Mitsubishi Electric MUY-GE15NA - Manual

Page 2 - TECHNICAL CHANGES

2 MUZ-GE09NAMUZ-GE12NAMUZ-GE15NAMUZ-GE18NAMUY-GE09NAMUY-GE12NAMUY-GE15NAMUY-GE18NA 1. New model 1 TECHNICAL CHANGES

Page 3 - PART NAMES AND FUNCTIONS

3 MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUY-GE09NA MUY-GE12NA MUY-GE15NA Air outlet Drain outlet Piping Drain hose Air inlet (back and side) MUZ-GE18NA MUY-GE18NA Piping Air outlet Drain hose Drain outlet Air inlet (back and side) 2 PART NAMES AND FUNCTIONS

Page 4 - NOTE; SPECIFICATION

4 Outdoor unit model MUZ-GE09NA MUY-GE09NA MUZ-GE12NA MUY-GE12NA Capacity Rated (Minimum~Maximum) Cooling 1 Btu/h 9,000 ( 3,800 ~ 12,200 ) 9,000 ( 3,800 ~ 12,200 ) 12,000 ( 3,800 ~ 13,600 ) 12,000 ( 3,800 ~ 13,600 ) Heating 47 1 Btu/h 10,900 ( 4,500 ~ 14,100 ) — 14,400 ( 5,500 ~ 18,100 ) — Capacity ...

Page 6 - Test condition

6 Test condition ARI Mode Test Indoor air condition (°F) Outdoor air condition (°F) Dry bulb Wet bulb Dry bulb Wet bulb SEER (Cooling) "A-2" Cooling Steady State at rated compressor Speed 80 67 95 (75) "B-2" Cooling Steady State at rated compressor Speed 80 67 82 (65) "B-1" C...

Page 7 - REQUIRED SPACE; OUTLINES AND DIMENSIONS

7 Unit: inch MUZ-GE09NA MUZ-GE12NA MUZ-GE15NAMUY-GE09NA MUY-GE12NA MUY-GE15NA Liquid pipe :1/4 (flared) Gas pipe :3/8 (flared) (GE09/12) 1/2 (flared) (GE15) 6-23/32 2 5-7/8 2-23/32 1-3/4 15-3/4 12 ~ 12-3/4 13-9/16 11 /1 6 1-9/16 7/8 21-5/8 1 1 -1/32 13/32 31-1/2 19-11/16 5-15/16 11-29/32 17/32 29/32...

Page 8 - WIRING DIAGRAM

8 MUZ-GE09NA MUZ-GE12NA 5 WIRING DIAGRAM MUY-GE09NA MUY-GE12NA

Page 11 - REFRIGERANT SYSTEM DIAGRAM

11 Unit: inch MUZ-GE09NA MUY-GE09NA Outdoor heat exchanger Flared connection Defrost thermistor RT61 ( MUZ ) DischargetemperaturethermistorRT62 Flared connection Stop valve (with strainar) Stop valve(with service port) Refrigerant flow in cooling Compressor 4-way valve Refrigerant flow in heating ( ...

Page 12 - MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

12 MUZ-GE18NA MUY-GE18NA Outdoor heat exchanger Flared connection Defrost thermistor RT61 ( MUZ ) Discharge temperature thermistor RT62 Flared connection Stop valve(with strainar) Stop valve(with service port) Capillary tube O.D. 0.142 × I.D. 0.094 × 1-31/32 (ø 3.6×ø2.4×50) Refrigerant flow in cooli...

Page 13 - DATA

13 ADDITIONAL REFRIGERANT CHARGE (R410A: oz.) Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation. Model Outdoor unit precharged Refrigerant piping length (one way): ft. 25 30 40 50 60 65 MUZ-GE09NAMUY-GE09NA 1 lb. 12 oz. 0 1.62 4.86 8.10 11.34 12....

Page 21 - -5. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY

21 7-5. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY Capacity correction factors Input correction factors Input correction factors Capacity correction factors Correction of Cooling capacity The operational frequency of compressor Correction of Cooling total input The operational freque...

Page 22 - -3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR; ACTUATOR CONTROL

22 MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUZ-GE18NAMUY-GE09NA MUY-GE12NA MUY-GE15NA MUY-GE18NA 8-2. R.V. COIL CONTROL (MUZ) Heating . . . . . . . . . . . . . . . . . ON Cooling . . . . . . . . . . . . . . . . . OFF Dry . . . . . . . . . . . . . . . . . . . . OFF NOTE : The 4-way valve reverses for 5 seco...

Page 23 - TROUBLESHOOTING; SERVICE FUNCTIONS

23 9-1. CHANGE IN DEFROST SETTING (MUZ) Changing defrost finish temperature <JS> To change the defrost finish temperature, cut/solder the JS wire of the outdoor inverter P.C. board. (Refer to 10-6-1.) Jumper Defrost fi nish temperature MUZ-GE09/12/15 MUZ-GE18 JS Soldered (Initial setting) 41°F...

Page 29 - B Check of open phase

29 10-5. TROUBLESHOOTING FLOW Are the voltages balanced? Disconnect the connector (CN61) between compressor and the intelligent power module (IPM). Replace the inverter P.C. board. Check the voltage between terminals. Check the compressor. See 10-5. “Check of compressor”. No Yes See 10-5. “Check of ...

Page 31 - G Check of outdoor thermistors; Unit operates COOL mode even if it is set to HEAT mode.

31 Is the resistance of thermistor normal? (Refer to 10-6.1.) Reconnect the connector of thermistor. Turn ON the power supply and press EMERGENCY OPERATION switch. No Replace the thermistor except RT64. When RT64 is abnormal, replace the inverter P.C. board. Does the unit operate for 10 minutes or m...

Page 32 - I Check of outdoor fan motor

32 I Check of outdoor fan motor Is the resistance of outdoor fan motor normal? (Refer to 10-4.) Replace the outdoor fan motor. Replace the inverter P.C. board. No Yes Disconnect CN932 from the inverter P.C. board, and measure the resistance of the outdoor fan motor. MUZ-GE09/12/15NA MUY-GE09/12/15NA...

Page 33 - J Check of power supply

33 J Check of power supply Is there voltage 208/230 VAC between the indoor terminal block S1 and S2? No Yes Replace the indoor electronic control P.C. board. Rectify indoor/outdoor connecting wire. Yes If light up, OK. If fl ash, refer to 10-3. Does The upper lamp of OPERATION INDICATOR lamp on the ...

Page 36 - M How to check miswiring and serial signal error

36 M How to check miswiring and serial signal error Turn OFF inverter-controlled lighting equipment.Turn OFF the power supply and then turn ON again.Press EMERGENCY OPERATION switch. • • • A Is serial signal error indicated 6 minutes later? B Yes Reinstall either the unit or the light away from each...

Page 37 - N Electromagnetic noise enters into TV sets or radios

37 N Electromagnetic noise enters into TV sets or radios Yes Is the unit grounded? No Ground the unit. Yes Is the distance between the antennas and the indoor unit within 9.91 ft., or is the distance between the antennas and the outdoor unit within 9.91 ft.? No Extend the distance between the antenn...

Page 38 - Back side of unit

38 -4 14 32 50 68 86 104 0 10 20 30 40 50 60 70 80 90 100 Temperature(°F) Defrost thermistor(RT61) (MUZ) Ambient temperature thermistor(RT65) Outdoor heat exchanger temperature thermistor(RT68) Temperature(°F) Discharge temperature thermistor(RT62) 32 50 68 86 104 122 140 158 176 194 212 230 248 0 1...

Page 40 - OPERATING PROCEDURE; Removing the cabinet; DISASSEMBLY INSTRUCTIONS

40 11-1. MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUY-GE09NA MUY-GE12NA MUY-GE15NA NOTE : Turn OFF power supply before disassembling. OPERATING PROCEDURE PHOTOS 1. Removing the cabinet (1) Remove the screw fixing the service panel.(2) Pull down the service panel and remove it.(3) Remove the screws fixing th...

Page 41 - Removing the discharge temperature thermistor,

41 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board (1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the lead wire to the reactor and the following connectors: <Inverter P.C. board> CN721 (R.V. coil) (MUZ) CN931, CN932 (Fan motor)CN641 (Defrost th...

Page 42 - Removing outdoor fan motor

42 OPERATING PROCEDURE PHOTOS 5. Removing outdoor fan motor (1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the following connectors: <Inverter P.C. board> CN931, CN932 (Fan motor) (3) Remove the propeller nut. (Photo 7)(4) Remove the propeller. (Photo 7)(5) Remove the screws fi...

Page 44 - Photo 3

44 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board (1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the lead wire to the reactor and the following con- nectors: <Inverter P.C. board>CN721 (R.V.coil) (MUZ) CN931, CN932 (Fan motor)CN641 (Defrost th...

Page 48 - TM

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2009 MITSUBISHI ELECTRIC CO.,LTDDistributed in Jul. 2009. No. OBH 549 5Made in Japan New publication, effective Jul. 2009Specifications subject to change without notice. TM

Mitsubishi Electric MUY-GE15NA - Manual

Table of Contents:

Summary

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