Mitsubishi Electric PLFY Series User manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
Indoor unit
[Model names] [Service Ref.]
PLFY-P32VKM-A PLFY-P32VKM-A
PLFY-P40VKM-A PLFY-P40VKM-A
PLFY-P50VKM-A PLFY-P50VKM-A
PLFY-P63VKM-A PLFY-P63VKM-A
No. OC253
INDOOR UNIT
Ceiling Cassettes
Series PLFY
CONTENTS
1. SAFETY PRECAUTION···························3
2. PART NAMES AND FUNCTIONS···········5
3. SPECIFICATION······································7
4. OUTLINES AND DIMENSIONS···············9
5. WIRING DIAGRAM································10
6. REFRIGERANT SYSTEM DIAGRAM ·······11
7. TROUBLE SHOOTING··························12
8. DISASSEMBLY PROCEDURE··············17
9. PARTS LIST···········································20
10. OPTIONAL PARTS·················Back cover
R407C
2001
R22
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3
SAFETY PRECAUTION
1
Cautions for using with the outdoor unit which adopts R407C 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.
· 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.
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.
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4
[3] 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] 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.
[2] Notice on repair 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.
Gravimeter
Unit
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5
PART NAMES AND FUNCTIONS
2
● Remote controller
● Operation buttons
[PAR-20MAA]
● Once the controls are set, the same operation mode can
be repeated by simply pressing the ON/OFF button.
Auto Air Swing Vane
Disperses airflow up and
down and adjusts the angle
of airflow direction.
Grille
Filters
Remove dust and pollutants
from return air
Horizontal Air Outlet
Sets airflow horizontal automatically
during cooling or dehumidifying.
Air Intake
Returns air from room.
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
Press this button to switch the cooler,
electronic dry (dehumidify), automatic
and heater modes.
OPERATION SWITCH button
This sets the room temperature. The
temperature setting can be performed
in 1:units
Setting range
Cooler 19:to 30:
Heater 17:to 28:
TEMP. ADJUSTMENT button
This switches between continuous
operation and the timer operation.
TIMER button
This switches between the operation
and stop modes each time it is pressed.
The lamp on this button lights during
operation.
ON/OFF button
Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation.
CHECK-TEST RUN button
This switch the horizontal fan motion
ON and OFF.
(Not available for this model.)
LOUVER button
This adjusts the vertical angle of the
ventilation.
AIR DIRECTION button
This resets the filter service indication
display
FILTER button
This sets the current time, start time
and stop time.
TIME SETTING button
This sets the ventilation fan speed.
AIR SPEED button
● Indoor (Main) Unit
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6
Caution
●Only the Power display lights when the unit is stopped and power supplied to the unit.
●When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch button
and TEMP. adjustment button do not operate.
●“NOT AVAILABLE” is displayed when the Air speed button are pressed.This indicates that this room unit is not equipped
with the fan direction adjustment function and the louver function.
●When power is turned ON for the first time, it is normal that “H0” is displayed on the room temperature indication (For max.
2minutes). Please wait until this “H0” indication disappear then start the operation.
CENTRALLY
CONTROLLED display
This indicates when the unit is con-
trolled by optional features such as
central control type remote controller.
TIMER display
This indicates when the continuous
operation and time operation modes
are set.
It also display the time for the timer
operation at the same time as when
it is set.
OPERATION MODE display
This indicates the operation mode.
STANDBY display
The [STANDBY] symbol is only dis-
played from the time the heating
operation starts unit the heated air
begins to blow.
DEFROST display
This indicates when the defrost oper-
ation is performed.
CHECK display
This indicates when a malfunction
has occurred in the unit which should
be checked.
CLOCK display
The current time , start time and stop
time can be displayed in ten second
intervals by pressing the time switch
button. The start time or stop time is
always displayed during the timer
operation.
●Display
In this display example on the bot-
tom left, a condition where all dis-
play lamps light is shown for expla-
nation purposes although this differs
from actual operation.
Operation lamp
This lamp lights during operation,
goes off when the unit stops and
flashes when a malfunction occurs.
POWER display
This lamp lights when electricity is
supplied to the unit.
SET TEMPERATURE display
This displays the selected setting
temperature.
AIR DIRECTION display
This displays the air direction.
ROOM TEMPERATURE display
The temperature of the suction air
is displayed during operation. The
display range is 8°C to 39°C. The
display flashes 8°C when the actual
temperature is less than 8°C and
flashes 39°C when the actual tem-
perature is greater than 39°C.
display
This display lights in the check mode
or when a test operation is per-
formed.
CHECK MODE
TEST RUN
This lamp lights when the filter need
to be cleaned.
AIR SPEED display
The selected fan speed is displayed.
FILTER display
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
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7
SPECIFICATION
3
3-1. Specification
Note 1. Rating conditions(JIS B 8616)
Cooling : Indoor : D.B. 27°C W.B. 19.0°C
outdoor : D.B. 35°C
Heating : Indoor : D.B. 20°C
outdoor : D.B. 7°C W.B. 6°C
Note 2. The number indicated in < > is just for the grill.
W3. Air flow and the noise level are indicated as High-Middium 1-Middium 2-Low.
Item
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
Insulator
Air filter
Fan ✕No
Air flow W3
Pipe
dimensions
Unit drain pipe size
Noise level W3
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
PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A
3.6
4.0
0.13
0.13
0.60
0.60
4.5
5.0
0.13
0.13
0.60
0.60
5.6
6.3
0.14
0.14
0.64
0.64
7.1
8.0
0.15
0.15
0.68
0.68
16-15-14-13
15-14.5-14-13
12.7(1/2")
6.35(1/4")
35-34-32.5-31
17-16-15-14
Unit : Galvanized sheets · Standard grills : ABS resin acrylic coating Munsell<0.70Y 8.59/0.97>
298<30>
660<760>
660<760>
Cross fin
Turbo fan ✕1
0
0.030
Polyethylene sheet
PP honey comb
O.D.32 (PVC pipe VP-25 connectable)
15.88(5/8")
9.52(3/8")
37-35.5-34-32 39-38-36.5-35
19<3.7> 20<3.7>
Single phase 220-230-240V 50Hz
Single phase 220V 60Hz
V·Hz
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Fan motor
(with Inner-thermostat)
8
3-2. Electrical parts specifications
Model
Parts
name
TH21 Resistance 0:/15k', 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k'
TH22 Resistance 0:/15k', 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k'
Gas pipe thermistor TH23 Resistance 0:/15k', 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k'
Fuse FUSE 250V 6.3A
MF
Inner-thermostat
Fan motor capacitor C
Vane motor MV
Drain-up mechanism DP
Drain sensor DS
Linear expansion valve LEV
Electric heater H2 240V 28.8W
TB2 (L,N,;) 330V 30A
TB5 (M1,M2,S) 250V 20A
(Indoor controller board)
(with limit switch)
(Condensation proof)
Power supply terminal
block
Transmission terminal
block
OFF 125:±5:
ON 85:±20:
MC8 200V-240V
2.5/2W 5/6R.P.M
PCD-4N230ME
INPUT 17/15W 36R/Hr
Heater resistance 0:/6k', 10:/3.9k', 20:/2.6k', 25:/2.2k', 30:/1.8k', 40:/1.3k'
Room temperature
thermistor
Liquid pipe thermistor
DC12V Stepping motor drive port
dimension 3.2 '(0~2000pulse)
EDM-402ME
6-pole OUTPUT 30W
PA1-V30F
Symbol
2.5+x 400V
PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A
TB15 (1,2) 250V 10A
MA remote controller
terminal block
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9
OUTLINES AND DIMENSIONS
4
PLFY-P32VKM-A
PLFY-P40VKM-A
PLFY-P50VKM-A
PLFY-P63VKM-A
Unit : mm
243
42
166
156
65
75 1
2
760
760
466
66
35 460
66 35
460 466
135
435
54 +3
-2
115
65~80
30 298
253
54+3
-2
Air intake hole
Optional high-efficiency filter
Drain pipe VP-25 connection
Control wire entry
Power line entry
Feeding hole (Drain pump)
Suspension bolt M10
or W3/8
Suspension bolt lower edge
Ceiling surface
Leave space of 10~15mm between the top surface of the unit and the ceiling slab
Refrigerant piping side
electric wire entry side Vane motor
Grille
Air outlet hole
Air outlet hole
Air intake hole
4-Auto vanes
Air intake grill
Intake grill opening/closing side
Ceiling hole
Suspension bolt pitch
13
68
660
660
117
117
640
117
117
186
77 507
Suspension bolt pitch
Ceiling hole
690~710 25~3525~35
690~710
25~35 25~35
Drain hole
Terminal block for transmission
Terminal block for
power supply
Terminal block for
MA remote controller
NOTE 1.The electrical parts box may be removed during servicing.
When connecting the power line and the control wire, provide enough length to the electric wires.
NOTE 2.When installing the optional high-efficiency filter, the dimension
between the transom and ceiling shall be more than 440mm. Also, when installing the optional fresh air intake casement or the multi-functional casement, the dimension between the transom and ceiling shall be more than 440mm. (The optional high-efficiency filter can also be installed.)
64
Models 12
Refrigerant pipe
(6.35mm dia)
flared connection
1/4F
Refrigerant pipe
(12.7mm dia)
flared connection
1/2F
PLFY-32VKM-A PLFY-40VKM-A
Refrigerant pipe
(9.52mm dia)
flared connection
3/8F
Refrigerant pipe
(15.88mm dia)
flared connection
5/8F
PLFY-P50VKM-A PLFY-P63VKM-A
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10
5WIRING DIAGRAM
PLFY-P32VKM-A, PLFY-P40VKM-A
PLFY-P50VKM-A, PLFY-P63VKM-A
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11
REFRIGERANT SYSTEM DIAGRAM6
Strainer (#50mesh)
Strainer (#100mesh)
Strainer (#100mesh)
Heat exchanger
Room temparature thermistor TH21
Gas pipe thermistor TH23
Liquid pipe thermistor TH22
Linear expansion valve
Gas pipe
Flare connection
Gas pipe
PLFY-P32VKM-A
PLFY-P40VKM-A
{12.7(1/2’’) {15.88(5/8’’)
Liquid pipe {6.35(1/4’’) {9.52(3/8’’)
Capacity
Item
PLFY-P32VKM-A
PLFY-P40VKM-A
PLFY-P50VKM-A
PLFY-P63VKM-A
PLFY-P50VKM-A
PLFY-P63VKM-A
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12
7TROUBLE SHOOTING
7-1. How to check the parts PLFY-P•VKM-A
Room temperature
thermistor (TH21)
Liquid pipe thermistor
(TH22)
Gas pipe thermistor
(TH23)
Vane motor
Fan motor
Linear expansion
valve
Drain-up
mechanism
Drain sensor
Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 10°C~30°C)
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20;~30;)
Measure the resistance between the terminals using a tester.
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;)
(Refer to the next page for a detail.)
(Refer to the next page for a detail.)
Normal
4.3k'~9.6k'
Abnormal
Open or short
Normal
Approx.14k'
Abnormal
Open or short
Normal
327'
Abnormal
Open or short
Motor terminal
or
Relay connector
Normal
PLFY-P•VKM
P32,P40,P50,P63 Abnormal
Red-Black 136.2'Open or short
White-Black 197.5'
Normal
0.6k'~6.0k'
Abnormal
Open or short
Normal
(1)-(5)
White-Red 150'±10%
Abnormal
Open or short
(2)-(6)
Yellow- Blown (3)-(5) Orange-Red (4)-(6) Blue-Brown
1
1
2
2
3
3
Red
White
Black
Relay connector
Protector
1
2
3
4
5
6
LEV
White
Yellow
Orange
Blue
Red
Brown
CN60
1
2
Gray
Gray
1
2
3
Parts name Check points
(Refer to the next
page for a detail.)
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13
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (:)
Resistance (K")
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
<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'
25:5.2k'
30:4.3k'
40:3.0k'
Thermistor R0=6.0k' ±5%
Fixed number of B=3390k' ±2%
Rt=6exp { 3390( ) }
0:6.0k'
10:3.9k'
20:2.6k'
25:2.2k'
30:1.8k'
40:1.3k'
Thermistor for
lower temperature
Linear expansion valve
①Operation 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>
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.
1
273+t 1
273
-20 0 20406080
< Thermistor for drain sensor >
Temperature (:)
0
1
2
3
4
5
6
7
8
9
10
Resistance (K")
Thermistor for
drain sensor
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Output
(Phase)
Output
{11
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 operation
➂Trouble shooting
D
A
E
B
C
Open
Extra tightning (80~100pulse)
Pulse number
2000 pulse
Opening a valve
all the way
Close
Valve position (capacity)
6
5
4
3
2
1
LED1T
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.
Thermistor
(Liquid pipe)
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.
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
Short or breakage of
the motor coil of the
linear expansion
valve.
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 will locks and vibrates.
❈ 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 posi-
tion.
When the valve move smoothly, there is no noise or vibration
occurring from the linear expansion valve : however, when the
pulse number moves from Eto Aor when the valve is locked,
more noise can be heard 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.
150’10%.
14
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15
7-2. FUNCTION OF DIP SWITCH
Switch Function Remarks
<At delivery>
ON
OFF 123456789
10
Address board
Operation by switch
ON OFF
Note :
w1 Fan operation at Heating
mode.
w2 Heater thermo ON is
operating.
w3 SW 1-7=OFF, SW 1-8=ON
→ Setting air flow.
SW 1-7=ON, SW 1-8=ON
→ Indoor fan stop.
Pole
Built-in remote controller
Provided
2,500hr
Effective
Thermostat ON signal indication
Always operated while the heat in ON w1
Low w3
Setting air flow w3
Effective
Effective
Filter clogging detection
Filter cleaning
Fresh air intake
Remote indication switching
Humidifier control
Air flow set in case of
Heat thermostat OFF
Auto restart function
Power ON/OFF
Indoor unit
Not provided
100hr
Not effective
Fan output indication
Operated depends on the condition w2
Extra low w3
Depends on SW1-7
Not effective
Not effective
Cooling only
Available
Available
Available
Second setting
Horizontal angle
Effective
Not effective
9(5)degrees
15degrees
Heat pump / Cooling only
Louver
Vane
Vane swing function
Vane horizontal angle
Vane cooling limit angle setting w4
Heat 4degrees up
Superheat setting temperature w5
Sub cool setting temperature
Heat pump
Not available
Not available
Not available
First setting
Down B, C
Not effective
Effective
6(2)degrees
10degrees
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
SW1
Mode
Selection
SW2
Capacity
code
setting
1~6
1~5
SW3
Function
Selection
SW4
Unit
Selection
Indoor linear expansion
valve opening
Thermistor <intake temperature
detection> position
<At delivery>
ON
OFF 123456789
10
Indoor controller board
Note :
w4 At cooling mode, each
angle can be used only
1 hour.
w5 The numerical valve in
the parentheses shows
the case which the R22
outdoor unit is connected.
<At delivery>
Indoor controller board
<At delivery>
Set while the unit is off.
Set while the unit is off.
PLFY-P32VKM-A
PLFY-P40VKM-A
ON
OFF 123456789
10
PLFY-P50VKM-A
PLFY-P63VKM-A
Set while the unit is off.
Set for each capacity.
Indoor controller board
ON
OFF 12345 ON
OFF 12345
ON
OFF
MODELS
PLFY-
P32VKM-A PLFY- P50VKM-A
PLFY-
P63VKM-A
PLFY-
P40VKM-A
SW 2 MODELS SW 2
123456
ON
OFF 123456
ON
OFF 123456
ON
OFF 123456
OC253---1.qxp 2/14/01 9:51 AM Page 15
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16
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
Switch
SWA
Ceiling
height
selector
SWB
Discharge
outlet
number
selector
SWC
Option
selector
Rotary switchRotary switch
SW14
Connection
No.
setting
SW5
Voltage
Selection
SW11
1st digit
address
setting
SW12
2nd digit
address
setting
Pole
(High ceiling)
(Standard)
(Silent)
3
2
1
(Not used)
(3 direction)
(4 direction)
2
3
4
Option
Standard Option
Standard
1~3
3
2
2
Operation by switch
✽Ceiling height can be changed depends on
SWB setting.
Address setting should be done when M-NET
Remote controller is being used.
When attach the optional high performance
filter elements (multi function casement) to
the unit, be sure to attach it to the option
side in order to prevent the airflow reducing.
This is the switch to be used when the indoor
unit is operated with R2 series outdoor unit
as a set.
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.
Remarks
<At delivery>
Address board
<At delivery>
Address board
<At delivery>
Address board
Address can be set while the
unit is stopped.
Address board
<At delivery>
Address board
<At delivery>
Address board
3
2
1
2
3
4
SW12
10
SW11
1SW12 SW11
SW14
SW14
<At delivery>
220V 240V
SWB
4 direction
3 direction
4
32.7m 2.4m 2.7m 3.0m 3.0m 3.3m
SWA 1
Silent Standard High
ceiling
23
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17
DISASSEMBLY PROCEDURE
8
OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS
1. Removing the air intake grille
(1) Press the button.
(2) Open the intake grille 90°.
(3) Remove the chip.
(4) Slide the shaft in the hinge to the left and remove the
intake grille.
PUSH
PUSH button
Shaft
Intake grille
4. Removing the fan motor
(1) Remove the fan guard.
(2) Remove the turbo-fan nut and radiator aluminum cap.
(3) Pull out the turbo fan.
(4) Disconnect the connector of the fan motor lead wire.
(5) Remove the 3nuts of fan motor.
3. Removing the electrical parts box
(1) Remove the fan guard.
(2) Disconnect the lead wire of the vane motor from the clamp,
and disconnect the red connector (10P).
(3) Remove 2 of 4 screws from the electrical parts cover.
(4) Remove the electrical parts cover.
(5) Disconnect the following connectors from the box.
Red (3P) for the fan motor
White (2P) for pipe temperature detection / liquid thermistor
Black (2P) for pipe temperature detection / gas thermistor
Blue (2P) for the drain pump
White (3P) for the drain sensor
(6) Disconnect the green anti-falling wire of the electrical parts
box.
(7) Remove 3 of 4 screws from the electrical parts box, and
loosen the other screw.
(8) Pull out the electrical parts box.
Electrical parts inside the box
Terminal block
Indoor fan capacitor
Room temperature thermistor
Indoor controller board
2. Removing the fan guard
(1) Open the intake grille.
(2) Remove the 4 screws of the fan guard.
INDOOR UNIT Be careful on removing heavy parts.
Photo 1
Photo 2
Photo 3
Figure 1
Photo 4
nut
Fan motorConnector
Fan guard screw
Lead wire for
vane motor
ConnectorTerminal blockAnti-falling wire
Radiator
aluminum cap
Capacitor
Nut
Screws
Box
cover
Clamp
Fan guard
Electrical box Connector
Room
temperature
thermistor
Screws Indoor
controller
board
PLFY-P63VKM-A
OC253---1.qxp 2/14/01 9:51 AM Page 17
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18
OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS
5. Removing the room temperature thermistor
(1) Remove the fan guard.
(2) Remove the electrical box cover
(3) Remove the holder and the room temperature thermistor
by pulling the catch.
(4) Disconnect the red connector, CN20, on the indoor con-
troller board.
7. Removing the panel
(1) Open the intake grille.
(2) Disconnect the connector the vane motor.
(3) Remove 4 screws of the panel.
(4) Pulling the temporary hanging hook, remove the panel.
8. Removing the drain pan
(1) Remove the panel.
(2) Remove the fan guard.
(3) Remove the rubber bushing.
(4) Drain the remaining water in the drain pan.
(5) Remove the electrical box cover.
(6) Remove the electrical box.
(7) Remove the screw of the V.A. cover, and remove the V.A.
cover.
(8) Remove each screw of the corner supports 1,2, and 3,
and remove the corner supports 1,2 and 3.
(9) Pull out the drain pan.
wPull the left and right of the pan gradually.
Be careful not to crack or damage the pan.
Photo 8
Photo 7
Photo 6
Photo 5 Indoor controller board
Room
temperature
thermistor
Mounting hole
Corner
support 1
Corner
support 3
VA cover
Rubber
bush
Corner
support 2
Screws
screws
screws
Panel Fan guard Temporary hanging hook
Temporary hanging hook
6. Removing the pipe temperature detection / liquid thermistor
and the pipe temperature detection / gas thermistor
(1) Remove the fan guard.
(2) Remove the electrical box cover.
(3) Remove the electrical box.
(4) Remove the turbo fan.
(5) Remove the screw of the service panel.
(6) Remove the service panel.
(7) Remove the pipe temperature detection / liquid thermistor
and the pipe temperature detection / gas thermistor which
is inserted into the holder installed to the thin copper pipe.
(8) Disconnect the each 2-pin white(liquid) and black(gas)
connector.
Pipe temperature
detection / liquid
thermistor
Pipe temperature
detection / gas
thermistor
OC253---1.qxp 2/14/01 9:51 AM Page 18
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19
OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS
9. Removing the drain pump and drain sensor
(1) Remove the panel.
(2) Remove the fan guard.
(3) Remove the electrical parts cover.
(4) Remove the electrical parts box.
(5) Remove the drain pan.
(6) Remove 4 screws of the drain pump.
(7) Pulling the clip of the drain hose, pull out the drain hose
from the drain pump.
(8) Remove the drain sensor and the holder.
(9) Pull out the drain pump.
10. Removing the heat exchanger
(1) Remove the panel.
(2) Remove the fan guard.
(3) Remove the electrical parts cover.
(4) Remove the electrical parts box.
(5) Remove the drain pan.
(6) Remove the turbo fan.
(7) Remove the screw of the coil support A.
(8) Remove 2 screws of the coil support B.
(9) Remove 2 screws of the coil.
(10) Remove 4 screws of the piping cover of the outer wall,
and pull out the piping cover.
Photo 9 Drain hose
Drain pump
Drain sensor
holder
Screws
Clip
Photo 10
Photo 11
Heat exchanger
Coil support B
Coil support A
Coil screws
Screws of piping
cover
Piping
cover
OC253---1.qxp 2/14/01 9:52 AM Page 19
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20
9PARTS LIST
1
2
3
4
5
6
1
1
1
2
1
1R.B
(BG88P485H02)
AIR OUTLET GRILLE
AIR FILTER
INTAKE GRILLE
HINGE
GRILLE HANGER
REMOTE CONTROLLER
(PAR-20MAA)
No. Part No. Part Name Specification
Q'ty/set Price
Unit
Amount
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
PLFY-P32/P40/
P50/P63
VKM-A
R01 29H 003
R01 29H 500
R01 29H 691
R01 29H 061
—
—
PANEL PARTS
PLFY-P32VKM-A
PLFY-P40VKM-A
PLFY-P50VKM-A
PLFY-P63VKM-A
6
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STANDBY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
OC253---1.qxp 2/14/01 9:52 AM Page 20
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