OB372--1qxp 05.1.17 15:28 Page 1 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS HFC No. OB372 utilized SERVICE MANUAL R410A Wireless type Models MUZ-FA25VA MUZ-FA35VA MUZ-FA25VAH MUZ-FA35VAH E1 E1 E1 E1 CONTENTS Indication of model name MUZ-FA25VA - E1 MUZ-FA35VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VAH - E1 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················5 3.
OB372--1qxp 05.1.17 15:28 Page 2 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 1 TECHNICAL CHANGES MUZ-A09YV - E1 MUZ-A09YVH - E1 ➔ MUZ- FA25VA - E1 ➔ MUZ-FA25VAH - E1 1.Indication of capacity has been changed.(BTU base➔kW base) 2.Control method between indoor and outdoor unit has been changed. 3.Power supply method has been changed (change to supply from outdoor unit). 4. Terminal block for power supply has been added. 5.Power P.C.board has been changed. 6.Inverter P.C.
OB372--1qxp 05.1.17 15:28 Page 3 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Compressor New Specification Current Specification The incompatible refrigeration oil easily separates from Since refrigerant and refrigeration oil are compatible each, refrigerant and is in the upper layer inside the suction muffler. refrigeration oil goes back to the compressor through the Raising position of the oil back hole enables to back the lower position oil back hole.
OB372--1qxp 05.1.17 15:29 Page 4 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 2.Refrigerant piping 1 Specifications Use the refrigerant pipes that meet the following specifications. Outside diameter Pipe For liquid For gas mm Wall thickness 6.35 0.8 mm 9.52 0.8 mm 12.7 0.8 mm Insulation material Heat resisting foam plastic Specific gravity 0.045 Thickness 8 mm • Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm.
OB372--1qxp 05.1.17 15:29 Page 4 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 2.Refrigerant piping 1 Specifications Use the refrigerant pipes that meet the following specifications. Outside diameter Pipe For liquid For gas mm Wall thickness 6.35 0.8 mm 9.52 0.8 mm 12.7 0.8 mm Insulation material Heat resisting foam plastic Specific gravity 0.045 Thickness 8 mm • Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm.
OB372--1qxp 05.1.17 15:29 Page 5 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 2 PART NAMES AND FUNCTIONS MUZ-FA25VA - E1 MUZ-FA25VAH - E1 OUTDOOR UNIT MUZ-FA35VA - E1 MUZ-FA35VAH - E1 ACCESSORIES Air inlet (back and side) Piping MUZ-FA25VA MUZ-FA35VA - Drain hose Air outlet 1 Drain socket 1 2 Quick clean kit 1 Drain outlet 3 SPECIFICATION Outdoor model Function Electrical Capacity data Power supply Fan motor Compressor Capacity Rated frequency(Min.-Max.
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OB372--1qxp 05.1.17 15:29 Page 7 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 4 NOISE CRITERIA CURVES MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 FAN SPEED FUNCTION SPL(dB(A)) 46 HEATING 46 FAN SPEED FUNCTION LINE High Med.
OB372--1qxp 05.1.17 15:29 Page 8 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 5 OUTLINES AND DIMENSIONS MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 Unit: mm OUTDOOR UNIT REQUIRED SPACE Drain hole [42 (MUZ-FA25/FA35VA) Drain hole [33 (MUZ-FA25/FA35VAH) m 00m or m 1 100 mm or m Bolt pitch for installation 304~325 ore 44 Air in 40 2 holes 10X21 e mm 200 or or m Open two sides of left, right, or rear side. 17.
CIRCUIT BREAKER TO INDDOR UNIT CONNECTING 9 www.ilmalämpöpumput.com REACTOR C N 7 2 6 C N 7 2 7 1 2 3 4 5 CN601 DB65 DB61 TR821 + NAME MF 1 2 3 4 5 1 2 3 4 5 1 2 3 TRANSFORMER FIN TEMPERATURE THERMISTOR AMBIENT TEMPERATURE THERMISTOR INTELLIGENT POWER MODULE RT64 EXPANSION VALVE COIL IPM LEV R.V. COIL X63,X64 RELAY T801 SWITCHING POWER TRANSISTOR TB1,TB2 TERMINAL BLOCK LD-W 1 2 3 4 CN641 LEV CN61 MC WHT REDW BLK V U NOTE:1.
TO INDDOR UNIT CONNECTING 10 www.ilmalämpöpumput.com BLK BLK BLK BLK BLK BLK RED WHITE REACTOR AMBIENT TEMPERATURE THERMISTOR INTELLIGENT POWER MODULE RT65 EXPANSION VALVE COIL IPM LEV R61,R831 CURRENT-DETECTING RESISTOR FIN TEMPERATURE THERMISTOR INTELLIGENT POWER DEVICE RT64 BLK C N 7 2 5 TB800 LD69 LD70 1 2 3 4 5 CN601 DB65 DB61 TR821 + NAME MF 1 2 3 4 5 1 2 3 4 5 1 2 3 TRANSFORMER 21S4 HEATER PROTECTOR R.V.
OB372--1qxp 05.1.17 15:29 Page 11 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 7 REFRIGERANT SYSTEM DIAGRAM MUZ-FA25VA - E1 MUZ-FA25VAH - E1 OUTDOOR UNIT Unit:mm Refrigerant pipe [9.52 (with heat insulator) 4-way valve Muffler Stop valve (with service port) Outdoor heat exchanger Muffler Discharge temperatuer thermistor RT62 Flared connection Ambient temperature thermistor RT65 Compressor Defrost thermistor RT61 Flared connection Capillary tube [3.0✕[2.
OB372--1qxp 05.1.17 15:29 Page 12 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Model Piping size O.D : mm Max. length : m MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 A Gas Liquid 20 9.52 6.35 Length of connecting pipe : m Indoor unit Outdoor unit Gas 0.43 Liquid 0.5 MAX. HEIGHT DIFFERENCE Indoor unit w Max. Height difference 12m Refrigerant Piping Max.
OB372--1qxp 05.1.17 15:29 Page 13 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 8 PERFORMANCE CURVES MUZ-FA25VA - E1 MUZ-FA35VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VAH - E1 The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions. Since operating conditions vary according to the areas where these units are installed.
OB372--1qxp 05.1.17 15:29 Page 14 25.6 18.9 23.7 21.7 15.8 19.7 14.2 17.8 12.6 15.8 11.0 13.8 9.5 11.8 r oo te take r in doo MUZ-FA25VA - E1 MUZ-FA25VAH - E1 Outdoor intake air Wet-bulb temperature (:) MUZ-FA25VA - E1 MUZ-FA25VAH - E1 Correction of Cooling total input MUZ-FA25VA - E1 MUZ-FA25VAH - E1 Correction of Heating total input 2.0 Correction of Heating capacity 2.0 Capacity correction factors Input correction factors 1.0 0.5 0.
OB372--1qxp 05.1.17 15:29 Page 15 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Dry-bulb temperature Relative humidity(%) 20 50 25 60 30 70 1 Both indoor and outdoor unit are under the same temperature/humidity condition.
OB372--1qxp 05.1.17 15:29 Page 16 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - E1 : MUZ-FA25VA - E1 MUZ-FA25VAH - E1 CAPACITY:2.5(kW) INPUT:595(W) 21 Q SHC SHF INPUT 18 2.94 1.79 0.61 476 20 3.06 1.50 0.49 500 18 2.94 1.91 0.65 476 20 3.06 1.62 0.53 500 22 3.19 1.31 0.41 518 18 2.94 2.03 0.69 476 20 3.06 1.75 0.57 500 22 3.19 1.43 0.45 518 18 2.94 2.14 0.73 476 20 3.06 1.87 0.61 500 22 3.19 1.56 0.
OB372--1qxp 05.1.17 15:29 Page 17 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - E1 : MUZ-FA25VA - E1 MUZ-FA25VAH - E1 CAPACITY:2.5(kW) SHF:0.79 INPUT:595(W) OUTDOOR DB(:) 35 40 INDOOR INDOOR DB (:) WB (:) Q SHC SHF INPUT Q SHC SHF INPUT Q 21 18 2.45 1.49 0.61 583 2.25 1.37 0.61 619 2.08 21 20 2.58 1.26 0.49 607 2.40 1.18 0.49 637 2.23 22 18 2.45 1.59 0.65 583 2.25 1.46 0.65 619 2.08 22 20 2.58 1.36 0.
OB372--1qxp 05.1.17 15:29 Page 18 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - E1 : MUZ-FA35VA - E1 MUZ-FA35VAH - E1 CAPACITY:3.5(kW) INPUT:935(W) 21 Q SHC SHF INPUT 18 4.11 2.39 0.58 748 20 4.29 1.97 0.46 785 18 4.11 2.55 0.62 748 20 4.29 2.14 0.50 785 22 4.46 1.70 0.38 813 18 4.11 2.71 0.66 748 20 4.29 2.32 0.54 785 22 4.46 1.87 0.42 813 18 4.11 2.88 0.70 748 20 4.29 2.49 0.58 785 22 4.46 2.05 0.
OB372--1qxp 05.1.17 15:29 Page 19 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - E1 : MUZ-FA35VA - E1 MUZ-FA35VAH - E1 CAPACITY:3.5(kW) INPUT:935(W) 35 Q SHC SHF INPUT 18 3.43 1.99 0.58 916 20 3.61 1.66 0.46 954 18 3.43 2.13 0.62 916 20 3.61 1.80 0.50 954 22 3.82 1.45 0.38 991 18 3.43 2.26 0.66 916 20 3.61 1.95 0.54 954 22 3.82 1.60 0.42 991 18 3.43 2.40 0.70 916 20 3.61 2.09 0.58 954 22 3.82 1.75 0.
OB372--1qxp 05.1.17 15:29 Page 20 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA HEAT operation MSZ-FA25VA - E1 : MUZ-FA25VA - E1 MUZ-FA25VAH - E1 CAPACITY:3.2(kW) INDOOR DB(:) 15 21 26 Rated frequency 77Hz INPUT:735(W) OUTDOOR WB(:) -10 -5 0 5 10 15 20 Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 2.02 478 2.43 573 2.85 647 3.26 698 3.68 742 4.06 764 4.48 779 1.92 515 2.30 610 2.72 676 3.10 728 3.52 764 3.90 786 4.30 816 1.73 551 2.14 647 2.
OB372--1qxp 05.1.17 15:29 Page 5 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 2 PART NAMES AND FUNCTIONS MUZ-FA25VA - E1 MUZ-FA25VAH - E1 OUTDOOR UNIT MUZ-FA35VA - E1 MUZ-FA35VAH - E1 ACCESSORIES Air inlet (back and side) Piping MUZ-FA25VA MUZ-FA35VA - Drain hose Air outlet 1 Drain socket 1 2 Quick clean kit 1 Drain outlet 3 SPECIFICATION Outdoor model Function Electrical Capacity data Power supply Fan motor Compressor Capacity Rated frequency(Min.-Max.
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OB372--1qxp 05.1.17 15:29 Page 7 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 4 NOISE CRITERIA CURVES MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 FAN SPEED FUNCTION SPL(dB(A)) 46 HEATING 46 FAN SPEED FUNCTION LINE High Med.
OB372--1qxp 05.1.17 15:29 Page 8 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 5 OUTLINES AND DIMENSIONS MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 Unit: mm OUTDOOR UNIT REQUIRED SPACE Drain hole [42 (MUZ-FA25/FA35VA) Drain hole [33 (MUZ-FA25/FA35VAH) m 00m or m 1 100 mm or m Bolt pitch for installation 304~325 ore 44 Air in 40 2 holes 10X21 e mm 200 or or m Open two sides of left, right, or rear side. 17.
CIRCUIT BREAKER TO INDDOR UNIT CONNECTING 9 www.ilmalämpöpumput.com REACTOR C N 7 2 6 C N 7 2 7 1 2 3 4 5 CN601 DB65 DB61 TR821 + NAME MF 1 2 3 4 5 1 2 3 4 5 1 2 3 TRANSFORMER FIN TEMPERATURE THERMISTOR AMBIENT TEMPERATURE THERMISTOR INTELLIGENT POWER MODULE RT64 EXPANSION VALVE COIL IPM LEV R.V. COIL X63,X64 RELAY T801 SWITCHING POWER TRANSISTOR TB1,TB2 TERMINAL BLOCK LD-W 1 2 3 4 CN641 LEV CN61 MC WHT REDW BLK V U NOTE:1.
TO INDDOR UNIT CONNECTING 10 www.ilmalämpöpumput.com BLK BLK BLK BLK BLK BLK RED WHITE REACTOR AMBIENT TEMPERATURE THERMISTOR INTELLIGENT POWER MODULE RT65 EXPANSION VALVE COIL IPM LEV R61,R831 CURRENT-DETECTING RESISTOR FIN TEMPERATURE THERMISTOR INTELLIGENT POWER DEVICE RT64 BLK C N 7 2 5 TB800 LD69 LD70 1 2 3 4 5 CN601 DB65 DB61 TR821 + NAME MF 1 2 3 4 5 1 2 3 4 5 1 2 3 TRANSFORMER 21S4 HEATER PROTECTOR R.V.
OB372--1qxp 05.1.17 15:29 Page 11 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 7 REFRIGERANT SYSTEM DIAGRAM MUZ-FA25VA - E1 MUZ-FA25VAH - E1 OUTDOOR UNIT Unit:mm Refrigerant pipe [9.52 (with heat insulator) 4-way valve Muffler Stop valve (with service port) Outdoor heat exchanger Muffler Discharge temperatuer thermistor RT62 Flared connection Ambient temperature thermistor RT65 Compressor Defrost thermistor RT61 Flared connection Capillary tube [3.0✕[2.
OB372--1qxp 05.1.17 15:29 Page 12 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Model Piping size O.D : mm Max. length : m MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 A Gas Liquid 20 9.52 6.35 Length of connecting pipe : m Indoor unit Outdoor unit Gas 0.43 Liquid 0.5 MAX. HEIGHT DIFFERENCE Indoor unit w Max. Height difference 12m Refrigerant Piping Max.
OB372--1qxp 05.1.17 15:29 Page 13 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 8 PERFORMANCE CURVES MUZ-FA25VA - E1 MUZ-FA35VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VAH - E1 The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions. Since operating conditions vary according to the areas where these units are installed.
OB372--1qxp 05.1.17 15:29 Page 14 25.6 18.9 23.7 21.7 15.8 19.7 14.2 17.8 12.6 15.8 11.0 13.8 9.5 11.8 r oo te take r in doo MUZ-FA25VA - E1 MUZ-FA25VAH - E1 Outdoor intake air Wet-bulb temperature (:) MUZ-FA25VA - E1 MUZ-FA25VAH - E1 Correction of Cooling total input MUZ-FA25VA - E1 MUZ-FA25VAH - E1 Correction of Heating total input 2.0 Correction of Heating capacity 2.0 Capacity correction factors Input correction factors 1.0 0.5 0.
OB372--1qxp 05.1.17 15:29 Page 15 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Dry-bulb temperature Relative humidity(%) 20 50 25 60 30 70 1 Both indoor and outdoor unit are under the same temperature/humidity condition.
OB372--1qxp 05.1.17 15:29 Page 16 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - E1 : MUZ-FA25VA - E1 MUZ-FA25VAH - E1 CAPACITY:2.5(kW) INPUT:595(W) 21 Q SHC SHF INPUT 18 2.94 1.79 0.61 476 20 3.06 1.50 0.49 500 18 2.94 1.91 0.65 476 20 3.06 1.62 0.53 500 22 3.19 1.31 0.41 518 18 2.94 2.03 0.69 476 20 3.06 1.75 0.57 500 22 3.19 1.43 0.45 518 18 2.94 2.14 0.73 476 20 3.06 1.87 0.61 500 22 3.19 1.56 0.
OB372--1qxp 05.1.17 15:29 Page 17 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - E1 : MUZ-FA25VA - E1 MUZ-FA25VAH - E1 CAPACITY:2.5(kW) SHF:0.79 INPUT:595(W) OUTDOOR DB(:) 35 40 INDOOR INDOOR DB (:) WB (:) Q SHC SHF INPUT Q SHC SHF INPUT Q 21 18 2.45 1.49 0.61 583 2.25 1.37 0.61 619 2.08 21 20 2.58 1.26 0.49 607 2.40 1.18 0.49 637 2.23 22 18 2.45 1.59 0.65 583 2.25 1.46 0.65 619 2.08 22 20 2.58 1.36 0.
OB372--1qxp 05.1.17 15:29 Page 18 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - E1 : MUZ-FA35VA - E1 MUZ-FA35VAH - E1 CAPACITY:3.5(kW) INPUT:935(W) 21 Q SHC SHF INPUT 18 4.11 2.39 0.58 748 20 4.29 1.97 0.46 785 18 4.11 2.55 0.62 748 20 4.29 2.14 0.50 785 22 4.46 1.70 0.38 813 18 4.11 2.71 0.66 748 20 4.29 2.32 0.54 785 22 4.46 1.87 0.42 813 18 4.11 2.88 0.70 748 20 4.29 2.49 0.58 785 22 4.46 2.05 0.
OB372--1qxp 05.1.17 15:29 Page 19 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - E1 : MUZ-FA35VA - E1 MUZ-FA35VAH - E1 CAPACITY:3.5(kW) INPUT:935(W) 35 Q SHC SHF INPUT 18 3.43 1.99 0.58 916 20 3.61 1.66 0.46 954 18 3.43 2.13 0.62 916 20 3.61 1.80 0.50 954 22 3.82 1.45 0.38 991 18 3.43 2.26 0.66 916 20 3.61 1.95 0.54 954 22 3.82 1.60 0.42 991 18 3.43 2.40 0.70 916 20 3.61 2.09 0.58 954 22 3.82 1.75 0.
OB372--1qxp 05.1.17 15:29 Page 20 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA HEAT operation MSZ-FA25VA - E1 : MUZ-FA25VA - E1 MUZ-FA25VAH - E1 CAPACITY:3.2(kW) INDOOR DB(:) 15 21 26 Rated frequency 77Hz INPUT:735(W) OUTDOOR WB(:) -10 -5 0 5 10 15 20 Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 2.02 478 2.43 573 2.85 647 3.26 698 3.68 742 4.06 764 4.48 779 1.92 515 2.30 610 2.72 676 3.10 728 3.52 764 3.90 786 4.30 816 1.73 551 2.14 647 2.
OB372--1qxp 05.1.17 15:29 Page 21 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 9 ACTUATOR CONTROL MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 9-1. Outdoor fan motor control The fan motor turns ON/OFF, interlocking with the compressor. [ON] The fan motor turns ON 5 seconds before the compressor starts up. [OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running.
OB372--1qxp 05.1.17 15:29 Page 22 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 10 SERVICE FUNCTIONS MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 CHANGE IN DEFROST SETTING When the JS wire of the outdoor Inverter P.C. board is cut/ soldered, the defrost finish temperature is changed. (Refer to 11-7.1.
OB372--1qxp 05.1.17 15:29 Page 23 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-2. Failure mode recall function Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (11-4.) disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which doesn't recur. 1.
OB372--1qxp 05.1.17 15:29 Page 24 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 2. Flow chart of the detailed outdoor unit failure mode recall function Operational procedure There is a possibility that the outdoor unit is abnormal. Confirm the presence of abnormality according to the following procedures. Confirm that the remote controller is in the failure mode recall function. W1. Regardless of normal or abnormal, 2 short beeps are emitted as the signal is received.
Abnormal point (Failure mode) Compressor synchronous abnormality ( Compressor start-up failure protection) Discharge temperature thermistor overheat protection Overcurrent protection Ambient temperature thermistor P.C. board temperature thermistor Discharge temperature thermistor Defrost thermistor Fin temperature thermistor Outdoor power system Details of abnormal point 25 www.ilmalämpöpumput.com Outdoor fan protection Outdoor fan protection 8-time flash 2.
OB372--1qxp 05.1.17 15:29 Page 26 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-3. Instruction of troubleshooting If blinking of OPERATION w As for "Test run opearation", INDICATOR lamp cannot refer to indoor unit service be checked, it can be manual OB371. checked with failure mode recall function. Start Indoor unit operates. Outdoor unit doesn't operate. Indoor unit doesn't receive the signal from remote controller. Indoor unit operates.
OB372--1qxp 05.1.17 15:29 Page 27 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Inverter P.C. board (Parts side) 11-4. Troubleshooting check table NOTE 1. The location of LED is illustrated at the right figure. Refer to 11-7.1. 2. LED lights up during normal operation. No. Symptom 1 Outdoor unit does not operate LED indication Abnormal point/ Condition 1-time flash every Outdoor power 2.
OB372--1qxp 05.1.17 15:29 Page 28 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-5. Trouble criterion of main parts MUZ-FA35VA - E1 MUZ-FA35VAH - E1 Part name Discharge temperature thermistor(RT62) Fin temperature thermistor(RT64) Measure the resistance with a tester. (Part temperature –10˚C ~ 40˚C) Normal 5 k" ~ 55 k" Abnormal Open or short-circuit Measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up.
OB372--1qxp 05.1.17 15:29 Page 29 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-6. Troubleshooting flow When POWER lamp flashes 5-time. Outdoor unit does not operate. A How to check inverter/ compressor Disconnect the connector (CN61) between compressor and the intelligent power module (IPM). Check the voltage between terminals. Are the voltages balanced? See 11-6.B “Check of open phase” . No Check the resistance of the intelligent power module. See 11-6.
OB372--1qxp 05.1.17 15:29 Page 30 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy D Check of compressor Start 11-6.E "Check of compressor winding". Is the compressor normal? No Replace the compressor. Yes 11-6.F "Check of compressor operation time". Does the compressor operate continuously? Is the compressor operation time more than 10 seconds? No Yes No Replace the compressor. Yes Ok Check the refrigerant circuit.
OB372 --2qxp 05.1.17 15:30 Page 31 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy When POWER lamp flashes 6-time. The thermistors in the outdoor unit are abnormal. G Check of outdoor thermistors Defrost thermistor RT61 Disconnect the connectors CN641, CN642 and CN643 from the inverter P.C. board. (Check the characteristics of each thermistor.) Measure the resistance between CN641 1 and 2. 1 Reconnect the connectors CN641, CN642 and CN643.
OB372 --2qxp 05.1.17 15:30 Page 32 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Outdoor fan motor does not operate. I Check of outdoor fan motor Is the resistance between each terminal of outdoor fan motor Yes Disconnect CN932 from the inverter P.C. board. Rotate the outdoor fan slowly by hand, and measure the voltage of CN931 (Measurement of feedback output). Between 1(+) and 5(-) Between 2(+) and 5(-) Between 3(+) and 5(-) Turn ON the power supply. No Inverter P.C.
OB372 --2qxp 05.1.17 15:30 Page 33 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Outdoor unit does not operate at all, or stops immediately due to overcurrent. K Check of current-limiting resistor When the current-limiting resistor is open, the rush current limiting relay (X64) may not work properly. Does the current-limiting resistor (R64A or R64B) on the power P.C.
OB372 --2qxp 05.1.17 15:30 Page 34 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Outdoor base gets frozen. M Check of defrost heater Check the following points before checking electric continuity. 1) Does the resistance of ambient temperature thermistor have the characteristics? Refer to 11-7.1. 2) Is the resistance of defrost heater normal? Refer to 11-5.
OB372 --2qxp 05.1.17 15:30 Page 35 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy When POWER lamp flashes ON and OFF in every 0.5-second. Outdoor unit doesn’t operate. O How to check mis-wiring and serial signal error (when outdoor unit does not work) Turn OFF the power supply. Is there rated voltage of 230V AC in the power supply? No Check the power supply. Yes Turn ON the power supply. Is there 230V AC between outdoor terminal block S1 and S2? No Check the wiring.
OB372 --2qxp 05.1.17 15:30 Page 36 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy P Electromagnetic noise enters into TV sets or radios No Is the unit earthed? Earth the unit. Yes Is the distance between the antennas and the indoor unit within 3m, or is the distance between the antennas and the outdoor unit within 3m? Yes Extend the distance between the antennas and the indoor unit, or the antennas and the outdoor unit.
OB372 --2qxp 05.1.17 15:30 Page 37 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-7. Test point diagram and voltage MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 1. Inverter P.C.
OB372 --2qxp 05.1.17 15:30 Page 38 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VA - E1 MUZ-FA35VAH - E1 2. Power P.C. board Back side of unit Varistor (NR63) Varistor (NR62) Varistor (NR64) Front side of unit 230V AC R.V. coil (CN721) 230V AC Connecting wire with inverter P.C.board (CN726) Refer to 11-6.M 230V AC Heater connector (CN722) Refer to 11-6.M } MUZ-FA25VAH MUZ-FA35VAH 38 www.ilmalämpöpumput.
OB372 --2qxp 05.1.17 15:30 Page 39 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 12 DISASSEMBLY INSTRUCTIONS <"Terminal with locking mechanism" Detaching points> The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching.
OB372 --2qxp 05.1.17 15:30 Page 40 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board and power P.C. board (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Disconnect the power supply and indoor/outdoor connecting wire and remove the back panel. (Refer to 1.) (3) Disconnect the ground wires(See Photo 3.), the lead wire to the reactor and the following connectors;
OB372 --2qxp 05.1.17 15:30 Page 41 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OPERATING PROCEDURE PHOTOS 5. Removing outdoor fan motor (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Disconnect the power supply and indoor/outdoor connecting wire and remove the back panel. (Refer to 1.) (3) Disconnect the connectors for outdoor fan motor. (4) Remove the propeller nut. (5) Remove the propeller. (6) Remove the screws fixing the fan motor. (See Photo 7.
OB372 --2qxp 05.1.17 15:30 Page 42 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 13 PARTS LIST MUZ-FA25VA - E1 MUZ-FA35VA - E1 E1 MUZ-FA25VAH MUZ-FA35VAH - E1 13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 20 16 19 18 17 15 14 23 21 22 24 13 1 11 12 3 4 5 6 2 42 www.ilmalämpöpumput.
OB372 --2qxp 05.1.17 15:30 Page 43 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - E1 MUZ-FA35VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VAH - E1 13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part number that is circled is not shown in the illustration. No. Part No.
OB372 --2qxp 05.1.17 15:30 Page 44 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - E1 MUZ-FA35VA - E1 MUZ-FA25VAH - E1 MUZ-FA35VAH - E1 13-2. OUTDOOR UNIT ELECTRICAL PARTS 9 10 8 7 6 2 1 5 4 3 Part numbers that are circled are not shown in the illustration. No. Part No.
OB372 --2qxp 05.1.17 15:30 Page 45 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - E1 MUZ-FA35VA - E1 13-3. DRAIN SOCKET Outdoor unit {42 drain hole 1 Soft vinyl chloride hose of 25mm inside diameter. No. Parts No. Parts Name Q'ty/unit Symbol in Wiring MUZ-FA25VA- E1 MUZ-FA35VADiagram 1 E02 838 704 DRAIN SOCKET 1 E1 Remarks 1 MUZ-FA25VA - E1 MUZ-FA35VA - E1 E1 MUZ-FA25VAH MUZ-FA35VAH - E1 13-4.
OB372 --2qxp 05.1.17 15:30 Page 46 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 46 www.ilmalämpöpumput.
OB372 --2qxp 05.1.17 15:30 Page 47 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 47 www.ilmalämpöpumput.
OB372 --2qxp 05.1.17 15:30 Page 48 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Jan. 2005. No. OB372 6 Made in Japan New publication, effective Jan. 2005 Specifications subject to change without notice. www.ilmalämpöpumput.
