Mitsubishi Electric PLFY-P32VKM Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
Indoor unit
PLFY-P32VKM PLFY-P32VKM.UK
PLFY-P4 VKM PLFY-P4 VKM.UK
PLFY-P5 VKM PLFY-P5 VKM.UK
PLFY-P63VKM PLFY-P63VKM.UK
No. OC2 4
[Model names]
INDOOR UNIT
Ceiling Cassettes
Series PLFY
CONTENTS
1. SAFETY PRECAUTION ·······················3
2. PART NAMES AND FUNCTIONS ········4
3. SPECIFICATIONS·································6
4. OUTLINES AND DIMENSIONS············8
5. WIRING DIAGRAM·······························9
6.
REFRIGERANT SYSTEM DIAGRAM ···1
7. TROUBLE SHOOTING ·······················11
8. DISASSEMBLY PROCEDURE···········16
9. PARTS LIST········································19
R4 7C
[Service Ref.]
R22

3
SAFETY PRECAUTION
1
Cautions for using with the outdoor unit which adopts R4 7C refrigerant.
· Do not use the existing refrigerant piping.
-The old refrigeran and refrigera or oil in he exis ing piping con ains a large amoun of chlorine which may cause he
refrigera or oil of he new uni o de eriora e.
· Do not use crushed, misshapen, or discoloured tubing.
The inside of the tubing should be clean and free from harmful sulfuric compounds, oxidants, dirt, debris, oils and
moisture(or any other contaminants).
-Con aminan s on he inside of he refrigeran piping may cause he refrigeran residual oil de eriora e.
· Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before
brazing. (Store elbows and other joints in a plastic bag.)
-If dus , dir , or wa er en ers he refrigeran cycle, de eriora ion of he oil and compressor rouble may resul .
· Use liquid refrigerant to fill the system.
-If gas refrigeran is used o seal he sys em, he composi ion of he refrigeran in he cylinder will change and performance
may drop.
· Do not use a refrigerant other than R4 7C.
-If ano her refrigeran (R22, e c.) is used, he chlorine in he refrigeran may cause he refrigera or oil o de eriora e.
· Use a vacuum pump with a reverse flow check valve.
-The vacuum pump oil may flow back in o he refrigeran cycle and cause he refrigera or oil o de eriora e.
· Use ester oil, ether oil or alkyl benzene(small amount) as the refrigerator oil to coat flares and flange connections.
-The refrigera or oil will degrade if i is mixed wi h a large amoun of mineral oil.
· Do not used the following tools that are used with conventional refrigerants.
(Gauge manifold, charge hose, charging cylinder, gas leak detector, reverse flow check valve, refrigerant charge
base, vacuum gauge, refrigerant recovery equipment)
-If he conven ional refrigeran and refrigera or oil are mixed in he R407C , he refrigeran may de eriora ed.
-If wa er is mixed in he R407C, he refrigera or oil may de eriora e.
-Since R407C dose no con ain any chlorine, gas leak de ec ors for conven ional refrigeran s will no reac o i .
· Be especially careful when managing the tools.
-If dus , dir , or wa er ge s in he refrigeran cycle, he refrigeran may de eriora e.
· Do not use a charging cylinder.
-Using a charging cylinder may cause he refrigeran o de eriora e.

4
2PART NAMES AND FUNCTIONS
● Indoor (Main) Unit
● Remote controller
● Operation buttons
[PAR-F25MA]
● Once he con rols are se , he same opera ion mode can
be repea ed by simply pressing he ON/OFF bu on.
Au o Air Swing Vane
Disperses airflow up and
down and adjus s he angle
of airflow direc ion.
Grille
Fil ers
Removes dus and pollu an s
from in ake air
Horizon al Air Ou le
Se s horizon al air flow au oma ically
during cooling or dehumidifying.
Air In ake
In akes air from room.
Press his bu on o swi ch he cool,
elec ronic dry (dehumidify), au oma ic
and hea er modes.
OPERATION SWITCH bu on
This se s he room empera ure. The
empera ure se ing can be performed
in 1: uni s
Se ing range
Cooler 19: o 30:
Hea er 17: o 28:
TEMP. ADJUSTMENT bu on
This swi ches be ween con inuous
opera ion and he imer opera ion.
TIMER bu on
This swi ches be ween he opera ion
and s op modes each ime i is pressed.
The lamp on his bu on ligh s during
opera ion.
ON/OFF bu on
Only press his bu on o perform an
inspec ion check or es opera ion.
Do no use i for normal opera ion.
CHECK-TEST RUN bu on
This se s he ven ila ion fan speed.
VENTILATION bu on
This swi ches he horizon al fan
mo ion ON and OFF.
(This bu on does no opera e in his
model)
(When he only LOSSNAY is connec ed.)
LOUVER bu on
This adjus s he ver ical angle of he
ven ila ion.
AIR DIRECTION bu on
This rese s he fil er service indica ion
display
FILTER bu on
This se s he curren ime, s ar ime
and s op ime.
TIME SETTING bu on
This se s he ven ila ion fan speed.
AIR SPEED bu on

5
Caution
●Only he Power display ligh s when he uni is s opped and power is supplied o he uni .
●When power is urned ON for he firs ime he (CENTRAL CTRL) display appears o go off momen arily bu his is no a
malfunc ion.
●When he cen ral con rol remo e con rol uni , which is sold separa ely, is used he ON-OFF bu on, opera ion swi ch bu on
and TEMP. adjus men bu on do no opera e.
●“NOT AVAILABLE” is displayed when he Air speed bu on is pressed.This indica es ha his room uni is no equipped wi h
he fan direc ion adjus men func ion and he louver func ion.
●When power is urned ON for he firs ime, i is normal ha “H0” is displayed on he room empera ure indica ion (For max.
2minu es). Please wai un il his “H0” indica ion has disappeared hen s ar he opera ion.
4
CENTRALLY
CONTROLLED display
This indica es when he uni is
con rolled by op ional fea ures such
as cen ral con rol ype remo e
con roller.
TIMER display
This indica es when he con inuous
opera ion and ime opera ion modes
are se .
I also displays he ime for he imer
opera ion a he same ime as when
i is se .
OPERATION MODE display
This indica es he opera ion mode.
STANDBY display
This indica es when he s andby
mode is se from he ime he sleep
opera ion s ar s un il he hea ing air
is discharged.
DEFROST display
This indica es when he defros
opera ion is performed.
CHECK display
This indica es when a malfunc ion
has occurred in he uni which should
be checked.
CLOCK display
The curren ime , s ar ime and s op
ime can be displayed in en second
in ervals by pressing he ime swi ch
bu on. The s ar ime or s op ime is
always displayed during he imer
opera ion.
●Display
In his display example on he
bo om lef , a condi ion where all
display lamps ligh is shown for
explana ion purposes al hough his
differs from ac ual opera ion.
Opera ion lamp
This lamp ligh s during opera ion,
goes off when he uni s ops and
flashes when a malfunc ion occurs.
POWER display
This lamp ligh s when elec rici y is
supplied o he uni .
SET TEMPERATURE display
This displays he selec ed se ing
empera ure.
FAN SPEED display
This displays he air direc ion.
ROOM TEMPERATURE display
The empera ure of he suc ion air is
displayed during opera ion. The
display range is 8° o 39°C. The
display flashes 8°C when he ac ual
empera ure is less han 8° and
flashes 39°C when he ac ual
empera ure is grea er han 39°C.
display
This display ligh s in he check mode
or when a es opera ion is
performed.
CHECK MODE
TEST RUN
FILTER display
This lamp ligh s when he fil er need
o be cleaned.
AIR DIRECTION display
The selec ed fan speed is displayed.

6
3 SPECIFICATIONS
3-1. Specification
No e 1. Ra ing condi ions (JIS B 8615)
Cooling: Indoor: D.B. 27°C, W.B. 19.5°C
ou door: D.B. 35°C
Hea ing: Indoor: D.B. 21°C
ou door: D.B. 7°C, W.B. 6°C
No e 2. The number indica ed in < > is jus for he grill.
No e 3. Air flow and he noise level are indica ed as High-Medium 1-Medium 2-Low.
I em
V·Hz
kcal/h
BTU/h
kW
kcal/h
BTU/h
kW
kW
kW
A
A
%
%
mm
mm
mm
m3/min
Pa
kW
ømm
ømm
mm
dB
kg
Cooling
capaci y
Power
Hea exchanger
Insula or
Air fil er
Fan ✕ No
Air flow #3
Pipe
dimensions
Uni drain pipe size
Noise level
Produc weigh
Ex erior
(munsell symbol)
Fan mo or
ou pu
Ex ernal
s a ic pressure
Liquid
side
Gas
side
Hea ing
capaci y
F
a
n
Dimensions
Heigh
Wid h
Dep h
Elec ric charac eris ic
Power
supply
Cooling
Hea ing
Cooling
Hea ing
Cooling
Hea ing
S ar ing
curren
Power
fac or
PLFY-P32VKM.UK PLFY-P40VKM.UK PLFY-P50VKM.UK PLFY-P63VKM.UK
Single phase 220V-240V 50 Hz
3,150
12,500
3.7
3,550
14,100
4.1
0.13
0.13
0.60
0.60
90
90
16-15-14-13
37-35.5-34-32
15-14.5-14-13
12.7(1/2")
6.35(1/4")
35-34-32.5-31
17-16-15-14
39-38-36.5-35
20<3.7>
-Uni : Galvanized shee s · S andard grill : ABS resin acrylic coa ing Munsell<0.70y 8.59/0.97>
298<30>
660<760>
660<760>
Cross fin
Turbo fan ✕ 1
0
0.030
Polye hylene shee
PP honeycomb fabric
ID32 (PVC pipe VP-25 connec able)
4,000
15,900
4.7
4,500
17,900
5.2
0.13
0.13
0.60
0.60
90
90
5,000
19,800
5.8
5,600
22,200
6.6
0.14
0.14
0.64
0.64
91
91
6,300
25,000
7.3
7,100
28,200
8.3
0.15
0.15
0.68
0.68
92
92
19<3.7>
15.88(5/8")
9.52(3/8")

7
3-2. Electrical parts specifications
Par s name
Model
Symbol
T
TH21
TH22
TH23
FUSE
MF
C1
MV
DP
DS
LEV
H2
TB2
TB5
(Primary) 50/60Hz 220-240V (Secondary) (18.4V 1.7A)
Resis ance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Resis ance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Resis ance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
250V 6.3A
2.5µF ✕ 400V
240V 28.8W
(L, N, Ear h) 330V 30A
(M1, M2, S) 330V 30A
Transformer
Liquid pipe hermis or
Gas pipe hermis or
Fan mo or capaci or
Drain-up mechanism
Drain sensor
Linear expansion valve
PLFY-P32VKM.UK PLFY-P40VKM.UK PLFY-P50VKM.UK PLFY-P63VKM.UK
Room empera ure
hermis or
Fuse
(Indoor con roller board)
Fan mo or
(wi h inner- hermos a )
inner- hermos a
(Fan mo or)
Vane mo or
(wi h limi swi ch)
Elec ric hea er
(Dew preven ion)
Power supply erminal
block
Transmission erminal
block
6-pole OUTPUT 30W
PAI-V30F
MC8 200V-240V
2.5/2W 5/6R.P.M
PJV-1002
INPUT 8/7.5W 24L/Hr
Hea er resis ance 82Ω/25°C
Thermis or resis ance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
DC12V S epping mo or drive por
dimension 3.2Ω (0~2000pulse)
EDM-402ME
OFF 125°C ± 5°C
ON 85°C ± 20°C

8
4OUTLINES AND DIMENSIONS
PLFY-P32VKM.UK, PLFY-P4 VKM.UK
PLFY-P5 VKM.UK, PLFY-P63VKM.UK
Unit : mm
Models
PLFY-P32VKM.UK
PLFY-P40VKM.UK
Refrigeran pipe
(6.35mmdia)
flared connec ion
1/4F
Refrigeran pipe
(12.7mmdia)
flared connec ion
1/2F
Refrigeran pipe
(9.52mmdia)
flared connec ion
3/8F
Refrigeran pipe
(15.88mmdia)
flared connec ion
5/8F
PLFY-P50VKM.UK
PLFY-P63VKM.UK
12
Ceiling hole
Suspension bol pi ch
Suspension bol M10 or
Air in ake hole
Air ou le hole
Air in ake grille
690~710 25~3525~35 640
660
466
460 66 35
760
117 117
117
435
13554
117
Ceiling hole
Suspension bol pi ch
Suspension bol lower edge
Air ou le hole Air ou le hole
690~710 25~35
25~35
65~80
760 460 466
6635
115
243
253
29830
54 +3
- 2
507 660
54
53
Terminal block for powersupply
Terminal block for
con rol
Drain hole
Drain hole ID32
VP-25 connec ion
W3/8
Feeding hole
(Drain pump)
Leave space of 10~15mm be ween he
op surface of he uni and he ceiling slab.
Ceiling surface
4-Au o vanes
In ake grille opening
/closing side
Vane mo or
Decora ive panel
Con rol wire en ry
Refrigeran piping side
elec ric wire en ry side
Power line en ry
41 25
Liquid pipe
Gas pipe
Op ional
high-efficiency fil er
+3
-2
NOTE 1.The elec rical par s box may be removed during servic-
ing. When connec ing he power line and he con rol
wire,provide enough leng h o he elec ric wires.
NOTE 2.When ins alling he op ional high-efficiency fil er, he
dimension be ween he ransom and ceiling shall be
more han 440mm. Also,when ins alling he op ional
fresh air in ake casemen or he mul i-func ional case-
men , he dimension be ween he ransom and ceiling
shall be more han 440mm. (The op ional high-
efficiency fil er can also be ins alled.)

9
WIRING DIAGRAM
5
PLFY-P32VKM.UK, PLFY-P4 VKM.UK
PLFY-P5 VKM.UK, PLFY-P63VKM.UK
}
PE
GRY
GRY
BLK
BLK
BLK BLK BLK BLK RED RED
WHT RED YLW ORN BRN BLU
M1 TO OUTDOOR UNIT
BC CONTROLLER
REMOTE CONTROLLER
DC24-30V
M2
TB5
(SHIELD)
AC18.4V
AC220-240V
BLU
RED
BLU
BLU
BRN BRN
YLW
YLW
YLW
YLW
WHT
RED
RED
WHT
BLK
(WHT)
FAN1 CNT
(WHT)
TRANS (GRN)
CNV (BLU)
CNP
6.3A
250V
FUSE (RED)
CND CN3T
TRANS
(RED) BLU
BLU
M-NET
(BLU)
CN2M
BRN
BRN
CN23
(GRN)
VANE
POSITION
4
1
CN41
(WHT)
HA
1
CN32
3
(WHT)
REMOTE
SWITCH
CN50
DRAIN
(RED)
CN20
(RED)
INTAKE
CN21
LIQUID
(WHT)
CN29
(BLK)
GAS
CN60
LEV
(WHT)
5
(WHT)
CENTRALLY
CONTROL
1
CN51
1
5
(WHT)
REMOTE
INDICATION
CN52
CN42
(RED)
ADDRESS
CN81
(RED)
ADDRESS
12
HUMIDIFIER
CN25
A.B
SW5
240V
220V SWA
3
2
1
SWB
2
3
41
2
3
4
CN43
ADDRESS
(RED)
1
2
3
4
5
6
7
8
ADDRESS
CN82
(RED)
CONNECTION
No.
SW14
0
SWC
SW1
87654321
OFF
ON
109
00
SW11
SW12
1ST.DIGIT
2ND.DIGIT
3RD.DIGIT
6
BLU
RED
GRN/YLW
L
N
TB2
TO NEXT
INDOOR UNIT
PULL BOX
FUSE(15A)
BREAKER
(15A)
POWER SUPPLY
~/N 220-240V
50Hz
SR3 SR1 ZNR
DS
4
I.B
8
TH21
SW2
SEE
fig1
SEE
fig2
10
LEV
TH22
TH23
T
32
SW4
1
1
0N
12345678923456
SW3
0FF
LED4 LED3 LED5LED2
LED1
4
0N
0FF
27 510 61
H2
GRILLE
MV
LS
1
53
X4
X4
87 23456
F.C
1
1
2
4
3
65 1234211342
MF
1432
13
13
13
13
64523
DP
21
C
321
123
31
14532122112
11
2
1
2
LEGEND
SYMBOL NAME
I.B
SYMBOL
T TRANSFORMER
DRAIN SENSOR
DRAIN WATER LIFTING-UP MACH.
FAN MOTOR (WITH INNER THERMO.)
FAN MOTOR CAPACITOR
VANE MOTOR
LIMIT SWITCH
DEW PREVENTION HEATER
POWER SUPPLY TERMINAL BLOCK
TRANSMISSION TERMINAL BLOCK
LINEAR EXPANSION VALVE
ADDRESS BOARD
MODE SELECTOR
DS
DP
MF
C
MV
LS
H2
TB2
TB5
LEV
A.B
SW1(A.B)
SW5(A.B)
SW11(A.B)
SW12(A.B)
SW14(A.B)
SWA(A.B)
SWB(A.B)
SWC(A.B)
INDOOR CONTROLLER BOARD
CN25 HUMIDIFIER CONNECTOR
REMOTE SWITCH CONNECTOR
HA TERMINAL-A CONNECTOR
CENTRALLY CONTROL CONNECTOR
REMOTE INDICATION CONNECTOR
CAPACITY CORD SWITCH
FUNCTION SELECTOR
UNIT SELECTOR
DRAIN UP MECH RELAY
DEW PREVENTION HEATER RELAY
VANE RELAY
FAN MOTOR RELAY
CN32
CN41
CN51
CN52
SW2
SW3
SW4
SR1
SR3
X4
ZNR
FUSE
F.C
VARISTOR
FUSE(6.3A)
FAN PHASE CONTROL
TH21
TH22
TH23
ROOM TEMPERATURE THERMISTOR
(0:/15k',25:/5.4k')
LIQUID PIPE THERMISTOR
(0:/15k',25:/5.4k')
GAS PIPE THERMISTOR
(0:/15k',25:/5.4k')
VOLTAGE SELECTOR
1ST DIGIT ADDRESS SETTING
2ND DIGIT ADDRESS SETTING
CONNECTION NO.
CEILING HEIGHT SELECTOR
DISCHARGE AIR DIRECTION
OPTION SELECTOR
NAME
NOTE
1.A servicing for ou door uni ,always follow he wiring diagram of ou door uni .
2.Symbol(S) of TB5 is he shield wire connec ion.
3.Symbols used in wiring diagram above are, :Terminal block, :Connec or.
4.The se ing of he SW2 dip swi ches differs for he capaci y.
For he de ail,see he able below.
5.Please se he swi ch SW5 according o he power supply vol age.
Se SW5 o 240V side when he power supply is 230 and 240 vol s.
When he power supply is 220 vol s,se SW5 o 220V side.
PLFY-P32VKM.UK
MODELS SW2
ON
OFF 1234
ON
OFF 1234
56
56
ON
OFF 123456
ON
OFF 123456
SW2
<fig1> <fig2>
MODELS
PLFY-P40VKM.UK
PLFY-P50VKM.UK
PLFY-P63VKM.UK
PLFY-P32VKM.UK
PLFY-P40VKM.UK
PLFY-P50VKM.UK
PLFY-P63VKM.UK
MODELS SW3
ON
OFF 1234
ON
OFF 1234
56789
10
6789 10
5

10
6 REFRIGERANT SYSTEM DIAGRAM
S rainer (#50mesh)
S rainer (#100mesh)
S rainer (#100mesh)
Hea exchanger
Room empara ure hermis or TH21
Gas pipe hermis or TH23
Liquid pipe hermis or TH22
Linear expansion valve
Gas pipe
Flare connec ion
PLFY-P32VKM.UK, PLFY-P4 VKM.UK
PLFY-P5 VKM.UK, PLFY-P63VKM.UK
Gas pipe
Liquid pipe
PLFY-P32,P40VKM.UK
[12.7<1/2F>
[6.35<1/4F>
PLFY-P50,P63VKM.UK
[15.88<5/8F>
[9.52<3/8F>
I em
Service Ref.

11
TROUBLE SHOOTING
7
7-1. How to check the parts PLFY-P•VKM.UK
Par s name Check poin s
Trans
Disconnec he connec or hen measure he resis ance using a es er.
(Surrounding empera ure 10°W~30°C)
Disconnec he connec or hen measure he resis ance using a es er.
Refer o he nex page for a de ail.
Disconnec he connec or and measure he resis ance using a es er.
Measure he resis ance be ween he erminals using a es er.
Measure he resis ance be ween he erminals using a es er.
(Surrounding empera ure 20°C~30°C)
Measure he resis ance be ween he erminals using a es er.
(Surrounding empera ure 20°C~30°C)
Measure he resis ance be ween he erminals using a es er.
Vane mo or
Fan mo or
Linear expansion
valve
Drain-up
mechanism
Drain sensor
(Refer o he hermis or)
(Refer o he hermis or)
Room empera ure
hermis or (TH21)
Liquid pipe hermis or
(TH22)
Gas pipe hermis or
(TH23)
1
2
3
1
2
3
CNT T CN3T
Red Blue
Blue
Whi e
1
1
2
2
3
3
Red
Whi e
Black
Relay connec or
Pro ec or
1
2
Gray
Gray
1
2
3
4
5
Normal
4.3kΩ~9.6kΩ
Abnormal
Open or shor
CNT(1)~(3)
CN3T(1)~(3)
Abnormal
Open or shor
Normal
Approx. 45Ω
Approx. 1Ω
(1)-(3)
(4)-(5)
Abnormal
Open or shor
Normal
82Ω
4.3kΩ~9.6kΩ
Abnormal
Open or shor
Normal
150kΩ i10%
(1)-(5)
Whi e-Red
(2)-(6)
Yellow-Blown
(3)-(5)
Orange-Red
(4)-(6)
Blue-Brown
Abnormal
Open or shor
Normal
PLFY-P·VKM.UK
P32, P40, P50, P63
136.2kΩ
197.5kΩ
Red-Black
Whi e-Black
Mo or erminal
or
Relay connec or
Normal Abnormal
Approx. 14kΩOpen or shor
Normal Abnormal
327ΩOpen or shor
Orange
Red
Whi e
Blue
Brown
Yellow
3
6
1 5
4
2
M

12
Ou pu
(Phase)
Ou pu
{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>
➁Linear expansion valve opera ion
➂Trouble shoo ing
D
A
E
B
C
Open
Ex ra igh ning (80~100pulse)
Pulse number
2000 pulse
Opening a valve
all he way
Close
Valve posi ion (capaci y)
6
5
4
3
2
1
LED1S
Symp om Check poin s
Opera ion circui
failure of he micro
processor.
Disconnec he connec or on he con roller board, hen
connec LED for checking.
Pulse signal will be sen ou for 10 seconds as soon as he
main swi ch is urned on. If here is flashing LED i means
he opera ion circui is abnormal.
Coun ermeasures
Exchange he indoor
con roller board a drive
circui failure.
Linear expansion
valve mechanism is
locked.
Valve doesn' close
comple ely
( hermis or leaking).
Wrong connec ion of
he connec or or
con ac failure.
To check he linear expansion valve, opera e he indoor uni
in fan mode and a he same ime opera e o her indoor uni s
in cooling mode, hen check he pipe empera ure <liquid
pipe empera ure> of he indoor uni by he
ou door mul i con roller board opera ion
moni or. During fan opera ion, linear
expansion valve is closed comple ely and if
here is some leaking, de ec ing
empera ure of he hermis or will decrease.
If he de ec ed empera ure is much lower
han he empera ure indica ed in he
remo e con roller, i means he valve is no closed all he way.
I is no necessary o exchange he linear expansion valve, if
he leakage is small and no making any rouble.
Liquid pipe
hermis or
Linear
expansion
valve
Mo or will idle and make icking noise when mo or is opera ed
while he linear expansion valve is locked. This icking sound
is he sign of he abnormali y.
Check he color of lead wire and missing erminal of he
connec or.
Exchange he linear
expansion valve.
Exchange he linear
expansion valve.
If large amoun of
hermis or is leaked,
exchange he linear
expansion valve.
Disconnec he connec or
a he con roller board,
hen check he con inui y.
Measure he resis ance be ween each coil (red-whi e, red-
orange, brown-yellow, brown-blue) using a es er. I is normal
if he resis ance is in he range of 150"i10%.
Shor or breakage of
he mo or coil of he
linear expansion
valve.
Closing a valve : 1 → 2 → 3 → 4 → 1
Opening a valve : 4 → 3 → 2 → 1 → 4
The ou pu pulse shif s in he above order.
❈ 1. When linear expansion valve opera ion s ops, all ou pu phases
become OFF.
2. A phase in errup ion or when he phase does no shif in order,
he mo or does no ro a e smoo hly and will lock and vibra e.
❈ When he swi ch is urned on, a 2200 pulse opening valve signal
will be sen un il poin Ais reached in order o define he valve
posi ion.
When he valve moves smoo hly, here is no noise or vibra ion
occurring from he linear expansion valve : however, when he
pulse number moves from Eo Aor when he valve is locked,
more noise can be heard han in normal si ua ions.
❈ Noise can be de ec ed by placing he ear agains he screw
driver handle while pu ing he screw driver o he linear
expansion valve.

13
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermis or for lower empera ure >
Tempera ure (:)
Resis ance (k")
4[4
3
62
5
[3
2[2
1[1
[4
[3
[2
[1
Con roller board
Drive circui
Relay connec or
Connec or(CN60)
DC12V
Brown
Red
Blue
Orange
Yellow
Whi e
5
1
3
4
6
M
4
6
2
3
5
1
Blue
Brown
Yellow
Orange
Red
Whi e
Linear expansion valve
<Thermis or Charac eris ic graph>
Room empera ure hermis or(TH21)
Liquid pipe hermis or(TH22)
Gas pipe empera ure hermis or(TH23)
Drain sensor(THD)
Thermis or R0=15k' ±3%
Fixed number of B=3480k' ±2%
R =15exp { 3480( ) }
0:15k'
10:9.6k'
20:6.3k'
25:5.2k'
30:4.3k'
40:3.0k'
Thermis or for
lower empera ure
Linear expansion valve
①Operation summary of the linear expansion valve.
• Linear expansion valve opens/closes hrough a s epping mo or af er receiving he pulse signal from he indoor con roller board.
• Valve posi ion can be changed in propor ion o he number of pulse signals.
<Connec ion be ween he indoor con roller board and he linear expansion valve>
1
273+
1
273
No e : Since he number of he connec or a he con roller board side and he relay connec or are differen , follow he color of
he lead wire.

14
7-2. FUNCTION OF DIP SWITCHES
Swi ch Func ion Remarks
<A delivery>
ON
OFF 1234567 89
10
Address board
Opera ion by swi ch
ON OFF
(No e1) Fan opera ion a Hea ing
mode.
(No e1) Hea er hermo ON is
opera ing.
(No e1) SW 1-7=OFF, SW 1-8=ON
→ Se ing air flow.
SW 1-7=ON, SW 1-8=ON
→ Indoor fan s op.
Pole
Buil -in remo e con roller
Provided
2,500hr
Effec ive
Thermos a ON signal indica ion
Always opera ed while in hea ing mode
Low
Se ing air flow
Effec ive
Effec ive
Fil er clogging de ec ion
Fil er cleaning sign
Air in ake
Remo e indica ion swi ching
Humidifier con rol
Au o rese func ion
Power ON/OFF
Indoor uni
No provided
100hr
No effec ive
Fan ou pu indica ion
Opera ed depending on he condi ion
Ex ra low
Depends on SW1-7
No effec ive
No effec ive
Cooling only
Available
Available
Available
Second se ing
Horizon al angle
Effec ive
No effec ive
5deg.(R-22)/9deg.(R407C)
15deg.
Hea pump / Cool only
Louver
Vane
Vane swing func ion
Vane horizon al angle
Vane cooling limi angle se ing
Hea er 4deg. up
Superhea se ing empera ure
Superhea se ing empera ure
Hea pump
No available
No available
No available
Firs se ing
Down B, C
No effec ive
Effec ive
2deg.(R-22)/6deg.(R407C)
10deg.
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
SW1
Mode
Selec ion
SW2
Capaci y
code
se ing
1~6
1~3
SW3
Func ion
Selec ion
SW4
Uni
Selec ion
Indoor linear expansion
valve opening
Thermis or <in ake empera ure
de ec ion> posi ion
Air flow se in case of
hea hermos a OFF
<A delivery>
ON
OFF 1234567 89
10
Indoor con roller board
(No e1) A cooling mode, each
angle can be used only
for 1 hour.
<A delivery>
ON
OFF 1234
Indoor con roller board
<A delivery>
Se while he uni is off.
Se while he uni is off.
Se while he uni is off.
Se for each capaci y.
Indoor con roller board
(SW 3-9)
PLFY-P32, P40VKM.UK=ON
PLFY-P50, P63VKM.UK=OFF
ON
OFF
1234
ON
OFF
MODELS
PLFY-
P32VKM.UK
PLFY-
P50VKM.UK
PLFY-
P40VKM.UK
PLFY-
P63VKM.UK
SW 2 MODELS SW 2
123456
ON
OFF 123456
ON
OFF 123456
ON
OFF 123456

15
0
5
9
4
8
3
7
2
6
1
0
5
9
4
8
3
7
2
6
1
0
5
9
4
8
3
7
2
6
1
0
5
9
4
8
3
7
2
6
1
0
8
F
7
E
6
D
5
C
4
B
3
A
2
9
1
0
8
F
7
E
6
D
5
C
4
B
3
A
2
9
1
220V 240V
Swi ch
SWA
Se he
Ceiling
heigh
SWB
Discharge
Air
Direc ion
SWC
Op ion
Ro ary swi chRo ary swi ch
SW14
Connec ion
No.
se ing
SW5
Vol age
Selec ion
SW11
1s digi
address
se ing
SW12
2s digi
address
se ing
Pole
(High ceiling)
(S andard)
(Silen )
3
2
1
No used
3 way
4 way
Op ion
S andard Op ion
S andard
1~3
3
SWB
3 way
4 way
2.7m
2.4m
3.0m
2.7m
3.3m
3.0m
2
2
Opera ion by swi ch
✽ Ceiling heigh can be changed depending
on SWB se ing.
Address se ing should be done when ne work
remo e con roller (PAR-F25MA) is being used.
When a aching he op ional high performance
fil er elemen s (fil er casemen ) o he uni , be
sure o a ach i o he op ion side in order
o preven he air flow reducing.
This is he swi ch o be used when he indoor
uni is opera ed wi h R2, R3, series ou door
uni as a se .
If he uni is used a he 230V or 240V area,
se he vol age o 240V.
If he uni is used a he 220V, se he vol age
o 220V.
Remarks
<A delivery>
Address board
<A delivery>
Address board
<A delivery>
Address board
Address can be se while he
uni is s opped.
Address board
<A delivery>
Address board
<A delivery>
Address board
3
2
1
2
3
4
SW12
10
SW11
1
SW12 SW11
SW14
SW14
<A delivery>
220V 240V
SWA 123

16
8DISASSEMBLY PROCEDURE
OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS
1. Removing the air intake grille
(1) Press he bu on.
(2) Open he in ake grille 90°.
(3) Remove he clip.
(4) Slide he shaf in he hinge o he lef and remove he
in ake grille.
PUSH
PUSH bu on
Shaf
In ake grille
4. Removing the fan motor
(1) Remove he fan guard.
(2) Remove he urbo-fan nu and radia or aluminum cap.
(3) Pull ou he urbo fan.
(4) Disconnec he connec or of he fan mo or lead wire.
(5) Remove he 3nu s of fan mo or.
3. Removing the electrical parts box
(1) Remove he fan grand.
(2) Disconnec he lead wire of he vane mo or from he clamp,
and disconnec he red connec or (8P).
(3) Remove 2 of 4 screws from he elec rical par s cover.
(4) Remove he elec rical par s cover.
(5) Disconnec he following connec ors from he box.
Red (3P) for he fan mo or
Whi e (2P) for he indoor coil hermis or
Blue (2P) for he drain pump
Whi e (4P) for he drain sensor
(6) Disconnec he green an i-falling wire of he elec rical par s
box.
(7) Remove 3 of 4 screws from he elec rical par s box, and
loosen he o her screw.
(8) Pull ou he elec rical par s box.
Elec rical par s inside he box
Terminal block
Transformer
Indoor fan capaci or
Room empera ure hermis or
Indoor con roller board
2. Removing the fan guard.
(1) Open he in ake grille.
(2) Remove he 4 screws of he fan guard.
1. INDOOR UNIT Be careful on removing heavy par s.
Photo 1
Photo 2
Photo 3
Figure 1
Photo 4
nu
Fan mo orConnec or
Fan guard screws
Lead wire for
vane mo or
Connec orTerminal blockAn i-falling wire
Radia or
aluminum cap
Capaci or
Nu
Screws
Box
cover
Clamp
Fan guard
Elec rical box Connec or
Room
empera ure
hermis or
Screws
Transformer
Indoor
con roller
board
PLFY-P63VKM.UK

17
OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS
5. Removing the room temperature thermistor
(1) Remove he fan guard.
(2) Remove he elec rical box cover
(3) Remove he holder and he room empera ure hermis or
by pulling he ca ch.
(4) Disconnec he red connec or, CN20, on he indoor
con roller board.
6. Removing the liquid pipe thermistor
(1) Remove he fan guard.
(2) Remove he elec rical box cover.
(3) Remove he elec rical box.
(4) Remove he urbo fan.
(5) Remove he screw of he service panel.
(6) Remove he service panel.
(7) Remove he liquid pipe hermis or(TH22) from he holder
a ached o he copper pipe.
(8) Disconnec he 2-pin whi e connec or.
7. Removing the panel
(1) Open he in ake grille.
(2) Disconnec he connec or he vane mo or.
(3) Remove 4 screws of he panel.
(4) Pulling he emporary handing hook, remove he panel.
8. Removing the drain pan
(1) Remove he panel.
(2) Remove he fan guard.
(3) Remove he rubber bushing.
(4) Drain he remaining wa er in he drain pan.
(5) Remove he elec rical box cover.
(6) Remove he elec rical box.
(7) Remove he screw of he V.A. cover, and remove he V.A.
cover.
(8) Remove each screw of he corner suppor s 1,2, and 3,
and remove he corner suppor s 1,2 and 3.
(9) Pull ou he drain pan.
wPull he lef and righ of he pan gradually.
Be careful no o crack or damage he pan.
Photo 8
Photo 7
Photo 6
Photo 5 Indoor con roller board
Room
empera ure
hermis or
Moun ing hole
Corner
suppor 1
Corner
suppor 3
VA cover
Rubber
bush
Corner
suppor 2
Screws
screws
screws
Panel
Fan guard Temporary hanging hook
Temporary hanging hook
Liquid pipe hermis or(TH22)

18
OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS
9. Removing the drain pump and drain sensor
(1) Remove he panel.
(2) Remove he fan guard.
(3) Remove he elec rical par s cover.
(4) Remove he elec rical par s box.
(5) Remove he drain pan.
(6) Remove 4 screws of he drain pump.
(7) Pulling he clip of he drain hose, pull ou he drain hose
from he drain pump.
(8) Remove he drain sensor and he holder.
(9) Pull ou he drain pump.
11. Removing the heat exchanger
(1) Remove he panel.
(2) Remove he fan guard.
(3) Remove he elec rical par s cover.
(4) Remove he elec rical par s box.
(5) Remove he drain pan.
(6) Remove he urbo fan.
(7) Remove he screw of he coil suppor A.
(8) Remove 2 screws of he coil suppor B.
(9) Remove 2 screws of he coil.
(10) Remove 4 screws of he piping cover of he ou er wall,
and pull ou he piping cover.
Photo 9 Drain hose
Drain pump
Drain sensor
holder
Screw
Clip
Photo 1
Photo 11
Hea exchanger
Coil suppor B
Coil suppor A
Coil screw
Screws of piping
cover
Piping
cover
Gas pipe hermis or(TH23)
1 . Removing the gas pipe thermistor
(1) Remove he panel.
(2) Remove he fan guard.
(3) Remove he elec rical par s cover.
(4) Remove he elec rical par s box.
(5) Remove he drain pan.
(6) Remove he urbo fan.
(7) Remove he gas pipe hermis or(TH23) from he holder
a ached o he copper pipe.
(8) Disconnec he 4-pin connec or.

19
PARTS LIST
9
1
2
3
4
5
6
7
S7 29H 3
S7 29H 5
S7 29H 691
S7 29H 61
S7 29H 98
S7 B 713
S7 A 3 5
1
1
1
2
1
1
1
R.B
AIR OUTLET GRILLE
AIR FILTER
INTAKE GRILLE
HINGE
GRILLE HANGER
REMOTE CONTROLLER
REMOTE CONTROLLER CABLE 1 m
No. Part No. Part Name Specification
Q'ty/set Price
Unit
Amount
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
PLFY-P32/P4 /
P5 /P63
VKM.UK
PANEL PARTS
PLFY-P32VKM.UK
PLFY-P4 VKM.UK
PLFY-P5 VKM.UK
PLFY-P63VKM.UK
7
6

20
10
11
12
35
19
28
2931
32
39
30 24
27
26
25
15
14
7
6
3
4
33
8
9
5
1
2
34
23
22
13
36
38
37
16
21
17
18
20
21
FUNCTIONAL PARTS
PLFY-P32VKM.UK
PLFY-P4 VKM.UK
PLFY-P5 VKM.UK
PLFY-P63VKM.UK