Mitsubishi Electric City Multi PEFY-WP40VMA-E Operating manual

3rd edition
AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Model name
PEFY-WP20VMA-E
PEFY-WP25VMA-E
PEFY-WP32VMA-E
PEFY-WP40VMA-E
PEFY-WP50VMA-E
PEFY-WP63VMA-E
PEFY-WP71VMA-E
PEFY-WP80VMA-E
PEFY-WP100VMA-E
PEFY-WP125VMA-E
2017

ii
HWE1114B GB
Safety Precautions
Read before installation and performing electrical work
Symbol explanations
Thoroughly read the following safety precautions prior to installation.
Observe these safety precautions for your safety.
This equipment may have adverse effects on the equipment on the same power supply system.
Contact the local power authority before connecting to the system.
WARNING
This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or death.
CAUTION
This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or dam-
age to the unit.
Indicates an action that must be avoided.
Indicates important instructions.
Indicates a parts that requires grounding.
Indicates that caution must be taken with rotating parts. (This symbol is on the main unit label.) <Color: Yellow>
Indicates that the parts that are marked with this symbol pose a risk of electric shock. (This symbol is on the main
unit label.) <Color: Yellow>
WARNING
Carefully read the labels affixed to the main unit.
WARNING
Do not use refrigerant other than the type indicated in the
manuals provided with the unit and on the nameplate.
Doing so may cause the unit or pipes to burst, or result in
explosion or fire during use, during repair, or at the time of
disposal of the unit.
It may also be in violation of applicable laws.
MITSUBISHI ELECTRIC CORPORATION cannot be held
responsible for malfunctions or accidents resulting from the
use of the wrong type of refrigerant.
Ask your dealer or a qualified technician to install the unit.
Improper installation by the user may result in water leak-
age, electric shock, or fire.
Properly install the unit on a surface that can withstand its
weight.
Unit installed on an unstable surface may fall and cause in-
jury.
Only use specified cables. Securely connect each cable so
that the terminals do not carry the weight of the cable.
Improperly connected cables may produce heat and start a
fire.
Take appropriate safety measures against wind gusts and
earthquakes to prevent the unit from toppling over.
Improper installation may cause the unit to topple over and
cause injury or damage to the unit.
Only use accessories (i.e., air cleaners, humidifiers, electric
heaters) recommended by Mitsubishi Electric.
Do not make any modifications or alterations to the unit.
Consult your dealer for repair.
Improper repair may result in water leakage, electric shock,
or fire.
Do not touch the heat exchanger fins with bare hands.
The fins are sharp and pose a risk of cuts.
Properly install the unit according to the instructions in the
Installation Manual.
Improper installation may result in water leakage, electric
shock, or fire.
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ii
HWE1114B GB
Precautions for handling units for use with water
WARNING
Have all electrical work performed by an authorized electri-
cian according to the local regulations and the instructions
in this manual. Use a dedicated circuit.
Insufficient power supply capacity or improper installation
of the unit may result in malfunctions of the unit, electric
shock, or fire.
Keep electrical parts away from water.
Wet electrical parts pose a risk of electric shock, smoke, or
fire.
Securely attach the control box cover.
If the cover is not installed properly, dust or water may infil-
trate and pose a risk of electric shock, smoke, or fire.
Only use the type of water that is indicated on the unit when
installing or relocating the unit.
Infiltration of any other types of refrigerant or air into the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.
Consult your dealer or a qualified technician when moving
or reinstalling the unit.
Improper installation may result in water leakage, electric
shock, or fire.
After completing the service work, check for water leakage.
ITo avoid water damage to the furnishings, check for water
leak at the completion of all work.
Do not try to defeat the safety features of the unit.
Forced operation of the pressure switch or the temperature
switch by defeating the safety features for these devices, or
the use of accessories other than the ones that are recom-
mended by Mitsubishi Electric may result in smoke, fire, or
explosion.
Consult your dealer for proper disposal method.
CAUTION
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.
Only use water.
Only use clean water as a refrigerant. The use of water out-
side the specification may damage the refrigerant circuit.
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CONTENTS
HWE1114B GB
I Features
[1] Features.................................................................................................................................... 1
II Components and Functions
[1] Components and Functions...................................................................................................... 2
III Specifications
[1] Specifications............................................................................................................................ 5
1.Specifications.......................................................................................................................... 5
2.Electrical component specifications........................................................................................ 9
IV Outlines and Dimensions
[1] Outlines and Dimensions........................................................................................................ 11
V Wiring Diagram
[1] Wiring Diagram ....................................................................................................................... 14
VI Refrigerant System Diagram
[1] Refrigerant system diagram.................................................................................................... 16
VII Troubleshooting
[1] Troubleshooting ...................................................................................................................... 17
1.Check methods..................................................................................................................... 17
2.DC fan motor (fan motor/indoor control board)..................................................................... 19
3.Address switch setting .......................................................................................................... 20
4.Voltage test points on the control board ............................................................................... 21
5.Dipswitch setting (Factory setting)........................................................................................ 22
VIII Disassembly Procedure
[1] Disassembly Procedure.......................................................................................................... 25
1.Control box ........................................................................................................................... 25
2.Thermistor (Intake air) .......................................................................................................... 26
3.Drainpan ............................................................................................................................... 27
4.Thermistor (Water outlet) (Water inlet) ................................................................................. 28
5.Fan and fan motor ................................................................................................................ 29
6.Heat exchanger .................................................................................................................... 30
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HWE1114B GB
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[ I Features ]
- 1 -
HWE1114B GB
I Features
[1] Features
Model Cooling capacity/Heating capacity
kW
PEFY-WP20VMA-E 2.2/2.5
PEFY-WP25VMA-E 2.8/3.2
PEFY-WP32VMA-E 3.6/4.0
PEFY-WP40VMA-E 4.5/5.0
PEFY-WP50VMA-E 5.6/6.3
PEFY-WP63VMA-E 7.1/8.0
PEFY-WP71VMA-E 8.0/9.0
PEFY-WP80VMA-E 9.0/10.0
PEFY-WP100VMA-E 11.2/12.5
PEFY-WP125VMA-E 14.0/16.0
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[ II Components and Functions ]
- 2 -
HWE1114B GB
II Componen ts and Function s
[1] Components and Functions
1. Indoor (Main) Unit
2. Remote Controller
[PAR-32MAA]
Once the operation mode is selected, the unit will remain in the selected mode until changed.
(1) In case of rear inlet (2) In case of bottom inlet
Air inlet
Air outlet
Air outlet
Air inlet
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[ II Components and Functions ]
- 3 -
HWE1114B GB
(1) Remote Controller Buttons
▌Ⓐ[ON/OFF] button
Press to turn ON/OFF the indoor unit.
▌Ⓑ[SELECT] button
Press to save the setting.
▌Ⓒ[RETURN] button
Press to return to the previous screen.
▌Ⓓ[MENU] button
Press to bring up the Main menu.
▌ⒺBacklit 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)
▌ⒻON/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.
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.
Main display Main menu
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
ⒼⒽⒾⒿ ⒼⒽⒾⒿ
▌ⒼFunction button [F1]
Main display: Press to change the operation mode.
Main menu: Press to move the cursor down.
▌ⒽFunction button [F2]
Main display: Press to decrease temperature.
Main menu: Press to move the cursor up.
▌ⒾFunction button [F3]
Main display: Press to increase temperature.
Main menu: Press to go to the previous page.
▌ⒿFunction button [F4]
Main display: Press to change the fan speed.
Main menu: Press to go to the next page.
Function guide
ⒶⒷⒸⒹ
Ⓔ
Ⓕ
ⒼⒽⒾⒿ
Function buttons
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[ II Components and Functions ]
- 4 -
HWE1114B GB
(2) Remote Controller Display
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 screen (Main menu > Initial setting >
Main display).
▌Full mode ▌Basic mode
* All icons are displayed for explanation.
①
⑪
②㉑
③
⑲
⑳
④
⑤
⑥
⑧
⑩
⑦
⑨
⑫⑬⑭⑮ ⑯ ⑰ ⑱
Fri
Mode Temp. Fan
Room
Cool Auto
Set temp.
①
②
③
④
⑤
Fri
Cool
Mode Temp. Fan
AutoSet temp.
▌①Operation mode
Indoor unit operation mode appears here.
▌②Set temperature
Set temperature appears here.
▌③Clock
Current time appears here.
▌④Fan speed
Fan speed setting appears here.
▌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 set temperature is centrally controlled.
▌⑨
▌⑩
▌⑪Room temperature
Current room temperature appears here.
▌⑫
Appears when the buttons are locked.
▌⑬
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.
▌⑭
Appears when the Weekly timer is enabled.
▌⑮
Appears while the units are operated in the energy-save mode. (Will not
appear on some models of indoor units)
▌⑯
Appears while the outdoor units are operated in the silent mode.
▌⑰
Appears when the built-in thermistor on the remote controller is activated to
monitor the room temperature ( ⑪).
appears when the thermistor on the indoor unit is activated to monitor the
room temperature.
▌⑱
Indicates the vane setting.
▌⑲
Indicates the louver setting.
▌⑳
Indicates the ventilation setting.
▌㉑
Appears when the set temperature range is restricted.
Most settings (except ON/OFF, mode, fan speed, temperature) can
be made from the Main menu.
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[ III Specifications ]
- 5 -
HWE1114B GB
III Specifications
[1] Specifications
1. Specifications
*1 <Cooling> Indoor temperature: 27°CDB/19°CWB (81°FDB/66°FWB) Outdoor temperature: 35°CDB (95°FDB)
<Heating> Indoor temperature: 20°CDB (68°FWB) Outdoor temperature: 7°CDB/6°CWB (45°FDB/43°FWB)
Model PEFY-WP20VMA-E PEFY-WP25VMA-E
Power supply Voltage V 1-phase 220-230-240
Frequency Hz 50/60
Cooling capacity *1 kW 2.2 2.8
Heating capacity *1 kW 2.5 3.2
Power consumption Cooling kW 0.07 0.09
Heating kW 0.05 0.07
Current consumption Cooling kW 0.55 0.64
Heating kW 0.44 0.53
External finish Galvanized
Dimensions Height mm 250
Width mm 700 900
Depth mm 732
Net weight kg 21 26
Heat exchanger Cross fin (Aluminium fin and copper tube)
Fan Type Sirocco fan x 1
Airflow rate
(Low-Mid-High)
m3/min 7.5-9.0-10.5 10.0-12.0-14.0
External static
pressure
Pa 35/50/70/100/150
Motor Output kW 0.085
Air filter PP Honeycomb fabric (washable)
Diameter of
water pipe
Inlet in Rc3/4 screw
Outlet in Rc3/4 screw
Drain pipe dimensions mm [in.] O.D. 32[1-1/4]
Operating noise (Low-Mid-High) 35Pa dB (A) 23-25-28 23-26-29
50Pa 23-26-29 23-27-30
70Pa 24-27-30 24-28-31
100Pa 25-28-32 26-29-33
150Pa 28-32-36 29-33-37
35Pa 28-30-34 28-30-34
50Pa 28-30-34 28-30-34
70Pa 29-32-36 29-32-36
100Pa 29-33-37 29-33-37
150Pa 31-35-40 32-36-40
Measurement location 1
Aux. duct
*Measured in anechoic room.
2m 2m
1.5m
*Measured in anechoic room.
2m 1m
Aux. duct
1.5m
Measurement location 2
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