Mitsubishi Electric MXZ-3E54VA-E1 Service Manual

Outdoor unit

Hide thumbs Also See for MXZ-3E54VA-E1:

Service manual (64 pages)

Service manual (64 pages)

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

Table of Contents

Quick Links

OUTDOOR UNIT

SERVICE MANUAL

Models

MXZ-3E54VA

MXZ-3E68VA

MXZ-4E72VA

MXZ-4E83VA

MXZ-5E102VA

MXZ-2E53VAHZ

MXZ-4E83VAHZ

MXZ-4E83VA

MXZ-5E102VA

MXZ-2E53VAHZ

NOTE:

RoHS compliant products have <G> mark

on the spec name plate.

ET1

ER1

ET1

ER1

ET1

ER1

ET1

ET2

ET1

ER1

ER2

Revision D:

• MXZ-4E83VA-

ET3

ER2

have been added.

OBH723 REVISED EDITION-C is void.

HFC

utilized

R410A

Indoor unit service manual

MSZ-EF•VE Series (OBH589)

MSZ-SF•VA Series (OBH555)

MSZ-SF•VE Series (OBH600)

MSZ-FD•VA Series (OBH488)

MSZ-FH•VE Series (OBH623)

ET3

ER1

ER2

MSZ-GA•VA Series (OB378)

MSZ-GE•VA Series (OBH515)

ET2

ET3

ER1

ER2

MSZ-GF•VE Series (OBH634)

MFZ-KA•VA Series (OB409)

MFZ-KJ•VE Series (OBH666)

MLZ-KA•VA Series (OBH483)

SLZ-KA•VA Series (OC320)

SEZ-KD•VA Series (HWE07110)

PLA-RP•BA Series (OCH412)

PCA-RP•KA Series (OCH454)

PEAD-RP•JA Series (HWE08130)

CONTENTS

1. TECHNICAL CHANGES ···································

2. PART NAMES AND FUNCTIONS ····················· 4

3. SPECIFICATION ················································

4. NOISE CRITERIA CURVES ····························

5. OUTLINES AND DIMENSIONS ······················ 14

6. WIRING DIAGRAM ··········································

7. REFRIGERANT SYSTEM DIAGRAM ············· 44

8. PERFORMANCE CURVES ·····························

9. ACTUATOR CONTROL ···································

10. SERVICE FUNCTIONS ····································

11. TROUBLESHOOTING ·····································

12. DISASSEMBLY INSTRUCTIONS ·················· 108

INDOOR UNITS COMBINATION SHEETS

PARTS CATALOG (OBB723)

, MXZ-5E102VA-

ET3

ER2

and MXZ-4E83VAHZ-

No. OBH723

REVISED EDITION-D

ER2

Table of Contents

Summary of Contents for Mitsubishi Electric MXZ-3E54VA-E1

Page 1: Outdoor Unit
Revision D: • MXZ-4E83VA- , MXZ-5E102VA- and MXZ-4E83VAHZ- have been added. OBH723 REVISED EDITION-C is void. OUTDOOR UNIT No. OBH723 REVISED EDITION-D utilized SERVICE MANUAL R410A Models MXZ-3E54VA Indoor unit service manual MXZ-3E68VA MSZ-EF•VE Series (OBH589) MSZ-SF•VA Series (OBH555) MXZ-4E72VA MSZ-SF•VE Series (OBH600) MSZ-FD•VA Series (OBH488) MXZ-4E83VA...
Page 2 Use the specif ed refrigerant only Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.
Page 3: Technical Changes
TECHNICAL CHANGES MXZ-4E83VA - MXZ-5E102VA - 1. New model MXZ-2E53VAHZ - 1. New model MXZ-4E83VAHZ - 1. New model MXZ-3E54VA - MXZ-3E68VA - MXZ-4E72VA - 1. New model MXZ-4E83VA - MXZ-4E83VA - 1. Fan motor has been changed. 2. Outdoor control P.C. board has been changed. MXZ-5E102VA - MXZ-5E102VA - 1.
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA Air inlet (Back and side) Air outlet Drain outlet MXZ-4E83VAHZ MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ Air inlet Air inlet (Back and side) (Back and side) Air outlet Air outlet Drain outlet Drain outlet ACCESSORIES MXZ-3E54VA MXZ-4E83VA Model MXZ-3E68VA...
Page 5: Specification
SPECIFICATION Outdoor model MXZ-3E54VA Single phase Outdoor unit power supply 230 V, 50 Hz Indoor units number 2 to 3 Piping total length Max. 50 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Page 6 Outdoor model MXZ-3E68VA Single phase Outdoor unit power supply 230 V, 50 Hz Indoor units number 2 to 3 Piping total length Max. 60 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Page 7 Outdoor model MXZ-4E72VA Single phase Outdoor unit power supply 230 V, 50 Hz Indoor units number 2 to 4 Piping total length Max. 60 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Page 8 Outdoor model MXZ-4E83VA Single phase Outdoor unit power supply 230 V, 50 Hz Indoor units number 2 to 4 Piping total length Max. 70 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Page 9 Outdoor model MXZ-5E102VA Single phase Outdoor unit power supply 230 V, 50 Hz Indoor units number 2 to 5 Piping total length Max. 80 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Page 10 Outdoor model MXZ-2E53VAHZ Single phase Outdoor unit power supply 230 V, 50 Hz Indoor units number Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Page 11 Outdoor model MXZ-4E83VAHZ Single phase Outdoor unit power supply 230 V, 50 Hz Indoor units number 2 to 4 Piping total length Max. 70 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Page 12 NOISE CRITERIA CURVES MXZ-3E54VA MXZ-3E68VA FAN SPEED FUNCTION SPL(dB LINE FAN SPEED FUNCTION SPL(dB LINE High Cooling High Cooling High Heating High Heating NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF NC-20 HEARING FOR NC-20 HEARING FOR...
Page 13 MXZ-5E102VA MXZ-2E53VAHZ FAN SPEED FUNCTION SPL(dB LINE FAN SPEED FUNCTION SPL(dB LINE High Cooling High Cooling High Heating High Heating NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR NC-20 NC-20 HEARING FOR CONTINUOUS CONTINUOUS...
Page 14: Outlines And Dimensions
OUTLINES AND DIMENSIONS MXZ-3E54VA MXZ-3E68VA Unit: mm 1.Installation space Note : Leave front and both sides 100 or more free of obstruction. 2.Service space Note : Leave front and overhead free of obstruction. 100 or more 350 or more 100 or more Service space 350 or more 350 or more...
Page 15 MXZ-4E72VA Unit: mm 1.Installation space Note : Leave front and both sides 100 or more free of obstruction. 2.Service space Note : Leave front and overhead free of obstruction. 100 or more 350 or more 100 or more Service space 350 or more 350 or more Note : Leave rear, overhead and...
Page 16 MXZ-4E83VA Unit: mm Air in Air in Air out Air in OBH723D...
Page 17 MXZ-5E102VA Unit: mm Air in Air in Air out Air in OBH723D...
Page 18 MXZ-2E53VAHZ Unit: mm OBH723D...
Page 19 MXZ-4E83VAHZ Unit: mm OBH723D...
Page 20: Wiring Diagram
WIRING DIAGRAM MXZ-3E54VA - MXZ-3E54VA - MXZ-3E54VA - MXZ-3E68VA - MXZ-3E68VA - MXZ-3E68VA - OBH723D...
Page 21 MXZ-4E72VA - MXZ-4E72VA - MXZ-4E72VA - OBH723D...
Page 22 MXZ-4E83VA - OBH723D...
Page 23 MXZ-4E83VA - OBH723D...
Page 24 MXZ-4E83VA - OBH723D...
Page 25 MXZ-4E83VA - OBH723D...
Page 26 MXZ-4E83VA - OBH723D...
Page 27 MXZ-4E83VA - OBH723D...
Page 28 MXZ-4E83VA - OBH723D...
Page 29 MXZ-4E83VA - OBH723D...
Page 30 MXZ-5E102VA - OBH723D...
Page 31 MXZ-5E102VA - OBH723D...
Page 32 MXZ-5E102VA - OBH723D...
Page 33 MXZ-5E102VA - OBH723D...
Page 34 MXZ-5E102VA - OBH723D...
Page 35 MXZ-5E102VA - OBH723D...
Page 36 MXZ-5E102VA - OBH723D...
Page 37 MXZ-5E102VA - OBH723D...
Page 38 MXZ-2E53VAHZ - OBH723D...
Page 39 MXZ-2E53VAHZ - OBH723D...
Page 40 MXZ-4E83VAHZ - OBH723D...
Page 41 MXZ-4E83VAHZ - OBH723D...
Page 42 MXZ-4E83VAHZ - OBH723D...
Page 43 MXZ-4E83VAHZ - OBH723D...
Page 44: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MXZ-3E54VA UNIT: mm Compressor High-pressure switch Discharge R.V. coil temperature Refrigerant flow in cooling thermistor RT62 Oil separator Capillary tube Refrigerant flow in heating 4-way valve Indoor unit Stop valve with service port Indoor unit Muffler Indoor unit Outdoor heat exchanger temperature...
Page 45: Max Refrigerant Piping Length
MXZ-3E68VA UNIT: mm Compressor High-pressure switch Discharge R.V. coil temperature Refrigerant flow in cooling thermistor RT62 Capillary tube Oil separator Refrigerant flow in heating 4-way valve Indoor unit Stop valve with service port Indoor unit Muffler Indoor unit Outdoor heat exchanger temperature FAN-OUT...
Page 46 MXZ-4E72VA UNIT: mm Compressor High-pressure switch Discharge R.V. coil temperature Refrigerant flow in cooling thermistor RT62 Refrigerant flow in heating Oil separator Capillary tube Indoor unit 4-way valve Stop valve with service port Indoor unit Indoor unit Muffler Indoor unit Outdoor heat exchanger temperature...
Page 47 UNIT: mm MXZ-4E83VA R.V.coil Refrigerant flow in heating Refrigerant flow in cooling Accumulator Compressor High pressure switch Discharge Muffler temperature thermistor RT62 Union Header(Gas) Stop valve Ø12.7 4-way valve Charge pipe Indoor unit A (with service port) Ø9.52 Indoor unit B Header (Evaporator) Ø9.52 muffler...
Page 48 UNIT: mm MXZ-5E102VA R.V.coil Refrigerant flow in heating Refrigerant flow in cooling Accumulator Compressor High pressure switch Discharge Muffler temperature thermistor RT62 Union Header(Gas) Stop valve Ø12.7 4-way valve Charge pipe Indoor unit A (with service port) Ø9.52 Indoor unit B Header (Evaporator) Ø9.52 muffler...
Page 49 UNIT: mm MXZ-2E53VAHZ R.V.coil Refrigerant flow in heating Refrigerant flow in cooling Accumulator Compressor High pressure switch Discharge Muffler temperature thermistor RT62 Union Header(Gas) Charge pipe Stop valve 4-way valve (with service port) Ø9.52 Indoor unit A Header (Evaporator) muffler Ø9.52 Indoor unit B Outdoor...
Page 50: Cooling
UNIT: mm MXZ-4E83VAHZ Accumulator Compressor R.V.coil Discharge Refrigerant flow in heating temperature Refrigerant flow in cooling Oil separator thermistor RT62 High pressure switch Union Header(Gas) Ø12.7 Charge pipe Indoor unit A 4-way valve Ø9.52 Indoor unit B Stop valve Header(Evaporator) Ø9.52 (with service port) Indoor unit C...
Page 51: Pumping Down
PUMPING DOWN When relocating or disposing of the air conditioner, pump down the system following the procedure below so that no refrigerant is released into the atmosphere. 1) Turn off the breaker. 2) Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit. 3) Fully close the stop valve on the liquid pipe side of the outdoor unit.
Page 52: Performance Curves
PERFORMANCE CURVES MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ MXZ-4E83VAHZ The standard 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 pro- vided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
Page 53: Heating
8-1. CAPACITY AND THE INPUT CURVES MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA Cooling capacity 3.8 7.3 7.8 8.5 9.7 8.7 11.9 12.4 10.8 11.3 10.1 45 46 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 3.8 7.3 7.8 8.5 11.9 12.4 10.8...
Page 54 MXZ-4E83VA MXZ-5E102VA Cooling capacity 3.8 6.8 4.8 5.5 8.0 10.2 11.6 8.0 10.6 4546 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 4.8 5.5 8.0 10.2 11.6 8.0 10.6 4546 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 18.3...
Page 55 MXZ-2E53VAHZ Cooling capacity 4.8 5.5 8.0 10.2 3.8 6.8 11.6 10.6 45 46 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 4.8 5.5 8.0 10.2 11.6 10.6 45 46 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 18.3...
Page 56 MXZ-4E83VAHZ Cooling capacity 3.8 6.8 4.8 5.5 8.0 10.2 11.6 8.0 10.6 4546 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 8.0 10.2 11.6 10.6 4546 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 18.3 19.7 22.0...
Page 57 8-2. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY (single operation) MXZ-3E54VA 15-class unit <HEAT>Capacity <HEAT>Total input <COOL>Capacity <COOL>Total input Frequency Frequency Frequency Frequency 18-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency...
Page 58 MXZ-3E54VA 25-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 42-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 59 MXZ-3E68VA 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 18-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 60 MXZ-3E68VA 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 42-class unit <HEAT>Capacity <HEAT>Total input <COOL>Capacity <COOL>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 60-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 61 MXZ-4E72VA 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 18-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 62 MXZ-4E72VA 35-class unit <HEAT>Capacity <HEAT>Total input <COOL>Capacity <COOL>Total input Frequency Frequency Frequency Frequency 42-class unit <HEAT>Capacity <HEAT>Total input <COOL>Capacity <COOL>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 60-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 63 MXZ-4E83VA 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 18-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 64 MXZ-4E83VA 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 42-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 60-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 65 MXZ-5E102VA 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 18-class unit <COOL>Capacity <HEAT>Capacity <HEAT>Total input <COOL>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 66 MXZ-5E102VA 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 42-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 60-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 67 MXZ-2E53VAHZ 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 18-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 68 MXZ-2E53VAHZ 35-class unit <HEAT>Capacity <HEAT>Total input <COOL>Capacity <COOL>Total input Frequency Frequency Frequency Frequency 42-class unit <HEAT>Capacity <HEAT>Total input <COOL>Capacity <COOL>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency OBH723D...
Page 69 MXZ-4E83VAHZ 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 18-class unit <COOL>Capacity <HEAT>Capacity <HEAT>Total input <COOL>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <HEAT>Capacity <HEAT>Total input <COOL>Total input...
Page 70 MXZ-4E83VAHZ 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 42-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 60-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
Page 71 8-3. HOW TO OPERATE FIXED-FREQUENCY OPERATION <Test run operation> 1. Press EMERGENCY OPERATION switch to start COOL or HEAT mode (COOL: Press once, HEAT: Press twice). 2. Test run operation starts and continues to operate for 30 minutes. 3. Compressor operates at rated frequency. 4.
Page 72 MXZ-3E54VA 25-class unit 35-class unit (MPa[Gauge]) (MPa[Gauge]) 40Hz 40Hz 40Hz 40Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 42-class unit 50-class unit (MPa[Gauge]) (MPa[Gauge])
Page 73 MXZ-3E68VA MXZ-4E72VA 25-class unit 35-class unit (MPa[Gauge]) (MPa[Gauge]) 30Hz 30Hz 30Hz 30Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 42-class unit 50-class unit (MPa[Gauge])
Page 74 MXZ-4E83VA 20-class unit 22-class unit (MPa[Gauge]) (MPa[Gauge]) 24Hz 24Hz 24Hz 24Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 25-class unit 35-class unit (MPa[Gauge]) (MPa[Gauge])
Page 75 MXZ-5E102VA 15-class unit 18-class unit (MPa[Gauge]) (MPa[Gauge]) 24Hz 24Hz 24Hz 24Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 20-class unit 22-class unit (MPa[Gauge]) (MPa[Gauge])
Page 76 MXZ-5E102VA 71-class unit 60-class unit (MPa[Gauge]) (MPa[Gauge]) 24Hz 24Hz 24Hz 24Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) MXZ-2E53VAHZ 15-class unit 18-class unit (MPa[Gauge])
Page 77 MXZ-2E53VAHZ 50-class unit 42-class unit (MPa[Gauge]) (MPa[Gauge]) 24Hz 24Hz 24Hz 24Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) MXZ-4E83VAHZ 18-class unit 15-class unit (MPa[Gauge])
Page 78 MXZ-4E83VAHZ 42-class unit 50-class unit (MPa[Gauge]) (MPa[Gauge]) 18Hz 18Hz 18Hz 18Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 60-class unit 71-class unit (MPa[Gauge]) (MPa[Gauge])
Page 79 (2) HEAT operation Condition: Indoor Outdoor Dry bulb temperature (°C) 20.0 20.0 Wet bulb temperature (°C) 14.5 14.5 Operation: TEST RUN OPERATION (Refer to 8-3.) MXZ-3E54VA 18-class unit 20-class unit 15-class unit 22-class unit 48Hz 48Hz 48Hz 48Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( )
Page 80 MXZ-3E68VA MXZ-4E72VA MXZ-4E83VA 60-class unit 18-class unit 15-class unit 32Hz 36Hz 32Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 20-class unit 22-class unit 25-class unit 35-class unit 32Hz 32Hz 32Hz 32Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( )
Page 81 MXZ-5E102VA MXZ-2E53VAHZ 60-class unit 71-class unit 18-class unit 15-class unit 32Hz 32Hz 32Hz 32Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 20-class unit 22-class unit 25-class unit 35-class unit 32Hz 32Hz 32Hz 32Hz Ambient temperature ( )
Page 82: Actuator Control
ACTUATOR CONTROL MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ MXZ-4E83VAHZ Relation between main sensor and actuator Actuator 2-way Sensor Purpose Compres- Outdoor 4-way Defrost solenoid fan motor valve heater 2 valve 1 Discharge temperature Protection thermistor Cooling: Coil frost prevention Indoor coil temperature thermistor Heating: High pressure protection Defrost thermistor...
Page 83: Service Functions
SERVICE FUNCTIONS MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ MXZ-4E83VAHZ 10-1. PRE-HEAT CONTROL If moisture gets into the refrigerant cycle, or when refrigerant is liquefied and collected in the compressor, it may interfere the startup of the compressor. To improve startup condition, the compressor is energized even while it is not operating. This is to generate heat at the winding.
Page 84 10-4. AUTO LINE CORRECTING Outdoor unit has an auto line correcting function which automatically detects and corrects improper wiring or piping. Improper wiring or piping can be automatically detected by pressing the piping/wiring correction switch (SW871). When improper wiring or piping is detected, wiring lines are corrected. This will be completed in about 10 to 20 minutes.
Page 85 10-5. CHANGING THE AMPERE LIMIT (MXZ-2E53VAHZ MXZ-4E83VAHZ) With this function, the amount of current that flows in the outdoor unit can be changed. NOTE: Use this function only when the amount of current exceeds the allowed value. [How to change the ampere limit] (1) Be sure to turn off the main power for the air conditioner before making the setting.
Page 86: Troubleshooting
TROUBLESHOOTING MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ MXZ-4E83VAHZ 11-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring. 2. Take care of the following during servicing 1) Before servicing the air conditioner, be sure to turn OFF the unit f rst with the remote controller, and after conf rming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug.
Page 87 2. Flow chart of the detailed outdoor unit failure mode recall function Operational procedure The outdoor unit might be abnormal. Check if outdoor unit is abnormal according to the following procedures. 1 Regardless of normal or abnormal condition, 2 short Make sure that the remote controller is set to the failure mode recall function.
Page 88 NOTE: Blinking patterns of this mode differ from the ones of Troubleshooting check table (11-4.). 3. Table of outdoor unit failure mode recall function LED indication The left lamp of Indoor/ (Outdoor P.C. OPERATION IN- Abnormal point outdoor unit Condition Remedy board) DICATOR lamp...
Page 89 11-3. INSTRUCTION OF TROUBLESHOOTING • Check the indoor unit with referring to the indoor unit service manual, and confirm that there is any problem in the indoor unit. Then, check the outdoor unit with referring to this page. Operation start Check the outdoor unit LED indicator.
Page 90 11-4. TROUBLESHOOTING CHECK TABLE Indication Abnormal point / Con- Symptom Condition Remedy dition LED1(Red) LED2(Yellow) Outdoor The indoor unit detects an abnormality in the LEV • Refer to 11-6. "Check of LEV". Lighted Once LEV and drain pump unit does and drain pump.
Page 91 Indication Abnormal point / Con- Symptom Condition Remedy dition LED1(Red) LED2(Yellow) 22 'Outdoor unit A failure occurs 3 consecutive times within 30 13 times Not lighted Outdoor fan motor • Refer to 11-6. "Check of outdoor fan motor". stops and seconds after the fan gets started.
Page 92 11-5. TROUBLE CRITERION OF MAIN PARTS MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ MXZ-4E83VAHZ Part name Check method and criterion Defrost thermistor (RT61) Fin temperature Measure the resistance with a tester. thermistor (RT64) Ambient temperature Refer to 11-7. “Test point diagram and voltage”, 1. ”Outdoor control P.C.board”, thermistor (RT65) 2.
Page 93 11-6. TROUBLESHOOTING FLOW Outdoor unit does not operate. Check of power supply Check the main power supply circuit for proper connections. Turn ON the power supply. Is there voltage of 230 V AC in the Check the power supply cable. power supply terminal block? Is the output voltage from the outdoor Replace the outdoor control P.C.
Page 94: Outdoor Unit Does Not Operate
• When unit cannot operate neither by the remote controller nor by EMERGENCY OPERATION switch. Indoor unit does not operate. • When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. How to check miswiring and serial signal error (when outdoor unit does not work) Turn OFF the power supply.
Page 95 The cooling operation or heating operation does not operate. Check of R.V. coil • When cooling operation does not work. CNAC Outdoor control CN712 P.C. board 1. Disconnect the lead wire leading to the compressor. Outdoor power 2. 3 minutes after turning ON the power supply, start EMERGENCY CNAC2 P.C.
Page 96 • When cooling, heat exchanger of non-operating indoor unit frosts. • When heating, non-operating indoor unit gets warm. Check of LEV CN791 Turn ON the power supply to the outdoor unit after checking LEV coil is CN792 Outdoor mounted to the LEV body securely. CN793 control CN794...
Page 97 • When heating, room does not get warm. • When cooling, room does not get cool. How to check inverter/compressor Disconnect the terminal of the compressor or the connector (CNMC) between the compressor and the outdoor power P.C. board. 3 minutes after the power supply is turned ON, start EMERGENCY OPERATION.
Page 98 • When thermistor is abnormal. Check of outdoor thermistors (MXZ-4E83VA/5E102VA/2E53VAHZ) Disconnect the connector in the following table and Abnormal measure the resistance of the thermistor to check Replace the thermistor. whether the thermistor is normal or not. (Refer to 11-7.) (MXZ-3E54VA/3E68VA/4E72VA/4E83VAHZ) Normal Replace the thermistor except RT64.
Page 99 • Fan motor does not operate or stops operating shortly after starting the operation. Check of outdoor fan motor Disconnect CNF1 and measure the resistance of the outdoor fan motor. CNF1 Outdoor control P.C. board Is the resistance of outdoor fan motor Measuring points Resistance Replace the outdoor fan motor.
Page 100 • When the operation frequency does not go up from the lowest frequency. Check of HPS Outdoor control CN63H P.C. board 1. Disconnect the connector CN63H in the outdoor control P.C. board. 2. Check the resistance of HPS after 1 minute has passed since the outdoor unit power supply was turned OFF. Infinity Replace HPS.
Page 101 11-7. TEST POINT DIAGRAM AND VOLTAGE Defrost thermistor (RT61) Ambient temperature thermistor (RT65) 1. Outdoor control P.C. board Outdoor heat exchanger temperature MXZ-3E54VA MXZ-3E68VA thermistor (RT68) Serial signal 12 ~ 24 V MXZ-4E72VA MXZ-4E83VAHZ - Room B Room D 230 V AC Room A Room C Input...
Page 102 Defrost thermistor (RT61) MXZ-4E83VAHZ - Ambient temperature thermistor (RT65) Outdoor heat exchanger temperature thermistor (RT68) Serial signal 12 ~ 24 V Room B Room D 230 V AC Room A Room C Input CN741 Signal translation (To Communication CN601 adaptor board) CN621 CN611 (Rotate signal)
Page 103 MXZ-4E83VA - Defrost thermistor (RT61) Ambient temperature thermistor (RT65) MXZ-5E102VA - Outdoor heat exchanger temperature Serial signal 12 ~ 24 V thermistor (RT68) MXZ-2E53VAHZ 230 V AC Room A Room B Room C Room D Room E Input CN741 Signal translation (To Communication adaptor board) CN601...
Page 104 MXZ-4E83VA - Defrost thermistor (RT61) Ambient temperature thermistor (RT65) MXZ-5E102VA - Outdoor heat exchanger temperature Serial signal 12 ~ 24 V thermistor (RT68) 230 V AC Room A Room B Room C Room D Room E Input CN741 Signal translation (To Communication adaptor board) CN601...
Page 105 2. Outdoor power P.C. board MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA Output to drive compressor CN171 Fin temperature thermistor CN152 (RT64) Signal Transmission (From Outdoor Control P.C. board) 5 V DC pulse wave Connect to earth CNAC2 230 V AC Output F1 FUSE T6.3AL250V 230 V AC Input...
Page 106 2. Outdoor power P.C. board MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ Output to drive compressor CN171 Fin temperature thermistor CN152 (RT64) Signal Transmission (From Outdoor Control P.C. board) 5 V DC pulse wave Connect to earth CNAC2 230 V AC Output F1 FUSE T6.3AL250V 230 V AC Input...
Page 107 MXZ-4E83VAHZ CNDC Bus-bur voltage 290 - 370 V DC CN171 Output to drive compressor Connect to earth CNAC1 Fin temperature thermistor 230 V Output (RT64) F1 FUSE T6.3AL250V CN152 F2 FUSE Signal T6.3AL250V Transmission (From Outdoor Control P.C. board) 5 V DC pulse wave Connect to earth Connect to reactor...
Page 108: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <"Terminal with locking mechanism" Detaching points> The terminal which has the locking mechanism can be detached as shown below. There are 2 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.
Page 109 OPERATING PROCEDURE PHOTOS Photo 4 2. Removing the outdoor control P.C. board, the out- door power P.C. board and the reactor Electrical (1) Remove the service panel (Photo 1). Catch of the electrical box assembly box assembly (2) Disconnect the power supply and indoor/outdoor con- necting wire.
Page 110 OPERATING PROCEDURE PHOTOS . Removing the fan motor Photo 8 Screws of the outdoor fan motor (1) Remove the service panel (Photo 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire. (3) Remove the top panel, the cabinet, and the back panel (Photo 1, 2, 3).
Page 111 OPERATING PROCEDURE PHOTOS Photo 11 5. Removing the expansion valve (1) Remove the service panel (Photo 1). (2) Remove the top panel, the cabinet, and the back panel (Photo 1, 2, 3). (Gas recovery is not required if the unit is pumped down.) (3) Remove the electrical parts for removing LEV R (Photo 4, 8).
Page 112 12-2. MXZ-4E83VA MXZ-5E102VA NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the panels Photo 1 (1) Remove the screws fixing the service panel, and remove Screws of the top panel the service panel. (2) Remove the screws fixing the top panel and remove the top panel.
Page 113 OPERATING PROCEDURE PHOTOS 2. Removing the outdoor control P.C. board, the reac- Photo 5 tor and the outdoor power P.C. board Catches of the PB cover (1) Remove the service panel and the top panel (Refer to 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
Page 114 OPERATING PROCEDURE PHOTOS Photo 8 3. Removing the fan motor Propeller fan (1) Remove the service panel, the top panel and the front panel (Refer to 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire. (3) Disconnect the connector CNF1 on the outdoor control P.C. board.
Page 115 OPERATING PROCEDURE PHOTOS 5. Removing the compressor and 4-way valve Photo 10 (1) Remove the service panel, the top panel, the handle (R 4-way valve Rear), the back panel and the front panel (Refer to 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire, and remove the back panel.
Page 116 12-3. MXZ-2E53VAHZ NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the panels Photo 1 (1) Remove the screws fixing the service panel, and remove Screws of the top panel the service panel. (2) Remove the screws fixing the top panel and remove the top panel.
Page 117 OPERATING PROCEDURE PHOTOS 2. Removing the outdoor control P.C. board, the reac- Photo 5 tor and the outdoor power P.C. board Catches of the PB cover (1) Remove the service panel and the top panel (Refer to 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
Page 118 OPERATING PROCEDURE PHOTOS Photo 8 3. Removing the fan motor Screw of Propeller fan (1) Remove the service panel, the top panel and the front the electrical parts Screws of panel (Refer to 1). the outdoor fan motor (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
Page 119 OPERATING PROCEDURE PHOTOS 6. Removing the compressor and 4-way valve Photo 10 (1) Remove the service panel, the top panel, the handle (R 4-way valve Rear), the back panel and the front panel (Refer to 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire, and remove the back panel.
Page 120 12-4. MXZ-4E83VAHZ NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the panels Photo 1 (1) Remove the screws fixing the service panel, and remove Screws of the top panel the service panel. (2) Remove the screws fixing the top panel, remove the top panel.
Page 121 OPERATING PROCEDURE PHOTOS 2. Removing the outdoor control P.C. board, the reac- Photo 4 Screw of tor and the outdoor power P.C. board the electrical (1) Remove the service panel, the top panel and the front parts panel (Refer to 1). Screws of (2) Disconnect the power supply and indoor/outdoor connect- the electrical...
Page 122 OPERATING PROCEDURE PHOTOS 3. Removing the fan motor Screws of Photo 9 (1) Remove the service panel, the top panel and the front the VB fixture Screws of the outdoor fan motor panel (Refer to 1). Heater protector (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
Page 123 OPERATING PROCEDURE PHOTOS 6. Removing the compressor and 4-way valve Photo 11 (1) Remove the service panel, the top panel, the back panel and the front panel (Refer to 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire, and remove the back panel. (3) Recover gas from the refrigerant circuit.
Page 124 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2015 MITSUBISHI ELECTRIC CORPORATION Issued: Feb. 2017. No.OBH723 REVISED EDITION-D Issued: Feb. 2016. No.OBH723 REVISED EDITION-C Issued: Nov. 2015. No.OBH723 REVISED EDITION-B Issued: Sep. 2015. No.OBH723 REVISED EDITION-A Published: Apr.

Mitsubishi Electric MXZ-3E54VA-E1 Service Manual

Quick Links

OUTDOOR UNIT

SERVICE MANUAL

Related Manuals for Mitsubishi Electric MXZ-3E54VA-E1

Summary of Contents for Mitsubishi Electric MXZ-3E54VA-E1

This manual is also suitable for:

Table of Contents