Mitsubishi Electric City Multi PEFY-P06NMAU-E4 Operating manual

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HWE20150 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 COR-
PORATION.
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.

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HWE20150 GB
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 refrigerant 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.
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 before 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 CORPORATION may
result in smoke, fire, or explosion.
Consult your dealer for proper disposal method.
Do not use a leak detection additive.

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HWE20150 GB
Precautions for handling units for use with R410A
CAUTION
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.
Use a vacuum 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 R 410A. 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.

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HWE20150 GB

CONTENTS
HWE20150 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........................................................................................ 8
IV Outlines and Dimensions
[1] Outlines and Dimensions.......................................................................................................... 9
V Wiring Diagram
[1] Wiring Diagram ....................................................................................................................... 11
VI Refrigerant System Diagram
[1] Refrigerant system diagram.................................................................................................... 12
VII Microprocessor Control
[1] Microprocessor Control........................................................................................................... 13
1.Cool operation ...................................................................................................................... 13
2.Drying operation ................................................................................................................... 15
3.Fan operation........................................................................................................................ 16
4.Heat operation ...................................................................................................................... 17
5.Auto operation [Automatic Cool / Heat change over operation]............................................ 18
6.When unit is stopped control mode ...................................................................................... 19
7.Heater control ....................................................................................................................... 19
VIII Troubleshooting
[1] Troubleshooting ...................................................................................................................... 25
1.Check methods..................................................................................................................... 25
2.DC fan motor (fan motor/indoor control board)..................................................................... 29
3.Address switch setting .......................................................................................................... 30
4.Voltage test points on the control board ............................................................................... 31
5.Dipswitch setting (Factory setting)........................................................................................ 32
IX Disassembly Procedure
[1] Disassembly Procedure.......................................................................................................... 35
1.Control box ........................................................................................................................... 35
2.Thermistor (Intake air) .......................................................................................................... 36
3.Drain pump ........................................................................................................................... 36
4.Drain pan .............................................................................................................................. 37
5.Thermistor (Gas pipe) (Liquid pipe) ...................................................................................... 38
6.Fan and fan motor ................................................................................................................ 39
7.Heat exchanger .................................................................................................................... 40

HWE20150 GB

[ I Features ]
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HWE20150 GB
I Features
[1] Features
Model Cooling capacity/Heating capacity
BTU/h kW
PEFY-P06NMAU-E4 6000/6700 1.8/2.0
PEFY-P08NMAU-E4 8000/9000 2.3/2.6
PEFY-P12NMAU-E4 12000/13500 3.5/4.0
PEFY-P15NMAU-E4 15000/17000 4.4/5.0
PEFY-P18NMAU-E4 18000/20000 5.3/5.9
PEFY-P24NMAU-E4 24000/27000 7.0/7.9
PEFY-P27NMAU-E4 27000/30000 7.9/8.8
PEFY-P30NMAU-E4 30000/34000 8.8/10.0
PEFY-P36NMAU-E4 36000/40000 10.6/11.7
PEFY-P48NMAU-E4 48000/54000 14.1/15.8
PEFY-P54NMAU-E4 54000/60000 15.8/17.6

[ II Components and Functions ]
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HWE20150 GB
II Components and Functions
[1] Components and Functions
1. Indoor (Main) Unit
(1) In case of rear inlet (2) In case of bottom inlet
Air inlet
Air outlet
Air outlet
Air inlet

[ II Components and Functions ]
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HWE20150 GB
2. Remote Controller
[PAR-40MAAU]
Once the operation mode is selected, the unit will remain in the selected mode until changed.
(1) Remote Controller Interface
Main display Main menu
⑦⑧⑨⑩ ⑦⑧⑨⑩
Menu screen
⑦⑧⑨⑩
Function buttons
⑥
①
②
③
④
⑤
⑦⑧⑨⑩
Function guide
①[ON/OFF] button
Press to turn ON/OFF the indoor unit.
②[SELECT/HOLD] button
Press to save the setting.
When the Main menu is displayed, pressing this button will enable/disable the
HOLD function.
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.
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.
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.
⑩Function button [F4]
Main display: Press to change the fan speed.
Menu screen: The button function varies with the screen.

[ II Components and Functions ]
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HWE20150 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.
▌Full mode ▌Basic mode
* All icons are displayed for explanation.
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 or Auto-off timer function is enabled.
appears when the timer is disabled by the centralized control system.
appears when the HOLD function is enabled.
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.
㉒Centrally controlled
Appears for a certain period of time when a centrally-controlled item is operated.
㉓Error display
An error code appears during the error.
* When an error code is displayed on the main display, an error is occurring but
the indoor unit can keep its operation. If an error occurs, note the error code and
consult your dealer.
Most settings (except ON/OFF, mode, fan speed, temperature) can
be made from the Main menu.
㉓
㉒
②
③
④
⑤
①
⑥
①
⑨⑧
⑦
⑪
⑩
③
④
⑤
②
㉑
⑲
⑳
⑫⑬⑭⑮⑯ ⑰ ⑱

[ III Specifications ]
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HWE20150 GB
III Specifications
[1] Specifications
1. Specifications
Model PEFY-P06NMAU-E4 PEFY-P08NMAU-E4 PEFY-P12NMAU-E4 PEFY-P15NMAU-E4
Power source 1-phase 208/230V 60Hz
Cooling capacity *1 BTU / h 6,000 8,000 12,000 15,000
(Nominal) *1 kW 1.8 2.3 3.5 4.4
Power input kW 0.042 0.042 0.052 0.062
Current input A 0.42/0.38 0.42/0.38 0.56/0.51 0.64/0.58
Heating capacity *2 BTU / h 6,700 9,000 13,500 17,000
(Nominal) *2 kW 2.0 2.6 4.0 5.0
Power input kW 0.040 0.040 0.050 0.060
Current input A 0.42/0.38 0.42/0.38 0.56/0.51 0.64/0.58
External finish Galvanized steel plate
External dimension H x W x D in. 9-7/8x27-9/16x28-7/8 9-7/8x27-9/16x28-7/8 9-7/8x27-9/16x28-7/8 9-7/8x35-7/16x28-7/8
mm 250 x 700 x 732 250 x 700 x 732 250 x 700 x 732 250 x 900 x 732
Net weight lbs (kg) 47(21) 47(21) 47(21) 58(26)
Heat exchanger Cross fin (Aluminium fin and copper tube)
FAN Type x Quantity Sirocco fan x 1 Sirocco fan x 1 Sirocco fan x 1 Sirocco fan x 2
External in.WG <0.14>-0.20-<0.28>-<0.40>-<0.60>
static press. Pa <35>-50-<70>-<100>-<150>
Motor type DC motor
Motor output kW 0.085 0.085 0.085 0.121
Driving mechanism Direct-driven by motor
Airflow rate cfm 212-265-300 212-265-300 265-318-371 353-424-494
(Low-Mid-High) m3/ min 6.0-7.5-8.5 6.0-7.5-8.5 7.5-9.0-10.5 10.0-12.0-14.0
L / s 100-125-142 100-125-142 125-150-175 167-200-233
Sound pressure level
dB <A> 24-28-30 24-28-30 26-30-34 27-31-34
(Low-Mid-High)
(measured in anechoic room)
Insulation material EPS, Polyethylene foam,Urethane foam
Air filter PP honeycomb fabric
Protection device Fuse
Refrigerant control device LEV
Connectable outdoor unit R410A CITY MULTI
Diameter of Liquid (R410A) in. (mm) 1/4 (6.35) Brazed 1/4 (6.35) Brazed 1/4 (6.35) Brazed 1/4 (6.35) Brazed
refrigerant
pipe Gas (R410A) in. (mm) 1/2 (12.7) Brazed 1/2 (12.7) Brazed 1/2 (12.7) Brazed 1/2 (12.7) Brazed
(O.D.)
Diameter of drain pipe in. (mm) O.D. 1-1/4(32)
Drawing External -
Wiring -
Refrigerant cycle -
Standard Document Installation Manual, Instruction Book
attachment Accessory Washer, Drain hose, Tie band
Optional External heater adapter PAC-YU25HT
parts Filter box PAC-KE91TB-E PAC-KE91TB-E PAC-KE91TB-E PAC-KE92TB-E
Remark Installation Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other
items shall be referred to the Installation Manual.
Due to continuing improvement, above specifications may be subject to change without notice.
Note : *1 Nominal cooling conditions *2 Nominal heating conditions Unit convertor
Indoor : 80degF D.B. / 67degF W.B. 70degF D.B. kcal/h = kW x 860
(26.7degC D.B. / 19.4degC W.B.) (21.1degC D.B.) BTU/h = kW x 3,412
Outdoor : 95degF D.B. 47degF D.B. / 43degF W.B. cfm = m3/min x 35.31
(35degC D.B.) (8.3degC D.B. / 6.1degC W.B.) lbs = kg / 0.4536
Pipe length : 25 ft. (7.6 m) 25 ft. (7.6 m)
Level difference : 0 ft. (0 m) 0 ft. (0 m) *Above specification data is
*The external static pressure is set to 0.20in. WG(50Pa) at factory shipment. subject to rounding variation.
*Due to continuing improvement, above specification may be subject to change without notice.

[ III Specifications ]
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HWE20150 GB
Model PEFY-P18NMAU-E4 PEFY-P24NMAU-E4 PEFY-P27NMAU-E4 PEFY-P30NMAU-E4
Power source 1-phase 208/230V 60Hz
Cooling capacity *1 BTU / h 18,000 24,000 27,000 30,000
(Nominal) *1 kW 5.3 7.0 7.9 8.8
Power input kW 0.082 0.142 0.142 0.142
Current input A 0.82/0.74 1.24/1.12 1.24/1.12 1.24/1.12
Heating capacity *2 BTU / h 20,000 27,000 30,000 34,000
(Nominal) *2 kW 5.9 7.9 8.8 10.0
Power input kW 0.080 0.140 0.140 0.140
Current input A 0.82/0.74 1.24/1.12 1.24/1.12 1.24/1.12
External finish Galvanized steel plate
External dimension H x W x D in. 9-7/8x35-7/16x28-7/8 9-7/8x43-5/16x28-7/8 9-7/8x43-5/16x28-7/8 9-7/8x43-5/16x28-7/8
mm 250 x 900 x 732 250 x 1100 x 732 250 x 1100 x 732 250 x 1100 x 732
Net weight lbs (kg) 58(26) 67(30) 67(30) 67(30)
Heat exchanger Cross fin (Aluminium fin and copper tube)
FAN Type x Quantity Sirocco fan x 2 Sirocco fan x 2 Sirocco fan x 2 Sirocco fan x 2
External in.WG <0.14>-0.20-<0.28>-<0.40>-<0.60>
static press. Pa <35>-50-<70>-<100>-<150>
Motor type DC motor
Motor output kW 0.121 0.121 0.121 0.121
Driving mechanism Direct-driven by motor
Airflow rate cfm 424-512-600 618-742-883 618-742-883 618-742-883
(Low-Mid-High) m3/ min 12.0-14.5-17.0 17.5-21.0-25.0 17.5-21.0-25.0 17.5-21.0-25.0
L / s 200-242-283 292-350-417 292-350-417 292-350-417
Sound pressure level
dB <A> 29-33-37 31-35-39 31-35-39 31-35-39
(Low-Mid-High)
(measured in anechoic room)
Insulation material EPS, Polyethylene foam,Urethane foam
Air filter PP honeycomb fabric
Protection device Fuse
Refrigerant control device LEV
Connectable outdoor unit R410A CITY MULTI
Diameter of Liquid (R410A) in. (mm) 1/4 (6.35) Brazed 3/8 (9.52) Brazed 3/8 (9.52) Brazed 3/8 (9.52) Brazed
refrigerant
pipe Gas (R410A) in. (mm) 1/2 (12.7) Brazed 5/8 (15.88) Brazed 5/8 (15.88) Brazed 5/8 (15.88) Brazed
(O.D.)
Diameter of drain pipe in. (mm) O.D. 1-1/4(32)
Drawing External -
Wiring -
Refrigerant cycle -
Standard Document Installation Manual, Instruction Book
attachment Accessory Washer, Drain hose, Tie band
Optional External heater adapter PAC-YU25HT
parts Filter box PAC-KE92TB-E PAC-KE93TB-E PAC-KE93TB-E PAC-KE93TB-E
Remark Installation Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other
items shall be referred to the Installation Manual.
Due to continuing improvement, above specifications may be subject to change without notice.
Note : *1 Nominal cooling conditions *2 Nominal heating conditions Unit convertor
Indoor : 80degF D.B. / 67degF W.B. 70degF D.B. kcal/h = kW x 860
(26.7degC D.B. / 19.4degC W.B.) (21.1degC D.B.) BTU/h = kW x 3,412
Outdoor : 95degF D.B. 47degF D.B. / 43degF W.B. cfm = m3/min x 35.31
(35degC D.B.) (8.3degC D.B. / 6.1degC W.B.) lbs = kg / 0.4536
Pipe length : 25 ft. (7.6 m) 25 ft. (7.6 m)
Level difference : 0 ft. (0 m) 0 ft. (0 m) *Above specification data is
*The external static pressure is set to 0.20in. WG(50Pa) at factory shipment. subject to rounding variation.
*Due to continuing improvement, above specification may be subject to change without notice.

[ III Specifications ]
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HWE20150 GB
Model PEFY-P36NMAU-E4 PEFY-P48NMAU-E4 PEFY-P54NMAU-E4
Power source 1-phase 208/230V 60Hz
Cooling capacity *1 BTU / h 36,000 48,000 54,000
(Nominal) *1 kW 10.6 14.1 15.8
Power input kW 0.222 0.242 0.252
Current input A 2.01/1.82 2.06/1.87 2.29/2.07
Heating capacity *2 BTU / h 40,000 54,000 60,000
(Nominal) *2 kW 11.7 15.8 17.6
Power input kW 0.220 0.240 0.250
Current input A 2.01/1.82 2.06/1.87 2.29/2.07
External finish Galvanized steel plate
External dimension H x W x D in. 9-7/8x55-1/8x28-7/8 9-7/8x55-1/8x28-7/8 9-7/8x63x28-7/8
mm 250 x 1400 x 732 250 x 1400 x 732 250 x 1600 x 732
Net weight lbs (kg) 84(38) 86(39) 91(41)
Heat exchanger Cross fin (Aluminium fin and copper tube)
FAN Type x Quantity Sirocco fan x 3 Sirocco fan x 3 Sirocco fan x 3
External in.WG <0.14>-0.20-<0.28>-<0.40>-<0.60>
static press. Pa <35>-50-<70>-<100>-<150>
Motor type DC motor
Motor output kW 0.300 0.300 0.300
Driving mechanism Direct-driven by motor
Airflow rate cfm 883-1077-1271 918-1112-1306 989-1201-1413
(Low-Mid-High) m3/ min 25.0-30.5-36.0 26.0-31.5-37.0 28.0-34.0-40.0
L / s 417-508-600 433-525-617 467-567-667
Sound pressure level
dB <A> 35-39-43 35-40-44 34-38-42
(Low-Mid-High)
(measured in anechoic room)
Insulation material EPS, Polyethylene foam,Urethane foam
Air filter PP honeycomb fabric
Protection device Fuse
Refrigerant control device LEV
Connectable outdoor unit R410A CITY MULTI
Diameter of Liquid (R410A) in. (mm) 3/8 (9.52) Brazed 3/8 (9.52) Brazed 3/8 (9.52) Brazed
refrigerant
pipe Gas (R410A) in. (mm) 5/8 (15.88) Brazed 5/8 (15.88) Brazed 5/8 (15.88) Brazed
(O.D.)
Diameter of drain pipe in. (mm) O.D. 1-1/4(32)
Drawing External -
Wiring -
Refrigerant cycle -
Standard Document Installation Manual, Instruction Book
attachment Accessory Washer, Drain hose, Tie band
Optional External heater adapter PAC-YU25HT
parts Filter box PAC-KE94TB-E PAC-KE94TB-E PAC-KE95TB-E
Remark Installation Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other
items shall be referred to the Installation Manual.
Due to continuing improvement, above specifications may be subject to change without notice.
Note : *1 Nominal cooling conditions *2 Nominal heating conditions Unit convertor
Indoor : 80degF D.B. / 67degF W.B. 70degF D.B. kcal/h = kW x 860
(26.7degC D.B. / 19.4degC W.B.) (21.1degC D.B.) BTU/h = kW x 3,412
Outdoor : 95degF D.B. 47degF D.B. / 43degF W.B. cfm = m3/min x 35.31
(35degC D.B.) (8.3degC D.B. / 6.1degC W.B.) lbs = kg / 0.4536
Pipe length : 25 ft. (7.6 m) 25 ft. (7.6 m)
Level difference : 0 ft. (0 m) 0 ft. (0 m) *Above specification data is
*The external static pressure is set to 0.20in. WG(50Pa) at factory shipment. subject to rounding variation.
*Due to continuing improvement, above specification may be subject to change without notice.

[ III Specifications ]
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HWE20150 GB
2. Electrical component specifications
Component Sym-
bol PEFY-P06NMAU-E4 PEFY-P08NMAU-E4 PEFY-P12NMAU-E4
Room temperature
thermistor TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Liquid pipe thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Gas pipe thermistor TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Fuse F1 250 VAC 6.3A
F2 400 VDC 3A
Fan motor MF 8-pole, Output 85W ZWB278D51A
Linear expansion valve LEV 12 VDC Stepping motor (0~2000 pulse)
Power supply terminal
block TB2 (L1, L2) 250V 20A
Transmission terminal
block
TB5
TB15 (1, 2) 250V 15A, (M1, M2, S) 250V 20A
Drain float switch FS Open/short detection
Initial contact resistance 500 mΩor less
Drain pump DP PMD INPUT 3W (13 VDC) 24L/Hr
Component Sym-
bol
PEFY-
P15NMAU-E4
PEFY-
P18NMAU-E4
PEFY-
P24NMAU-E4
PEFY-
P27NMAU-E4
PEFY-
P30NMAU-E4
Room temperature
thermistor TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Liquid pipe thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Gas pipe thermistor TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Fuse F1 250 VAC 6.3A
F2 400 VDC 3A
Fan motor MF 8-pole, Output 121W ZWB278D54A
Linear expansion valve LEV 12 VDC Stepping motor (0~2000 pulse)
Power supply terminal
block TB2 (L1, L2) 250V 20A
Transmission terminal
block
TB5
TB15 (1, 2) 250V 15A, (M1, M2, S) 250V 20A
Drain float switch FS Open/short detection
Initial contact resistance 500 mΩor less
Drain pump DP PMD INPUT 3W (13 VDC) 24L/Hr
Component Sym-
bol PEFY-P36NMAU-E4 PEFY-P48NMAU-E4 PEFY-P54NMAU-E4
Room temperature
thermistor TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Liquid pipe thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Gas pipe thermistor TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ
Fuse F1 250 VAC 6.3A
F2 400 VDC 3A
Fan motor MF 10-pole, Output 300W ZWB3710D01A
Linear expansion valve LEV 12 VDC Stepping motor (0~2000 pulse)
Power supply terminal
block TB2 (L1, L2) 250V 20A
Transmission terminal
block
TB5
TB15 (1, 2) 250V 15A, (M1, M2, S) 250V 20A
Drain float switch FS Open/short detection
Initial contact resistance 500 mΩor less
Drain pump DP PMD INPUT 3W (13 VDC) 24L/Hr

[ IV Outlines and Dimensions ]
- 9 -
HWE20150 GB
IV Outlines and Dimensions
[1] Outlines and Dimensions
1. PEFY-P06, 08, 12, 15, 18, 24, 27, 30, 36, 48, 54NMAU-E4
3-Ø2.9 (1/8) mount hole
Air filter
Drain pipe (O.D. Ø32 (1-1/4)
(Emergency drain)
Liquid pipeGas pipe
Ø12.7
(1/2)
Ø6.35
(1/4)
Ø9.52
(3/8)
Ø15.88
(5/8)
15581500
16
1560170016541600
Fresh air intake Ø100 (3-15/16) knock out hole
954900
AModel
1400
1100
G
FBCDE
1000
14
136015001454
1154 1060 11
1200
1300 1358
1058
700 754
1000
800
860 660
858
9 7658
800 600
(O.D.Ø32 (1-1/4))
Drain pipe
Drain pipe (O.D.Ø32 (1-1/4)) (Gravity drain)
Terminal block (Transmission)
Terminal block (Power source)
Control box
Drain pump
Refrigerant piping brazing connection (gas)
Refrigerant piping brazing connection (liquid)
2XE-Ø2.9 (1/8)
Air inlet
Air outlet
2x2-Ø2.9 (1/8)
120°
120°
(4-15/16)
Ø125
21 (7/8)
23 (15/16)
(DUCT)
200 (7-7/8)
378 (14-15/16)
Unit:mm(in.) Unit:mm(in.)
(63) (65-1/8)
(66-15/16) (61-7/16)
(59-1/16) (61-3/8)
(43-5/16)
(55-1/8) (57-1/4)
(45-7/16) (47-1/4)
(59-1/16) (53-9/16)
(41-3/4) (39-3/8)
(51-3/16) (53-1/2)
(41-11/16)
(33-7/8) (31-1/2)
(33-13/16)
(39-3/8)
(37-9/16)
(35-7/16) (27-9/16) (26) (23-5/8)
(25-15/16)
(29-11/16)
(31-1/2)
(5-3/8)
135
153 (6-1/16)
73 (2-7/8)
100 (3-15/16)
(2-11/16)
(5-3/8)
(Suspension bolt pitch)
18 (3/4) 210 (8-5/16)
40 (1-5/8)
40 (1-5/8)
250 (9-7/8)
40 (1-5/8)
33 (1-5/16) 122 (4-13/16)
D (Duct)20 (13/16)
100 (3-15/16)X(E-1)=F30 (1-3/16)
100 (3-15/16)
217 (8-9/16)
41 (1-5/8)
100 (3-15/16)
356 (14-1/16)
67136
732 (28-7/8)
700 (27-9/16)
32 (1-5/16)
238 (9-3/8)
10 (7/16)
23 (15/16)
178 (7-1/16)
643 (25-3/8)
B (Suspension bolt pitch)
A
10 (7/16)
57 (2-1/4)
58 (2-5/16)
15 (5/8)
Note 1. Use an M10 screw for the suspension bolt (field supply). 2. Keep the service space for maintenance at the bottom. 3. This drawing is for PEFY-P24·27·30NMAU-E4 models, which have 2 fans. PEFY-P06·08·12NMAU-E4 models have 1 fan. PEFY-P15·18NMAU-E4 models have 2 fans. PEFY-P36·48·54NMAU-E4 models have 3 fans. 4. If the inlet duct is used, remove the air filter (supplied with the unit), then install the filter (field supply) at the suction side. 5. Heat air to 0°C (32°F) or higher when taking fresh air with a fresh air intake.
1
2
12
Model
PEFY-P15,18NMAU-E4
PEFY-P24,27,30NMAU-E4
PEFY-P36,48NMAU-E4
PEFY-P54NMAU-E4
PEFY-P06,08,12NMAU-E4
PEFY-P06,08,12NMAU-E4 PEFY-P15,18NMAU-E4
PEFY-P24,27,30NMAU-E4
PEFY-P36,48NMAU-E4
PEFY-P54NMAU-E4
C
G
Inlet air
side view
Unit : mm(in.)
Outlet air
side view
Top
view
Top
Bottom
Opposite piping
side view
Note 5
(Integral lift pump outlet)
Piping
side view
Top
Bottom

[ IV Outlines and Dimensions ]
- 10 -
HWE20150 GB
(
2-9/16
)
Unit : mm(in.)
-7/16
0
65
0
-10
(11-13/16)
(Actual length)
(Accessory)
Less than 700 (27-9/16)
Less than 300
Drain hose
(I.D Ø32 (1-1/4))
(4-7/16) (4-7/16)
P-Ø2.9
(1/8)
6
(1/4)
J
KLK
J
KX (M-1)=N
11 (7/16)
112112
Unit:mm(in.)
PEFY-P54NMAU-E4
HModel
PEFY-P15,18NMAU-E4
PEFY-P24,27,30NMAU-E4
PEFY-P36,48NMAU-E4
PNJKLM
PEFY-P06,08,12NMAU-E4
800
1000 1200 1500 1700
(31-1/2) (39-3/8) (47-1/4)
(59-1/16)
(66-15/16)
44 54
49
54 54 370
320 330 260
150 300
4 4
5 51480
1280
990 780
10 10 10 12 12
(1-3/4)
(2-3/16)
(1-15/16)
(2-3/16) (2-3/16) (14-5/8)
(12-5/8)
(13)
(10-1/4)
(5-15/16)
(11-13/16)
(30-3/4)
(39)
(50-7/16) (58-5/16)
700 900
1100 1600
(27-9/16) (35-7/16) (43-5/16)
(63)
Q
(55-1/8)
1400
250~350
500~600
(2)~(5-15/16)
(19-11/16)~(23-5/8)
(15-3/4)~(19-11/16)
400~500
50~150
150~250
(5-15/16)~(9-7/8)
R
1500 1700
2200
(51-3/16)
(59-1/16)
(66-15/16)
(78-3/4)
2000
1300
(86-5/8)
S
(9-7/8)~(13-13/16)
(11-13/16)
Min. 300mm
(3-15/16~7-7/8)
(17-3/4)
(11-13/16)
50
(2)
700
(27-9/16)
50
(2)
700
(27-9/16)
(17-3/4)
Supply
air
Supply
air
Intake
air
Intake
air
(17-3/4X17-3/4)
Access door 1
(450×450)
475
(18-3/4)
450
Min. 300mm
450
Q
Control box
Control box
Fig.4 Fig.5
Access door 3 Access door 4
Q
50
(2)
777
(30-5/8)
50 (2)
777
(30-5/8)
H
100
~ 200
S
Maintenance
access space Maintenance
access space
Bottom of
indoor unit
Bottom of
indoor unit
(Viewed from the direction
of the arrow
B
)
(Viewed from the direction
of the arrow
B
)
Intake air
(7/16)
(13/16)
Supply air
Min. 10mm
Min. 20mm
Access door 3
Ceiling
B
Fig.3
Ceiling beam
Control box
(7/16)
Intake air
Supply air
(11-13/16)
(17-3/4X17-3/4)
(11-13/16)
(17-3/4)
(17-3/4)
(17-3/4)
(17-3/4)
(2~5-15/16)
Bottom of
indoor unit
(17-3/4X17-3/4)
(Viewed from the direction
of the arrow A)
(3-15/16~7-7/8)
Intake
air
Supply
air
Fig.2
Fig.1
A
Min. 10mm
Min. 300mm
Control box
Access door 2
(450×450)
Ceiling
Ceiling beam
475
(18-3/4)
450
700
(27-9/16)
Min. 300mm
450
100
~ 200
Q
450R
50
~
150 450 Maintenance
access space
Access door 1
(450×450)
(17-3/4X17-3/4)
Access door 2
(450×450)
Control box
(1) When a space of 300mm or more is available below the unit between the unit and the ceiling. (Fig.1) • Create access door 1 and 2 (450x450mm each) as shown in Fig.2. (Access door 2 is not required if enough space is available below the unit for a maintenance worker to work in.) (2) When a space of less than 300mm is available below the unit between the unit and the ceiling. (At least 20mm of space should be left below the unit as shown in Fig.3.) • Create access door 1 diagonally below the control box and access door 3 below the unit as shown in Fig.4. or • Create access door 4 below the control box and the unit as shown in Fig.5. Secure enough access space to allow for the maintenance, inspection, and replacement of the motor, fan, drain pump, heat exchanger, and control box in one of the following ways. Select an installation site for the indoor unit so that it's maintenance access space will not be obstructed by beams or other objects.
[Maintenance access space]

[ V Wiring Diagram ]
- 11 -
HWE20150 GB
V Wiring Diagram
[1] Wiring Diagram
1. PEFY-P06, 08, 12, 15, 18, 24, 27, 30, 36, 48, 54NMAU-E4
NAME
SYMBOL EXPLANATION
SYMBOL NAME
SYMBOL NAME
SYMBOL
DP FS TB2 TB5 TB15 TH21 TH22 TH23 F2 MF LEV
NOTES: 1.Symbols used in wiring diagram are :Connector, :Terminal, (Heavy dotted line):Field wiring. 2.Use copper supply wires. Utilisez des fils d'alimentation en cuivre. 3.A disconnect should be required by local code. Se procurer un sectionneur conforme aux réglementations Locales.
L1
TB2
L2
NOTE 2
OFF
ON
CND
CNMF1
INSIDE SECTION OF CONTROL BOX
SWE
3
CNP
LED1
POWER SUPPLY AC208~230V
60Hz
M1 M2
31
7
S
12
TB15
1
CN3A
3
５
６
７
８
９
０
１
２
３
４
SW12
(10's digit)
SW1 SW2 SW3
SW4
SW21
SW22
CN20
6
CN60
4 3 2 1
DP
M
3〜
LEV
M
(SHIELD)
TO NEXT INDOOR UNIT
FUSE(15A)
PULL BOX
MF
MS
3〜
CNACL
(Red)
SA
U
ZNR001
ZNR002
F1
CN51
CN52
(Green)
CN32
(Red)
(Blue)
(Black)
CN105
(Red)
０
９
８
７
６
５
４
３
２
１
SW11
(1's digit)
０
８
７
６
５
４
３
２
１
SW14
(BRANCH No.)
Ｆ
Ｅ
Ｄ
Ｃ
Ｂ
Ａ
９
LED2
CN90
FS
3
CN44
4
12 34
12
TH22
CN2A
(Black)
I.B.
CN41
12
41
5
DC280−340V
Rectifier circuit
CN27
(Red)
F2
CN22
(Green)
CN4F
TH23 TH21
TB5
56
74156
21
13
CN24-1
13
CN3M
(Yellow)
(Yellow)
CN24-2 (Blue)
NOTE 3
Drain Pump Float switch Power source terminal block Transmission terminal block Transmission terminal block Thermistor (inlet air temp. detection) Thermistor (piping temp.detection/liquid) Thermistor (piping temp.detection/gas)
CN2A
Varistor
Connector (0-10V Analog input)
CN32
Connector (Remote switch)
CN41
Connector (HA terminal-A)
CN51
Connector (Centrally control)
CN52
Connector (Remote indication)
CN90
Connector (Wireless)
CN105
Connector (IT terminal)
SW1
Switch (for mode selection)
SW2
Switch (for capacity code)
SW3
Switch (for mode selection)
SW14
Switch (BRANCH No.) Switch (for static pressure selection) Connector
(emergency operation)
SW21 SW22
Switch (Wireless pair No.)
SWE
LED1
LED(Power supply)
LED2
LED(Remote controller supply)
SA Arrester
F1
ZNR001,002
Fuse AC250V 6.3A (TP) M-BL8A04
SW4
Switch (for model selection)
SW11
Switch (1's digit address set) Switch (10's digit address set)
SW12
I.B. Indoor controller board I.B. Indoor controller board
Fuse DC400V 3A SHV11
CN27
Connector (Damper)
Fan Motor
CN22
Connector (Fan control)
CN24-1
Connector (Heater control 1st) Connector (Heater control 2nd)
CN24-2
Linear expansion valve
TO OUT DOOR UNIT BC CONTROLLER REMOTE CONTROLLER
TO MA REMOTE CONTROLLER
U
t°t°t°

[ VI Refrigerant System Diagram ]
- 12 -
HWE20150 GB
VI Refrigerant System Diagram
[1] Refrigerant system diagram
(A) Gas pipe thermistor TH23
(B) Gas pipe
(C) Liquid pipe
(D) Brazed connections
(E) Strainer (#100 mesh)
(F) Linear expansion valve
(G) Liquid pipe thermistor TH22
(H) Heat exchanger
(I) Room temperature thermistor TH21
Capacity PEFY-P06, 08, 12, 15, 18NMAU-E4 PEFY-P24, 27, 30, 36, 48, 54NMAU-E4
Gas pipe ø12.7 [1/2] ø15.88 [5/8]
Liquid pipe ø6.35 [1/4] ø9.52 [3/8]
(H)
(I)
(F)
(E)(E)
(C)
(G)
(A)
(D)
(B)

[ VII Microprocessor Control ]
- 13 -
HWE20150 GB
VII Microprocessor Control
[1] Microprocessor Control
1. Cool operation
1. Termoregulating function
(1) Thermoregulating function (Function to prevent restarting for 3 minutes)
Room temperature desired temperature + 2°F ···Thermo ON
Room temperature desired temperature ···Thermo OFF
(2) Anti-freezing control (Frost Prevention control of indoor unit)
Detected condition:
When BOTH conditions 1 and 2 have been meet, the indoor LEV will close to minimum Thermo OFF* position until released.
1) Indoor unit has been Thermo ON* in Cool/Dry mode for at least 16 min.
2) When the liquid pipe temp (TH22) or gas pipe temp (TH23) is 33.8°F or less, continuously for 3 min.
Released condition:
Anti-freezing control is cancelled when ANY one of the following conditions is satisfied, and an additional 3 minutes have
passed.
1) Liquid pipe temp (TH22) and gas pipe temp (TH23) are 50°F or above continuously for 1 min.
2) The condition of the Thermo OFF* has become complete by thermal-regulating (unit satisfies by set point).
3) The operation mode becomes a mode other than COOL or Dry.
4) The operation is stopped (unit is turned off).
5) Three min have passed from start of anti-freezing control.
*Thermo OFF = The IC coil is not actively cooling or heating.
*Thermo ON = The IC coil is actively cooling or heating.
Example:
<How to operate>
1. Press POWER [ON/OFF] button.
2. Press the [F1] button to display Cool.
3. Press the [F2] or [F3] button to set the desired temperature.
The set temperature changes 2°F when the [F2] or [F3] button is
pressed one time. Cooling 67 to 87°F
33.8°F
TH22
16 min after start cooling operation 3 min 4~6 min
Thermo OFF
Thermo ON Thermo ON
Resume cooling operation
▪ [50°F or above (TH22 and TH23) for 1 min] and 3 min passed
or
▪ 6 min passed
33.8°F or less (TH22 or TH23) for 3 min