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Mitsubishi Electric PKFY-P32VGM-A Service manual
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Mitsubishi Electric PKFY-P32VGM-A is a split-type, heat pump air conditioner that offers efficient and reliable temperature control for your indoor space. With its advanced features and user-friendly design, this air conditioner is an excellent choice for those seeking comfort and convenience.
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OC310A---1.qxp 06.7.7 3:48 PM Page 1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
July 2006
No. OC310
REVISED EDITION-A
Series PKFY Wall Mounted
<Indoor unit>
[Model names]
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
R410A R407C R22
[Service Ref.]
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
Revision:
• RoHS PARTS LIST is added.
• Some descriptions have been modified.
• Please void OC310.
Note:
• This manual describes only service data of the indoor units.
• RoHS compliant products have <G> mark on the spec name plate.
• For servicing of RoHS compliant products, refer to the
RoHS Parts List.
Indoor unit
CONTENTS
1. SAFETY PRECAUTION ···························2
2. PART NAMES AND FUNCTIONS············6
3. SPECIFICATIONS ····································8
4. OUTLINES AND DIMENSIONS ·············10
5. WIRING DIAGRAM·································11
6. REFRIGERANT SYSTEM DIAGRAM····12
7. TROUBLE SHOOTING ··························13
8. DISASSEMBLY PROCEDURE ··············20
9. PARTS LIST ···········································23
10. RoHS PARTS LIST ································25
OC310A---1.qxp 06.7.7 3:48 PM Page 2
1 SAFETY PRECAUTION
CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R407C
Do not use the existing refrigerant piping.
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.
Use liquid refrigerant to seal the system.
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”
If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.
Store the piping to be used during installation indoors with keep 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 ESTR , ETHER or HAB as the lubricant to coat flares and flange connection parts.
If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc.
Do not use a refrigerant other than R407C.
If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the lubricant deterioration.
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.
[1] Cautions for service
·After recovering the all 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] Refrigerant recharging
(1) Refrigerant recharging process
1 Direct charging from the cylinder.
·R407C cylinder are 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.
2
OC310A---1.qxp 06.7.7 3:48 PM Page 3
[3] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No.
Tool name
1 Gauge manifold
2 Charge hose
3 Electronic scale
4 Gas leak detector
5 Adapter for reverse flow check.
6 Refrigerant charge base.
7 Refrigerant cylinder.
8 Refrigerant recovery equipment.
Specifications
·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
—
·Use the detector for R134a or R407C.
·Attach on vacuum pump.
—
·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
—
3
OC310A---1.qxp 06.7.7 3:48 PM Page 4
Cautions for units utilizing refrigerant R410A
Do not use the existing refrigerant piping.
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.
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 a vacuum pump with a reverse flow check valve.
Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Tools for R410A
Flare tool
Size adjustment gauge
Vacuum pump adaptor
Electronic refrigerant charging scale
Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enter 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.
If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc.
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.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.
Do not use a charging cylinder.
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.
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
OC310A---1.qxp 06.7.7 3:48 PM Page 5
[1] Cautions for service
(1) Perform service after collecting 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 Gauge manifold
2 Charge hose
Specifications
·Only for R410A
·Use the existing fitting specifications. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3 Electronic scale
4 Gas leak detector
5 Adaptor for reverse flow check
6 Refrigerant charge base
7 Refrigerant cylinder
·Use the detector for R134a, R407C or R410A.
·Attach on vacuum pump.
·Only for R410A Top of cylinder (Pink)
Cylinder with syphon
8 Refrigerant recovery equipment
5
OC310A---1.qxp 06.7.7 3:48 PM Page 6
2 PART NAMES AND FUNCTIONS
●
Indoor Unit
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E Air intake
Filter Air intake grille
Guide vane
Air outlet
Auto vane
●
Wired remote controller
On the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
●
Operation buttons
Set Temperature buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
Opening the door.
TEMP.
ON/OFF
MENU
BACK MONITOR/SET
PAR-21MAA
ON/OFF
DAY
CLOCK OPERATION
FILTER
CHECK TEST
CLEAR
ON/OFF button
Fan Speed button
Filter button
(<Enter> button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
( Operation button)
To preceding operation number.
Ventilation button
( Operation button)
To next operation number.
6
OC310A---1.qxp 06.7.7 3:48 PM Page 7
● Display
For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit.
Identifies the current operation
Shows the operating mode, etc.
* Multilanguage display is supported.
“Centrally Controlled” indicator
Indicates that operation of the remote controller has been prohibited by a master controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
˚F˚C
TIME SUN MON TUE WED THU FRI SAT
TIMER Hr ON
AFTER AFTER OFF
ERROR CODE
˚F˚C
ONLY1Hr.
FUNCTION
FILTER
WEEKLY
SIMPLE
AUTO OFF
“Sensor” indication
Displayed when the remote controller sensor is used.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off timer is set.
If the simple or Auto Off timer is set, shows the time remaining.
Up/Down Air Direction indicator
The indicator shows the direction of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to weak and downward during COOL or DRY mode. (Operation varies according to model.)
The indicator goes off after one hour, at which time the airflow direction also changes.
Room Temperature display
Shows the room temperature.
Louver display
Indicates the action of the swing louver. Does not appear if the louver is stationary.
(Power On indicator)
Indicates that the power is on.
“Locked” indicator
Indicates that remote controller buttons have been locked.
“Clean The Filter” indicator
Comes on when it is time to clean the filter.
Timer indicators
The indicator comes on if the corresponding timer is set.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.
Caution
● Only the Power on indicator lights when the unit is stopped and power supplied to the unit.
● If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available” message.
If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not present at the parent unit.
● When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.
7
OC310A---1.qxp 06.7.7 3:48 PM Page 8
3 SPECIFICATIONS
3-1. SPECIFICATION
Item
PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E
Power
Cooling capacity
V•Hz kW
Heating capacity kW
Cooling kW
Input
Heating kW
Cooling
Current
Heating
Exterior
(munsell symbol)
Height
A
A
— mm
Dimensions Width mm
Depth mm
Heat exchanger
—
F a n
Fan ✕ No
Air flow W 2
External static pressure
Fan motor output
Insulator k
—
/min
Pa kW
—
Air filter
Pipe dimensions
Gas side
Liquid side
Unit drain pipe size
Noise level W 2
Product weight
[
—
[ mm(in.)
[ mm(in.) mm dB kg
3.6
4.0
Note 1. Rating conditions (JIS B 8615-1)
Cooling : Indoor D.B. 27°C W.B. 19°C
Outdoor D.B. 35°C
Heating : Indoor D.B. 20°C
Outdoor D.B. 7°C W.B. 6°C
Single phase 220V-230V-240V · 50Hz / 220V · 60Hz
4.5
Plastic , white : <0.70Y 8.59/0.97>
Cross fin (Aluminum plate fin and copper tube)
11.5-10.5-9.5-8
12.7(1/2")
6.35(1/4")
O.D.20 (PVC pipe VP-20 connectable)
41-38-36-33
5.0
0.07
0.07
0.32
0.32
340
990
235
Linflow fan
0
0.03
Polyethylene sheet
PP honey comb
16
✕ 1
5.6
6.3
12-11-10-9
12.7(1/2") / 15.88(5/8")
6.35(1/4") / 9.52(3/8")
43-40-37-34
W 2. Air flow and the noise level are indicated as High – Middium1 – Middium2 – Low .
8
OC310A---1.qxp 06.7.7 3:48 PM Page 9
3-2. ELECTRICAL PARTS SPECIFICATIONS
Parts name
Model
Symbol
Room temperature thermistor TH21
PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E
Resistance 0
°
C/15k
Ω
, 10
°
C/9.6k
Ω
, 20
°
C/6.3k
Ω
, 25
°
C/5.4k
Ω
, 30
°
C/4.3k
Ω
, 40
°
C/3.0k
Ω
Liquid pipe temperature thermistor TH22 Resistance 0
°
C/15k
Ω
, 10
°
C/9.6k
Ω
, 20
°
C/6.3k
Ω
, 25
°
C/5.4k
Ω
, 30
°
C/4.3k
Ω
, 40
°
C/3.0k
Ω
Gas pipe temperature thermistor TH23
Fuse
(Indoor controller board)
FUSE
Resistance 0
°
C/15k
Ω
, 10
°
C/9.6k
Ω
, 20
°
C/6.3k
Ω
, 25
°
C/5.4k
Ω
, 30
°
C/4.3k
Ω
, 40
°
C/3.0k
Ω
Fan motor
(with inner-thermostat)
MF
250V 6.3A
Inner-thermostat
PM4V30-K 220-240V/220V , 50/60Hz
4 pole Output 30W
OFF 125
±
5 ;
Fan motor capacitor C1 2.0
µ
F 440V
Vane motor MV
Linear expansion valve LEV
Power supply terminal block TB2
MP 35 EA DC12V
DC12V Stepping motor drive
Port dimension [ 3.2 (0 ~ 2000pulse)
(L, N, ; ) 330V 30A
Transmission terminal block TB5 (M1, M2, S) 250V 20A
MA remote controller terminal block TB15 (1,2) 250V 10A
9
OC310A---1.qxp 06.7.7 3:48 PM Page 10
4 OUTLINES AND DIMENSIONS
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
245 21 70
198 Air intake 60
80
280 31
Unit : mm
340
53 79
245 21 70
30 or more 180 or more
135
190
245
300
360
405
345
320
260
205
150
95
35
0
20
32
75
495
495
2.5
R5
R52.5
425
R
52.5
R
52.5
190
170
0
210
230
420
10
OC310A---1.qxp 06.7.7 3:48 PM Page 11
5 WIRING DIAGRAM
PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E
Legend
Symbol
I.B
CN32
CN41
CN51
CN52
F.C
FUSE
SW2
SW3
SW4
X4
ZNR
Name
Indoor controller board
Connector Remote switch
HA terminal-A
Centrally control
Remote indication
Fan phase control
Fuse (6.3A)
Switch Capacity code
Mode selection
Model selection
Aux.Relay (Fan motor)
Varistor
Symbol
C1
LEV
MF
MV
P.B
TB2
TB5
TB15
TH21
TH22
Name Symbol Name
Capacitor (fan motor)
Linear expansion valve
Fan motor (with inner thermo)
Vane motor
Indoor power board
Terminal block
Thermistor
Power supply
Transmission
MA-Remote Controller
Room temperature detection
(0ºC/15k " , 25ºC/5.4k
" )
Pipe temperature detection/Liquid
(0ºC/15k " , 25ºC/5.4k
" )
TH23
A.B
SW1
SW5
SW11
SW12
SW14
SWC
Thermistor Pipe temperature detection/Gas
(0ºC/15k " , 25ºC/5.4k
" )
Circuit board
Switch Mode selection
Voltage selection
Address setting 1st digit
Address setting 2nd digit
Connection No.
Option selector
TO NEXT INDOOR UNIT
MF
3 2 1
P.B
AC220-240V
(RED)
CNSK
TRANS
3
2
1
DC13.1V
(WHT)
CN2S
2
1
I.B
C1
FAN
(WHT)
F.C
1 3 5
X4
X4
CND
(RED)
1 3
FUSE
250V
6.3A
ZNR
6 5
(GRN)
VANE
CN6V
4 3 2 1 8 7 6
(RED)
ADDRESS
CN81
5 4 3 2 1
8
1 3 CNDK
(RED)
5
(RED)
ADDRESS
CN42
4 3 2 1
(GRN)
REMOTE
INDICATION
CN52
0N
0FF
1
SW2
(WHT)
CENTRALLY
CONTROL
CN51
5
1 2 3 4 5 6
1
SW3
6 5
1 2 3 4 5 6 7 8 9 10
LED1
CN2D
(WHT)
(BLU)
(M-NET)
CN2M
1
2
1
2
(WHT)
LEV
CN60
4 3 2
4
1
(WHT)
HA
CN41
1
1
(WHT)
REMOTE
SWITCH
CN32
3
(WHT)
DRAIN
CN31
3 2 1
CN3A
(BLU)
1
2
3
SW4
1 2 3 4 5
(RED) (WHT)
0N
0FF
INTAKE
CN20
2 1
LIQUID
CN21
2 1
(BLK)
GAS
CN29
2 1
LED2
BLK
WHT
BLU
BLU
ORN
ORN
6
4
RED
BLU
TB2
L
N
GRN/YLW
PULL BOX
FUSE(15A)
BREAKER
(15A)
TB5
M2
M1
POWER SUPPLY
~ 220-240V 50Hz
~ 220V 60Hz
TB15
1
2
{
TO OUTDOOR UNIT
BC CONTROLLER
REMOTE CONTROLLER
DC24-30V
TO MA-REMOTE
CONTROLLER
DC8.7-13V
MV
A.B
0
220V
SW1
ON
OFF
1 2 3 4 5 6 7 8 910
3RD
DIGIT
SW5
2ND
DIGIT
240V
SW12 SW11
0 0
1ST
DIGIT
(RED)
ADDRESS
CN43
SWC
2
1
4
3
(RED)
ADDRESS
CN82
SW14
0
CONNECTION
NO.
3
2
5
4
1
8
7
6
See fig: w
1
<fig: w 1>
Models
P32
P40
P50
LEV TH21 TH22 TH23
SW2
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
SW3
ON
OFF
1 2 3 4 5 6 7 8 910
ON
OFF
1 2 3 4 5 6 7 8 910
ON
OFF
1 2 3 4 5 6 7 8 910
SW4
ON
OFF
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
1 2 3 4 5
Note
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.
(Transmisson 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: w 1.
7.Please set the switch SW5 according to the power supply voltage.
Set SW5 to 240V side when the power supply is 230 and 240 volts.
When the power supply is 220 volts,set SW5 to 220V side.
LED on indoor board for service
Mark Meaning
LED1
LED2
Main power supply
Power supply for
MA-Remote controller
Function
Main power supply(Indoor unit:220-240V) power on ➞ lamp is lit
Power supply for MA-Remote controller on ➞ lamp is lit
11
OC310A---1.qxp 06.7.7 3:48 PM Page 12
6 REFRIGERANT SYSTEM DIAGRAM
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
Gas pipe temperature thermistor TH23
Strainer (#50mesh)
Gas pipe
Liquid pipe temperature thermistor TH22
Flare connection
Heat exchanger
Liquid pipe
Linear expansion valve
Strainer (#100mesh)
Strainer (#100mesh)
Room temperature thermistor
TH21
Capacity
Item
Gas pipe
Liquid pipe
PKFY-P32VGM-E PKFY-P40VGM-E
{ 12.7 (1/2”)
{ 6.35 (1/4”)
PKFY-P50VGM-E
{ 12.7 (1/2”) or [ 15.88(5/8”)
{ 6.35 (1/4”) or [ 9.52(3/8”)
12
OC310A---1.qxp 06.7.7 3:48 PM Page 13
7 TROUBLE SHOOTING
7-1. HOW TO CHECK
PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E
Parts name
Room temperature thermistor (TH21)
Liquid pipe temperature thermistor (TH22)
Gas pipe temperature thermistor (TH23)
Check method
Disconnect the connector then measure the resistance with the tester.
(Surrounding temperature 10°C~30°C)
Normal
4.3k
' ~9.6k
'
Abnormal
Open or short Refer to the next page for the details.
Vane motor
Orange 4
Red
5
M
Pink
2
3 6
1
Yellow Brown Blue
Measure the resistance between the terminals using the tester.
(Surrounding temperature 20°C~30°C)
Normal Connector
Brown - Yellow
Brown - Blue
Red - Orange
Red - Pink
186 ' ~ 214 '
Abnormal
Open or short
Fan motor
Fan
3
Red 1
2
White
2
1
Black
3
Protector
Measure the resistance between the terminals using the tester.
(Surrounding temperature 20°C)
Motor terminal or relay connector
Red - Black
White - Black
Normal
141.2
Ω
131.5
Ω
Abnormal
Open or short
Linear expansion valve
Blue
4
M 6
Brown
1 5 3
2 Yellow
White Red Orange
Disconnect the connector then measure the resistance with the tester.
(Surrounding temperature 20°C)
(1)-(5)
White-Red
Normal
(2)-(6)
Yellow-Brown
(3)-(5)
Orange-Red
(4)-(6)
Blue-Brown
150 ' ±10%
Abnormal
Open or short
Refer to the next page for the details.
13
OC310A---1.qxp 06.7.7 3:48 PM Page 14
<Thermistor Characteristic graph>
Thermistor for lower temperature
Room temperature thermistor(TH21)
Liquid pipe temperature thermistor (TH22)
Gas pipe temperature thermistor (TH23)
50
40
Thermistor R
0
=15k ' ± 3%
Fixed number of B=3480K ± 2%
Rt=15exp { 3480( ) }
273+t 273
0 : 15k '
10 : 9.6k
'
20 : 6.3k
'
25 : 5.4k
'
30 : 4.3k
'
40 : 3.0k
'
30
20
10
< Thermistor for lower temperature >
0
-20 -10 0 10 20 30 40 50
Temperature ( : )
Linear expansion valve
① Operation summary of the linear expansion valve.
• Linear expansion valve open/close 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>
Linear expansion valve
4 Blue
M
1
White Red
5
Brown
6
2
3
Orange
Yellow
[ 4
[ 3
[ 2
[ 1
Brown
Red
Blue
Orange
Yellow
White
Connector(CN60)
4
3
2
1
6
5
Controller board
DC12V
Drive circuit
[ 4
[ 3
[
[
2
1
14
OC310A---1.qxp 06.7.7 3:48 PM Page 15
<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
{ 4
OFF
OFF
ON
OFF
ON
ON
OFF
ON
➁ Linear expansion valve operation
D C
Closing a valve : 1 → 2 → 3 → 4 → 1
Opening a valve : 4 → 3 → 2 → 1 → 4
The output pulse shifts in above order.
❈ 1. When linear expansion valve operation stops, all output phase become OFF.
2. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor locks and vibrates.
❈ When the switch is turned on, 2200 pulse closing valve signal will be send till it goes to ⁄ point in order to define the valve position.
A
E
Close
Open
2000 pulse
Opening a valve all the way
When the valve move smoothly, there is no noise or vibration occurring from the linear expansion valve : however, when the pulse number moves from ⁄ to ⁄ or when the valve is locked, more noise can be heard than normal situation.
❈ Noise can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve.
B
Extra tightning (80~100pulse)
Pulse number
➂ Trouble shooting
Symptom Check points
Operation circuit failure of the micro processor.
Disconnect the connector on the controller board, then connect LED for checking.
4
3
6
5
2
1
1 T LED
Pulse signal will be sent out for 10 seconds as soon as the main switch is turned on. If there is LED with lights on or lights off, it means the operation circuit is abnormal.
Countermeasures
Exchange the indoor controller board at drive circuit failure.
Linear expansion valve mechanism is locked.
Short or breakage of the motor coil of the linear expansion valve.
Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked. This ticking sound is the sign of the abnormality.
Exchange the linear expansion vale.
Measure the resistance between the each coil (red-white, red-orange, brown-yellow, brown-blue) using a tester. It is normal if the resistance is in the range of 150 ' +10%.
Exchange the linear expansion valve.
Valve doesn't close completely (thermistor leaking).
To check the linear expansion valve, operate the indoor unit in fan mode and at the same time operate other indoor units 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
Liquid pipe thermistor expansion valve is closed completely and if there are some leaking, detecting tempera-
Linear expansion valve ture of the thermistor will go lower. If the detected temperature is much lower than the temperature 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 making any trouble.
If large amount of thermistor is leaked, exchange the linear expansion valve.
Wrong connection of the connector or contact failure.
Check the color of lead wire and missing terminal of the connector.
Disconnect the connector at the controller board, then check the continuity.
15
OC310A---1.qxp 06.7.7 3:48 PM Page 16
7-2. FUNCTION OF DIPSWITCH
PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E
Switch Pole
1
2
Operation by switch
Function
ON OFF
Thermistor<Intake temperature detection>position
Built-in remote controller
Filter clogging detection Provided
Indoor unit
Not provided
SW1
Mode
Selection
3
4
5
6
7
8
Filter cleaning sign
Air intake
Remote indication switching
Humidifier control
Air flow set in case of
Heat thermostat OFF
Remarks
Address board
2500hr
Effective
Thermostat ON signal indication Fan output indication
Always operated while the heating mode w 1 Operated depends on the condition w 2
Fix to LOW
100hr
Not effective w 3 Fix to EXTRA LOW
Depends on setting Remote controller w
3 Depends on SW1-7 w 3
<At delivery>
ON
OFF
1 2 3 4 5 6 7 8 9 10
NOTE: w
1 At Heating mode, fan operating.
w 2 At Heating mode, operating heat thermostat ON.
w 3 SW1-7=OFF, SW1-8=ON
→ Setting air flow.
SW1-7=ON, SW1-8=ON
→ Indoor fan stop.
9
Auto restart
10
Power source ON/OFF
Effective
Effective
Not effective
Not effective
Indoor controller board
Set while the unit is off.
SW2
Capacity code setting
1~6
Capacity
P32
SW2
ON
OFF
1 2 3 4 5 6
Capacity
P40
SW2
ON
OFF
1 2 3 4 5 6
Capacity
P50
SW2
ON
OFF
1 2 3 4 5 6
<At delivery>
Set for each capacity.
1
2
3
Heat pump/Cooling only Cooling only models
Louver
Vane
Available
Available
4
Vane swing function Available
SW3
Function
Selection
5
6
7
Vane horizontal angle Second setting
Vane cooling limit angle setting w 4 Horizontal angle
Indoor linear expansion valve opening
Effective
Heater 4deg up Not effective
8
9
Target Superheat setting w 5 9degrees
10
Target Sub cool setting 15degrees
SW4
Unit
Selection
1~5
ON
OFF
1 2 3 4 5
Heat pump models
Not available
Not available
Not available
First setting
Down B,C
Not effective
Effective
6degrees
10degrees
Indoor controller board
Set while the unit is off.
<At delivery>
ON
OFF
1 2 3 4 5 6 7 8 9 10
NOTE: w
4 At cooling mode, each angle can be used only 1 hour.
w
5 sw3-9 setting
P32 = OFF
P40 = ON
P50 = OFF
Indoor controller board
Set while the unit is off.
ON
OFF
<At delivery>
1 2 3 4 5
16
OC310A---1.qxp 06.7.7 3:48 PM Page 17
Switch Pole
SW11
1st digit address setting
SW12
2nd digit address setting
SW14
Connect ion No.
setting
SW5
Voltage
Selection
2
SW12
8
9
0
6 5
4
1
2
3
10
SW11
8
9
0
6 5
4
1
2
3
1
SW14
B
D
E
F
A
9 8
0
7
1
2
3
5
6
Operation by switch
Address setting should be done when
M-NET remote controller is being used.
This is the switch to be used when the indoor unit is operated with R2 series outdoor unit as a set.
Remarks
Address board
Address can be set while the unit is stopped.
<At delivery>
SW12
8
9
0
6
5
4
1
2
3
SW11
8
9
0
6
5
4
1
2
3
Address board
<At delivery>
SW14
B
D
E
F
A
9
0
8
7
1
2
3
5
6
220V 240V
If the unit is used at the 230V or 240V area, set the voltage to 240V.
If the unit is used at the 220V, set the voltage to 220V.
Address board
<At delivery>
220V 240V
17
OC310A---1.qxp 06.7.7 3:49 PM Page 18
7-3. TEST POINT DIAGRAM
7-3-1. Indoor controller board
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
CN2D
Connect to the indoor power board (CN2S)
12.5-13.7V DC (Pin 1 (+))
CN2M
Connect to the terminal block (TB5)
(M-NET transmission connecting wire)
24-30V DC (non-polar)
CN3A
Connect to the terminal block (TB15)
(MA-Remote controller connecting wire)
Between 1 to 3 8.7-13V DC (Pin 1 (+))
LED1
Main power supply
(Indoor unit : 220-240V)
CND
Power supply for indoor controller board
Between 1 to 3 220-240V AC
CNP
Drain-up machine output (DP)
Between 1 to 3 220-240V AC
FUSE
6.3A 250V
CNDK
Connect to the indoor power board (CNSK)
Between 1 to 3 220-240V AC
CN29
Pipe temperature thermistor/Gas (TH23)
CN21
Pipe temperature thermistor/Liquid (TH22)
LED2
Power supply for
MA-Remote controller
CN20
Room temperature thermistor (TH21)
CN32
Connector
(Remote switch)
SW4
Model selection
CN60
Linear expansion valve output (LEV)
CN31
Drain sensor (DS)
SW3
Mode selection
CN51
Centrally control
SW2
Capacity setting
CN52
Remote indication
CN6V
Vane moter output (MV)
FAN
Fan motor output (MF)
18
OC310A---1.qxp 06.7.7 3:49 PM Page 19
7-3-2. Indoor power board
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
CN2S
Connect to the indoor power board (CN2D)
Between 1 to 3 12.6-13.7V DC (Pin 1 (+))
CNSK
Connect to the indoor controller board (CNDK)
Between 1 to 3 220-240V AC
19
OC310A---1.qxp 06.7.7 3:49 PM Page 20
8 DISASSEMBLY PROCEDURE
PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E
OPERATION PROCEDURE PHOTOS & ILLUSTRATION
(Figure 1)
Hook
1. REMOVE THE LOWER SIDE OF THE INDOOR UNIT FROM
THE INSTALLATION PLATE
(1) Remove the left / right corner box of the indoor unit.
(2) Hold and pull down the lower and both ends of the indoor unit, and remove the ▼ section from the square hole.
(Refer to the figure 2.1)
Or remove the front panel and push the ▼ section down by using alankey ,etc. from the front side.
(Refer to the figure 2.2).
(3) Unhook the top of the indoor unit from the back plate catch.
(Figure2.1)
(Figure 2.2)
Square hole
Up Down
2. REMOVING THE FRONT PANEL
(1) Open the front grille.
(2) Remove the terminal block cover with a screw.
(3) Remove the screw 3caps then remove the set 3screws.
(4) After removing the lower side of the front panel a little, remove it as pulling toward upper.
Square hole
(Figure 3)
Terminal block cover
Hook
Front grille
(Photo 1)
Front panel
3. REMOVING THE INDOOR CONTROLLER BOARD
(1) Remove the terminal block cover.
(2) Remove the front panel. (See the photo 1)
(3) Remove the electrical parts box(2screws).
(4) Remove the electrical parts box cover(1 screw).
(5) Disconnect the connector on the indoor controller board and remove the controller board by Pulling up the hook of the controller case.
w To smooth works, hang the side hooks of the electrical parts box on the hook of the motor cover.
(See the photo 3)
(Photo 2)
Motor cover
Electrical parts box hook w
(Photo 3)
Hook
Set screw
Set screw
Electrical parts box
Set screw
Indoor control p.c.board
Controller case
Electrical parts box
20
OC310A---1.qxp 06.7.7 3:49 PM Page 21
OPERATION PROCEDURE
4. REMOVING THE VANE MOTOR
(1) Disconnect the connector CN6V on the indoor controller board.
(2) Remove the 2 screws of the vane motor, disconnect the lead wire and remove the vane motor from the shaft.
(Photo 4)
PHOTOS & ILLUSTRATION
Nozzle assemble
Set screws
Lead wire
5. REMOVING THE THERMISTOR
(1) Removing the room thermistor TH21.
1 Disconnect the connector CN20 <red> on the indoor controller board.
2 Remove the room thermistor from the holder.
(2) Removing the liquid pipe thermistor TH22.
1 Disconnect the connector CN21 <white> on indoor controller board.
2 Remove the liquid pipe thermistor with set to the pipe.
(3) Removing the gas pipe thermistor TH23.
1 Disconnect the connector CN29 <black> on indoor controller board.
2 Remove the gas pipe thermistor with set to the pipe.
Van motor
(Photo 5)
Liquid thermistor
Room thermistor
Gas pipe thermistor
Electrical parts box
6. REMOVING THE NOZZLE ASSEMBLE
(1) Disconnect the connector CN6V on the indoor controller board.
(2) Disconnect the lead wire of the vane motor.
(3) Remove the corner cover.
(4) Pull the drain hose out from the nozzle assemble.
(5) Unhook the hook of the lower nozzle assemble and pull the nozzle assemble toward you,then remove the nozzle assemble by sliding it down.
(Photo 6)
Nozzle assemble
(Photo 7)
Hook Drain hose
Corner cover
Vane motor connector
7. REMOVING THE ELECTRICAL PARTS BOX
(1) Remove the terminal block cover.
(2) Remove the front panel.(See the photo 1)
(3) Disconnect the vane motor connector.
(4) Disconnect the fan motor connector from the fan motor.
(5) Remove the liquid / gas pipe thermistor.(See the photo 5)
(6) Remove the electrical parts box (2 screws).
Liquid pipe thermistor
Electrical parts box
Fan motor connector
8. REMOVING THE FAN MOTOR
(1) Remove the terminal block cover.
(2) Remove the front panel.(See the photo 1)
(3) Remove the electrical parts box.(See the photo 7)
(4) Remove the nozzle assemble.(See the photo 6)
(5) Remove the fan motor leg fixing 3 screws.
(6) Unscrew the set screws using by alankey and remove it by sliding the fan motor to right.
(7) Remove the 4 screws and remove the motor cover from the fan motor leg.
(Photo 8)
Set screw screws
(Photo 9)
Motor cover
Fan motor
21 motor leg
OC310A---1.qxp 06.7.7 3:49 PM Page 22
OPERATION PROCEDURE
9. REMOVING THE LINE FLOW FAN
(1) Remove the terminal block cover.
(2) Remove the front panel.(See the photo 1)
(3) Remove the electrical parts box.(See the photo 7)
(4) Remove the nozzle assembly.(See the photo 6)
(5) Remove the fan motor.(See the photo 8)
(6) Remove the pipe fixture with 2 screws.(See the photo 11)
(7) Remove the left / right screws of the heat exchanger and pull the left-hand side up.
(8) Remove the 2screws by sliding it toward you remove the fixture(fixing bearing).
w
The fan motor is removable first , when the fan removing is hard.
w When resetting the fan to the fan motor.
Locate and fix the shaft after installing the fan.
(Photo10)
PHOTOS & ILLUSTRATION
Heat exchanger
Set screws
Fixture(fixing bearing)
(Photo 11)
10. REMOVING THE HEAT EXCHANGER
(1) Remove the terminal block cover.
(2) Remove the front panel.(See the photo 1)
(3) Remove the electrical parts box.(See the photo 7)
(4) Remove the corner box.
(5) Remove the nozzle assemble.(See the photo 6)
(6) Remove the 2screws and the pipe fixture.
(7) Remove the 2screws and heat exchanger.
Set screw
Heat exchanger
Pipe fixture Set screws
22
OC310A---1.qxp 06.7.7 3:49 PM Page 23
9 PARTS LIST (non-RoHS compliant)
STRUCTURAL PARTS
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
13 12
1
2
11
10
9
8
3 4 5 6 7
No.
Parts No.
Parts Name
6
7
4
5
1
2
3
8
9
10
11
12
13
R01 89Y 651
R01 07Y 092
R01 07Y 691
R01 A16 500
R01 07Y 002
R01 07Y 096
R01 85Y 304
T7W B01 294
R01 07Y 658
R01 07Y 635
R01 07Y 808
R01 07Y 623
R01 09Y 658
FRONT PANEL
VANE SLEEVE
FRONT GRILLE
AIR FILTER
AUTO VANE
SCREW CAP
ADDRESS CABLE
ADDRESS BOARD
CORNER COVER
BOX ASSEMBLY
BACK PLATE
UNDER COVER
CORNER COVER
Specifications
PKFY-
P32,P40,P50VGM-E
1
1
1
1
1
1
1
2
1
3
1
1
1
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Recommended
Price
Q'ty Unit Amount
A.B
23
OC310A---1.qxp 06.7.7 3:49 PM Page 24
ELECTRICAL PARTS
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
4
5
6
7
8
9
3 2 1 28 27 26 25 24 23
29
TEMP.
ON/OFF
10
11 12 13 14 15 16 17 18 19 20 21 22
No.
Parts No.
Parts Name
1
2
19
20
21
22
23
24
25
26
27
28
29
12
13
14
15
16
17
18
7
8
9
10
11
5
6
3
4
T7W A01 762
R01 H55 480
R01 H56 480
R01 H57 480
R01 07Y 114
R01 005 103
R01 07Y 102
R01 07Y 106
T7W A00 675
R01 07Y 524
R01 07Y 530
R01 07Y 059
R01 07Y 038
R01 09Y 038
R01 E04 223
R01 07Y 527
R01 07Y 135
R01 07Y 105
T7W 512 716
T7W E00 716
T7W A14 716
R01 588 255
R01 E02 313
T7W E34 310
T7W 520 239
R01 E26 202
R01 E28 202
R01 E34 202
R01 07Y 130
R01 E63 401
—
FAN MOTOR
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
LINE FLOW FAN
SLEEVE BEARING
BEARING MOUNT
BEARING SUPPORT
FAN GUARD
DRAIN PLUG
NOZZLE ASSY
ARM
GUIDE VANE
GUIDE VANE
VANE MOTOR
DRAIN HOSE
MOTOR COVER
RUBBER MOUNT
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
RUN CAPACITOR
POWER BOARD
CONTROLLER BOARD
FUSE
ROOM THERMISTOR
LIQUID PIPE THERMISTOR
GAS PIPE THERMISTOR
MOTOR SUPPORT
LINEAR EXPANSION VALVE
REMOTE CONTROLLER
PKFY-
Specifications
P32VGM
-E
P40VGM
-E
P50VGM
-E
1 1 1
1
1
1
1
1
1
1
1
1
2
10
1
1
1
1
1
1
1
2
10
1
1
1
1
1
1
1
1
2
10
2P(1,2)
3P(M1,M2,S)
3P(L,N, ; )
2.0
= 440V
250V 6.3A
1
1
1
1
1
1
1
1
1
4
1
2
1
1
4
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
4
1
2
1
1
1
1
1
1
1
1
1
PAR-21MAA
1
1
1
1
1
1
1
1
1
1
1
1
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Recommended
Q'ty
MF
Price
Unit Amount
MV
TB15
TB5
TB2
C1
P.B
I.B
FUSE
TH21
TH22
TH23
LEV
24
OC310A---1.qxp 06.7.7 3:49 PM Page 25
10 RoHS PARTS LIST
STRUCTURAL PARTS
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
13 12
2
1
8
3 4 5 6 7
No.
Parts No.
Parts Name
G
G
G
G
G
G
G
G
G
G
G
G
G
3
4
5
1
2
8
9
6
7
10
11
12
13
R01 E05 651
R01 08Y 092
R01 08Y 691
R01 A32 500
R01 08Y 002
R01 08Y 096
R01 A00 304
T7W E01 294
R01 08Y 658
R01 08Y 635
R01 08Y 808
R01 08Y 623
R01 10Y 658
FRONT PANEL
VANE SLEEVE
FRONT GRILLE
AIR FILTER
AUTO VANE
SCREW CAP
ADDRESS CABLE
ADDRESS BOARD
CORNER COVER
BOX ASSEMBLY
BACK PLATE
UNDER COVER
CORNER COVER
Specifications
PKFY-
P32,P40,P50VGM-E
1
1
1
1
1
1
1
1
3
1
2
1
1
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Recommended
Price
Q'ty Unit Amount
A.B
25
11
10
9
OC310A---1.qxp 06.7.7 3:49 PM Page 26
ELECTRICAL PARTS
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
4
5
6
7
8
9
3 2 1 28 27 26 25 24 23
29
TEMP.
ON/OFF
10
11 12 13 14 15 16 17 18 19 20 21 22
No.
1
2
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
18
19
20
21
22
23
24
25
26
27
28
29
11
12
13
14
15
16
17
6
7
8
9
10
3
4
5
Parts No.
Parts Name
T7W A02 762
R01 J34 480
R01 J35 480
R01 J36 480
R01 E22 114
R01 E04 103
R01 08Y 102
R01 08Y 106
T7W A01 675
R01 08Y 524
R01 08Y 530
R01 08Y 059
R01 08Y 038
R01 10Y 038
R01 E14 223
R01 08Y 527
R01 08Y 135
R01 08Y 105
T7W E33 716
R01 E27 246
T7W E32 716
R01 E13 255
R01 E38 313
T7W E53 310
R01 E06 239
R01 H08 202
R01 H07 202
R01 H13 202
R01 08Y 130
R01 H05 401
—
FAN MOTOR
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
LINE FLOW FAN
SLEEVE BEARING
BEARING MOUNT
BEARING SUPPORT
FAN GUARD
DRAIN PLUG
NOZZLE ASSY
ARM
GUIDE VANE
GUIDE VANE
VANE MOTOR
DRAIN HOSE
MOTOR COVER
RUBBER MOUNT
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
RUN CAPACITOR
POWER BOARD
CONTROLLER BOARD
FUSE
ROOM THERMISTOR
LIQUID PIPE THERMISTOR
GAS PIPE THERMISTOR
MOTOR SUPPORT
LINEAR EXPANSION VALVE
REMOTE CONTROLLER
PKFY-
Specifications
P32VGM
-E
P40VGM
-E
P50VGM
-E
1 1 1
1
1
2P(1,2)
3P(M1,M2,S)
3P(L,N, ; )
2.0
= 440V
250V 6.3A
1
1
1
1
1
1
1
2
10
4
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
10
4
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
10
4
1
2
1
1
1
1
1
1
1
1
1
1
PAR-21MAA
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
MF
Recommended
Q'ty
Price
Unit Amount
MV
TB15
TB5
TB2
C1
P.B
I.B
FUSE
TH21
TH22
TH23
LEV
26
OC310A---1.qxp 06.7.7 3:49 PM Page 27
27
OC310A---1.qxp 06.7.7 3:49 PM Page 28
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN c Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Jul. 2006 No. OC310 REVISED EDITION-A PDF 8
Distributed in Apr. 2004 No. OC310 PDF 9
Made in Japan
New publication, effective Jul. 2006
Specifications subject to change without notice
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