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Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MUZ-FA25VA -
MUZ-FA35VA -
MUZ-FA25VAH -
MUZ-FA35VAH -
NOTE:
This service manual describes technical data of the outdoor units.
•As for indoor units MSZ-FA25VA-
E1
E1
E1
E1
Indication of
model name
MUZ-FA25VA -
E1
MUZ-FA35VA -
E1
MUZ-FA25VAH -
E1
MUZ-FA35VAH -
E1
and MSZ-FA35VA-
, refer to the service manual OB371.
E1
E1
www.ilmalämpöpumput.com
HFC
utilized
R410A
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES ·······························7
5. OUTLINES AND DIMENSIONS ·························8
6. WIRING DIAGRAM ············································9
7. REFRIGERANT SYSTEM DIAGRAM ··············11
8. PERFORMANCE CURVES ······························13
9. ACTUATOR CONTROL····································21
10. SERVICE FUNCTIONS·····································22
11. TROUBLESHOOTING ······································22
12. DISASSEMBLY INSTRUCTIONS·····················39
13. PARTS LIST······················································42
No. OB372
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Related Manuals for Mitsubishi Electric MUZ-FA25VA-E1
Summary of Contents for Mitsubishi Electric MUZ-FA25VA-E1
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Page 1: Table Of Contents
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS No. OB372 utilized SERVICE MANUAL R410A Wireless type Models MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - CONTENTS 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················5 3. -
Page 2: Technical Changes
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy TECHNICAL CHANGES MUZ-A09YV - MUZ- FA25VA - MUZ-A09YVH - MUZ-FA25VAH - 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. - Page 3 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 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.
- 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 Wall Pipe Insulation material thickness For liquid 0.8 mm 6.35 Heat resisting foam plastic 0.8 mm 9.52 For gas Specific gravity 0.045 Thickness 8 mm 0.8 mm...
- Page 5 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 2.Refrigerant piping 1 Specifications Use the refrigerant pipes that meet the following specifications. Outside diameter Wall Pipe Insulation material thickness For liquid 0.8 mm 6.35 Heat resisting foam plastic 0.8 mm 9.52 For gas Specific gravity 0.045 Thickness 8 mm 0.8 mm...
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Page 6: Part Names And Functions
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PART NAMES AND FUNCTIONS MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - OUTDOOR UNIT ACCESSORIES Air inlet (back and side) Piping MUZ-FA25VAH - MUZ-FA25VA - Drain hose MUZ-FA35VAH - MUZ-FA35VA - Drain socket Air outlet Quick clean kit Drain outlet... -
Page 7: Outdoor Unit
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Specifications and rating conditions of main electric parts OUTDOOR UNIT Model MUZ-FA25VA - MUZ-FA25VAH - MUZ-FA35VA - MUZ-FA35VAH - Item (CT) Current transformer ETA19Z59BZ (CT761, CT781) Current transformer ETQ19Z71AY (C63A, C63B, C63C) Smoothing capacitor 620+ 420V Diode module... -
Page 8: Noise Criteria Curves
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy NOISE CRITERIA CURVES MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING High High Med. Med. HEATING HEATING Test conditions, Test conditions, Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:) Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:) Heating : Dry-bulb temperature 7: Wet-bulb temperature... -
Page 9: Outlines And Dimensions
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OUTLINES AND DIMENSIONS MUZ-FA25VA - MUZ-FA35VA - Unit: mm MUZ-FA25VAH - MUZ-FA35VAH - OUTDOOR UNIT REQUIRED SPACE Basically open 100mm or more without any obstruction in front and on both sides of the unit. Drain hole [42 (MUZ-FA25/FA35VA) Drain hole [33 (MUZ-FA25/FA35VAH) Air in... -
Page 10: Wiring Diagram
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy WIRING DIAGRAM MUZ-FA25VA - MODELS WIRING DIAGRAM MUZ-FA35VA - OUTDOOR UNIT www.ilmalämpöpumput.com... - Page 11 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VAH - MODELS WIRING DIAGRAM MUZ-FA35VAH - OUTDOOR UNIT www.ilmalämpöpumput.com...
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Page 12: Refrigerant System Diagram
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy REFRIGERANT SYSTEM DIAGRAM MUZ-FA25VA - Unit:mm MUZ-FA25VAH - OUTDOOR UNIT Refrigerant pipe [9.52 4-way valve (with heat insulator) Muffler Stop valve (with service port) Outdoor Muffler Discharge heat Flared connection exchanger temperatuer thermistor RT62 Ambient... - Page 13 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Piping size O.D : mm Length of connecting pipe : m Model Max. length : m Liquid Indoor unit Outdoor unit MUZ-FA25VA - Gas 0.43 MUZ-FA25VAH - 9.52 6.35 MUZ-FA35VA -...
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Page 14: Performance Curves
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE CURVES MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 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. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. - Page 15 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 20.5 25.6 18.9 23.7 17.4 21.7 15.8 19.7 14.2 17.8 12.6 15.8 13.8 11.0 11.8 Outdoor intake air Wet-bulb temperature (:) Outdoor intake air Wet-bulb temperature (:) NOTE:The above curves are for the heating operation without any frost. MUZ-FA25VA - MUZ-FA25VA - MUZ-FA25VA -...
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Page 16: Heat Operation
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Relative humidity(%) Dry-bulb temperature 1 Both indoor and outdoor unit are under the same temperature/humidity condition. 2 Air flow : High speed 3 Operational frequency : 57Hz(MUZ-FA25VA, MUZ-FA25VAH) 70Hz(MUZ-FA35VA, MUZ-FA35VAH) MUZ-FA35VA - MUZ-FA25VA -... - Page 17 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - : MUZ-FA25VA - MUZ-FA25VAH - CAPACITY:2.5(kW) SHF:0.79 INPUT:595(W) OUTDOOR DB( : ) INDOOR INDOOR WB(:) DB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT...
- Page 18 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - : MUZ-FA25VA - MUZ-FA25VAH - CAPACITY:2.5(kW) SHF:0.79 INPUT:595(W) OUTDOOR DB( : ) INDOOR INDOOR DB (:) WB (:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.45 1.49 0.61 2.25 1.37 0.61...
- Page 19 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - : MUZ-FA35VA - MUZ-FA35VAH - CAPACITY:3.5(kW) SHF:0.76 INPUT:935(W) OUTDOOR DB( : ) INDOOR INDOOR WB(:) DB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT...
- Page 20 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - : MUZ-FA35VA - MUZ-FA35VAH - CAPACITY:3.5(kW) SHF:0.76 INPUT:935(W) DB( : ) OUTDOOR INDOOR INDOOR DB (:) WB (:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.43 1.99 0.58 3.15 1.83 0.58...
- Page 21 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA HEAT operation MSZ-FA25VA - : MUZ-FA25VA - MUZ-FA25VAH - Rated frequency 77Hz CAPACITY:3.2(kW) INPUT:735(W) WB( : ) OUTDOOR INDOOR DB( : ) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 2.02 2.43 2.85 3.26...
- Page 22 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PART NAMES AND FUNCTIONS MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - OUTDOOR UNIT ACCESSORIES Air inlet (back and side) Piping MUZ-FA25VAH - MUZ-FA25VA - Drain hose MUZ-FA35VAH - MUZ-FA35VA - Drain socket Air outlet Quick clean kit Drain outlet...
- Page 23 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Specifications and rating conditions of main electric parts OUTDOOR UNIT Model MUZ-FA25VA - MUZ-FA25VAH - MUZ-FA35VA - MUZ-FA35VAH - Item (CT) Current transformer ETA19Z59BZ (CT761, CT781) Current transformer ETQ19Z71AY (C63A, C63B, C63C) Smoothing capacitor 620+ 420V Diode module...
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Page 24: Med. Heating
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy NOISE CRITERIA CURVES MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING High High Med. Med. HEATING HEATING Test conditions, Test conditions, Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:) Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:) Heating : Dry-bulb temperature 7: Wet-bulb temperature... - Page 25 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OUTLINES AND DIMENSIONS MUZ-FA25VA - MUZ-FA35VA - Unit: mm MUZ-FA25VAH - MUZ-FA35VAH - OUTDOOR UNIT REQUIRED SPACE Basically open 100mm or more without any obstruction in front and on both sides of the unit. Drain hole [42 (MUZ-FA25/FA35VA) Drain hole [33 (MUZ-FA25/FA35VAH) Air in...
- Page 26 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy WIRING DIAGRAM MUZ-FA25VA - MODELS WIRING DIAGRAM MUZ-FA35VA - OUTDOOR UNIT www.ilmalämpöpumput.com...
- Page 27 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VAH - MODELS WIRING DIAGRAM MUZ-FA35VAH - OUTDOOR UNIT www.ilmalämpöpumput.com...
- Page 28 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy REFRIGERANT SYSTEM DIAGRAM MUZ-FA25VA - Unit:mm MUZ-FA25VAH - OUTDOOR UNIT Refrigerant pipe [9.52 4-way valve (with heat insulator) Muffler Stop valve (with service port) Outdoor Muffler Discharge heat Flared connection exchanger temperatuer thermistor RT62 Ambient...
- Page 29 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Piping size O.D : mm Length of connecting pipe : m Model Max. length : m Liquid Indoor unit Outdoor unit MUZ-FA25VA - Gas 0.43 MUZ-FA25VAH - 9.52 6.35 MUZ-FA35VA -...
- Page 30 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE CURVES MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 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. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
- Page 31 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 20.5 25.6 18.9 23.7 17.4 21.7 15.8 19.7 14.2 17.8 12.6 15.8 13.8 11.0 11.8 Outdoor intake air Wet-bulb temperature (:) Outdoor intake air Wet-bulb temperature (:) NOTE:The above curves are for the heating operation without any frost. MUZ-FA25VA - MUZ-FA25VA - MUZ-FA25VA -...
- Page 32 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Relative humidity(%) Dry-bulb temperature 1 Both indoor and outdoor unit are under the same temperature/humidity condition. 2 Air flow : High speed 3 Operational frequency : 57Hz(MUZ-FA25VA, MUZ-FA25VAH) 70Hz(MUZ-FA35VA, MUZ-FA35VAH) MUZ-FA35VA - MUZ-FA25VA -...
- Page 33 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - : MUZ-FA25VA - MUZ-FA25VAH - CAPACITY:2.5(kW) SHF:0.79 INPUT:595(W) OUTDOOR DB( : ) INDOOR INDOOR WB(:) DB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT...
- Page 34 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 57Hz MSZ-FA25VA - : MUZ-FA25VA - MUZ-FA25VAH - CAPACITY:2.5(kW) SHF:0.79 INPUT:595(W) OUTDOOR DB( : ) INDOOR INDOOR DB (:) WB (:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.45 1.49 0.61 2.25 1.37 0.61...
- Page 35 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - : MUZ-FA35VA - MUZ-FA35VAH - CAPACITY:3.5(kW) SHF:0.76 INPUT:935(W) OUTDOOR DB( : ) INDOOR INDOOR WB(:) DB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT...
- Page 36 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 70Hz MSZ-FA35VA - : MUZ-FA35VA - MUZ-FA35VAH - CAPACITY:3.5(kW) SHF:0.76 INPUT:935(W) DB( : ) OUTDOOR INDOOR INDOOR DB (:) WB (:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.43 1.99 0.58 3.15 1.83 0.58...
- Page 37 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PERFORMANCE DATA HEAT operation MSZ-FA25VA - : MUZ-FA25VA - MUZ-FA25VAH - Rated frequency 77Hz CAPACITY:3.2(kW) INPUT:735(W) WB( : ) OUTDOOR INDOOR DB( : ) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 2.02 2.43 2.85 3.26...
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Page 38: Actuator Control
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy ACTUATOR CONTROL MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 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. -
Page 39: Service Functions
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy SERVICE FUNCTIONS MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - CHANGE IN DEFROST SETTING <JS> 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.) Defrost finish temperature Jumper wire... - Page 40 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.
- Page 41 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.
- Page 42 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 3. Outdoor unit failure mode table www.ilmalämpöpumput.com...
- Page 43 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-3. Instruction of troubleshooting w As for "Test run opearation", If blinking of OPERATION INDICATOR lamp cannot refer to indoor unit service be checked, it can be manual OB371. Start checked with failure mode recall function.
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Page 44: Troubleshooting Check Table
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. Flashing Symptom LED indication Abnormal point/ Condition... - Page 45 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-5. Trouble criterion of main parts MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - Part name Check method and criterion Figure Defrost thermistor Measure the resistance with a tester. (Part temperature –10˚C ~ 40˚C) (RT61) Abnormal Normal...
- Page 46 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-6. Troubleshooting flow When POWER lamp flashes 5-time. Outdoor unit does not operate. How to check inverter/ compressor Disconnect the connector (CN61) between compressor and the intelligent power module (IPM). Check the voltage See 11-6.B “Check of open phase”...
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Page 47: Continuous
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Check of compressor Start 11-6.E "Check of Replace the compressor. compressor winding". Is the compressor normal? 11-6.F "Check of Is the compressor compressor operation time". operation time more than Replace the compressor. Does the compressor 10 seconds? operate continuously? - Page 48 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy When POWER lamp flashes 6-time. The thermistors in the outdoor unit are abnormal. Check of outdoor thermistors Disconnect the connectors CN641, CN642 and CN643 from the inverter P.C. board. Defrost thermistor RT61 (Check the characteristics of each thermistor.) Measure the 1 Reconnect the...
- Page 49 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Outdoor fan motor does not operate. Check of outdoor fan motor Rotate the outdoor fan slowly by hand, and measure the Is the resistance Disconnect CN932 voltage of CN931 (Measurement Turn ON the between each terminal of from the inverter of feedback output).
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Page 50: Check Of Lev (Expansion Valve)
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Outdoor unit does not operate at all, or stops immediately due to overcurrent. Check of current-limiting resistor When the current-limiting resistor is open, the rush current limiting relay (X64) may not work properly. Turn ON the power Does the current-limiting resistor supply and press... - Page 51 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Outdoor base gets frozen. Check of defrost heater <MUZ-FA25VAH MUZ-FA35VAH> 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.
- Page 52 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. 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 Check the power 230V AC in the power...
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Page 53: Electromagnetic Noise Enters Into Tv Sets Or Radios
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy Electromagnetic noise enters into TV sets or radios Is the unit earthed? Earth the unit. Is the distance between the Extend the distance between antennas and the indoor the antennas and the indoor unit within 3m, or is the unit, or the antennas and the distance between the... - Page 54 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 11-7. Test point diagram and voltage MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 1. Inverter P.C. board Output to drive Smoothing capacitor Smoothing capacitor Smoothing capacitor Back side of unit compressor (C63B) (C63A) (C63C)
- Page 55 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 2. Power P.C. board Back side of unit Front side of unit Varistor Varistor Varistor (NR63) (NR62) (NR64) 230V AC R.V. coil (CN721) 230V AC Connecting wire with 230V AC inverter P.C.board...
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Page 56: Disassembly Instructions
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy 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. - Page 57 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board Photo 3 and power P.C. board (1) Remove the top panel, cabinet and service panel. Screws of the (Refer to 1.) relay panel (2) Disconnect the power supply and indoor/outdoor Screws of...
- Page 58 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy OPERATING PROCEDURE PHOTOS 5. Removing outdoor fan motor Photo 6 (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.
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Page 59: Parts List
Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy PARTS LIST MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 10 9 www.ilmalämpöpumput.com... - Page 60 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part number that is circled is not shown in the illustration. Symbol Q'ty/unit in Wiring MUZ- MUZ- MUZ- MUZ-...
- Page 61 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - MUZ-FA35VA - MUZ-FA25VAH - MUZ-FA35VAH - 13-2. OUTDOOR UNIT ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring MUZ- MUZ- MUZ- MUZ- Part No.
- Page 62 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy MUZ-FA25VA - MUZ-FA35VA - 13-3. DRAIN SOCKET Outdoor unit {42 drain hole Soft vinyl chloride hose of 25mm inside diameter. Q'ty/unit Symbol in Wiring Parts No. Parts Name Remarks MUZ-FA25VA- MUZ-FA35VA- Diagram E02 838 704 DRAIN SOCKET MUZ-FA25VA -...
- Page 63 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy www.ilmalämpöpumput.com...
- Page 64 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy www.ilmalämpöpumput.com...
- Page 65 Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Jan. 2005. No. OB372 6 New publication, effective Jan. 2005 Made in Japan Specifications subject to change without notice.