22)
3-4 : Gas1 (TH23)
19
CN60
Liner expansion
valve (LEV) output
12VDC pluse output
CN4F
Drain float switch
(FS)
CN51
Centrally controlled
LD SWE (B)
Connect to the indoor
controller board (I.B)
8-3-2. Wireless remote controller board
PKFY-P32VHM-E
PKFY-P32VHM-ER1
PKFY-P40VHM-E
PKFY-P40VHM-ER1
PKFY-P50VHM-E
PKFY-P50VHM-ER1
LD101
Connect to the
indoor controller
board (I.B)
8-3-3. Address board
PKFY-P32VHM-E
PKFY-P32VHM-ER1
PKFY-P40VHM-E
PKFY-P40VHM-ER1
PKFY-P50VHM-E
PKFY-P50VHM-ER1
SW1
Function setting
1 2 3 4 5 6 7 8 9 10
BCD
78
4 56
78
789A
4 56
SW12
SW11
Address setting
10ths DIGIT
Address setting
1s DIGIT
3456
EF0 12
90 1
23
23
90 1
SW14
Branch No.
20
8
DISASSEMBLY PROCEDURE
PKFY-P32VHM-E
PKFY-P32VHM-ER1
PKFY-P40VHM-E
PKFY-P40VHM-ER1
PKFY-P50VHM-E
PKFY-P50VHM-ER1
Be careful when removing heavy parts.
OPERATION PROCEDURE
PHOTOS & ILLUSTRATIONS
1. REMOVING THE LOWER SIDE OF THE INDOOR
UNIT FROM THE INSTALLATION PLATE
Figure 1
(1) Remove the front panel.
(2) Insert the screw driver to the corner hole at both left and
right side as shown in the figure 1.
(3) Push it up, then pull down the lower side of indoor unit and
remove the hook.
Push
Corner hole
Be careful
not to damage
the airflow
adjustment
plate with the
screw driver. Push
Down
2. REMOVING THE FRONT PANEL
Photo 1
(1) Press and unlock the knobs on both sides of the front
panel and lift the front panel until it is level. Pull the hinges
forward to remove the front panel. (See Photo 2)
(2) Move the horizontal vanes in a downward direction.
(3) Remove the screw caps of the panel. Remove the screws.
(See Photo 1)
(4) Hold the lower part of both ends of the panel and pull it
slightly toward you, and then remove the panel by pushing
it upward.
Vane
Front panel
Screw caps
Photo 2
21
OPERATION PROCEDURE
PHOTOS
3. REMOVING THE INDOOR CONTROLLER BOARD
AND WIRELESS CONTROLLER BOARD
Photo 3
Screw (top cover)
(1) Remove the front panel. (Refer to 2.)
(2) Remove the room themp. thermistor TH21. (see Photo 3)
(3) Remove the electrical box covers (screw 4 × 12).
(See Photo 3)
(4) Disconnect the connectors on the indoor controller board.
(5) Remove the switch board cover.
(6) Pull out the indoor controller board toward you, then
disconnect the rest of connectors.
Remove the indoor controller board and switch board.
(7) Remove the holder of wireless controller board.
(8) Disconnect the connector of wireless controller board and
remove the wireless controller board from the holder.
Electrical box cover (top) Electrical box
Screw (side cover)
cover (side)
Room temp.
thermistor
(TH21)
Screw
(side
cover)
Nozzle assembly Switch board cover Holder of wireless
controller board
Photo 4
Indoor controller board (I.B)
Terminal
block (TB2)
Terminal
block (TB5)
Terminal
block (TB15)
Fixture
(right)
Room temp. thermistor (TH21)
Photo 5
4. REMOVING THE ELECTRICAL BOX
(1) Remove the front panel. (Refer to 2.)
(2) Remove the electrical box covers. (See Photo 3)
(3) Remove the nozzle assembly. (Refer to 5.)
(4) Disconnect the transmission wiring of TB5.
(5) Disconnect the power supply wiring of TB2.
(6) Disconnect the wiring of MA-remote controller (TB15).
(7) Disconnect the connectors on the indoor controller board.
(8) Disconnect the connector for the ground wire. (See Photo 5)
(9) Pull the disconnected lead wire out from the electrical box.
(10) Remove the screw of electrical box. (See Photo 6)
(11) Push up the upper fixture (See Photo 5) catch to remove
the box, then pull the right fixture (See Photo 4) and
remove it from the box fixture.
Fixture
(right)
Fixture (upper)
Connector for ground wire
Photo 6
Screw (Electrical box)
22
OPERATION PROCEDURE
PHOTOS
5. REMOVING THE NOZZLE ASSEMBLY (with VANE
and VANE MOTOR) AND DRAIN HOSE
Electrical box cover (side)
Electrical box cover (top)
Screw (side cover)
Screw (top cover)
Photo 7
(1) Remove the front panel (Refer to 2.).
(2) Remove the electrical box cover.
(3) Disconnect the vane motor connector (CN151) on the
indoor controller board.
(4) Remove the corner box.
(5) Pull the nozzle assembly and detach.
(6) Push the fixture and remove the drain hose.
Switch board cover
Holder of wireless
Nozzle assembly
controller board
6. REMOVING THE INDOOR FAN MOTOR AND THE
LINE FLOW FAN
(1) Remove the front panel (Refer to 2.) and the corner box
at right lower side.
(2) Remove the electrical box (Refer to 4.) and the nozzle
assembly (Refer to 5.).
(3) Remove the screws fixing the motor bed. (See Photo 8)
(4) Loosen the screw fixing the line flow fan. (See Photo 9)
(5) Remove the motor bed together with fan motor and motor
band.
(6) Release the hooks of the motor band. Remove the motor
band. Pull out the indoor fan motor.
(7) Remove the screws fixing the left side of the heat exchanger.
(See Photo 10)
(8) Lift the heat exchanger, and pull out the line flow fan to the
lower-left.
Photo 10
Motor band
Photo 8
Fan motor
Heat exchanger
Screw of the motor bed
Photo 9
Screw of the
left side of the
heat exchanger
7. REMOVING THE VANE MOTOR
Screw
(side
cover)
Screw of the
line flow fan
Photo 11
Screws of the vane
motor unit
(1) Remove the nozzle assembly. (Refer to 5.)
(2) Remove the screws of the vane motor unit, and pull out
the vane motor unit.
(3) Remove the screws of the vane motor unit cover.
(4) Remove the vane motor from the vane motor unit.
(5) Disconnect the connector from the vane motor.
Screws of the vane motor unit cover
8. REMOVING THE LIQUID PIPE THERMISTOR AND
GAS PIPE THERMISTOR
(1)
(2)
(3)
(4)
(5)
(6)
Photo 12
Gas pipe thermistor (TH23)
Gas pipe thermistor (TH24)
Remove the front panel. (Refer to 2)
Remove the electrical box cover.
Remove the motor band.
Cut the wiring fixed band.
Remove the liquid pipe thermistor and gas pipe thermistors.
Disconnect the connector (CN44) (CN2G) on the indoor
controller board. (TH22 and TH23/CN44, TH24/CN2G)
Liquid pipe thermistor (TH22)
23
OPERATION PROCEDURE
9. REMOVING THE HEAT EXCHANGER AND LEV
(1) Remove the front panel (Refer to 2.) and the corner panel
at right lower side.
(2) Remove the electrical box (Refer to 4.) and the nozzle
assembly (Refer to 5.).
(3) Remove the motor band.
(4) Remove the pipe thermistors (Refer to 8.).
(5) Disconnect the connector (CN60) on the indoor controller
board and the connector for ground wire. (See Photo 5)
(6) Remove the screws fixing the left side of the heat
exchanger. (See Photo 9)
(7) Remove the heat exchanger with LEV.
PHOTOS
Photo 13
Electrical box cover (side)
Electrical box cover (top)
Screw (side cover)
Screw (top cover)
Water cover
Screw
(side
cover)
Switch board cover
Holder of wireless
Nozzle assembly
controller board
Photo 14
Ground wire
LEV
Heat exchanger
10. REMOVING THE ROOM TEMPERATURE THERMISTOR
(1)
(2)
(3)
(4)
Remove the front panel (Refer to 2.).
Remove the electrical box cover.
Remove the room temperature thermistor.
Disconnect the connector (CN20) on the indoor controller
board.
NOTE: When room temp. thermistor is replaced, be sure
to use service parts No. R01 N20 202.
Photo 16
Photo 15
Indoor controller board (I.B)
Terminal
block (TB2)
Terminal
block (TB5)
Terminal
block (TB15)
Room temp. thermistor
(TH21)
Wire clip
Caution:
There is a case that room
temp. thermistor (TH21)
is fixed with electrical
box side cover screw.
Fixture
(right)
Room temp. thermistor (TH21)
Fixture
(right)
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN
Copyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Feb. 2009 No. OCH442 REVISED EDITION-A PDF 7
Distributed in Jul. 2008 No. OCH442 PDF 7
Made in Japan
New publication, effective Feb. 2009
Specifications subject to change without notice

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Questions and Answers

What are the precautions related to new refrigerant R407C?
Do not use the existing refrigerant piping, use liquid refrigerant to charge the system, use 'low residual oil piping', do not use a refrigerant other than R407C.
What is the filter made of?
The filter is a photocatalytic filter.
What are the available colors?
Model PKFY-P50VGM-A is available in the color White.
What is the set temperature range?
The set temperature range is 16 to 30 degree Celsius.
What is the power consumption of the outdoor unit?
The power consumption of the outdoor unit is 1.6 kW.

Related manuals

Download PDF

advertisement