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Mitsubishi Electric MXZ-3D54VA - User Manual

Mitsubishi Electric MXZ-3D54VA
306 pages
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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. NOISE CRITERIA CURVES ···························· 14
5. OUTLINES AND DIMENSIONS ······················ 17
6. WIRING DIAGRAM ·········································· 21
7. REFRIGERANT SYSTEM DIAGRAM ············· 50
8. PERFORMANCE CURVES ····························· 59
9. ACTUATOR CONTROL ··································· 87
10. SERVICE FUNCTIONS ···································· 88
11. TROUBLESHOOTING ····································· 92
12. DISASSEMBLY INSTRUCTIONS ·················· 121
INDOOR UNITS COMBINATION SHEETS
Models
No. OBH626
REVISED EDITION-F
HFC
utilized
R410A
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
Indoor unit service manual
MSZ-EF•VE Series (OBH589)
MSZ-SF•VA Series (OBH555)
MSZ-SF•VE Series (OBH600)
MSZ-FH•VE Series (OBH623)
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)
NOTE:
RoHS compliant products have <G> mark
on the spec name plate.
PARTS CATALOG (OBB626)
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D42VA
MXZ-2D53VA MXZ-2D53VAH
Please void OBH626 REVISED EDITION-E
MXZ-2D33VA
-
E1
,
E2
,
ER2
,
ET2
MXZ-2D40VA
-
E1
,
ER2
MXZ-2D42VA
-
E2
,
ET2
MXZ-2D53VA
-
E1
,
E2
,
ER2
,
ET2
MXZ-2D53VAH
-
E1
,
E2
,
ER2
MXZ-3D54VA
-
E1
MXZ-3D54VA2
-
E2
,
ER2
,
ET2
MXZ-3D68VA
-
E1
,
E2
,
ER2
,
ET2
MXZ-4D72VA
-
E1
,
E2
,
ER2
,
ET2
MXZ-4D83VA
-
E1
,
E2
,
ER1
,
ER2
,
ET2
MXZ-5D102VA
-
E1
,
E2
,
ER1
,
ER2
,
ET2
Revision F:
MXZ-2D33/2D42/2D53/3D68/4D72/4D83/5D102VA
-
ET2
and MXZ-3D54VA2
-
ET2
have been added.

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Questions and Answers

  • N
    Nicholas CrosbyAug 11, 2025
    What to do if the Mitsubishi Electric Air Conditioner detects high pressure with the high-pressure switch (HPS) during operation?
    • P
      phaleAug 11, 2025
      If the high-pressure switch detects high pressure during operation, check the refrigerant circuit and the refrigerant amount. Also, check the stop valve.
  • A
    Andrew PorterAug 16, 2025
    What should I do if the fin temperature exceeds 90 ºC during operation of my Mitsubishi Electric MXZ-3D54VA Air Conditioner?
    • J
      Jennifer StanleyAug 16, 2025
      If the fin temperature exceeds 90 ºC during operation, check around the outdoor unit and the outdoor unit air passage.
  • I
    ijohnsonAug 23, 2025
    What to do if the discharge temperature exceeds 116 ºC during operation of Mitsubishi Electric Air Conditioner?
    • B
      Brian BishopAug 25, 2025
      If the discharge temperature exceeds 116 ºC during operation, check the refrigerant circuit and the refrigerant amount.
  • B
    benjamin15Aug 29, 2025
    What to do if the sensor circuit of current of compressor shorts or opens during compressor operate of Mitsubishi Electric MXZ-3D54VA?
    • B
      Brian RobertsAug 29, 2025
      If the sensor circuit of current of compressor shorts or opens during compressor operation, replace the inverter P.C. board.
  • C
    carsonbrianSep 3, 2025
    What to do if Mitsubishi Electric MXZ-3D54VA Air Conditioner nonvolatile memory data cannot be read properly?
    • M
      Melvin GonzalezSep 4, 2025
      If the nonvolatile memory data cannot be read properly, replace the inverter P.C. board.

Mitsubishi Electric MXZ-3D54VA Specifications

General IconGeneral
Cooling Capacity5.4 kW
Cooling Capacity (BTU)18, 400 BTU/h
Power Supply220-240 V, 50 Hz
RefrigerantR410A
Indoor Units SupportedUp to 3
Outdoor Unit Noise Level50 dB(A)
Coefficient of Performance (Heating)3.61
TypeMulti-Split
Indoor Unit Noise Level21-45 dB(A)

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