Mitsubishi Electric PCFY-P40VGM-E Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. SAFETY PRECAUTION ······················2
2. PART NAMES AND FUNCTIONS·······6
3. SPECIFICATIONS ·······························8
4. OUTLINES AND DIMENSIONS·········11
5. WIRING DIAGRAM····························15
6. REFRIGERANT SYSTEM DIAGRAM ··16
7. TROUBLE SHOOTING······················17
8. DISASSEMBLY PROCEDURE··········24
9. PARTS LIST·······································28
10. RoHS PARTS LIST···························35
11. OPTIONAL PARTS ··························42
PCFY-P40VGM-E PCFY-P40VGM-E
PCFY-P63VGM-E PCFY-P63VGM-E
PCFY-P100VGM-E PCFY-P100VGM-E
PCFY-P125VGM-E PCFY-P125VGM-E
No. OC308
REVISED EDITION-A
INDOOR UNIT
Ceiling Suspended
Series PCFY
<Indoor unit>
[Model name] [Service Ref.]
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R407C R22
R410A
July 2006
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 com-
pliant products, refer to the
RoHS Parts List.
Revision:
• RoHS PARTS LIST is added.
•Some descriptions have
been modified.
•Please void OC308.
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2
1SAFETY PRECAUTION
[2] Refrigerant recharging
(1) Refrigerant recharging process
1Direct 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)
(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.
[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.
Cautions for units utilizing refrigerant R407C
CAUTIONS RELATED TO NEW REFRIGERANT
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 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.
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.
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.
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. Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Gravimeter
Unit
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3
[3] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
2Charge hose ·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a or R407C.
5Adapter for reverse flow check. ·Attach on vacuum pump.
6Refrigerant charge base.
7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
8Refrigerant recovery equipment.
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4
Cautions for units utilizing refrigerant R410A
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.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
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.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil etc.
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.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enter, that can cause deterio-
ration of refrigerant oil etc.
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.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
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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.)
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Specifications
1Gauge manifold ·Only for R410A
·Use the existing fitting specifications. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose ·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check ·Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)
Cylinder with syphon
8Refrigerant recovery equipment
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2PART NAMES AND FUNCTIONS
● Indoor Unit
Air outlet
Intake grille Air intake
Left/right guide vanes
Change the direction of airflow
from the horizontal blower.
Long-life fillter
Removes dust and foreigh matter from air coming in
through the grille (Recommended cleaning interval :
Approx, every 2,500 operating hours)
Up/down guide vanes
Change the direction of airflow from the
vartical blower.
6
● Operation buttons
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
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.
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.
On the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
● Wired remote controller
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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.
˚F˚C
˚F˚C
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
Identifies the current operation
Shows the operating mode, etc.
* Multilanguage display is sup-
ported.
“Centrally Controlled” indicator
Indicates that operation of the re-
mote controller has been prohib-
ited by a master controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
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.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons 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 corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
The indicator shows the direc-
tion 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 di-
rection 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.
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 indica-
tion (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.
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8
3SPECIFICATIONS
3-1. SPECIFICATIONS
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
WAir flow and the noise level are indicated as High – Middium1 – Middium2 – Low.
Item
V·Hz
kW
kW
kW
kW
A
A
—
mm
mm
mm
—
—
k/min
Pa
kW
—
[mm(in.)
[mm(in.)
[mm
dB
kg
Cooling capacity
Power
Heat exchanger
Air filter
Fan ✕No
Air flow W
Pipe
dimensions
Unit drain pipe size
Noise level W
Product weight
Exterior
(munsell symbol)
Fan motor
output
External
static pressure
Liquid
side
Gas
side
Heating capacity
F
a
n
Dimensions
Height
Width
Depth
Electric characteristic
Input
Cooling
Heating
Cooling
Heating
Current
PCFY-P40VGM-E PCFY-P63VGM-E PCFY-P100VGM-E PCFY-P125VGM-E
Single phase 220-230-240V 50Hz / 220V 60Hz
4.5
5.0
0.10
0.10
0.46
0.46
7.1
8.0
0.13
0.13
0.60
0.60
11.2
12.5
0.16
0.16
0.73
0.73
14.0
16.0
0.24
0.24
1.10
1.10
1310
18 -16 -14 -12
0.07
15.88(5/8")
9.52(3/8")
39 -37 -34 -32
34
Unit : Munsell<0.70Y 8.59/0.97>
680
Cross fin (Aluminum plate fine and copper tube)
Sirocco fan ✕3
0
PP honey comb
I.D.26 (PVC pipe VP-20 connectable)
15.88(5/8") / 19.05(3/4")
9.52(3/8")
210 270
1310
25 -23 -20 -18
0.09
43 -41 -38 -36
37
1620
Sirocco fan ✕4
35 -32 -28 -26
0.15
44 -42 -39 -37
43
1000
Sirocco fan ✕2
12 -11 -10 -8
0.054
12.7(1/2")
6.35(1/4")
38 -36 -33 -29
27
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9
3-2. ELECTRICAL PARTS SPECIFICATIONS
Parts name
Model Symbol
TH21
TH22
TH23
FUSE
MF
C1
MV
LEV
TB2
TB5
TB15
Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"
Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"
Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"
250V 6.3A
OFF 130:I5:
(L, N, ;) 330V 30A
(M1, M2, S) 250V 20A
(1, 2) 250V 10A
3µF ✕440V
Inner-thermostat
4µF ✕440V 4µF ✕440V 6µF ✕440VFan motor capacitor
Vane motor
Linear expansion valve
PCFY-P40VGM-E PCFY-P63VGM-E PCFY-P100VGM-E PCFY-P125VGM-E
Room temperature
thermistor
Liquid pipe temperature
thermistor
Gas pipe temperature
thermistor
Fuse
(Indoor controller board)
Fan motor
(with inner-thermostat)
Power supply
terminal block
Transmission
terminal block
MA remote controller
terminal block
DC12V Stepping
motor drive
[3.2 (0~2000pulse)
4-Pole Output 54W
D09B4P54MS
MP35EA
DC12V MP42EA DC12V
4-Pole Output 70W
D09C4P70MS 4-Pole Output 90W D10B4P90MS 4-Pole Output 150W D10B4P150MS
DC12V Stepping motor drive
[3.2 (0~2000pulse)
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10
3-3. NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE THRESHOLD OF HEARING
FOR CONTINUOUS NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PCFY-P40VGM-E Hi
NOTCH
Mi1
Mi2
Lo
35
SPL(dB)
33
30
27
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PCFY-P63VGM-E Hi
NOTCH
Mi1
Mi2
Lo
37
SPL(dB)
36
34
32
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PCFY-P100VGM-E Hi
NOTCH
Mi1
Mi2
Lo
39
SPL(dB)
37
35
33
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PCFY-P125VGM-E Hi
NOTCH
Mi1
Mi2
Lo
39
SPL(dB)
37
35
33
LINE
UNIT
About 1.4m
MICROPHONE
CEILING
1m
1m
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OUTLINES AND DIMENSIONS4
11
2
1
Air intake
When electrical box is pulled down
Electrical box
Air outlet
7
8
54
32
6
Electrical box
(Drainage)
(1/2F)gas
(1/4F)liquid
( FRONT VIEW )
Ceiling
56506
161 90
904
933 (Suspension bolt pitch)
157
70 15 85
81
210
226
241
201
182
180
76
680
254
150 18
70140
320 80
918
1000
983
6 ~ 7
928
525
42 179
161 32
46
175
131
1
352
171
138
86
263
38
38
79
1Drainage pipe connection (26mm I.D.) 5Refrigerant-pipe connection (liquid pipe side/flared connection) 2Drainage pipe connection (for the left arrangement) 6Knock out hole for upper drain pipe arrangement 3Knock out hole for left drain-piping arrangement 7Knock out hole for left drain pipe arrangement 4Refrigerant-pipe connection (gas pipe side/flared connection) 8Knock out hole for wiring arrangement NOTES:
1. Use M10 or W3/8 screws for anchor bolt. 2. Please be sure when installing the drain-up machine (option parts).
refrigerant pipe will be only upper drain pipe arrangement.
Unit : mm
INDOOR UNIT
PCFY-P40VGM-E
OC308A--1.qxp 06.7.7 3:45 PM Page 11

12
(Drainage)
(5/8F)gas
(3/8F)liquid
Air intake
Air outlet
Electrical box
When electrical box is pulled down
Ceiling
( FRONT VIEW )
Electrical box
6
4
1
5
8
2
3
7
2
506 56
90161
1240 (Suspension bolt pitch)
157
1228 1310 1214 1290 15 85
81
210
226
241
201
182
180
76
680
254
150 18
70140
320 80
70
6 ~ 7
1235 416525
42 179
161 32
46
175
131
1
171
138
86
263
38
38
79
1Drainage pipe connection (26mm I.D.) 5Refrigerant-pipe connection (liquid pipe side/flared connection) 2Drainage pipe connection (for the left arrangement) 6Knock out hole for upper drain pipe arrangement 3Knock out hole for left drain-piping arrangement 7Knock out hole for left drain pipe arrangement 4Refrigerant-pipe connection (gas pipe side/flared connection) 8Knock out hole for wiring arrangement NOTES:
1. Use M10 or W3/8 screws for anchor bolt. 2. Please be sure when installing the drain-up machine (option parts).
refrigerant pipe will be only upper drain pipe arrangement.
Unit : mm
PCFY-P63VGM-E
OC308A--1.qxp 06.7.7 3:45 PM Page 12

(3/8F)liquid
(5/8F or 3/4F)gas
(Drainage)
Air intake
Air outlet
1240 (Suspension bolt pitch)
Electrical box
When electrical box is pulled down
( FRONT VIEW )
Ceiling
Electrical box
6
2
7
4
1
5
8
2
3
506 56
90161
229
217
70
70140
18150
80320
1214 1310
81 96
207
270
680
254
1228
182
198
245
16 87
38 38 140
525
6 ~ 7
160 93
42 239
1235
687 263
171
138
86
45
192
236 1
13
1Drainage pipe connection (26mm I.D.) 5Refrigerant-pipe connection (liquid pipe side/flared connection) 2Drainage pipe connection (for the left arrangement) 6Knock out hole for upper drain pipe arrangement 3Knock out hole for left drain-piping arrangement 7Knock out hole for left drain pipe arrangement 4Refrigerant-pipe connection (gas pipe side/flared connection) 8Knock out hole for wiring arrangement NOTES:
1. Use M10 or W3/8 screws for anchor bolt. 2. Please be sure when installing the drain-up machine (option parts).
refrigerant pipe will be only upper drain pipe arrangement.
Unit : mm
PCFY-P100VGM-E
OC308A--1.qxp 06.7.7 3:45 PM Page 13

Air intake
Air outlet
Electrical box
When electrical box is pulled down
( FRONT VIEW )
Ceiling
Electrical box
(Drainage)
(5/8F or 3/4F)gas
(3/8F)liquid
6
2
2
7
4
1
5
8
3
506 56
90161
229
217
1545 1547 (Suspension bolt pitch)
1524 1620 1535
198
87
270
81 96
207
182
245
16
680
254 80
150 18
140 70
320
70
525 687 263
171
138
86
38 38 140
6 ~ 7
160 93
42 239
45
192
236 1
14
PCFY-P125VGM-E
1Drainage pipe connection (26mm I.D.) 5Refrigerant-pipe connection (liquid pipe side/flared connection) 2Drainage pipe connection (for the left arrangement) 6Knock out hole for upper drain pipe arrangement 3Knock out hole for left drain-piping arrangement 7Knock out hole for left drain pipe arrangement 4Refrigerant-pipe connection (gas pipe side/flared connection) 8Knock out hole for wiring arrangement
NOTES: 1. Use M10 or W3/8 screws for anchor bolt. 2. Please be sure when installing the drain-up machine (option parts).
refrigerant pipe will be only upper drain pipe arrangement.
Unit : mm
OC308A--1.qxp 06.7.7 3:45 PM Page 14

WIRING DIAGRAM
5
15
PCFY-P40VGM-E PCFY-P63VGM-E PCFY-P100VGM-E PCFY-P125VGM-E
(GRN)
(BLU)
5
RED
ORN YLW
WHT BLU
CN6V
VANE
(GRN)
MV
MODEL
PCFY-P125VGM
P.B INDOOR POWER BOARD
DS(OPTION)
(WHT)
DRAIN
CN31
Power supply for MA-Remote controller
on ➔lamp is lit
Main power supply(Indoor unit:220-240V)
power on ➔lamp is lit
LED on indoor board for service
Power supply for
MA-Remote controller
Function
Main power supply
Meaning
LED2
LED1
Mark
(OPTION)
NameNameName SymbolSymbolSymbol
SW3
21
OFF
ON
345678910
1098756
ON
OFF 1234
Option selector
Ceiling heigh selector
SWC
SWA
Linear expansion valve
LEV
Varistor
ZNR
Model selection
Capacity code
Mode selection
Remote indication
Centrally control
Remote switch
Legend
I.B Indoor controller board
Connector
CN32
CN51
CN52
Switch
SW2
SW3
SW4
CNP
PCFY-P100VGM
ON
OFF 123456
[w1]
ON
OFF 123456
PCFY-P125VGM
PCFY-P63VGM
654321
OFF
ON 654321
OFF
ON
PCFY-P40VGM
Models SW2
Voltage selection
Address setting 2nd digit
Connection No.
Address setting 1st digit
Mode selection
Address
Power supply
Vane motor
Circuit board
Switch
Terminal
block
SW5
A.B
SW1
SW11
SW12
SW14
TB2
MV
Capacitor(fan motor)
C1
FUSE (6.3A)
Pipe temperature,detection/Gas
Pipe temperature,detection/liguid
Room temperature,detection
Fan phase control Thermistor (0˚C/15k",25˚C/5.4k")
(0˚C/15k",25˚C/5.4k")
(0˚C/15k",25˚C/5.4k")
F.C
FUSE
TH21
TH22
TH23
Aux.Relay Fan motor
X4
X1 Drain-up machine
Fan motor(with inner thermo)
MF
Drain-up machine
6
BRN RED
ORN YLW
WHT BLU
MV
CN6V
VANE
(GRN)
MODEL
PCFY-P100VGM
LED2
5432
TH22
1
4
1 1234567891023456
6
68
LEV TH21 TH23
0N
SW4
0N SW3SW2
0FF 0FF
P.B
TRANS CN2S
DC13.1V
(RED)
AC220~240V
CNSK
X1
X4
CNDK CN2D WHT
ORN
ORN
1CN41 4
CNP
X1
13
51
51
X4 LED1
FAN
F.C
CND
FUSE
250V
6.3A HA
ZNR
CN51
CN31
I.B C1
CN3A
DRAIN
{
TB15 1
2
{
MV
CN6V
VANE
(GRN) ADDRESS
(RED)
CN81 ADDRESS
(RED)
CN42
See fig:w1
REMOTE
INDICATION
CN52
CENTRALLY
CONTROL
(WHT) (WHT)
LEV
CN60
(WHT)
CN32
REMOTE
SWITCH
(RED)
CN20
INTAKE
CN21
LIQUID
(WHT)
CN29
GAS
(BLK)
CN2M
M-NET
(BLU)
(BLU)
BLU
BLU
(WHT) (WHT) (WHT) BLK
(WHT)
(RED) (RED)
(WHT)
RED
WHT
BLK
WHT
BLK
WHT
WHT
YLW
YLW
ORN
ORN
BLU
BLU
RED
RED
BRN
BRN
CONTROLLER
DC8.7-13V
TO MA-REMOTE
M1
M2
S(SHIELD)
DC24-30V
BC CONTROLLER
BLU RED
REMOTE CONTROLLER
TO OUTDOOR UNIT
~/N 220V 60Hz
BREAKER
(15A)
FUSE(15A)
~/N 220-240V 50Hz
TO NEXT INDOOR UNIT
PULL BOX
N
L
TB5
TB2
GRN/YLW
BLU
RED
Drain sensor (OPTION)
Drain-up machine (OPTION)
DS
DP
TB5 Transmission
TB15 MA-remote controller
DS
I.B
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.(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, :connector.
6. The setting of the SW2 dip switches differs in the capacity.
For the detail,refer to the fig: w1.
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.
8. Fasten terminal of the terminal board "TB5" equips lock system.
To remove the fasten terminal,pull it while pressing the protruding portion (locking level)
of the terminal. Connection of the fasten terminal,protruding portion shouid face upward.
432165
432165
A.B
0
SWA
SWC
SW5
220V 240V
2ND
DIGIT
CN82
ADDRESS
(RED)
ON
OFF 12345678910
SW1
SW12 SW11
3RD
DIGIT
00
1ST
DIGIT CONNECTION
NO.
SW14
0
ADDRESS
(RED)
CN43
3
1
2
4
3
2
18
7
6
5
4
3
2
1
432165
432165
12
1221
432165
21
12
432165 87654321 4321
321
MF
315
315
654321
2
1
13
2
1
3
DP
13 1
2
31
1
2
31 2
432165 123
OC308A--1.qxp 06.7.7 3:45 PM Page 15

16
6REFRIGERANT SYSTEM DIAGRAM
Strainer (#50mesh)
Strainer (#100mesh)
Strainer (#100mesh)
Heat exchanger
Room temperature thermistor TH21
Gas pipe temperature
thermistor TH23
Liquid pipe temperature
thermistor TH22
Linear expansion valve
Gas pipe
Liquid pipe
Flare connection
Gas pipe
PCFY-P40VGM-E
{12.7(1/2”)
PCFY-P63VGM-E
{15.88(5/8”)
PCFY-P100VGM-E
PCFY-P125VGM-E
{15.88(5/8”) or
{19.05(3/4”)
Liquid pipe {6.35(1/4”) {9.52(3/8”) {9.52(3/8”)
Capacity
Item
PCFY-P40VGM-E
PCFY-P63VGM-E
PCFY-P100VGM-E
PCFY-P125VGM-E
OC308A--1.qxp 06.7.7 3:45 PM Page 16

TROUBLE SHOOTING
7
17
7-1. How to check the parts
PCFY-P40VGM-E PCFY-P63VGM-E PCFY-P100VGM-E PCFY-P125VGM-E
Parts name Check points
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10:~30:)
Disconnect the connector then measure the resistance valve using a tester.
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:~30:)
Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Surrounding temperature 0:~60:)
Linear expansion
valve
Drain-up machine
(Optional)
Drain sensor
(Optional)
Refer to the next page for the details.
Room temperature
thermistor (TH21)
Liquid pipe temperature
thermistor (TH22)
Gas pipe temperature
thermistor (TH23)
1
3
Gray
Gray
1
2
3
Normal
4.3k"~9.6k"
Abnormal
Open or short
Abnormal
Open or short
Normal
0.6k"~6.0k"
Abnormal
Open or short
Normal
150k"i10%
(1)-(5)
White-Red (2)-(6) Yellow-Brown (3)-(5) Orange-Red (4)-(6) Blue-Brown
Normal Abnormal
92"Open or short
Orange
Red
White
Blue
Brown
Yellow
3
6
15
4
2
M
Measure the resistance between the terminals using a tester.Fan motor
1
1
3
3
5
5
Red
White
Black
Connector
Protector
P40VGM-E
70.6"
69.6"
P63VGM-E
45.0"
44.8"
P100VGM-E
43.7"
53.3"
P125VGM-E
20.4"
20.7"
Abnormal
Open or short
Red-Black
White-Black
Motor terminal
or
Connector
Normal
PCFY-
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:~30:)
Vane motor
Normal
PCFY-P40VGM-E PCFY-P63VGM-E
Connector Abnormal
186~214"140~160"Open or short
Brown — Yellow
Brown — Blue
Red — Orange
Red — Pink
Normal
PCFY-P100VGM-E, PCFY-P125VGM-E
Connector Abnormal
140~160"Open or short
Red — Blue
Red —Yellow
Red — Pink
Red — Orange
Refer to the next
page for the details.
BlueYellow Brown
Orange
Red
Pink
2
3
Yellow
3
4
5
Orange
Red
Pink
2
4
5
61
Blue
1
Connector
Pin No.
Connector
Pin No.
M
M
OC308A--1.qxp 06.7.7 3:45 PM Page 17

18
<Thermistor Characteristic graph>
Room temperature thermistor(TH21)
Liquid pipe temperature thermistor(TH22)
Gas pipe temperature thermistor(TH23)
Thermistor R0=15k' ±3%
Fixed number of B=3480K ± 2%
Rt=15exp { 3480( ) }
0:15k'
10:9.6k'
20:6.3k'
25:5.4k'
30:4.3k'
40:3.0k'
Thermistor at
lower temperature
Linear expansion valve
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor at lower temperature >
Temperature (:)
Resistance (K")
11Operation 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 opening can be changed in proportion to the number of pulse signal.
<Connection between the indoor controller board and the linear expansion valve>
4[4
3
62
5
[3
2[2
1[1
[4
[3
[2
[1
Controller board
Drive circuit
Relay connector
Connector(CN60)
DC12V
Brown
Red
Blue
Orange
Yellow
White
5
1
3
4
6
M
4
6
2
3
5
1
Blue
Brown
Yellow
Orange
Red
White
Linear expansion valve
1
273+t 1
273
Note : Since the number of the connector at the controller board side and the relay connector are different, follow the color of
the lead wire.
OC308A--1.qxp 06.7.7 3:45 PM Page 18

19
Output
(Phase)
number
Output
{1
1
ON
{2ON
{3OFF
{4OFF
2
OFF
ON
ON
OFF
3
OFF
OFF
ON
ON
4
ON
OFF
OFF
ON
<Output pulse signal and the valve operation>
22Linear expansion valve operation
33Trouble shooting
D
A
E
B
C
Open
Extra tightning (80~100pulse)
Pulse number
2000 pulse
Open the valve
all the way
Close
6
5
4
3
2
1
LED1T
Closing a valve : 1 → 2 → 3 → 4 → 1
Opening a valve : 4 → 3 → 2 → 1 → 4
The output pulse shift as 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 will lock and vibrate.
❈ When the switch is turned on, 2200 pulse closing valve signal
will be send till it goes to Apoint in order to define the valve
position.
When the valve move smoothly, there is no noise or vibration
occur from the linear expansion valve : however, when the pulse
number moves from E to Aor when the valve is locked, more
noise can be hear than normal situation.
❈ Noise can be detected by placing the ear against the screw dri-
ver handle while putting the screw driver to the linear expansion
valve.
Symptom Check points
Operation circuit fail-
ure of the micro
processor.
Disconnect the connector on the controller board, then con-
nect LED for checking.
Pulse signal will be sent out for 10 seconds as soon as the
main switch is turn on. If there is LED with lights on or lights
off, it means the operation circuit is abnormal.
Countermeasures
Exchange the indoor con-
troller board at drive circuit
failure.
Linear expansion
valve mechanism is
locked.
Valve doesn't close
completely (thermis-
tor leaking).
Wrong connection of
the connector or
contact failure.
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
expansion valve is closed completely and if
there are some leaking, detecting tempera-
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.
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.
Check the color of lead wire and missing terminal of the con-
nector.
Exchange the linear
expansion vale.
Exchange the linear
expansion valve.
If large amount of thermis-
tor is leaked, exchange the
linear expansion valve.
Disconnect the connector
at the controller board,
then check the continuity.
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"I10%
Short or breakage of
the motor coil of the
linear expansion
valve.
Thermistor
(Liquid pipe)
Linear
expansion
valve
OC308A--1.qxp 06.7.7 3:45 PM Page 19

20
7-2. FUNCTION OF DIP SWITCH
PCFY-P40VGM-E PCFY-P63VGM-E PCFY-P100VGM-E PCFY-P125VGM-E
1
2
3
4
5
6
7
8
9
10
1~6
1
2
3
4
5
6
7
8
9
10
1~4
Room temperature Thermistor
position
ON OFF
Filter clogging detection Provided Not provided
Filter cleaning sign 2500hr 100hr
Air intake Effective Not effective
Remote indication switching Thermostat ON signal indication Fan output indication
Humidifier control Always operated while the heating mode w1 Operated depends on the condition w2
Air flow set in case of Fix to LOW w3 Fix to EXTRA lOW w3
heat thermostat OFF
Depends on setting remote controller w3 Depends on SW1-7
Auto reset function Effective Not effective
Power resource ON/OFF Effective Not effective
Heat pump/Cool only Cooling only Heat pump
Louver Available Not available
Vane Available Not available
Vane swing function Available Not available
Vane horizontal angle Second setting First setting
Vane cooling limit angle setting w4Horizontal angle Down B,C
Effective Not effective
Heater 4degrees up Not effective Effective
Target Superheat setting w59degrees 6degrees
Target Subcool setting 15degrees 10degrees
ON
OFF
ON
OFF
12345
12345
ON
OFF 12345678910
ON
OFF 12345678910
ON
OFF 123456
ON
OFF 123456
ON
OFF 123456
ON
OFF 123456
Capacity SW2 Capacity SW2 Capacity SW2
PCFY-
P40VGM-E PCFY- P63VGM-E
PCFY-
P100VGM-E
PCFY-
P125VGM-E
Address board
<At delivery>
Indoor controller board
Indoor controller board
Indoor controller board
<At delivery>
<At delivery>
SW4
Unit
Selection
SW3
Function
Selection
SW2
Capacity
code
setting
SW1
Mode
Selection
Switch Pole Function Remarks
Operation by switch
Built-in remote controller Indoor unit
Indoor linear expansion
valve opening
NOTE:
w1 At Heating mode, fan
operating.
w2 At Heater mode, operating
heat thermostat ON.
w3 SW1-7=OFF, SW1-8=ON
→Setting air flow.
SW1-7=ON, SW1-8=ON
→Indoor fan stop.
Set while the unit is off.
<At delivery>
Set for each capacity.
Set while the unit is off.
NOTE:
w4 At cooling mode, each
angle can be used only 1
hour.
w5 SW3-9 setting
P40 = ON
P63,P100,P125 = OFF
Set while the unit is off.
OC308A--1.qxp 06.7.7 3:45 PM Page 20