Mitsubishi PEFY-P80VMHS-E, PEFY-P40VMHS-E, PEFY-P50VMHS-E, PEFY-P63VMHS-E, PEFY-P100VMHS-E Technical & Service Manual
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AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Model name
<Indoor unit>
Model name
<Indoor unit>
PEFY-P40VMHS-E, PEFY-P50VMHS-E
PEFY-P63VMHS-E, PEFY-P71VMHS-E
PEFY-P80VMHS-E, PEFY-P100VMHS-E
PEFY-P125VMHS-E, PEFY-P140VMHS-E
Series PEFY
Ceiling Concealed
2017
Indoor unit
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.
This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or death.
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: Yell ow>
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: Yel low>
Carefully read the labels affixed to the main unit.
Ask your dealer or a qualified technician to install the unit.
Improper installation by the user may result in water leakage, 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 injury.
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.
In the event of a refrigerant leak, thoroughly ventilate the
room.
If gaseous refrigerant leaks out and comes in contact with
an open flame, toxic gases will be generated.
Properly install the unit according to the instructions in the
Installation Manual.
Improper installation may result in water leakage, electric
shock, or fire.
Have all electrical work performed by an authorized electrician 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.
WARNING
CAUTION
WARNING
WARNING
1
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 refrigerant that is indicated on the unit
when installing or relocating the unit.
Infiltration of any other types ofrefrigerant or airinto the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.
When installing the unit in a small space, take appropriate
precautions to prevent leaked refrigerant from reaching the
limiting concentration.
Leaked refrigerant gas will displace oxygen and may cause
oxygen starvation. Consult your dealer b efore installing the
unit.
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 a refrigerant
leak.
If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, toxic gases will be gener-
ated.
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.
Do not use a leak detection additive.
Do not use the existing refrigerant piping.
A large amount of chlorine that may be contained in the re-
sidual refrigerant and refrigerator oil in the existing piping
may cause the refrigerator oil in the new unit to deteriorate.
Use refrigerant piping materials made of phosphorus deox-
idized copper. Keep the inner and outer surfaces of the
pipes clean and free of such contaminants as sulfur, oxides,
dust, dirt, shaving particles, oil, and moisture.
Contaminants in the refrigerant piping may cause the refrig-
erator oil to deteriorate.
Store the piping materials indoors, and keep both ends of
the pipes sealed until immediately before brazing. (Keep el-
bows and other joints wrapped in plastic.)
Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerator oil to deteriorate or cause the
compressor to malfunction.
Use a small amount of ester oil, ether oil, or alkyl benzene
to coat flares and flanges.
Infiltration of a large amount of mineral oil may cause the re-
frigerator oil to deteriorate.
Charge the system with refrigerant in the liquid phase.
If gaseous refrigerant is drawn out of the cylinder first, the
composition of the remaining refrigerant in the cylinder will
change and become unsuitable for use.
Only use R410A.
The use of other types of refrigerant that contain chloride
may cause the refrigerator oil to deteriorate.
Useavacuum pump with a check valve.
If a vacuum pump that is not equipped with a check valve is
used, the vacuum pump oil may flow into the refrigerant cy-
cle and cause the refrigerator oil to deteriorate.
Prepare tools for exclusive use with R410A. Do not use the
following tools if they have been used with the conventional
refrigerant: gauge manifold, charging hose, gas leak detec-
tor, check valve, refrigerant charge base, vacuum gauge,
and refrigerant recovery equipment.
If the refrigerant or the refrigerator oil that may be left on these
tools are mixed in with R410A, it may cause the refrigerator oil
in the new system to deteriorate.
Infiltration of water may cause the refrigerator oil to deteriorate.
Leak detectors for conventional refrigerants will not detect an
R410A leak because R410A is free of chlorine.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of the refrigerant
in the cylinder will change and become unsuitable for use.
Exercise special care when handling tools for use with R410A.
Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerator oil to deteriorate.
2
CONTENTS
SAFETY PRECAUTIONS ·························································································· 1
1. FEATURES ··········································································································· 4
2. PART NAMES AND FUNCTIONS ········································································ 5
3. SPECIFICATION ··································································································· 8
4. OUTLINES AND DIMENSIONS ·········································································· 11
5. WIRING DIAGRAM ······························································································ 13
6. REFRIGERANT SYSTEM DIAGRAM ································································· 14
7. TROUBLE SHOOTING ························································································ 15
8. DISASSEMBLY PROCEDURE ············································································· 22
3
PEFY-P40VMHS-E
PEFY-P50VMHS-E
PEFY-P63VMHS-E
PEFY-P71VMHS-E
PEFY-P80VMHS-E
PEFY-P100VMHS-E
PEFY-P125VMHS-E
PEFY-P140VMHS-E
4.5 / 5.0
5.6 / 6.3
7.1 / 8.0
8.0 / 9.0
9.0 / 10.0
11.2 / 12.5
14.0 / 16.0
16.0 / 18.0
FEATURES
1
Indoor unit
Ceiling Concealed
Series PEFY
Models
Cooling capacity/Heating capacity
kW
4
PART NAMES AND FUNCTIONS
2
Air inlet
Air outlet
2-1. Indoor (Main) Unit
5
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
2-2. Remote Controller
[PAR-32MAA]
Once the operation mode is selected, the unit will remain in the selected mode until changed.
(1) Remote Controller Buttons
Function buttons
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.
Function guide
Main menuMain display
Press to turn ON/OFF the indoor unit.
Press to save the setting.
Press to return to the previous screen.
Press to bring up the Main menu.
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)
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.
Main display: Press to change the operation mode.
Main menu: Press to move the cursor down.
Main display: Press to decrease temperature.
Main menu: Press to move the cursor up.
Main display: Press to increase temperature.
Main menu: Press to go to the previous page.
Main display: Press to change the fan speed.
Main menu: Press to go to the next page.
E
F
I
J
G
H
A
B
C
D
E
F
I JG H
ABCD
I JG H I JG H
6
Fri
Mode Temp. Fan
Room
Cool Auto
Set temp.
Fri
Cool
Mode Temp. Fan
AutoSet temp.
(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.
Indoor unit operation mode appears here.
Set temperature appears here.
Current time appears here.
Fan speed setting appears here.
Functions of the corresponding buttons appear here.
Appears when the ON/OFF operation is centrally controlled.
Appears when the operation mode is centrally controlled.
Appears when the set temperature is centrally controlled.
Appears when the filter reset function is centrally controlled.
Current room temperature appears here.
Appears when the buttons are locked.
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.
Appears when the Weekly timer is enabled.
Appears while the units are operated in the energy-save mode. (Will not
appear on some models of indoor units)
Appears while the outdoor units are operated in the silent mode.
Appears when the built-in thermistor on the remote controller is activated to
monitor the room temperature ( ).
appears when the thermistor on the indoor unit is activated to monitor the
room temperature.
Indicates the vane setting.
Indicates the louver setting.
Indicates the ventilation setting.
Appears when the set temperature range is restricted.
Most settings (except ON/OFF, mode, fan speed, temperature) can
be made from the Main menu.
Indicates when filter needs maintenance.
11
12 13 14 15 16 17 18
19
20
1
3
4
9
21
2
5
7
10
11
1
6
8
2
3
4
5
15
16
17
18
19
20
21
9
10
12
13
14
6
7
8
11Room temperature
Operation mode
1
Set temperature
2
Clock
Fan speed
Button function guide
3
4
5
7
3
SPECIFICATION
3-1. Specification
Power source
Model
kWCooling capacity ❇1
kW
kWCooling
Heating
Cooling
Heating
kW
A
A
mm
mm
mm
kg
m
3
/min
Pa 50/100/150/200
kW
mm
mm
dB(A)
20-23-27 24-27-32 24-26-30
Heating capacity ❇1
Power
consumption
Current
External finish
Dimension
Height
Width
Depth
Net weight
Heat exchanger
Fan
Type
Airflow rate
(Lo-Mid-Hi)
External static pressure
❇
2
Motor
Output
Type
Air filter (option)
Refrigerant
pipe dimension
Gas
(Brazed)
Liquid
(Brazed)
Drain pipe dimension
Noise level (Lo-Mid-Hi)
745 1030
35
Cross fin (Aluminum plate fin and copper tube)
Sirocco fan
✕
DC motor
Synthethic fiber unwoven cloth filter(long life)
10.0-12.0-14.0
~
220-240V 50Hz /60Hz
PEFY-P40VMHS-E PEFY-P50VMHS-E
5.64.5
6.35.0
Galvanizing
380
900
1 Sirocco fan✕2
12.7
6.35
32 (1-1/4 inch)
0.121
0.055
0.055
0.41
0.41
0.090
0.090
0.64
0.64
0.075
0.075
0.54
0.54
45
ø
ø
9.52
ø
PEFY-P63VMHS-E
7.1
8.0
ø
15.88
13.5-16.0-19.0
0.244
PEFY-P71VMHS-E
8.0
9.0
15.5-18.0-22.0
Note: ❇1 Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Cooling : Indoor 27˚CDB/19 ˚CWB,Outdoor 35˚CDB (WR2: water 30˚C)
Heating : Indoor 20˚CDB,Outdoor 7˚CDB/6˚CWB (WR2: water 20˚C)
❇
2 The external static pressure is set to 50Pa at factory shipment.
8
Power source
kWCooling capacity ❇1
kW
kWCooling
Heating
Cooling
Heating
kW
A
A
mm
mm
mm
kg
m
3
/min
Pa 50/100/150/200
kW
mm
mm
dB(A) 25-27-30 27-31-34 27-32-36
Heating capacity ❇1
Power
consumption
Current
External finish
Dimension
Height
Width
Depth
Net weight
Heat exchanger
Fan
Type
Airflow rate
(Lo-Mid-Hi)
Motor
Output
Type
Air filter (option)
Refrigerant
pipe dimension
Gas
(Brazed)
Liquid
(Brazed)
Drain pipe dimension
Noise level (Lo-Mid-Hi)
~
1030 1195
45
Cross fin (Aluminum plate fin and copper tube)
DC motor
Synthethic fiber unwoven cloth filter(long life)
18.0-21.5-25.0
220-240V 50Hz /60Hz
PEFY-P80VMHS-E
PEFY-P100VMHS-E
11.29.0
12.510.0
Galvanizing
380
900
Sirocco fan
✕
2
32 (1-1/4 inch)
0.244
0.160
0.160
1.05
1.05
0.190
0.190
1.24
1.24
0.090
0.090
0.63
0.63
51 53
15.88
ø
9.52
ø
PEFY-P125VMHS-E
14.0
16.0
26.5-32.0-38.0
0.375
PEFY-P140VMHS-E
16.0
18.0
28.0-34.0-40.0
Note: ❇1 Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Cooling : Indoor 27˚CDB/19 ˚CWB,Outdoor 35˚CDB (WR2: water 30˚C)
Heating : Indoor 20˚CDB,Outdoor 7˚CDB/6˚CWB (WR2: water 20˚C)
❇
2 The external static pressure is set to 50Pa at factory shipment.
Model
External static pressure
❇
2
9
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