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Air-Conditioners For Building Application
TECHNICAL & SERVICE MANUAL
Series PEFY
<Indoor unit>
PEFY-P15NMHU-E,PEFY-P18NMHU-E
Models
PEFY-P24NMHU-E,PEFY-P27NMHU-E
PEFY-P30NMHU-E,PEFY-P36NMHU-E
PEFY-P48NMHU-E,PEFY-P54NMHU-E
PEFY-P72NMHU-E,PEFY-P96NMHU-E
INDOOR UNIT
Ceiling Concealed
CONTENTS
SAFETY PRECAUTIONS ·························1
1. FEATURES ···········································3
2. PART NAMES AND FUNCTIONS ········4
3. SPECIFICATION ···································6
4. OUTLINES AND DIMENSIONS············8
5. WIRING DIAGRAM ·····························10
7. TROUBLE SHOOTING ·······················13
8. DISASSEMBLY PROCEDURE ··········· 16
For use with the R410A & R22
2005
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12
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Table of Contents
Related Manuals for Mitsubishi Electric PEFY-P15NMHU-E
Summary of Contents for Mitsubishi Electric PEFY-P15NMHU-E
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Page 1: Table Of Contents
2005 Air-Conditioners For Building Application TECHNICAL & SERVICE MANUAL Ceiling Concealed Series PEFY <Indoor unit> PEFY-P15NMHU-E,PEFY-P18NMHU-E Models PEFY-P24NMHU-E,PEFY-P27NMHU-E PEFY-P30NMHU-E,PEFY-P36NMHU-E PEFY-P48NMHU-E,PEFY-P54NMHU-E PEFY-P72NMHU-E,PEFY-P96NMHU-E CONTENTS SAFETY PRECAUTIONS ·························1 1. FEATURES ···········································3 2. PART NAMES AND FUNCTIONS ········4 3. SPECIFICATION ···································6 4. OUTLINES AND DIMENSIONS············8 5. -
Page 2: Safety Precautions
- Inadequate strength may cause the unit to fall down, resulting in is shorted and operated forcibly, or parts other than those specified injuries. by Mitsubishi Electric are used, fire or explosion may result. • Use the specified cables for wiring. Make the connections se- curely so that the outside force of the cable is not applied to the •... -
Page 3: R410A Refrigerant
Precautions for devices that use Warning: • Note the following when building a heater in the air R410A refrigerant conditioning system. - Leave enough space between units for proper ventilation so that Caution: the indoor unit temperature does not exceed 40˚C when •... -
Page 4: Features
FEATURES Ceiling Concealed Series PEFY Indoor unit Cooling capacity/Heating capacity Models BTU / h PEFY-P15NMHU-E 4.4 / 5.0 15000 / 17000 PEFY-P18NMHU-E 5.3 / 5.9 18000 / 20000 PEFY-P24NMHU-E 7.0 / 7.9 24000 / 27000 PEFY-P27NMHU-E 7.9 / 8.8 27000 / 30000 PEFY-P30NMHU-E 8.8 / 10.0... -
Page 5: Part Names And Functions
PART NAMES AND FUNCTIONS G Indoor (Main) Unit Air outlet Air inlet G Remote controller [PAR-21MAA] Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. [Operation buttons] TEMP. ON/OFF MENU ON/OFF FILTER BACK MONITOR/SET... - Page 6 [Display] CENTRALLY CONTROLLED 1Hr. ON OFF CLOCK CHECK FILTER CHECK MODE TEST RUN STAND BY ERROR CODE FUNCTION NOT AVAILABLE DEFROST TEMP. ON/OFF A Current time/Timer B Centralized control C Timer OFF D Timer indicator E Operation mode: COOL, DRY, AUTO, FAN, HEAT...
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Page 7: Specification
Heating: Indoor: 21.1 ˚C [70 ˚F] DB Outdoor: 8.3 ˚C [47 ˚F] DB/6.1 ˚C [43 ˚F] WB *2 The operating noise is the data that was obtained in an anechoic room. *3 As for the factory setting is below. PEFY-P-NMHU-E series PEFY-P15NMHU-E PEFY-P18NMHU-E PEFY-P24NMHU-E PEFY-P27NMHU-E PEFY-P30NMHU-E... - Page 8 3-2. Electrical parts specifications Model PEFY- PEFY- PEFY- PEFY- PEFY- PEFY- PEFY- PEFY- PEFY- PEFY- Symbol Parts NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E name Tranrsformer (Primary) 50/60Hz 220-240V (Secondry) (23.5V 0.9A) Room Resistance0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ, temperature TH21 30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.0kΩ thermistor Liquid pipe Resistance0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ,...
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Page 9: Outlines And Dimensions
OUTLINES AND DIMENSIONS PEFY-P15·18·24·27·30·36·48·54NMHU-E Unit :mm(in.) - Page 10 PEFY-P72 · 96NMHU-E Unit :mm(in.)
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Page 11: Wiring Diagram
WIRING DIAGRAM PEFY-P15·18·24·27·30·36·48·54NMHU-E... - Page 12 PEFY-P72·96NMHU-E...
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Page 13: Refrigerant System Diagram
Liquid pipe thermistor TH22 Flared joints(Type 15~54) Brazed joints(Type 72·96) Heat exchanger Linear expansion valve Strainer (#100mesh) Strainer (#100mesh) Room temperature thermistor TH21 mm <in.> Capacity PEFY-P15NMHU-E PEFY-P18NMHU-E PEFY-P24,27,30NMHU-E Item ø ø 12.7 (1/2) 15.88 (5/8) R410A Gas pipe ø... -
Page 14: Trouble Shooting
TROUBLE SHOOTING 7-1. How to check the parts Parts name Check points Room temperature Disconnect the connector, then measure the resistance using a tester. thermistor (TH21) (Sorrounding temperature 10°C~30°C[50°F~86°F]) Liquid pipe thermistor (TH22) Normal Abnormal Gas pipe thermistor (Refer to the thermistor characteristic graph) Ω... - Page 15 7-2. Setting of address switch Make sure that power source is turning off. Indoor unit control board S W 4 < At delivery (All models)> SW 1 S W 4 < At delivery (P15~54)> 1 2 3 4 5 6 7 8 9 10 S W 4 <...
- Page 16 7-3. Setting of Dip-switch (at delivery) Models Dip-SW S W3 S W5 PEFY-P15 220V 240V NMHU-E 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 1 2 3 4 5 6 7 8 910 1 2 3 1 2 3 S W4...
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Page 17: Disassembly Procedure
DISASSEMBLY PROCEDURE Be careful on removing heavy parts. 8-1. CONTROL BOX OPERATING PROCEDURE PHOTOS Models 15~54 1.Removing the control box cover Fig.1 (1) Remove the fixing screws (two) of the control box (A), and remove the cover. (Fig. 1) *At this stage, the following servicing is possible. 1 Operation and check of the switches (listed below) which are on the control board. - Page 18 Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS · Models 72 Fig.4 1.Removing the control box cover (1) Remove the fixing screws (four) of the control box cover (C), and remove the cover. (Fig. 4) *At this stage, the following servicing is possible.(Fig. 5) 1 Operation and check of the switches (listed below) which are on the control board.
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Page 19: Fan And Fan Motor
Be careful on removing heavy parts. 8-2. FAN and FAN MOTOR OPERATING PROCEDURE PHOTOS Models 15~54 Fig.1 1.Removing the control box. (1) Remove the control box cover and terminal bed cover with procedure 8-1. (2) Remove the fan motor connectors. (3) Remove the fixing screws (two) of the control box and slide the control box to remove.(Fig. - Page 20 Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (4) Slide the motor (A) with motor base (D) in direction of allow Fig.5 1 . (Fig. 5) Arrow 1 Fig.6 Motor (A) · · Models 36 *Motor maintenance procedure is almost 15~30 models procedure.
- Page 21 Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS Models 72 · 96 Control box Fig.7 1.Removing the control box. cover 2 (1) Remove the control box cover1 with procedure 8-1. (2) Remove the fixing screws (four) of the control cover 2, and remove the control cover2.
- Page 22 Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (3) After removing the fixing screws (H)(as shown models Fig.11 36·48·54) of the front fan case(B) and remove the fan. Pull the fan case (B). (4) Remove the fixing screws (K)(three) of the bell mouse (J) attached fan case (L), and remove the bell mouse (J).
- Page 23 Be careful on removing heavy parts. 8-3. LEV,THERMISTOR (Liquid/Gas piping temperature detection) OPERATING PROCEDURE PHOTOS Models 15~54 Fig.1 1.Removing the LEV. (1) Remove the control box cover with procedure 8-1. (2) Remove the fixing screws (four) of the heat exchanger cover (A), and remove the cover (A).(Fig.
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Page 24: Heat Exchanger
Be careful on removing heavy parts. 8-4. HEAT EXCHANGER OPERATING PROCEDURE PHOTOS Models 15~54 Fig.1 1.Removing the heat exchanger. (1) Remove the heat exchanger cover with procedure 8-3-1. Bottom plate (2) Remove the bottom plate which is air outlet side.(fixing screws : ten) (Fig. - Page 25 Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (4) Remove the maintenance cover.(fixing screws : two) (Fig. 4) Fig.4 (5) Remove the heat exchanger.(fixing screws : four) (Fig. 3,5) *Removerd heat exchanger is as shown Fig .6 Maintenance cover Fixing screws Fig.5 Fixing screws...
- Page 26 Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS · Models 72 Fig.7 1.Removing the heat exchanger. (1) Remove the refrigerant piping and drain hose from main Bottom plate unit.(Be care that water is not leaking from drain hose. ) (2) Remove the power supply wire and the transmission line.
- Page 27 Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (7) Remove the fixing screws (three) of the heat exchanger Fig.10 cover, and remove the cover. Remove the fixing screws (four) of the maintenance cover, and remove the cover. (Fig. Fixing screws (7) Remove the heat exchanger.
- Page 28 8-5. CONTROL BOX INSIDE LAYOUT Models 15~54 Trans Condenser (for motor) Indoor unit FAN2 CN3T STR2012 FAN3 contoller board DSA board CN52 CN81 CN60 CN27 CN62 CN82 SW14 SW12 SW11 Transmission terminal bed Power sourse Address board terminal bed Models 72 · 96 Magnet contactor Trans FAN2...
- Page 29 8-6. SENSOR POSITION GPEFY-P15NMHU-E GPEFY-P18· 24NMHU-E Liquid sensor Liquid sensor Gas sensor Gas sensor GPEFY-P27· 30NMHU-E GPEFY-P36 · 48NMHU-E Gas sensor(36) Liquid sensor Liquid sensor Gas sensor(48) Gas sensor GPEFY-P54NMHU-E GPEFY-P72 · 96NMHU-E Liquid sensor Liquid sensor( 72·96) Gas sensor(72) Gas sensor Gas sensor(96)
- Page 30 New publication, effective Aug. 2005 Issued in Aug. 2005 HWE05120 Specifications subject to change without notice...
- Page 31 3400 Lawrenceville Suwanee Road Suwanee, Georgia 30024 ● Toll Free: 800-433-4822 Toll Free Fax: 800-889-9904 ● www.mrslim.com Specifications are subject to change without notice.