Mitsubishi Electric PLFY Series Operating manual

PARTS CATALOG (OCB723)
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
No. OCH723
October 2019
TECHNICAL & SERVICE MANUAL
CONTENTS
1. SAFETY PRECAUTION..........................2
2. PARTS NAMES AND FUNCTIONS........2
3. SPECIFICATIONS.................................10
4. 4-WAY AIR FLOW SYSTEM................. 13
5. OUTLINES AND DIMENSIONS............ 16
6. WIRING DIAGRAM...............................17
7. REFRIGERANT SYSTEM DIAGRAM...... 18
8. TROUBLESHOOTING.......................... 19
9. SPECIAL FUNCTION........................... 26
10. DISASSEMBLY PROCEDURE............. 29
INDOOR UNIT
Model name
indication for
MAIN UNIT
Model name
indication for GRILLE
Indoor unit
[Model names] [Service Ref.]
PLFY-WL32VEM-E
PLFY-WL32VEM-ET
PLFY-WL32VEM-E.UK
PLFY-WL32VEM-ET.UK
PLFY-WL40VEM-E
PLFY-WL40VEM-ET
PLFY-WL40VEM-E.UK
PLFY-WL40VEM-ET.UK
PLFY-WL50VEM-E
PLFY-WL50VEM-ET
PLFY-WL50VEM-E.UK
PLFY-WL50VEM-ET.UK
Grille model
[Model names]
PLP-6EA
PLP-6EAE
PLP-6EAL
PLP-6EALE
PLP-6EAJ
PLP-6EAJE
PLP-6EALM
PLP-6EALME

32 3
OCH723
Cautions for units utilizing refrigerant R410A
Only use water.
Only use clean water as a refrigerant. The use of water
outside the specification may damage the refrigerant circuit.
Do not use the existing water piping.
Store the piping materials indoors, and keep both ends of
the pipes sealed until immediately before installation. Keep
the joints wrapped in plastic bags. If dust or dirt enters the
water circuit, it may damage the heat exchanger and cause
water leakage.
.CAUTION
2PARTS NAMES AND FUNCTIONS
Drain pipe
Filter
Vane
Inlet pipe
Outlet pipe
Air outlet
Air intake
(Intake grille)
i-see Sensor
(Option)
Signal receiver
(Option)
2-1. Indoor unit
Model name
indication for
MAIN UNIT
Model name
indication for GRILLE
2-2. WIRED REMOTE CONTROLLER <PAR-40MAA>
: Supported : Unsupported
Function PAR-40MAA
Slim CITY MULTI
Body Product size H × W × D (mm) 120 × 120 × 14.5
LCD Full 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
*Some functions may not be available depending on model types.
Wired remote controller function
The functions which can be used are restricted according to each model.
1SAFETY PRECAUTION

3
OCH723 3
Function buttons
操作部 _new
4 3 2 1
5
6
7890
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.
Fri
Room
Set temp.
Mode Temp. Fan
Cool Auto
A005_new
Main display Main menu
Function guide
▌1[ON/OFF] button
Press to turn ON/OFF the indoor unit.
▌2[SELECT] button
Press to save the setting.
▌3[RETURN] button
Press to return to the previous screen.
▌4[MENU] button
Press to bring up the Main menu.
▌5Backlit LCD
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.
When the backlight is off, pressing any button turns the backlight
on and does not perform its function. (except for the [ON/OFF]
button)
▌6ON/OFF lamp
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.
▌7Function button [F1]
Main display: Press to change the operation mode.
Menu screen: The button function varies with the screen.
▌8Function button [F2]
Main display: Press to decrease temperature.
Main menu: Press to move the cursor left.
Menu screen: The button function varies with the screen.
▌9Function button [F3]
Main display: Press to increase temperature.
Main menu: Press to move the cursor right.
Menu screen: The button function varies with the screen.
▌0Function button [F4]
Main display: Press to change the fan speed.
Menu screen: The button function varies with the screen.
Controller interface
7 8 9 07 8 9 0
Main Main menu
Energy saving
A006_new
Main display:
Cursor
Operation
Vane·Louver·Vent. (Lossnay)
High power
Comfort
A007_new
Menu screen
7 8 9 0

4 5
OCH723
The main display can be displayed in two different modes: “Full” and “Basic”. The factory setting is “Full”. To switch to the “Basic” mode, change the
setting on the Main display setting. (Refer to operation manual included with remote controller.)
▌1Operation mode
▌2Preset temperature
▌3Clock
Current time appears here.
▌4Fan speed
▌5Button function guide
Functions of the corresponding buttons appear here.
▌6
Appears when the ON/OFF operation is centrally controlled.
▌7
Appears when the operation mode is centrally controlled.
▌8
Appears when the preset temperature is centrally controlled.
▌9
Appears when the filter reset function is centrally controlled.
▌0
Indicates when filter needs maintenance.
▌1Room temperature
Current room temperature appears here.
▌2
Appears when the buttons are locked.
▌3
Appears when the On/Off timer, Night setback, or Auto-off timer
function is enabled.
appears when the timer is disabled by the centralized control
system.
<Full mode>
* All icons are displayed for explanation.
Fri
Mode Temp. Fan
Room
Cool Set temp. Auto
<Basic mode>
Fri
Cool
Mode Temp. Fan
Set temp. Auto
2
1
5
6
7
8
90
1
3
9
4
)
!
2 3 4 5 6 7 @ 2
1
5
▌4
Appears when the Weekly timer is enabled.
▌5
Appears while the units are operated in the energy-save mode. (Will
not appear on some models of indoor units)
▌6
Appears while the outdoor units are operated in the silent mode.
(This indication is not available for CITY MULTI models.)
▌7
Appears when the built-in thermistor on the remote controller is
activated to monitor the room temperature (1).
appears when the thermistor on the indoor unit is activated to
monitor the room temperature.
▌8
Indicates the vane setting.
▌9
Indicates the louver setting.
▌)
Indicates the ventilation setting.
▌!
Appears when the preset temperature range is restricted.
▌@
Appears when an energy-saving operation is performed using a “3D i-
See sensor” function. (not available)
▌#Centrally controlled
Appears for a certain period of time when a centrally-controlled item is
operated.
▌$Preliminary error display
An error code appears during the preliminary error.
Most settings (except ON/OFF, mode, fan speed, temperature) can be
made from the Main menu. (Refer to Page 10.)
Display
4
3
$
#
8

5
OCH723
Menu structure
Not all functions are available on all models of indoor units.
Energy saving
Main menu Press the MENU button.
Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button.
Operation
Initial setting menu
Manual vane angle
ON/OFF timer
Auto return
Clock
Main/Sub
Temp. range
Auto-OFF timer
Schedule
Daylight saving time
Clock
Administrator password
Operation locked
3D i-see Sensor
High power
Vane · Louver · Vent. (Lossnay)
Comfort
Timer
Energy saving
Basic setting
Display setting
Operation setting
Restriction
Weekly timer
OU silent mode
Timer menu
Main display
Display details
Contrast • Brightness
Language selection
Auto mode
Continue to the next page.
Night setback

6 7
OCH723
Maintenance menu
Service menu
Drain pump test run
Serial No. input
Lossnay
Diagnosis
Initialize remote controller
Remote controller information
Initialize maintenance info.
Test run
Model name input
Function setting
Error history
Maintenance password
Dealer information input
Error information
Test run menu
Maintenance information
Filter information
Cleaning
Settings menu
Check menu
Other menu
Auto descending panel
Descending operation
Self check
Descending adjustment
Remote controller check
Continue from the previous page.
Not all functions are available on all models of indoor units.

7
OCH723
Main menu list
Main
menu Setting and display items Setting details
Operation Vane · Louver · Vent.
(Lossnay)
Use to set the vane angle.
• Select a desired vane setting from 5 different settings.
Use to turn ON/OFF the louver.
• Select a desired setting from "ON" and "OFF."
Use to set the amount of ventilation.
• Select a desired setting from "Off," "Low," and "High."
High power Use to reach the comfortable room temperature quickly.
• Units can be operated in the High-power mode for up to 30 minutes.
Comfort Manual
vane angle
Use to x each vane angle.
3D i-see Sensor Use to set the following functions for 3D i-see Sensor.
• Air distribution • Energy saving option • Seasonal airow
Timer Timer ON/OFF timer *1Use to set the operation ON/OFF times.
• Time can be set in 5-minute increments.
Auto-Off
timer
Use to set the Auto-Off time.
• Time can be set to a value from 30 to 240 in 10-minute increments.
Weekly timer *1, *2Use to set the weekly operation ON/OFF times.
• Up to 8 operation patterns can be set for each day.
(Not valid when the ON/OFF timer is enabled.)
OU silent mode *1Use to set the time periods in which priority is given to quiet operation of
outdoor units over temperature control. Set the Start/Stop times for each day
of the week.
•Select the desired silent level from "Normal," "Middle," and "Quiet."
Night setback *1Use to make Night setback settings.
• Select "Yes" to enable the setting, and "No" to disable the setting. The temperature
range and the start/stop times can be set.
Energy
saving
Restriction Temp. range *2Use to restrict the preset temperature range.
• Different temperature ranges can be set for different operation modes.
Operation lock Use to lock selected functions.
• The locked functions cannot be operated.
Energy
saving
Auto return *2Use to get the units to operate at the preset temperature after performing
energy saving operation for a specied time period.
• Time can be set to a value from 30 and 120 in 10-minute increments.
(This function will not be valid when the preset temperature ranges are restricted.)
Schedule *1Set the start/stop times to operate the units in the energy saving mode for
each day of the week, and set the energy saving rate.
• Up to 4 energy saving operation patterns can be set for each day.
• Time can be set in 5-minute increments.
• Energy saving rate can be set to a value from 0% or 50 to 90% in 10% increments.
*1Clock setting is required.
*21°C increments.

8
OCH723
Main
menu Setting and display items Setting details
Initial
setting
Basic
setting
Main/Sub When connecting 2 remote controllers, one of them needs to be designated as
a sub controller.
Clock Use to set the current time.
Daylight
saving time
Set the daylight saving time.
Administrator
password
The administrator password is required to make the settings for the following
items.
• Timer setting • Energy saving setting • Weekly timer setting
• Restriction setting • Outdoor unit silent mode setting • Night set back
Display
setting
Main display Use to switch between "Full" and "Basic" modes for the Main display.
• The initial setting is "Full."
Black and white
inversion setting
Use to invert the colors of the display, turning white background to black and
black characters to white.
Display details Make the settings for the remote controller related items as necessary.
Clock: The initial settings are "Yes" and "24h" format.
Temperature: Set either Celsius (°C) or Fahrenheit (°F).
Room temp. : Set Show or Hide.
Auto mode: Set the Auto mode display or Only Auto display.
Contrast •
Brightness
Use to adjust screen contrast and brightness.
Language
selection
Use to select the desired language.
Operation
setting
Auto mode Whether or not to use the Auto mode can be selected by using the button.
This setting is valid only when indoor units with the Auto mode function are
connected.
Mainte-
nance
Error information Use to check error information when an error occurs.
• Check code, error source, refrigerant address, unit model, manufacturing number,
contact information (dealer's phone number) can be displayed.
(The unit model, manufacturing number, and contact information need to be
registered in advance to be displayed.)
Filter information Use to check the lter status.
• The lter sign can be reset.
Cleaning Auto
descending
panel
Use to lift and lower the auto descending panel (Optional parts).
Service Test run Select "Test run" from the Service menu to bring up the Test run menu.
• Test run • Drain pump test run
Input maintenance Select "Input maintenance Info." from the Service menu to bring up the
Maintenance information screen.
The following settings can be made from the Maintenance Information screen.
• Model name input • Serial No. input • Dealer information input • Initialize
maintenance info.
Settings Function setting Make the settings for the indoor unit functions via the remote controller as
necessary.
LOSSNAY setting This setting is required only when the operation of CITY MULTI units is
interlocked with LOSSNAY units.
Check
Error history
Display the error history and execute "delete error history".
Diagnosis Self check: Error history of each unit can be checked via the remote controller.
Remote controller check: When the remote controller does not work properly, use
the remote controller checking function to troubleshoot the problem.
Other Maintenance
password
Use to change the maintenance password.
Initialize remote
controller
Use to initialize the remote controller to the factory shipment status.
remote controller
information
Use to display the remote controller model name, software version, and serial
number.

OCH723 9
2-3. Wireless remote controller
Operation mode
Cool Dry
Fan Auto
(single set point)
Heat 2Auto
(dual set point*)
Temperature setting
The units of temperature can be changed. For
details, refer to the Installation Manual.
Not available
Appears when a non-supported func-
tion is selected.
Battery replacement indicator
Appears when the remaining battery
power is low.
Vane setting
Step 1 Step 2 Step 3 Step 4 Step 5 Swing Auto
Fan speed setting
Set Temperature buttons
Set Time button (Sets the time)
Airow button (Changes up/down airow direction)
Mode button (Changes operation mode)
Timer ON button
Timer OFF button
OFF/ON button
Fan Speed button (Changes fan speed)
SET/SEND button
CANCEL button
Up/Down buttons
Menu button
i-see button
Reset button
Remote controller display
Battery replacement indicator
Transmission area
Not available
Weekly timer ON/OFF button
(not available)
3D i-see Sensor (Air distribution)
Default Direct Indirect When Direct or Indirect
is selected, the vane
setting is set to “Auto”.
* The initial setting is necessary.
Refer to Installation manual.

1110 11
OCH723
3-1. SPECIFICATIONS
3SPECIFICATIONS
Model PLFY-WL32VEM-E
PLFY-WL32VEM-ET
PLFY-WL40VEM-E
PLFY-WL40VEM-ET
PLFY-WL50VEM-E
PLFY-WL50VEM-ET
Power source 1-phase 220–240 V 50 Hz, 1-phase 220 V 60 Hz
Cooling capacity *1
(Nominal) *1
*1
*2
kW 3.6 4.5 5.6
kcal/h 3,100 3,900 4,800
BTU/h 12,300 15,400 19,100
kcal/h 3,150 4,000 5,000
Power input kW 0.03 0.03 0.04
Current input A 0.33 0.35 0.40
Heating capacity *3
(Nominal) *3
*3
kW 4.0 5.0 6.3
kcal/h 3,400 4,300 5,400
BTU/h 13,600 17,100 21,500
Power input kW 0.03 0.03 0.04
Current input A 0.27 0.29 0.34
External nish Galvanized steel sheet
External dimension
H × W × D
mm 258 × 840 × 840
10-3/16 × 33-3/32 × 33-3/32
inch
Net weight kg (lb) 20 (44)
Grille model PLP-6EA
External nish MUNSELL (1.0Y 9.2/0.2)
Dimension
H × W × D
mm 40 × 950 × 950
inch 1-9/16 × 37-13/32 × 37-13/32
Net weight kg (lb) 5 (11)
Heat exchanger Cross n (Aluminum n and copper tube)
FAN Turbo fan × 1 Turbo fan × 1 Turbo fan × 1
External static
press.
Pa 0 0 0
mmH2O 0 0 0
Motor type DC motor
Motor output kW 0.050 0.050 0.050
Driving mechanism Direct-drive
Airow rate
(Low-Mid2-
Mid1-High)
K/min 14 - 15 - 16 - 17 14 - 15 - 16 - 17 14 - 16 - 18 - 20
L/s 233 - 250 - 267 - 283 233 - 250 - 267 - 283 233 - 267 - 300 - 333
cfm 494 - 530 - 565 - 600 494 - 530 - 565 - 600 494 - 565 - 636 - 706
Sound pressure level
(Low-Mid2-Mid1-High)
(measured in anechoic room)
dB <A> 26 - 27 - 29 - 30 26 - 28 - 29 - 31 27 - 29 - 31 - 33
Insulation material PS
Air lter PP honeycomb
Protection device Fuse
Connectable outdoor unit HYBRID CITY MULTI/CMB-WM-V-AA, CMB-WM-V-AB/CMH-WM-V-A
Water pipe
dimensions
Water inlet mm I.D. 20
Water outlet
mm I.D. 20
Field drain pipe size mm (inch) O.D. 32 mm (1-1/4") (PVC pipe VP-25 connectable)
Standard
attachment
Document
Accessory
Installation Manual, Instruction Book
Remark Optional parts
Grille **1 PLP-6EA
Air outlet shutter plate PAC-SJ37SP-E
High efciency lter
element **2 PAC-SH59KF-E
Multi-function
casement PAC-SJ41TM-E
VALVE KIT PAC-SK04VK-E
**1. PLFY-VEM series should be used together with PLP-6EA.
**2. PAC-SJ41TM-E is necessary to use with lter PAC-SH59KF-E.
Installation Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other
items shall be referred to the Installation Manual.
*1 Nominal cooling condition
Indoor :
Outdoor :
Pipe length :
Level difference :
27˚CDB/19˚CWB (81˚FDB/66˚FWB)
35˚CDB (95˚FDB)
7.5 m (24-9/16 ft)
0m (0 ft)
*2 Nominal cooling condition
27˚CDB/19.5˚CWB (81˚FDB/67˚FWB)
35˚CDB (95˚FDB)
5m (16-3/8 ft)
0m (0 ft)
*3 Nominal heating condition
20˚CDB (68˚FDB)
7˚CDB/6˚CWB (45˚FDB/43˚FWB)
7.5 m (24-9/16 ft)
0 m (0 ft)
*1 and *3 are subject to JIS B8615-1.
2. Due to continuing improvement, above specification may be subject to change without notice.
1. Nominal conditions
Notes:
Unit converter
kcal/h = kW × 860
Btu/h = kW × 3,412
cfm = K/min × 35.31
lb = kg/0.4536
*Above specication data
is subject to rounding
variation.