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.