Mitsubishi Electric MXZ-2F33VF -E1 Service Manual
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Mitsubishi Electric MXZ-2F33VF -E1 Service Manual

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Table of Contents

OUTDOOR UNIT
SERVICE MANUAL
Models
MXZ-2F33VF
-
E1
MXZ-2F33VF2
-
MXZ-2F33VF3
-
MXZ-2F42VF
-
E1
MXZ-2F42VF2
-
MXZ-2F42VF3
-
MXZ-2F53VF
-
E1
MXZ-2F53VF2
-
MXZ-2F53VF3
-
MXZ-2F53VFH
-
MXZ-2F53VFH2
MXZ-2F53VFH3
MXZ-3F54VF
-
E1
MXZ-3F54VF2
-
MXZ-3F54VF3
-
MXZ-2F33VF
MXZ-2F33VF2
MXZ-2F42VF
MXZ-2F42VF2
MXZ-2F53VF
MXZ-2F53VF2
MXZ-2F53VFH
MXZ-2F53VFH2
MXZ-3F68VF
,
ET1
MXZ-3F68VF2
,
E1
ET1
MXZ-3F68VF3
,
,
,
E1
ET1
ER1
E2
MXZ-4F72VF
,
ET1
MXZ-4F72VF2
E1
,
ET1
MXZ-4F72VF3
E1
,
ET1
,
ER1
,
E2
MXZ-4F80VF2
,
ET1
MXZ-4F80VF3
,
E1
ET1
MXZ-4F83VF
,
,
,
E1
ET1
ER1
E2
MXZ-5F102VF
E1
MXZ-6F122VF
-
E1
-
MXZ-2F53VFHZ
E1
,
E2
MXZ-4F83VFHZ
,
ET1
,
E2
,
ET2
E1
,
ET1
Indoor unit service manual
E1
,
ET1
,
ER1
MSZ-LN•VG Series (OBH766)
MSZ-LN•VG2 Series (OBH766)
MSZ-EF•VG Series (OBH589)
MSZ-AP•VF Series (OBH799)
MSZ-AP•VG Series (OBH788)
MSZ-BT•VG Series (OBH849)
MXZ-2F33VF3
MXZ-2F42VF3
MXZ-2F53VF3
MXZ-2F53VFH3
Revision H:
• MXZ-2F33/42/53VF3 -
MXZ-4F72VF3 -
ER1
MXZ-5F102VF -
ER1
MXZ-2F53VFHZ -
ER1
have been added.
OBH790 REVISED EDITION-G is void.
HFC
utilized
R32
-
,
,
E1
ET1
E2
-
,
E1
ET1
-
,
,
E1
ET1
ER1
-
E1
,
ET1
,
E2
-
E1
,
ET1
-
E1
,
ET1
,
ER1
-
E1
,
ET1
-
,
E1
ET1
-
,
,
E1
ET1
ER1
-
,
,
E1
ET1
ER1
-
,
,
E1
ET1
ER1
-
E1
,
ER1
-
E1
,
ER1
MLZ-KP•VF Series (OBH801)
MFZ-KT•VG Series (OBH843)
SLZ-M•FA Series (OCH522)
SEZ-M•DA Series (HWE17040)
PCA-M•KA Series (OCH659)
PEAD-M•JA(L) Series (HWE16130)
CONTENTS
•
COMPATIBILITY TABLE ·······················3
1. TECHNICAL CHANGES ······························5
2. SAFETY PRECAUTION ·······························7
3. PART NAMES AND FUNCTIONS ················ 17
4. SPECIFICATION ······································ 19
5. NOISE CRITERIA CURVES ························ 44
6. OUTLINES AND DIMENSIONS ··················· 48
7. WIRING DIAGRAM ··································· 56
8. REFRIGERANT SYSTEM DIAGRAM ··········· 82
9. PERFORMANCE CURVES ························· 93
10. ACTUATOR CONTROL ··························· 142
11. SERVICE FUNCTIONS ···························· 143
12. TROUBLESHOOTING ····························· 150
13. DISASSEMBLY INSTRUCTIONS ··············· 184
PARTS CATALOG (OBB790)
, MXZ-3F54/68VF3 -
ER1
ER1
, MXZ-4F83VF -
,
ER1
, MXZ-6F122VF -
,
ER1
and MXZ-4F83VFHZ -
ER1
No. OBH790
REVISED EDITION-H
,
ET2
,
ET2
,

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Summary of Contents for Mitsubishi Electric MXZ-2F33VF -E1

  • Page 1: Table Of Contents

    Revision H: • MXZ-2F33/42/53VF3 - , MXZ-3F54/68VF3 - MXZ-4F72VF3 - , MXZ-4F83VF - MXZ-5F102VF - , MXZ-6F122VF - MXZ-2F53VFHZ - and MXZ-4F83VFHZ - have been added. OBH790 REVISED EDITION-G is void. OUTDOOR UNIT No. OBH790 utilized REVISED EDITION-H SERVICE MANUAL Models MXZ-2F33VF MXZ-3F68VF...
  • Page 2 Revision A: • MXZ-3F54VF - , MXZ-3F68VF - and MXZ-4F72VF - have been added. Revision B: • MXZ-3F54VF2 - , MXZ-3F68VF2- , MXZ-4F72VF2 - and MXZ-4F80VF2 - have been added. Revision C: • MXZ-2F33VF2 - , MXZ-2F42VF2 - , MXZ-2F53VF2 - and MXZ-2F53VFH2 - have been added.

  • Page 3: Indoor / Outdoor Unit Compatibility Table

    INDOOR / OUTDOOR UNIT COMPATIBILITY TABLE <MXZ-2F33VF> <MXZ-2F33VF2> <MXZ-2F33VF3> Connectable indoor unit lineups(Heat pump inverter type) Connectable indoor unit lineups(Heat pump inverter type) Connectable indoor unit lineups(Heat pump inverter type) Capacity class [kW/h] Capacity class [kW/h] Capacity class [kW/h] Model type Model name Model type Model name...
  • Page 4 <MXZ-4F83VF / MXZ-5F102VF / MXZ-6F122VF / MXZ-4F83VFHZ> Connectable indoor unit lineups(Heat pump inverter type) Capacity class [kW/h] Model type Model name 15 18 20 22 25 35 42 50 60 71 MSZ-LN**VG2 MSZ-BT**VG Wall mounted MSZ-EF**VG MSZ-AP**VG 1way MLZ-KP**VF cassette Floor MFZ-KT**VG standing...

  • Page 5: Technical Changes

    TECHNICAL CHANGES MXZ-2F33VF - MXZ-2F42VF - MXZ-2F53VF - MXZ-2F53VFH - MXZ-3F54VF - MXZ-3F68VF - MXZ-4F72VF - MXZ-4F83VF - MXZ-5F102VF - MXZ-6F122VF- MXZ-2F53VFHZ- MXZ-4F83VFHZ- 1. New model MXZ-3F54VF - MXZ-3F54VF - MXZ-3F68VF - MXZ-3F68VF - MXZ-4F72VF - MXZ-4F72VF - 1. LEV-R has been changed. 2.
  • Page 6 MXZ-2F33VF3 - MXZ-2F42VF3 - MXZ-2F53VF3 - MXZ-3F54VF3 - MXZ-3F68VF3 - MXZ-4F72VF3 - 1. New model OBH790H...

  • Page 7: Safety Precaution

    SAFETY PRECAUTION MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit. WARNING Read the OPERATION MANUAL carefully before operation. Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation. Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
  • Page 8 The refrigerant oil applied to flare and flange Use the specified refrigerant only. connections must be ester oil, ether oil or alkylbenzene oil in a small amount. Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the If large amount of mineral oil enters, that can cause deterio- unit is being used, serviced, or disposed of.
  • Page 9 [1] Warning for service (1) Do not alter the unit. (2) For installation and relocation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with refrigerant specified in the outdoor unit installation manual. (3) Ask a dealer or an authorized technician to install, relocate and repair the unit.
  • Page 10 [4] Cautions for unit using R32 refrigerant Basic work procedures are the same as those for conventional units using refrigerant R410A. However, pay careful attention to the following points. (1) Information on servicing (1-1) Checks on the Area Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized.
  • Page 11 (3) Repair to intrinsically Safe Components Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use. Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmos- phere.
  • Page 12 b) Isolate system electrically. c) Before attempting the procedure, ensure that: • mechanical handling equipment is available, if required, for handling refrigerant cylinders; • all personal protective equipment is available and being used correctly; • the recovery process is supervised at all times by a competent person; •...
  • Page 13 [5] Service tools Use the below service tools as exclusive tools for R32 refrigerant. Tool name Specifications Gauge manifold · Only for R32 · Use the existing fitting specifications . (UNF1/2) · Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·...
  • Page 14 (2) Cautions for refrigerant piping work New refrigerant R32 is adopted for replacement inverter series. Although the refrigerant piping work for R32 is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R32 is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
  • Page 15 2-4. CHOOSING THE OUTDOOR UNIT INSTALLATION LOCATION R32 is heavier than air—as well as other refrigerants— so tends to accumulate at the base (in the vicinity of the floor). If R32 accumulates around base, it may reach a flammable concentration in case room is small. To avoid ignition, maintaining a safe work environment is required by ensuring appropriate ventilation.
  • Page 16 C) Create an appropriate ventilation open area. Make sure that the width of the open area is 0.9 [m] or more and the height of the open area is 0.15 [m] or more. However, the height from the bottom of the installation space to the bottom edge of the open area should be 0.125 [m] or less.

  • Page 17: Part Names And Functions

    PART NAMES AND FUNCTIONS MXZ-2F33VF MXZ-2F33VF2 MXZ-2F33VF3 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 Air inlet (Back and side) Piping Drain hose Air outlet Drain outlet MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 MXZ-4F80VF2 MXZ-4F80VF3 Air inlet (Back and side) Air outlet Drain outlet...
  • Page 18 MXZ-4F83VFHZ MXZ-4F83VF MXZ-6F122VF MXZ-5F102VF MXZ-2F53VFHZ Air inlet Air inlet (Back and side) (Back and side) Air outlet Air outlet Drain outlet Drain outlet ACCESSORIES Model MXZ-4F83VF MXZ-5F102VF MXZ-6F122VF Drain socket Drain cap OBH790H...

  • Page 19: Specification

    SPECIFICATION Outdoor model MXZ-2F33VF Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 20 Connecting pipe length Max. 15 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 20 Outdoor model MXZ-2F33VF2 Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 20 Connecting pipe length Max. 15 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 21 Outdoor model MXZ-2F33VF3 Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 20 Connecting pipe length Max. 15 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 22 Outdoor model MXZ-2F42VF Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 23 Outdoor model MXZ-2F42VF2 Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 24 Outdoor model MXZ-2F42VF3 Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 25 Outdoor model MXZ-2F53VF MXZ-2F53VFH Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 26 Outdoor model MXZ-2F53VF2 MXZ-2F53VFH2 Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 27 Outdoor model MXZ-2F53VF3 MXZ-2F53VFH3 Single phase Outdoor unit power supply 220 - 230 - 240 V, 50 Hz Indoor units number Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 28 Outdoor model MXZ-3F54VF Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 29 Outdoor model MXZ-3F54VF2 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 30 Outdoor model MXZ-3F54VF3 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 31 Outdoor model MXZ-3F68VF Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 32 Outdoor model MXZ-3F68VF2 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 33 Outdoor model MXZ-3F68VF3 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 34 Outdoor model MXZ-4F72VF Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 35 Outdoor model MXZ-4F72VF2 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 36 Outdoor model MXZ-4F72VF3 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 37 Outdoor model MXZ-4F80VF2 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 38 Outdoor model MXZ-4F80VF3 Single phase Outdoor unit power supply 220 - 230 - 240 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 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 39 Outdoor model MXZ-4F83VF Single phase Outdoor unit power supply 220 -230 - 240 V, 50 Hz 3 Indoor units number 1 to 4 4 Piping total length Max. 70 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 40 Outdoor model MXZ-5F102VF Single phase Outdoor unit power supply 220 -230 - 240 V, 50 Hz 3 Indoor units number 1 to 5 4 Piping total length Max. 80 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 41 Outdoor model MXZ-6F122VF Single phase Outdoor unit power supply 220 - 230 - 240V, 50 Hz 3 Indoor units number 1 to 6 Piping total length Max. 80 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 42 Outdoor model MXZ-2F53VFHZ Single phase Outdoor unit power supply 220 -230 - 240 V, 50 Hz Indoor units number 1 to 2 3 Piping total length Max. 30 Connecting pipe length Max. 20 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.
  • Page 43 Outdoor model MXZ-4F83VFHZ Single phase Outdoor unit power supply 220 -230 - 240 V, 50 Hz Indoor units number 1 to 4 3 Piping total length Max. 70 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor ~ Indoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM.

  • Page 44: Noise Criteria Curves

    NOISE CRITERIA CURVES MXZ-2F33VF MXZ-2F42VF MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F33VF3 MXZ-2F42VF3 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 NC-20...
  • Page 45 MXZ-3F54VF MXZ-3F68VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-3F54VF3 MXZ-3F68VF3 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 NC-20 HEARING FOR...
  • Page 46 MXZ-4F83VF MXZ-5F102VF 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 HEARING FOR NC-20 CONTINUOUS CONTINUOUS...
  • Page 47 MXZ-2F53VFHZ MXZ-4F83VFHZ 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 HEARING FOR NC-20 CONTINUOUS CONTINUOUS...

  • Page 48: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 Unit: mm MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 1.Installation space OBH790H...
  • Page 49 MXZ-3F54VF MXZ-3F68VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-3F54VF3 MXZ-3F68VF3 Unit: mm 1.Installation space 2.Service space Note : Leave front and both sides 100 or more free of obstruction. 100 or more Service space 350 or more 350 or more Note : Leave front and overhead free of obstruction.
  • Page 50 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F80VF2 MXZ-4F72VF3 MXZ-4F80VF3 Unit: mm 1.Installation space 2.Service space Note : Leave front and both sides 100 or more free of obstruction. 100 or more Service space 350 or more 350 or more Note : Leave front and overhead free of obstruction.
  • Page 51 MXZ-4F83VF Unit: mm Air in Air in Air out Air in OBH790H...
  • Page 52 MXZ-5F102VF Unit: mm Air in Air in Air out Air in OBH790H...
  • Page 53 MXZ-6F122VF Unit: mm Air in 2-U Shaped Notched Hole (Foundation Bolt M10) Air in 6-ø33 Drain Hole Air out 2-12×36 Oval Hole (Foundation Bolt M10) Handle Handle Handle Handle Handle F unit Liquid pipe : Ø6.35(flared)1/4 connection Gas pipe : Ø9.52(flared)3/8 E unit Liquid pipe : Ø6.35(flared)1/4 connection...
  • Page 54 MXZ-2F53VFHZ Unit: mm OBH790H...
  • Page 55 MXZ-4F83VFHZ Unit: mm OBH790H...

  • Page 56: Wiring Diagram

    WIRING DIAGRAM MXZ-2F33VF - MXZ-2F42VF - MXZ-2F53VF - OBH790H...
  • Page 57 MXZ-2F33VF2 - MXZ-2F42VF2 - MXZ-2F53VF2 - OBH790H...
  • Page 58 MXZ-2F33VF2 - MXZ-2F42VF2 - MXZ-2F53VF2 - OBH790H...
  • Page 59 MXZ-2F33VF3 - MXZ-2F42VF3 - MXZ-2F53VF3 - OBH790H...
  • Page 60 MXZ-2F33VF3 - MXZ-2F42VF3 - MXZ-2F53VF3 - OBH790H...
  • Page 61 MXZ-2F53VFH - OBH790H...
  • Page 62 MXZ-2F53VFH2 - OBH790H...
  • Page 63 MXZ-2F53VFH3 - OBH790H...
  • Page 64 MXZ-3F54VF - MXZ-3F68VF - OBH790H...
  • Page 65 MXZ-3F54VF2 - MXZ-3F68VF2 - OBH790H...
  • Page 66 MXZ-3F54VF2 - MXZ-3F68VF2 - OBH790H...
  • Page 67 MXZ-3F54VF3 - MXZ-3F68VF3 - OBH790H...
  • Page 68 MXZ-3F54VF3 - MXZ-3F68VF3 - OBH790H...
  • Page 69 MXZ-4F72VF - OBH790H...
  • Page 70 MXZ-4F72VF2 - MXZ-4F80VF2 - OBH790H...
  • Page 71 MXZ-4F72VF2 - MXZ-4F80VF2 - OBH790H...
  • Page 72 MXZ-4F72VF3 - MXZ-4F80VF3 - OBH790H...
  • Page 73 MXZ-4F72VF3 - MXZ-4F80VF3 - OBH790H...
  • Page 74 MXZ-4F83VF - OBH790H...
  • Page 75 MXZ-4F83VF - OBH790H...
  • Page 76 MXZ-5F102VF - OBH790H...
  • Page 77 MXZ-5F102VF - OBH790H...
  • Page 78 MXZ-6F122VF - OBH790H...
  • Page 79 MXZ-6F122VF - OBH790H...
  • Page 80 MXZ-2F53VFHZ - OBH790H...
  • Page 81 MXZ-4F83VFHZ - OBH790H...

  • Page 82: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM MXZ-2F33VF MXZ-2F33VF2 MXZ-2F33VF3 Unit: mm Compressor Discharge R.V. coil temperature Refrigerant flow in cooling thermistor RT62 Refrigerant flow in heating Muffler Indoor unit 4-way valve Stop valve Sub muffler (with service port) Indoor unit Outdoor heat exchanger Stop valve temperature (with service port)
  • Page 83 MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 Unit: mm Compressor Discharge R.V. coil temperature Refrigerant flow in cooling thermistor RT62 Refrigerant flow in heating Muffler Indoor unit 4-way valve Stop valve Sub muffler (with service port) Indoor unit Outdoor heat Stop valve exchanger...
  • Page 84 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 Unit: mm Compressor High-pressure switch Discharge R.V. coil temperature Charge pipe Refrigerant flow in cooling thermistor RT62 Oil separator Refrigerant flow in heating 4-way Capillary tube valve Indoor unit Stop valve with service port Indoor unit Outdoor heat Muffler exchanger Indoor unit...
  • Page 85 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 Unit: mm Compressor High-pressure switch Discharge R.V. coil temperature Charge pipe Refrigerant flow in cooling thermistor RT62 Oil separator Refrigerant flow in heating 4-way Capillary tube valve Indoor unit Stop valve with service port Indoor unit Outdoor heat Muffler Indoor unit exchanger...
  • Page 86 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 Unit: mm MXZ-4F80VF2 MXZ-4F80VF3 Compressor High-pressure switch Discharge R.V. coil temperature Charge pipe Refrigerant flow in cooling thermistor RT62 Refrigerant flow in heating Oil separator 4-way Indoor unit Capillary tube valve Stop valve with service port Indoor unit Indoor unit Outdoor heat Muffler...
  • Page 87 UNIT: mm MXZ-4F83VF R.V.coil Refrigerant flow in heating Accumulator Compressor Refrigerant flow in cooling High Pressure Switch Compressor shell temperature thermistor RT62 Union Indoor unit D Muffler Φ9.52 Gas Charge Pipe Indoor unit C 4way Valve Φ9.52 Indoor unit B Muffler Φ9.52 Indoor unit A...
  • Page 88 UNIT: mm MXZ-5F102VF R.V.coil Refrigerant flow in heating Accumulator Compressor Refrigerant flow in cooling High Pressure Switch Compressor shell temperature Union thermistor RT62 Muffler Indoor unit E Φ9.52 Gas Charge Pipe Indoor unit D 4way Valve Φ9.52 Indoor unit C Muffler Φ9.52 Indoor unit B...
  • Page 89 MXZ-6F122VF UNIT: mm R.V.coil Refrigerant flow in heating Compressor Refrigerant flow in cooling Compressor shell temperature Oil Separator Indoor unit F thermistor RT62 Φ9.52 High Pressure Switch Indoor unit E Strainer #100 Φ9.52 4way Indoor unit D Valve Φ9.52 Indoor unit C Muffler Φ9.52 Indoor unit B...
  • Page 90 UNIT: mm MXZ-2F53VFHZ R.V.coil Refrigerant flow in heating Accumulator Compressor Refrigerant flow in cooling High Pressure Switch Compressor shell temperature thermistor RT62 Muffler Union Gas Charge Pipe Indoor unit B 4way Valve Φ9.52 Muffler Indoor unit A Stop Valve Φ9.52 (with service port) Outdoor Outdoor...
  • Page 91 UNIT: mm MXZ-4F83VFHZ R.V.coil Refrigerant flow in heating Compressor Refrigerant flow in cooling Compressor shell temperature Oil Separator thermistor RT62 High Pressure Switch Strainer #100 4way Indoor unit D Valve Φ9.52 Indoor unit C Muffler Φ9.52 Indoor unit B Φ9.52 Stop Valve Outdoor (with service port)
  • Page 92 Method of Charging refrigerant ■MXZ-3F54VF/3F68VF/4F72VF Indoor unit Connection Piping Total Pre charge refrigerant number of specific I/U length 1.4 kg 0.0 kg ■MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 Piping Total Pre charge refrigerant length 2.4 kg 2.4 kg 0.0 kg ■MXZ-2F42VF/2F53VF/2F53VFH ■MXZ-2F42VF2/2F53VF2/2F53VFH2 Piping Total Pre charge refrigerant length 1.2 kg...

  • Page 93: Performance Curves

    PERFORMANCE CURVES MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-4F83VF MXZ-5F102VF MXZ-6F122VF MXZ-2F53VFHZ MXZ-4F83VFHZ 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 94 9-1. CAPACITY AND THE INPUT CURVES MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 Cooling capacity 11.1 12.8 10.2 11.6 10.5 20 25 35 40 Outdoor intake air Dry - bulb temperature (ºC) Total input (Cooling) 26 24 20 25 35 40...
  • Page 95 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 Cooling capacity 11.1 12.8 10.2 11.6 10.5 45 46 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 45 46 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 30.9...
  • Page 96 MXZ-4F83VF MXZ-5F102VF Cooling capacity 3.8 6.8 4.8 5.0 7.3 9.0 4546 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 4546 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 17.9 19.2 21.5 19.2 17.7 22.1 27.5 29.5...
  • Page 97 MXZ-6F122VF Cooling capacity 3.8 6.8 4.8 5.0 7.3 9.0 20 25 35 40 45 46 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 20 25 35 40 45 46 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 17.9...
  • Page 98 MXZ-2F53VFHZ Cooling capacity 4.8 5.0 7.3 9.0 3.8 6.8 45 46 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 45 46 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 29.6 17.9 19.2 21.5 19.2 17.7 22.1...
  • Page 99 MXZ-4F83VFHZ Cooling capacity 3.8 6.8 4.8 5.0 7.3 9.0 4546 Outdoor intake air Dry - bulb temperature ( ºC Total input (Cooling) 4546 Outdoor intake air Dry - bulb temperature ( ºC Heating capacity 17.9 19.2 21.5 19.2 17.7 22.1 27.5 29.5 27.0...
  • Page 100 9-2. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY (single operation) MXZ-2F33VF MXZ-2F33VF2 MXZ-2F33VF3 15-class unit <HEAT>Total input <COOL>Total input <HEAT>Capacity <COOL>Capacity Frequency Frequency Frequency Frequency 18-class unit <HEAT>Capacity <HEAT>Total input <COOL>Total input <COOL>Capacity Frequency Frequency Frequency Frequency 20-class unit <HEAT>Capacity <HEAT>Total input <COOL>Total input...
  • Page 101 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 15-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 18-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 20-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 22-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 102 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 Frequency Frequency Frequency Frequency 35-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 15-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 18-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity...
  • Page 103 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 25-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 35-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 42-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 50-class unit...
  • Page 104 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 15-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 18-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 20-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 22-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 105 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 25-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 35-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 42-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 50-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 106 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 15-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 18-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 20-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 22-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 107 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 35-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 42-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 50-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 60-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 108 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 15-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 18-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 20-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 22-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 109 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 35-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 42-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 50-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 60-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 110 MXZ-4F80VF2 MXZ-4F80VF3 15-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 18-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 20-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 22-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 111 MXZ-4F80VF2 MXZ-4F80VF3 35-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 42-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 50-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 60-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity...
  • Page 112 MXZ-4F83VF 15-class unit <COOL>Capacity <HEAT>Total input <COOL>Total input <HEAT>Capacity 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 113 MXZ-4F83VF 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Total input <HEAT>Capacity 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 <HEAT>Capacity <HEAT>Total input <COOL>Total input Frequency Frequency Frequency Frequency 60-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
  • Page 114 MXZ-5F102VF 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Total input <HEAT>Capacity 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 115 MXZ-5F102VF 35-class unit <COOL>Capacity <HEAT>Total input <COOL>Total input <HEAT>Capacity 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 <HEAT>Capacity <HEAT>Total input <COOL>Total input...
  • Page 116 MXZ-6F122VF 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Total input <HEAT>Capacity Frequency Frequency Frequency Frequency 18-class unit <COOL>Total input <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 20-class unit <COOL>Capacity <HEAT>Capacity <HEAT>Total input <COOL>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity...
  • Page 117 MXZ-6F122VF 35-class unit <COOL>Capacity <HEAT>Total input <COOL>Total input <HEAT>Capacity 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 118 MXZ-2F53VFHZ 15-class unit <COOL>Capacity <HEAT>Total input <COOL>Total input <HEAT>Capacity 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 119 MXZ-2F53VFHZ 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Total input <HEAT>Capacity Frequency Frequency Frequency Frequency 42-class unit <COOL>Capacity <HEAT>Capacity <HEAT>Total input <COOL>Total input Frequency Frequency Frequency Frequency 50-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency OBH790H...
  • Page 120 MXZ-4F83VFHZ 15-class unit <COOL>Capacity <COOL>Total input <HEAT>Total input <HEAT>Capacity 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 <HEAT>Capacity <HEAT>Total input <COOL>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input...
  • Page 121 MXZ-4F83VFHZ 35-class unit <COOL>Capacity <COOL>Total input <HEAT>Total input <HEAT>Capacity Frequency Frequency Frequency Frequency 42-class unit <COOL>Capacity <HEAT>Capacity <HEAT>Total input <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 122 9-3. 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.
  • Page 123 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 15-class unit 18-class unit (MPa[Gauge]) (MPa[Gauge]) 30Hz 30Hz 30Hz 30Hz (°C) (°C) (°C) (°C) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 20-class unit 22-class unit...
  • Page 124 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 15-class unit 18-class unit (MPa[Gauge]) (MPa[Gauge]) 30Hz 30Hz 30Hz 30Hz (°C) (°C) (°C) (°C) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 20-class unit...
  • Page 125 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 15-class unit 18-class unit (MPa[Gauge]) (MPa[Gauge]) 40Hz 40Hz 40Hz 40Hz (°C) (°C) (°C) (°C) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 20-class unit 22-class unit...
  • Page 126 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 15-class unit 18-class unit (MPa[Gauge]) (MPa[Gauge]) 30Hz 30Hz 30Hz 30Hz (°C) (°C) (°C) (°C) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 22-class unit...
  • Page 127 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 60-class unit (MPa[Gauge]) 30Hz 30Hz Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) MXZ-4F80VF2 MXZ-4F80VF3 18-class unit 15-class unit (MPa[Gauge]) (MPa[Gauge]) 30Hz 30Hz 30Hz 30Hz (°C) (°C) (°C) (°C) Ambient temperature ( ) Ambient temperature ( )
  • Page 128 MXZ-4F80VF2 MXZ-4F80VF3 42-class unit 50-class unit (MPa[Gauge]) (MPa[Gauge]) 30Hz 30Hz 30Hz 30Hz (°C) (°C) (°C) (°C) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) 60-class unit (MPa[Gauge])
  • Page 129 MXZ-4F83VF 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 (%) 50-class unit 42-class unit (MPa[Gauge]) (MPa[Gauge])
  • Page 130 MXZ-5F102VF 20-class unit 22-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 (%) 25-class unit 35-class unit (MPa[Gauge]) (MPa[Gauge])
  • Page 131 MXZ-6F122VF 18-class unit 15-class unit (MPa[Gauge]) (MPa[Gauge]) 28Hz 28Hz 28Hz 28Hz 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 132 71-class unit 60-class unit (MPa[Gauge]) (MPa[Gauge]) 28Hz 28Hz 28Hz 28Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) Ambient humidity (%) MXZ-2F53VFHZ 15-class unit 18-class unit (MPa[Gauge]) (MPa[Gauge])
  • Page 133 MXZ-2F53VFHZ 50-class unit 42-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 (%) MXZ-4F83VFHZ 18-class unit 15-class unit (MPa[Gauge])
  • Page 134 MXZ-4F83VFHZ 42-class unit 50-class unit (MPa[Gauge]) (MPa[Gauge]) 28Hz 28Hz 28Hz 28Hz 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 135 (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 9-3.) MXZ-2F33VF MXZ-2F33VF2 MXZ-2F33VF3 15-class unit 18-class unit 20-class unit 58Hz 58Hz 58Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit...
  • Page 136 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 15-class unit 18-class unit 20-class unit 22-class unit 34Hz 34Hz 34Hz 34Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit 50-class unit 34Hz 34Hz...
  • Page 137 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 18-class unit 20-class unit 15-class unit 22-class unit 36Hz 36Hz 36Hz 36Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit 50-class unit 36Hz 36Hz...
  • Page 138 MXZ-4F80VF2 MXZ-4F80VF3 60-class unit 36Hz Ambient temperature ( ) MXZ-4F83VF 15-class unit 18-class unit 20-class unit 22-class unit 68Hz 68Hz 68Hz 68Hz 68Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit...
  • Page 139 MXZ-5F102VF 15-class unit 18-class unit 20-class unit 22-class unit 68Hz 68Hz 68Hz 68Hz 68Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit 50-class unit 68Hz 68Hz...
  • Page 140 MXZ-6F122VF 15-class unit 18-class unit 20-class unit 22-class unit 54Hz 54Hz 54Hz 54Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit 50-class unit 54Hz...
  • Page 141 MXZ-2F53VFHZ 15-class unit 18-class unit 20-class unit 22-class unit 68Hz 68Hz 68Hz 68Hz 68Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit 50-class unit 68Hz 68Hz...

  • Page 142: Actuator Control

    ACTUATOR CONTROL MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 Relation between main sensor and actuator Actuator Sensor Purpose Outdoor Defrost 4-way Compressor fan motor valve heater 1 Discharge temperature thermistor Protection...

  • Page 143: Service Functions

    SERVICE FUNCTIONS MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-4F83VF MXZ-5F102VF MXZ-6F122VF MXZ-2F53VFHZ MXZ-4F83VFHZ 11-1. THE POSITION OF SWITCH <MXZ-2F33VF/2F42VF/2F53VF/2F53VFH, MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2, MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3> 1 2 3 4 5 6 Outdoor display P.C.
  • Page 144 11-3. HOW TO SET LOW STANDBY POWER MODE MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 •The factory setting of low standby power mode for above units is “Activated”. In case that compressor is not in operation, and both LED1 (Red) and LED2 (Yellow) are not lit, check the setting of low standby power mode on the outdoor control P.C.
  • Page 145 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-4F83VF MXZ-5F102VF MXZ-6F122VF •The factory setting of low standby power mode for above units is “Deactivated”. In case that compressor is not in operation, and both LED1 (Red) and LED2 (Yellow) are not lit, check the setting of low standby power mode on the outdoor control P.C.
  • Page 146 11-4. LOWERING THE OPERATING NOISE OF THE OUTDOOR UNIT With this function, the operating noise of the outdoor unit can be lowered by reducing the operation load, for example, during nighttime in COOL mode. However, note that the cooling and heating capacity may lower if this function is activated. Changing the setting is required to activate this function.
  • Page 147 11-5. AUTOMATIC LINE CORRECTING <MXZ-2F33VF/2F42VF/2F53VF/2F53VFH, MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2, MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3> This outdoor unit has an automatic line correcting function which automatically detects and corrects improper wiring or piping. <MXZ-2F33VF/2F42VF/2F53VF/2F53VFH, MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2, MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3> Improper wiring or piping can be automatically detected when one indoor unit is operated in COOL mode for 30 minutes. When improper wiring or piping is detected, wiring lines are corrected (A to B/ B to A) with the software.
  • Page 148 <MXZ-3F54VF/3F68VF/4F72VF, MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2, MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3, > MXZ-4F83/5F102/6F122VF, MXZ-2F53/4F83VFHZ 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 15 minutes.
  • Page 149 11-6. CHANGING THE SET REFRIGERANT EVAPORATING TEMPERATURE NOTE: If you lower the refrigerant evaporating temperature with the windows open, it may cause dew drop. [How to change the refrigerant evaporating temperature] (1) Make sure there is no possibility of causing dew drop before making the setting. (2) Make the setting referring to the table below.

  • Page 150: Troubleshooting

    TROUBLESHOOTING MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-4F83VF MXZ-5F102VF MXZ-6F122VF MXZ-2F53VFHZ MXZ-4F83VFHZ 12-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring.
  • Page 151 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. Make sure that the remote controller is set to the failure mode recall function. With the remote controller headed towards the indoor unit, press the TEMPERATURE buttons to adjust the set temperature to 25°C.
  • Page 152 NOTE: Blinking patterns of this mode differ from the ones of 3. Table of outdoor unit failure mode recall function Troubleshooting check table (12-4). MXZ-2F33/42/53VF/VF2/VF3, MXZ-2F53VFH/VFH2/VFH3 Upper or LED indication Indoor/ left lamp of (Outdoor P.C. board) outdoor OPERATION Abnormal point unit failure LED 1 LED 2...
  • Page 153 Upper or LED indication Indoor/ left lamp of (Outdoor P.C. board) outdoor OPERATION Abnormal point unit failure LED 1 LED 2 Condition Remedy INDICATOR (Failure mode/protection) mode lamp (Indoor recall unit) function 14-time blink Refrigerant leakage The refrigerant sensor mounted on the •...
  • Page 154 NOTE: Blinking patterns of this mode differ from the ones of Troubleshooting check table (12-4.). MXZ-3F, 4F, 5F, 6F, MXZ-2F53VFHZ, MXZ-4F83VFHZ LED indication The left lamp of Indoor/ (Outdoor P.C. OPERATION IN- Abnormal point outdoor unit Condition Remedy board) DICATOR lamp (Failure mode/protection) failure mode (Indoor unit)
  • Page 155 LED indication The left lamp of Indoor/ (Outdoor P.C. OPERATION IN- Abnormal point outdoor unit Condition Remedy board) DICATOR lamp (Failure mode/protection) failure mode (Indoor unit) recall function LED1 LED2 • Turn off the power after the indoor 14-time blink Refrigerant leakage 1.Refrigerant leaks from the piping or the unit finishes its FAN operation.
  • Page 156 12-3. INSTRUCTION OF TROUBLESHOOTING • Check the indoor unit 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 157 12-4. TROUBLESHOOTING CHECK TABLE MXZ-2F33/42/53VF/VF2/VF3, MXZ-2F53VFH/VFH2/VFH3 Indication Abnormal point / Con- Symptom Condition Remedy dition LED1(Red) LED2(Yellow) The indoor unit detects an abnormality in the LEV • Refer to 12-6. "Check of LEV". Once LEV and drain pump and drain pump. •...
  • Page 158 Indication Abnormal point / Con- Symptom Condition Remedy dition LED1(Red) LED2(Yellow) The input current exceeds 8 A (MXZ-2F33VF, MXZ-2F33VF2, MXZ-2F33VF3)/ 10 A (MXZ- Primary current protec- 2F42VF, MXZ-2F42VF2, MXZ-2F42VF3, MXZ- tion 2F53VF/VFH, MXZ-2F53VF2/VFH2, MXZ- Once These symptoms do not mean any abnormality of 2F53VF3/VFH3).
  • Page 159 MXZ-3F, 4F, 5F, 6F, MXZ-2F53VFHZ, MXZ-4F83VFHZ Indication Abnormal point / Symptom Condition Remedy Condition LED1(Red) LED2(Yellow) The indoor unit detects an abnormality in the LEV • Refer to 12-6. "Check of LEV". Once LEV and drain pump and drain pump. •...
  • Page 160 Indication Abnormal point / Symptom Condition Remedy Condition LED1(Red) LED2(Yellow) High pressure is detected with the high pressure switch (HPS) during operation. High pressure • Check around of gas and the refrigerant circuit. 5 times Not lit The outdoor heat exchanger temperature exceeds protection •...
  • Page 161 Indication Abnormal point / Symptom Condition Remedy Condition LED1(Red) LED2(Yellow) During cooling operation, the temperature of indoor heat exchanger becomes 7°C - 11°C* or less within 1 hour after the compressor Cooling evaporating starts running, or it becomes 9°C - 17°C* or This symptom does not mean any abnormality of 36 Outdoor 8 times...
  • Page 162 12-5. TROUBLE CRITERION OF MAIN PARTS MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-4F83VF MXZ-5F102VF MXZ-6F122VF MXZ-2F53VFHZ MXZ-4F83VFHZ Part name Check method and criterion Measure the resistance with a tester.
  • Page 163 Part name Check method and criterion Measure the resistance with a tester. (Part temperature : -10°C - 40°C) Normal MXZ-2F33VF/VF2/VF3 MXZ-3F54VF/VF2/VF3 MXZ-2F42VF/VF2/VF3 MXZ-3F68VF/VF2/VF3 MXZ-2F53VF/VF2/VF3 MXZ-4F72VF/VF2/VF3 MXZ-2F53VFH/VFH2/VFH3 MXZ-4F80VF2/VF3 R.V. coil 1.20 k - 1.56 k 1.26 k - 1.62 k Normal MXZ-4F83VF MXZ-6F122VF MXZ-5F102VF...
  • Page 164 12-6. TROUBLESHOOTING FLOW Outdoor unit does not operate. Check of power supply MXZ-2F33VF/2F42VF/2F53VF/2F53VFH MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2 MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3 Check the main power supply circuit for proper connections. Turn ON the power supply. Is there voltage of 220 - 230 - 240 V AC Check the power supply and correct them.
  • Page 165 • When the indoor unit does not operate, it cannot be operated either with the remote controller or with the EMERGENCY OPERATION switch. • When the outdoor unit does not operate, the OPERATION INDICATOR lamp on the indoor unit blinks ON and OFF every 0.5-second.
  • Page 166 MXZ-4F83/5F102/6F122VF MXZ-3F54VF/3F68VF/4F72VF MXZ-2F53/4F83VFHZ MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 Turn OFF the power supply. LED indication for communication status Communication status is indicated Is there rated voltage in by the LED. Check the power the power supply? supply. Unit status Blinking: normal communication Lighting: abnormal communication or not connected Turn ON the power supply.
  • Page 167 The cooling operation or heating operation does not operate. Check of R.V. coil MXZ-2F33VF/2F42VF/2F53VF/2F53VFH Connector MXZ-2F MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2 CN721 Inverter P.C. board MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3 • The heating operation does not operate. 1. Disconnect the lead wire leading to the compressor. 2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in HEAT mode.
  • Page 168 MXZ-4F83/5F102/6F122VF MXZ-3F54VF/3F68VF/4F72VF MXZ-3F, 4F, 5F, 6F MXZ-2F53/4F83VFHZ Connector MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 2F53/4F83VFHZ MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 CNAC Outdoor control P.C. • When cooling operation does not work. CN712 board Outdoor power P.C. CNAC2 1. Disconnect the lead wire leading to the compressor. board 2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in COOL mode.
  • Page 169 • When cooling, heat exchanger of non-operating indoor unit frosts. • When heating, non-operating indoor unit gets warm. Check of LEV MXZ-3F, 4F, 5F,6F Connector MXZ-2F 2F53/4F83VFHZ CN724 ― Inverter P.C. board CN725 CN791 CN792 CN793 Outdoor control ― CN794 P.C.
  • Page 170 • 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 171 • When thermistor is abnormal. Check of outdoor thermistors Disconnect the connector in the following table and Replace the thermistor except RT64. Abnormal measure the resistance of the thermistor to check If RT64 is abnormal, replace the outdoor power whether the thermistor is normal or not. (Refer to 12-7.) P.C.
  • Page 172 • Fan motor does not operate or stops operating shortly after starting the operation. Check of outdoor fan motor Connector MXZ-2F MXZ-2F33VF/2F42VF/2F53VF/2F53VFH CN931 MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2 Inverter P.C. board CN932 MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3 Disconnect CN932 and measure the resistance of the outdoor fan motor. Is the resistance of outdoor fan motor normal? (Refer to 12-5.) Turn ON the breaker.
  • Page 173 MXZ-4F83/5F102/6F122VF MXZ-3F54VF/3F68VF/4F72VF MXZ-2F53/4F83VFHZ MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 MXZ-3F, 4F, 5F, 6F Connector 2F53/4F83VFHZ Disconnect CNF1 and measure the resistance of the outdoor fan motor. Outdoor control CNF1 P.C. board Is the resistance of outdoor fan motor Measuring points Resistance Replace the outdoor fan motor. normal? (Refer to right table.) pin1 - pin4 60 kΩ...
  • Page 174 • When the operation frequency does not go up from the lowest frequency. Check of HPS MXZ-3F, 4F, 5F, 6F Connector MXZ-4F83/5F102VF 2F53/4F83VFHZ MXZ-3F54VF/3F68VF/4F72VF MXZ-2F53/4F83VFHZ MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 Outdoor control CN63H P.C. board MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 1. Disconnect the connector CN63H in the outdoor control P.C. board. 2.
  • Page 175 Check of outdoor refrigerant circuit MXZ-2F33VF/2F42VF/2F53VF/2F53VFH MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2 MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3 MXZ-6F122VF The operation has stopped to prevent the diesel explosion caused by air trapped in the refrigerant circuit. Close the stop Has the operation stopped during pump down? valve, and disconnect the power plug or turn the breaker OFF. CAUTION : Do not start the operation again to prevent hazards.
  • Page 176 12-7. TEST POINT DIAGRAM AND VOLTAGE 1. Inverter P.C. board MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 Back side of unit R.V. coil/21S4 (CN721) Heater (CN722) MXZ-2F53VFH, MXZ-2F53VFH2, 220-230-240 V AC 280 - 370 V DC FUSE (F901) Smoothing capacitor FUSE (F801)
  • Page 177 2. Outdoor control P.C. board Defrost thermistor (RT61) Ambient temperature thermistor (RT65) MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF Outdoor heat exchanger temperature MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 thermistor (RT68) MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 Serial signal 12 ~ 24 V Room B Room D 220 - 230 - 240 V AC Room A Room C Input...
  • Page 178 Defrost thermistor (RT61) MXZ-4F83VF Ambient temperature thermistor (RT65) MXZ-5F102VF Outdoor heat exchanger temperature thermistor (RT68) MXZ-2F53VFHZ Serial signal 12 ~ 24 V 220-230-240 V AC Room A Room B Room C Room D Room E Input CN741 Signal translation (To Communication adaptor board) CN601 CN621...
  • Page 179 Defrost thermistor (RT61) MXZ-6F122VF Ambient temperature thermistor (RT65) MXZ-4F83VFHZ Outdoor heat exchanger temperature thermistor (RT68) Serial signal 12 ~ 24 V Room B Room D Room F 230 V DC Room A Room C Room E Input CN741 Signal translation (To Communication adaptor board) CN601...
  • Page 180 3. Outdoor power P.C. board MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 CN151 Signal transmission (To Outdoor control P.C. board) 15 V 5 V DC pulse wave 15 V Output to drive compressor CN171 Fin temperature thermistor CN152 (RT64) Signal Transmission...
  • Page 181 MXZ-4F83VF MXZ-5F102VF MXZ-2F53VFHZ 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 220-230-240 V AC Output F1 FUSE T6.3AL250V 220-230-240 V AC Input F2 FUSE T6.3AL250V CNAC1...
  • Page 182 MXZ-6F122VF MXZ-4F83VFHZ CNDC Bus-bar voltage 280 - 370 V DC CN171 Output to drive compressor Connect to earth CNAC1 Fin temperature thermistor 220-230-240 V AC 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...
  • Page 183 4. Outdoor display P.C. board MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 Fin temperature thermistor (RT64) To inverter P.C. board (CN936) 0 10 20 30 40 50 60 70 80 (°C) LED1 LED2 Temperature Thermistor R50 = 17 kΩ ± 2% B constant = 4150 ±...

  • Page 184: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS <Detaching method of the terminal with locking mechanism> The terminal which has the locking mechanism can be detached as shown below. There are following 2 types 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 185 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly and the inverter Photo 4 P.C. board Screws of the heat sink (1) Remove the service panel, the top panel and the cabinet Inverter support and the separator (Refer to section 1). assembly (2) Disconnect the power supply and indoor/outdoor connect- ing wire and remove the back panel (Refer to section 1).
  • Page 186 OPERATING PROCEDURE PHOTOS 5. Removing the outdoor fan motor Photo 7 (1) Remove the service panel, the top panel and the cabinet Outdoor heat (Refer to section 1). exchanger (2) Disconnect the power supply and indoor/outdoor connect- temperature ing wire. thermistor (RT68) (3) Disconnect the connectors for outdoor fan motor.
  • Page 187 13-2. MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the cabinet and the panels Photo 1 (1) Remove the screws of the service panel, and remove the service panel.
  • Page 188 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 189 OPERATING PROCEDURE PHOTOS 3. Removing the fan motor Photo 8 Screws of the outdoor fan motor Sound (1) Remove the service panel (Photo 1). proof felt *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 190 OPERATING PROCEDURE PHOTOS 5. Removing the expansion valve Photo 11 (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.) 4-way valve (3) Remove the electrical parts for removing LEV R (Photo 4, 8).
  • Page 191 13-3. MXZ-4F83VF MXZ-5F102VF 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 192 OPERATING PROCEDURE PHOTOS Photo 5 2. Removing the outdoor control P.C. board, the reac- Catches of the PB cover tor and the outdoor power P.C. board (1) Remove the service panel and the top panel (Refer to section 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
  • Page 193 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 section 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 194 OPERATING PROCEDURE PHOTOS 5. Removing the compressor and 4-way valve Photo 10 (1) Remove the service panel, the top panel, the handle (R Rear), the back panel and the front panel (Refer to sec- 4-way valve tion 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire, and remove the back panel.
  • Page 195 13-4. MXZ-2F53VFHZ 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 196 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 section 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
  • Page 197 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 section 1). the outdoor fan motor (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
  • Page 198 OPERATING PROCEDURE PHOTOS 6. Removing the compressor and 4-way valve Photo 10 (1) Remove the service panel, the top panel, the handle (R Rear), the back panel and the front panel (Refer to sec- 4-way valve tion 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire, and remove the back panel.
  • Page 199 13-5. MXZ-4F83VFHZ 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 200 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 section 1). Screws of (2) Disconnect the power supply and indoor/outdoor connect- the electrical...
  • Page 201 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 section 1). Heater protector (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
  • Page 202 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 section 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 203 13-6. MXZ-6F122VF NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 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 204 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the outdoor control P.C. board, the reac- Screw Photo 4 tor and the outdoor power P.C. board of the (1) Remove the service panel, the top panel and the front electrical panel (Refer to section 1). parts (2) Disconnect the power supply cord and indoor/outdoor connecting wire.
  • Page 205 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the fan motor Photo 9 (1) Remove the service panel, the top panel and the front Screws of the panel (Refer to section 1). Screws of the outdoor fan motor VB fixture (2) Disconnect the power supply cord and indoor/outdoor connecting wire.
  • Page 206 Compressor nuts LEV coils HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2018 MITSUBISHI ELECTRIC CORPORATION Issued: Mar. 2021. No.OBH790 REVISED EDITION-H Issued: Feb. 2021. No.OBH790 REVISED EDITION-G Issued: Jul. 2020. No.OBH790 REVISED EDITION-F Issued: Mar. 2020. No.OBH790 REVISED EDITION-E Issued: Nov.

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