Mitsubishi Electric PLFY-P20VBM-E.UK Operating manual

TECHNICAL & SERVICE MANUAL
Indoor unit
[Model Name]
PLFY-P20VBM-E
PLFY-P25VBM-E
PLFY-P32VBM-E
PLFY-P40VBM-E
PLFY-P50VBM-E
PLFY-P63VBM-E
PLFY-P80VBM-E
PLFY-P100VBM-E
PLFY-P125VBM-E
No. OCH413
REVISED EDITION-E
CONTENTS
1. TECHNICAL CHANGES.........................3
2. SAFETY PRECAUTION.......................... 4
3. PARTS NAMES AND FUNCTIONS........6
4. SPECIFICATIONS.................................13
5. 4-WAY AIR FLOW SYSTEM................. 19
6. OUTLINES AND DIMENSIONS............22
7. WIRING DIAGRAM...............................23
8.
REFRIGERANT SYSTEM DIAGRAM...... 25
9. TROUBLESHOOTING..........................26
10. SPECIAL FUNCTION...........................35
11. DISASSEMBLY PROCEDURE.............42
Notes:
• This manual describes ser-
vice data of the indoor units
only.
• RoHS compliant products
have <G> mark on the spec
name plate.
July 2014
INDOOR UNIT
Model name
indication
PARTS CATALOG (OCB413)
Revision:
• Added
PLFY-P20VBM-E.UK and
PLFY-P25VBM-E.UK in
REVISED EDITION-E.
• Some descriptions have
been modified.
• Please void OCH413
REVISED EDITION-D.
[Service Ref.]
Refer to page 2.
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

2 3
PLFY-P20VBM-E.UK
PLFY-P25VBM-E.UK
PLFY-P32VBM-E.UK
PLFY-P32VBM-E1.UK
PLFY-P32VBM-ER2.UK
PLFY-P32VBM-ER3.UK
PLFY-P40VBM-E.UK
PLFY-P40VBM-E1.UK
PLFY-P40VBM-ER2.UK
PLFY-P40VBM-ER3.UK
PLFY-P50VBM-E.UK
PLFY-P50VBM-E1.UK
PLFY-P50VBM-ER2.UK
PLFY-P50VBM-ER3.UK
PLFY-P63VBM-E.UK
PLFY-P63VBM-E1.UK
PLFY-P63VBM-ER2.UK
PLFY-P63VBM-ER3.UK
PLFY-P80VBM-E.UK
PLFY-P80VBM-E1.UK
PLFY-P80VBM-ER2.UK
PLFY-P80VBM-ER3.UK
PLFY-P100VBM-E.UK
PLFY-P100VBM-ER2.UK
PLFY-P100VBM-ER3.UK
PLFY-P125VBM-E.UK
PLFY-P125VBM-ER2.UK
PLFY-P125VBM-ER3.UK
[Service Ref.]
OCH413E

3
1TECHNICAL CHANGES
PLFY-P32VBM-E.UK PLFY-P32VBM-E1.UK
PLFY-P40VBM-E.UK PLFY-P40VBM-E1.UK
PLFY-P50VBM-E.UK PLFY-P50VBM-E1.UK
PLFY-P63VBM-E.UK PLFY-P63VBM-E1.UK
PLFY-P80VBM-E.UK PLFY-P80VBM-E1.UK
FAN MOTOR (MF) has been changed.
TURBO FAN, NUT and WASHER have been changed.
PLFY-P32VBM-E1.UK PLFY-P32VBM-ER2.UK
PLFY-P40VBM-E1.UK PLFY-P40VBM-ER2.UK
PLFY-P50VBM-E1.UK PLFY-P50VBM-ER2.UK
PLFY-P63VBM-E1.UK PLFY-P63VBM-ER2.UK
PLFY-P80VBM-E1.UK PLFY-P80VBM-ER2.UK
PLFY-P100VBM-E.UK PLFY-P100VBM-ER2.UK
PLFY-P125VBM-E.UK PLFY-P125VBM-ER2.UK
INDOOR CONTROLLER BOARD (I.B) has been changed. (S/W version up)
PLP-6BAJ (Automatic filter elevation panel, option)
The controller board (U.B) has been changed. (only for the panel but not for the service part)
PLFY-P32VBM-ER2.UK PLFY-P32VBM-ER3.UK
PLFY-P40VBM-ER2.UK PLFY-P40VBM-ER3.UK
PLFY-P50VBM-ER2.UK PLFY-P50VBM-ER3.UK
PLFY-P63VBM-ER2.UK PLFY-P63VBM-ER3.UK
PLFY-P80VBM-ER2.UK PLFY-P80VBM-ER3.UK
PLFY-P100VBM-ER2.UK PLFY-P100VBM-ER3.UK
PLFY-P125VBM-ER2.UK PLFY-P125VBM-ER3.UK
INDOOR CONTROLLER BOARD (I.B) has been changed. (S/W version up)
Service ref. have been changed as follows.
OCH413E

54 5
Cautions for units utilizing refrigerant R410A
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.
Handle tools with care.
If dirt, dust or moisture enters 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 enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, 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.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Use the specified refrigerant only.
2SAFETY PRECAUTION
OCH413E

55
[1] Cautions for service
(1) Perform service after recovering 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. Tool name 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 —
OCH413E

767
3PARTS NAMES AND FUNCTIONS
Drain pipe
Filter
Vane
Gas pipe
Liquid pipe
Air outlet
i-see sensor
(option)
Air intake
(Intake grille)
3-1. INDOOR UNIT
OCH413E

77
ON/OFF TEMP
FAN
VANE
TEST RUN
AUTO STOP
AUTO START
h
min
LOUVER
MODE
CHECK
RESETSET CLOCK
MODEL SELECT
NOTAVAILABLE
CHECK TEST RUN
°C
AMPM
AMPM
VANE CONTROL button
Used to change the air flow direction.
CLOCK button
RESET button
SET button
ON/OFF button
The unit is turned ON and OFF alternately
each time the button is pressed.
MODE SELECT button
Used to switch the operation mode between
cooling, drying, heating, auto and fan mode.
CHECK-TEST RUN buttons
Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation.
FAN SPEED SELECT button
Used to change the fan speed.
TIMER display
Displays when in timer operation or when
setting timer.
buttons
SET TEMPERATURE button sets any desired
room temperature.
CLOCK display
Displays the current time.
“ ” “ ” display
Displays the order of timer operation.
“ ” “ ” display
Displays whether timer is on or off.
Buttons used to set the “hour and minute” of
the current time and timer settings.
“h” and “min” buttons
display
display
FAN SPEED display indicates which fan
speed has been selected.
display
The vertical direction of air flow is indicated.
display
Blinks when model is selected.
display
display
CHECK and TEST RUN display indicate that
the unit is being checked or test-run.
display
OPERATION MODE display
Operation mode display indicates which
operation mode is in effect.
AUTO STOP (OFF timer): when this switch
is set, the air conditioner will be
automatically stopped at the preset time.
AUTO START (ON timer): when this switch is
set, the air conditioner will be automatically
started at the preset time.
MODEL SELECT
CHECK TEST RUN
LOUVER button
Changes left/right airflow direction.
(Not available for this model.)
SET TEMP. display indicates the desired
temperature which is set.
Lights up while the signal is transmitted to
the indoor unit when the button is pressed.
TIMER CONTROL buttons
3-2. WIRELESS REMOTE CONTROLLER
OCH413E

89
Function buttons
F1 F2 F3 F4
Press to turn ON/OFF the indoor unit.
ON / OFF button
When the backlight is off, pressing any button turns
the backlight on and does not perform its function.
(except for the (ON / OFF) button)
The functions of the function buttons change depending on
the screen. Refer to the button function guide that appears
at the bottom of the LCD for the functions they serve on a
given screen.
When the system is centrally controlled, the button function
guide that corresponds to the locked button will not appear.
Press to save the setting.
SELECT button
Press to return to the previous screen.
RETURN button
Press to bring up the Main menu.
MENU button
Operation settings will appear.
When the backlight is off, pressing any button turns the
backlight on and it will stay lit for a certain period of time
depending on the screen.
Backlit LCD
This lamp lights up in green while the unit is in operation.
It blinks while the remote controller is starting up or when
there is an error.
ON / OFF lamp
Main display : Press to change the operation mode.
Main menu : Press to move the cursor down.
Function button F1
Main display : Press to decrease temperature.
Main menu : Press to move the cursor up.
Function button F2
Main display : Press to increase temperature.
Main menu : Press to go to the previous page.
Function button F3
Main display : Press to change the fan speed.
Main menu : Press to go to the next page.
Function button F4
Fri
Room
Set temp.
Mode Temp. Fan
Cool Auto
Main
Main display:
Cursor Page
Main menu
Vane·Louver·Vent. (Lossnay)
High power
Timer
Weekly timer
OU silent mode
<Main display> <Main menu>
Function guide
3-3. WIRED REMOTE CONTROLLER <PAR-30MAA><PAR-31MAA>
The functions which can be used are restricted according to each model.
: Supported : Unsupported
Function PAR-30MAA/PAR-31MAA PAR-21MAA
Slim City multi
Body Product size H × W × D (mm) 120 × 120 × 19 120 × 130 × 19
LCD Full Dot LCD Partial Dot LCD
Backlight
Energy-saving Energy-saving operation schedule
Automatic return to the preset temperature
Restriction Setting the temperature range restriction
Function Operation lock function
Weekly timer
On / Off timer
High Power
Manual vane angle
Wired remote controller function
OCH413E

9
Fri
Mode Temp. Fan
Room
Cool Auto
Set temp.
Fri
Cool
Mode Temp. Fan
AutoSet temp.
Fri
Mode Temp. Fan
Room
Cool Auto
Set temp.
Fri
Cool
Mode Temp. Fan
AutoSet temp.
The main display can be displayed in two different modes: "Full" and "Basic".
T
he initial setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting.
<Full mode> <Basic mode>
All icons are displayed for explanation.
Most settings (except ON / OFF, mode, fan speed, temperature) can be made from the Menu screen.
Indoor unit operation mode appears here.
Operation mode
Preset temperature appears here.
Preset temperature
Current time appears here.
Clock (See the Installation Manual.)
Fan speed
Fan speed setting appears here.
Functions of the corresponding buttons appear here.
Button function guide
Appears when the ON/OFF operation is centrally controlled.
Appears when the operation mode is centrally controlled.
Appears when the preset temperature is centrally controlled.
Appears when the lter reset function is centrally controlled.
Appears when lter needs maintenance.
Current room temperature appears here.
Room temperature
(See the Installation Manual.)
Appears when the buttons are locked.
Appears when the On/Off timer or Night setback function is
enabled.
Appears when the Weekly timer is enabled.
Appears while the units are operated in the energy-save
mode.
Appears when the built-in thermistor on the remote control-
ler is activated to monitor the room temperature.
appears when the thermistor on the indoor unit is acti-
vated to monitor the room temperature.
Indicates the vane setting.
Indicates the louver setting.
Indicates the ventilation setting.
Appears when the preset temperature range is restricted.
OCH413E

10 11
Menu structure
Not all functions are available on all models of indoor units.
Energy saving
Auto return
Schedule
Night setback
Main menu Press the MENU button.
Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button.
Vane · Louver · Vent. (Lossnay)
High power
Weekly timer
Restriction
Maintenance
Initial setting
On / Off timer
Auto-Off timer
Temp. range
Operation lock
Manual vane angle
Main / Sub
Timer
Main display
Contrast
Display details
Auto mode
Administrator password
Language selection
Service
Input maintenance info.
Function setting
Check
Self check
Maintenance password
Remote controller check
Test run
Clock
Auto descending panel
Filter information
Error information
Lossnay (City Multi only)
OCH413E