Mitsubishi Electric MSZ-AY-VG Series Service Manual
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Mitsubishi Electric MSZ-AY-VG Series Service Manual

Mitsubishi Electric MSZ-AY-VG Series Service Manual

Outdoor/indoor unit
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OUTDOOR UNIT
SERVICE MANUAL
Models
MXZ-2F33VF
-
E1
MXZ-2F33VF2
-
MXZ-2F33VF3
-
MXZ-2F33VF4
-
MXZ-2F42VF
-
E1
MXZ-2F42VF2
-
MXZ-2F42VF3
-
MXZ-2F42VF4
-
MXZ-2F53VF
-
E1
MXZ-2F53VF2
-
MXZ-2F53VF3
-
MXZ-2F53VF4
-
MXZ-2F53VFH
-
MXZ-2F53VFH2
MXZ-2F53VFH3
MXZ-2F53VFH4
MXZ-3F54VF
-
E1
MXZ-3F54VF2
-
MXZ-3F54VF3
-
MXZ-3F54VF4
-
Indoor unit service manual
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-2F33VF
MXZ-2F33VF2
MXZ-2F42VF
MXZ-2F42VF2
MXZ-2F53VF
MXZ-2F53VF2
MXZ-2F53VFH
MXZ-2F53VFH2
,
ET1
,
E1
ET1
,
,
,
E1
ET1
ER1
E2
,
E1
ET1
,
ET1
,
E1
ET1
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,
,
E1
ET1
ER1
E2
,
E1
ET1
,
ET1
,
E1
ET1
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,
E1
ET1
ER1
E2
,
E1
ET1
E1
-
E1
-
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E1
E2
-
E1
,
,
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ET1
E2
ET2
,
E1
ET1
,
,
,
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ET1
ER1
E2
ET2
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E1
ET1
MSZ-AY•VG Series (OBH930, 932)
MSZ-FT•VG Series (OBH864)
MLZ-KP•VF Series (OBH801)
MLZ-KP•VG Series (OBH801)
MFZ-KT•VG Series (OBH843)
MLZ-KY•VG Series (OBH921)
MXZ-2F33VF3
MXZ-2F33VF4
MXZ-2F42VF3
MXZ-2F42VF4
MXZ-2F53VF3
MXZ-2F53VF4
MXZ-2F53VFH3
MXZ-2F53VFH4
Revision P:
• Setting when using piping has been
• Some descriptions have been modified.
OBH790 REVISED EDITION-N is void.
HFC
utilized
R32
MXZ-3F68VF
MXZ-3F68VF2
MXZ-3F68VF3
MXZ-3F68VF4
MXZ-4F72VF
MXZ-4F72VF2
MXZ-4F72VF3
MXZ-4F72VF4
MXZ-4F80VF2
MXZ-4F80VF3
MXZ-4F80VF4
MXZ-4F83VF
MXZ-4F83VF2
MXZ-5F102VF
MXZ-5F102VF2
MXZ-6F120VF2
MXZ-6F122VF
MXZ-2F53VFHZ
MXZ-2F53VFHZ2
,
ER2
MXZ-4F83VFHZ
MXZ-4F83VFHZ2
SLZ-M•FA Series (OCH522)
SEZ-M•DA Series (HWE17040)
SFZ-M•VA Series (HWE19090)
PCA-M•KA Series (OCH659)
PEAD-M•JA(L) Series (HWE16130)
PEAD-M•JA(L)2 Series (HWE21070)
CONTENTS
•
COMPATIBILITY TABLE ······················· 4
1. TECHNICAL CHANGES ······························ 7
2. SAFETY PRECAUTION ······························· 9
3. PART NAMES AND FUNCTIONS ·················19
4. SPECIFICATION ·······································21
5. NOISE CRITERIA CURVES ·························58
6. OUTLINES AND DIMENSIONS ····················62
7. WIRING DIAGRAM ····································70
8. REFRIGERANT SYSTEM DIAGRAM ·········· 111
9. PERFORMANCE CURVES ························ 122
10. ACTUATOR CONTROL ···························· 171
11. SERVICE FUNCTIONS ····························· 172
12. TROUBLESHOOTING ······························ 179
13. DISASSEMBLY INSTRUCTIONS ················ 214
PARTS CATALOG (OBB790)
added (11-9.).
No. OBH790
REVISED EDITION-P
-
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,
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E1
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E2
ET2
-
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-
E1

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Summary of Contents for Mitsubishi Electric MSZ-AY-VG Series

  • Page 1: Table Of Contents

    Revision P: • Setting when using piping has been added (11-9.). • Some descriptions have been modified. OBH790 REVISED EDITION-N is void. OUTDOOR UNIT No. OBH790 utilized REVISED EDITION-P SERVICE MANUAL Models MXZ-2F33VF MXZ-3F68VF MXZ-2F33VF2 MXZ-3F68VF2 MXZ-2F33VF3 MXZ-3F68VF3 MXZ-2F33VF4 MXZ-3F68VF4 MXZ-2F42VF MXZ-4F72VF MXZ-2F42VF2...
  • Page 2 Use the specified 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 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 4: 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...
  • Page 5 <MXZ-3F54VF> <MXZ-3F54VF2> <MXZ-3F54VF3> 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 Model type...
  • Page 6 <MXZ-2F53VFHZ> <MXZ-2F53VFHZ2> Connectable indoor unit lineups (Heat pump inverter type) Connectable indoor unit lineups (Heat pump inverter type) Capacity class [kW/h] Capacity class [kW/h] Model type Model name Model type Model name 15 18 20 22 25 35 42 50 60 71 15 18 20 22 25 35 42 50 60 71 MSZ-LN**VG2 •...

  • Page 7: 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 8 MXZ-2F33VF3 - MXZ-2F42VF3 - MXZ-2F53VF3 - MXZ-3F54VF3 - MXZ-3F68VF3 - MXZ-4F72VF3 - 1. New model MXZ-3F54VF3 - MXZ-3F54VF3 - 1. Outdoor control P.C. board has been changed. 2. Outdoor fan motor has been changed. MXZ-2F33VF3 - MXZ-2F33VF4 - MXZ-2F42VF3 - MXZ-2F42VF4 - MXZ-2F53VF3 - MXZ-2F53VF4 -...

  • Page 9: 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 In case that refrigerant type is R32, this unit uses a flammable refrigerant. (Risk of fire) If refrigerant leaks and comes in contact with fire or heating part, it will create harmful gas and there is risk of fire.
  • Page 10 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 11 [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 12 [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 13 (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 per- missible 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 atmo- sphere.
  • Page 14 (9-2) Isolate system electrically. (9-3) 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 15 [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 16 (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 17 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 18 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 19: Part Names And Functions

    PART NAMES AND FUNCTIONS MXZ-2F33VF MXZ-2F33VF2 MXZ-2F33VF3 MXZ-2F33VF4 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 MXZ-2F42VF4 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VF4 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 MXZ-2F53VFH4 Air inlet (Back and side) Piping Drain hose Air outlet Drain outlet MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 MXZ-3F54VF4 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-3F68VF4 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3...
  • Page 20 MXZ-4F83VF MXZ-4F83VF2 MXZ-4F83VFHZ MXZ-4F83VFHZ2 MXZ-5F102VF MXZ-5F102VF2 MXZ-6F120VF2 MXZ-6F122VF MXZ-2F53VFHZ MXZ-2F53VFHZ2 Air inlet Air inlet (Back and side) (Back and side) Air outlet Air outlet Drain outlet Drain outlet ACCESSORIES MXZ-4F83VF MXZ-5F102VF MXZ-6F120VF2 Model MXZ-4F83VF2 MXZ-5F102VF2 MXZ-6F122VF Drain socket Drain cap OBH790P...

  • Page 21: 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 –...
  • Page 22 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 –...
  • Page 23 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 –...
  • Page 24 Outdoor model MXZ-2F33VF4 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 –...
  • Page 25 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 –...
  • Page 26 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 –...
  • Page 27 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 –...
  • Page 28 Outdoor model MXZ-2F42VF4 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 –...
  • Page 29 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 –...
  • Page 30 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 –...
  • Page 31 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 –...
  • Page 32 Outdoor model MXZ-2F53VF4 MXZ-2F53VFH4 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 –...
  • Page 33 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 –...
  • Page 34 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 –...
  • Page 35 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 –...
  • Page 36 Outdoor model MXZ-3F54VF4 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 –...
  • Page 37 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 –...
  • Page 38 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 –...
  • Page 39 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 –...
  • Page 40 Outdoor model MXZ-3F68VF4 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 –...
  • Page 41 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 –...
  • Page 42 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 –...
  • Page 43 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 –...
  • Page 44 Outdoor model MXZ-4F72VF4 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 –...
  • Page 45 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 –...
  • Page 46 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 –...
  • Page 47 Outdoor model MXZ-4F80VF4 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 –...
  • Page 48 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 –...
  • Page 49 Outdoor model MXZ-4F83VF2 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 –...
  • Page 50 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 –...
  • Page 51 Outdoor model MXZ-5F102VF2 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 –...
  • Page 52 Outdoor model MXZ-6F120VF2 Single phase Outdoor unit power supply 220 - 230 - 240V, 50 Hz *3 Indoor units number 1 to 6 *4 Piping total length Max. 80 Connecting pipe length Max. 25 Height difference (Indoor – Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor –...
  • Page 53 Outdoor model MXZ-6F122VF Single phase Outdoor unit power supply 220 - 230 - 240V, 50 Hz *3 Indoor units number 1 to 6 *4 Piping total length Max. 80 Connecting pipe length Max. 25 Height difference (Indoor – Outdoor) Refer to 8 REFRIGERANT SYSTEM DIAGRAM. Height difference (Indoor –...
  • Page 54 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 –...
  • Page 55 Outdoor model MXZ-2F53VFHZ2 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 –...
  • Page 56 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 –...
  • Page 57 Outdoor model MXZ-4F83VFHZ2 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 –...

  • Page 58: Noise Criteria Curves

    NOISE CRITERIA CURVES MXZ-2F42VF MXZ-2F42VF2 MXZ-2F33VF MXZ-2F33VF2 MXZ-2F33VF3 MXZ-2F33VF4 MXZ-2F42VF3 MXZ-2F42VF4 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...
  • Page 59 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F54VF3 MXZ-3F54VF4 MXZ-3F68VF3 MXZ-3F68VF4 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 60 MXZ-4F83VF MXZ-4F83VF2 MXZ-5F102VF MXZ-5F102VF2 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...
  • Page 61 MXZ-2F53VFHZ MXZ-2F53VFHZ2 MXZ-4F83VFHZ MXZ-4F83VFHZ2 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...

  • Page 62: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MXZ-2F33VF MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH Unit: mm MXZ-2F33VF2 MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F33VF3 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 MXZ-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 1.Installation space OBH790P...
  • Page 63 MXZ-3F54VF MXZ-3F68VF Unit: mm MXZ-3F54VF2 MXZ-3F68VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-3F54VF4 MXZ-3F68VF4 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 64 MXZ-4F72VF Unit: mm MXZ-4F72VF2 MXZ-4F80VF2 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-4F72VF4 MXZ-4F80VF4 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 65 MXZ-4F83VF MXZ-4F83VF2 Unit: mm Air in Air in Air out Air in OBH790P...
  • Page 66 MXZ-5F102VF MXZ-5F102VF2 Unit: mm Air in Air in Air out Air in OBH790P...

  • Page 67: Service Space

    MXZ-6F120VF2 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 Liquid pipe : Ø6.35(flared)1/4 E unit connection...
  • Page 68 MXZ-2F53VFHZ MXZ-2F53VFHZ2 Unit: mm OBH790P...
  • Page 69 MXZ-4F83VFHZ MXZ-4F83VFHZ2 Unit: mm OBH790P...

  • Page 70: Wiring Diagram

    WIRING DIAGRAM MXZ-2F33VF - MXZ-2F42VF - MXZ-2F53VF - OBH790P...
  • Page 71 MXZ-2F33VF2 - MXZ-2F42VF2 - MXZ-2F53VF2 - OBH790P...
  • Page 72 MXZ-2F33VF2 - MXZ-2F42VF2 - MXZ-2F53VF2 - OBH790P...
  • Page 73 MXZ-2F33VF3 - MXZ-2F42VF3 - MXZ-2F53VF3 - OBH790P...
  • Page 74 MXZ-2F33VF3 - MXZ-2F42VF3 - MXZ-2F53VF3 - OBH790P...
  • Page 75 MXZ-2F33VF4 - MXZ-2F42VF4 - MXZ-2F53VF4 - OBH790P...
  • Page 76 MXZ-2F33VF4 - MXZ-2F42VF4 - MXZ-2F53VF4 - OBH790P...
  • Page 77 MXZ-2F53VFH - OBH790P...
  • Page 78 MXZ-2F53VFH2 - OBH790P...
  • Page 79 MXZ-2F53VFH3 - OBH790P...
  • Page 80 MXZ-2F53VFH4 - OBH790P...
  • Page 81 MXZ-3F54VF - MXZ-3F68VF - OBH790P...
  • Page 82 MXZ-3F54VF2 - MXZ-3F68VF2 - OBH790P...
  • Page 83 MXZ-3F54VF2 - MXZ-3F68VF2 - OBH790P...
  • Page 84 MXZ-3F54VF3 - MXZ-3F68VF3 - OBH790P...
  • Page 85 MXZ-3F54VF3 - MXZ-3F68VF3 - OBH790P...
  • Page 86 MXZ-3F54VF4 - MXZ-3F68VF4 - OBH790P...
  • Page 87 MXZ-3F54VF4 - MXZ-3F68VF4 - OBH790P...
  • Page 88 MXZ-4F72VF - OBH790P...
  • Page 89 MXZ-4F72VF2 - MXZ-4F80VF2 - OBH790P...
  • Page 90 MXZ-4F72VF2 - MXZ-4F80VF2 - OBH790P...
  • Page 91 MXZ-4F72VF3 - MXZ-4F80VF3 - OBH790P...
  • Page 92 MXZ-4F72VF3 - MXZ-4F80VF3 - OBH790P...
  • Page 93 MXZ-4F72VF4 - MXZ-4F80VF4 - OBH790P...
  • Page 94 MXZ-4F72VF4 - MXZ-4F80VF4 - OBH790P...
  • Page 95 MXZ-4F83VF - OBH790P...
  • Page 96 MXZ-4F83VF - OBH790P...
  • Page 97 MXZ-4F83VF2 - OBH790P...
  • Page 98 MXZ-4F83VF2 - OBH790P...
  • Page 99 MXZ-5F102VF - OBH790P...
  • Page 100 MXZ-5F102VF - OBH790P...
  • Page 101 MXZ-5F102VF2 - OBH790P...
  • Page 102 MXZ-5F102VF2 - OBH790P...
  • Page 103 MXZ-6F120VF2 - OBH790P...
  • Page 104 MXZ-6F120VF2 - OBH790P...
  • Page 105 MXZ-6F122VF - OBH790P...
  • Page 106 MXZ-6F122VF - OBH790P...
  • Page 107 MXZ-2F53VFHZ - OBH790P...
  • Page 108 MXZ-2F53VFHZ2 - OBH790P...
  • Page 109 MXZ-4F83VFHZ - OBH790P...
  • Page 110 MXZ-4F83VFHZ2 - OBH790P...

  • Page 111: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM MXZ-2F33VF Unit: mm MXZ-2F33VF2 MXZ-2F33VF3 MXZ-2F33VF4 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...
  • Page 112 MXZ-2F42VF MXZ-2F53VF MXZ-2F53VFH Unit: mm MXZ-2F42VF2 MXZ-2F53VF2 MXZ-2F53VFH2 MXZ-2F42VF3 MXZ-2F53VF3 MXZ-2F53VFH3 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 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...
  • Page 113 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 MXZ-3F54VF4 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...
  • Page 114 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-3F68VF4 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...
  • Page 115 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 MXZ-4F72VF4 Unit: mm MXZ-4F80VF2 MXZ-4F80VF3 MXZ-4F80VF4 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...
  • Page 116 MXZ-4F83VF MXZ-4F83VF2 Unit: mm 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 117 MXZ-5F102VF MXZ-5F102VF2 Unit: mm 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 118 MXZ-6F120VF2 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...
  • Page 119 MXZ-2F53VFHZ MXZ-2F53VFHZ2 Unit: mm 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...
  • Page 120 MXZ-4F83VFHZ MXZ-4F83VFHZ2 Unit: mm 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 Stop Valve Φ9.52 Outdoor...

  • Page 121: Pumping Down

    Method of Charging refrigerant ■MXZ-3F54VF/3F68VF/4F72VF Indoor unit Connection Piping Total Pre charge refrigerant number of specific I/U length 0.0 kg 1.4 kg ■MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 ■MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 ■MXZ-3F54VF4/3F68VF4/4F72VF4/4F80VF4 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...

  • Page 122: 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-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 MXZ-4F83VF MXZ-5F102VF MXZ-6F120VF2 MXZ-4F83VF2 MXZ-5F102VF2 MXZ-6F122VF MXZ-2F53VFHZ MXZ-4F83VFHZ MXZ-2F53VFHZ2 MXZ-4F83VFHZ2 The standard specifications apply only to the operation of the air conditioner under normal conditions.
  • Page 123 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 MXZ-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 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...
  • Page 124 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 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 125 MXZ-4F83VF MXZ-4F83VF2 MXZ-5F102VF MXZ-5F102VF2 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...
  • Page 126 MXZ-6F120VF2 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 127 MXZ-2F53VFHZ MXZ-2F53VFHZ2 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...
  • Page 128 MXZ-4F83VFHZ MXZ-4F83VFHZ2 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 129 9-2. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY (single operation) MXZ-2F33VF MXZ-2F33VF2 MXZ-2F33VF3 MXZ-2F33VF4 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 130 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 MXZ-2F42VF4 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>Capacity <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Total input <HEAT>Total input...
  • Page 131 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 MXZ-2F42VF4 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-2F53VF4 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 MXZ-2F53VFH4 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...
  • Page 132 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VF4 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 MXZ-2F53VFH4 22-class unit <COOL>Total input <HEAT>Total input <COOL>Capacity <HEAT>Capacity Frequency Frequency Frequency Frequency 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...
  • Page 133 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 MXZ-3F54VF4 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...
  • Page 134 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 MXZ-3F54VF4 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...
  • Page 135 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 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...
  • Page 136 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-3F68VF4 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...
  • Page 137 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 MXZ-4F72VF4 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...
  • Page 138 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 MXZ-4F72VF4 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...
  • Page 139 MXZ-4F80VF2 MXZ-4F80VF3 MXZ-4F80VF4 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 140 MXZ-4F80VF2 MXZ-4F80VF3 MXZ-4F80VF4 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 141 MXZ-4F83VF MXZ-4F83VF2 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...
  • Page 142 MXZ-4F83VF MXZ-4F83VF2 35-class unit <COOL>Capacity <HEAT>Total input <COOL>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...
  • Page 143 MXZ-5F102VF MXZ-5F102VF2 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 <HEAT>Capacity <HEAT>Total input <COOL>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity...
  • Page 144 MXZ-5F102VF MXZ-5F102VF2 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...
  • Page 145 MXZ-6F120VF2 MXZ-6F122VF 15-class unit <COOL>Capacity <HEAT>Total input <COOL>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 <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 22-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity...
  • Page 146 MXZ-6F120VF2 MXZ-6F122VF 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...
  • Page 147 MXZ-2F53VFHZ MXZ-2F53VFHZ2 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...
  • Page 148 MXZ-2F53VFHZ MXZ-2F53VFHZ2 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 <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency OBH790P...
  • Page 149 MXZ-4F83VFHZ MXZ-4F83VFHZ2 15-class unit <COOL>Capacity <HEAT>Total input <COOL>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...
  • Page 150 MXZ-4F83VFHZ MXZ-4F83VFHZ2 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 <COOL>Total input <HEAT>Capacity <HEAT>Total input Frequency Frequency Frequency Frequency 60-class unit <COOL>Capacity <COOL>Total input <HEAT>Capacity...
  • Page 151 9-3. HOW TO OPERATE FIXED-FREQUENCY OPERATION <Test run operation> 1. Press the 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 152 MXZ-2F42VF MXZ-2F42VF2 MXZ-2F42VF3 MXZ-2F33VF4 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 153 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VF4 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 MXZ-2F53VFH4 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 (%)
  • Page 154 MXZ-3F54VF MXZ-3F54VF2 MXZ-3F54VF3 MXZ-3F54VF4 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...
  • Page 155 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-3F68VF4 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 MXZ-4F72VF4 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 (%)
  • Page 156 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-3F68VF4 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 MXZ-4F72VF4 60-class unit (MPa[Gauge]) 30Hz 30Hz Ambient temperature ( ) Ambient temperature ( ) Ambient humidity (%) Ambient humidity (%) MXZ-4F80VF2 MXZ-4F80VF3 MXZ-4F80VF4 18-class unit 15-class unit (MPa[Gauge]) (MPa[Gauge]) 30Hz 30Hz 30Hz 30Hz (°C) (°C) (°C)
  • Page 157 MXZ-4F80VF2 MXZ-4F80VF3 MXZ-4F80VF4 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 158 MXZ-4F83VF MXZ-4F83VF2 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])
  • Page 159 MXZ-5F102VF MXZ-5F102VF2 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])
  • Page 160 MXZ-6F120VF2 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])
  • Page 161 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 MXZ-2F53VFHZ2 15-class unit 18-class unit (MPa[Gauge])
  • Page 162 MXZ-2F53VFHZ MXZ-2F53VFHZ2 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 MXZ-4F83VFHZ2 18-class unit 15-class unit...
  • Page 163 MXZ-4F83VFHZ MXZ-4F83VFHZ2 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 (%) 71-class unit 60-class unit (MPa[Gauge])
  • Page 164 (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 MXZ-2F33VF4 15-class unit 18-class unit 20-class unit 58Hz 58Hz 58Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( )
  • Page 165 MXZ-2F53VF MXZ-2F53VF2 MXZ-2F53VF3 MXZ-2F53VF4 MXZ-2F53VFH MXZ-2F53VFH2 MXZ-2F53VFH3 MXZ-2F53VFH4 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...
  • Page 166 MXZ-3F68VF MXZ-3F68VF2 MXZ-3F68VF3 MXZ-3F68VF4 MXZ-4F72VF MXZ-4F72VF2 MXZ-4F72VF3 MXZ-4F72VF4 15-class unit 22-class unit 18-class unit 20-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...
  • Page 167 MXZ-4F80VF2 MXZ-4F80VF3 MXZ-4F80VF4 60-class unit 36Hz Ambient temperature ( ) MXZ-4F83VF MXZ-4F83VF2 15-class unit 18-class unit 20-class unit 22-class unit 68Hz 68Hz 68Hz 68Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit...
  • Page 168 MXZ-5F102VF MXZ-5F102VF2 15-class unit 18-class unit 20-class unit 22-class unit 68Hz 68Hz 68Hz 68Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit 50-class unit 68Hz 68Hz 68Hz 68Hz Ambient temperature ( )
  • Page 169 MXZ-6F120VF2 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 ( ) 25-class unit 35-class unit 42-class unit 50-class unit 54Hz 54Hz 54Hz 54Hz Ambient temperature ( )
  • Page 170 MXZ-2F53VFHZ MXZ-2F53VFHZ2 15-class unit 18-class unit 20-class unit 22-class unit 68Hz 68Hz 68Hz 68Hz Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) Ambient temperature ( ) 25-class unit 35-class unit 42-class unit 50-class unit 68Hz 68Hz 68Hz 68Hz Ambient temperature ( )

  • Page 171: 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-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 Relation between main sensor and actuator Actuator Sensor Purpose Outdoor...

  • Page 172: 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-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 MXZ-4F83VF MXZ-5F102VF MXZ-6F120VF2 MXZ-4F83VF2 MXZ-5F102VF2 MXZ-6F122VF MXZ-2F53VFHZ MXZ-4F83VFHZ MXZ-2F53VFHZ2 MXZ-4F83VFHZ2 11-1.
  • Page 173 11-2. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT) With this function, once the operation mode is locked to either COOL/DRY mode or HEAT mode, the air conditioner operates in that mode only. Changing the setting is required to activate this function. Explain about this function to your customers and ask them whether they want to use it.
  • Page 174 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 MXZ-4F83VF MXZ-5F102VF MXZ-6F120VF2 MXZ-4F83VF2 MXZ-5F102VF2 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 175 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 176 11-6. AUTOMATIC LINE CORRECTING <MXZ-2F33VF/2F42VF/2F53VF/2F53VFH, MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2, MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3, MXZ-2F33VF4/2F42VF4/2F53VF4/2F53VFH4> 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, MXZ-2F33VF4/2F42VF4/2F53VF4/2F53VFH4> 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 177 <MXZ-3F54VF/3F68VF/4F72VF, MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2, MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3, MXZ-4F83/5F102/6F122VF, MXZ-2F53/4F83VFHZ MXZ-3F54VF4/3F68VF4/4F72VF4/4F80VF4, > MXZ-4F83/5F102/6F120VF2, MXZ-2F53/4F83VFHZ2 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.
  • Page 178 11-7. 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 179: 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-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 MXZ-4F83VF MXZ-5F102VF MXZ-6F120VF2 MXZ-4F83VF2 MXZ-5F102VF2 MXZ-6F122VF MXZ-2F53VFHZ MXZ-4F83VFHZ MXZ-2F53VFHZ2 MXZ-4F83VFHZ2 12-1.
  • Page 180 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 181 3. Table of outdoor unit failure mode recall function NOTE: Blinking patterns of this mode differ from the ones of Troubleshooting check table (12-4). MXZ-2F33/42/53VF/VF2/VF3/VF4, MXZ-2F53VFH/VFH2/VFH3/VFH4 Upper or LED indication Indoor/ left lamp of (Outdoor P.C. board) outdoor OPERATION Abnormal point unit failure LED 1 LED 2...
  • Page 182 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 183 NOTE: Blinking patterns of this mode differ from the ones of Troubleshooting check table (12-4.). MXZ-3F, 4F, 5F, 6F, MXZ-2F53VFHZ/VFHZ2, MXZ-4F83VFHZ/VFHZ2 LED indication The left lamp of Indoor/out- (Outdoor P.C. OPERATION Abnormal point door unit fail- Condition Remedy board) INDICATOR lamp (Failure mode/protection) ure mode (Indoor unit)
  • Page 184 LED indication The left lamp of Indoor/out- (Outdoor P.C. OPERATION Abnormal point door unit fail- Condition Remedy board) INDICATOR lamp (Failure mode/protection) ure mode (Indoor unit) recall function LED1 LED2 11-time blink Communication error 6 times Communication error occurs between the between P.C.
  • Page 185 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 186 12-4. TROUBLESHOOTING CHECK TABLE MXZ-2F33/42/53VF/VF2/VF3/VF4, MXZ-2F53VFH/VFH2/VFH3/VFH4 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 187 Indication Abnormal point / Symptom Condition Remedy Condition LED1(Red) LED2(Yellow) ‘Outdoor unit stops and • Reconnect compressor connector. restarts The compressor does not synchronize with • Refer to 12-6. "How to check inverter/ 10 times Not lit Compressor 3 minutes the operating power.
  • Page 188 MXZ-3F, 4F, 5F, 6F, MXZ-2F53VFHZ/VFHZ2, MXZ-4F83VFHZ/VFHZ2 Indication Abnormal point / Symptom Condition Remedy Condition LED1(Red) LED2(Yellow) The indoor unit detects an abnormality in the • Refer to 12-6. "Check of LEV". Once LEV and drain pump LEV and drain pump. •...
  • Page 189 Indication Abnormal point / Symptom Condition Remedy Condition LED1(Red) LED2(Yellow) Fin temperature The fin temperature exceeds during operation. protection •Check refrigerant circuit and refrigerant amount. 4 times Not lit •Refer to 12-6. "Check of outdoor fan motor". P.C. board temperature The P.C.
  • Page 190 Indication Abnormal point / Symptom Condition Remedy Condition LED1(Red) LED2(Yellow) • Check the connecting wire between M-NET Outdoor unit M-NET communication M-NET adapter P.C. board detects an abnormality 11 times adapter P.C. board and outdoor control P.C. operates. error in the communication error. board, or terminal block.
  • Page 191 12-5. TROUBLESHOOTING 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-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 MXZ-4F83VF MXZ-5F102VF MXZ-6F122VF MXZ-4F83VF2 MXZ-5F102VF2 MXZ-6F120VF2...
  • Page 192 Part name Check method and criterion Figure Measure the resistance with a multimeter. (Part temperature : -10°C - 40°C) Normal MXZ-2F33VF/VF2/VF3/VF4 MXZ-3F54VF/VF2/VF3/VF4 MXZ-2F42VF/VF2/VF3/VF4 MXZ-3F68VF/VF2/VF3/VF4 MXZ-2F53VF/VF2/VF3/VF4 MXZ-4F72VF/VF2/VF3/VF4 MXZ-2F53VFH/VFH2/VFH3/VF4 MXZ-4F80VF2/VF3/VF4 R.V. coil 1.20 kΩ - 1.56 kΩ 1.26 kΩ - 1.62 kΩ Normal MXZ-4F83VF/VF2 MXZ-6F120VF2...

  • Page 193: Troubleshooting Flow

    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 MXZ-2F33VF4/2F42VF4/2F53VF4/2F53VFH4 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 194 • 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 195 MXZ-3F54VF/3F68VF/4F72VF MXZ-4F83/5F102/6F122VF MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 MXZ-2F53/4F83VFHZ MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 MXZ-4F83/5F102/6F120VF2 MXZ-3F54VF4/3F68VF4/4F72VF4/4F80VF4 MXZ-2F53/4F83VFHZ2 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 196 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 MXZ-2F33VF4/2F42VF4/2F53VF4/2F53VFH4 • When cooling operation does not work, 1. Disconnect the lead wire leading to the compressor. 2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in COOL mode.
  • Page 197 MXZ-3F54VF/3F68VF/4F72VF MXZ-4F83/5F102/6F122VF MXZ-3F, 4F, 5F, 6F Connector MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 MXZ-2F53/4F83VFHZ 2F53/4F83VFHZ MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 MXZ-4F83/5F102/6F120VF2 CNAC Outdoor control P.C. MXZ-3F54VF4/3F68VF4/4F72VF4/4F80VF4 MXZ-2F53/4F83VFHZ2 CN712 board • When cooling operation does not work, Outdoor power P.C. CNAC2 board 1. Disconnect the lead wire leading to the compressor. 2.
  • Page 198 • When cooling, heat exchanger of non-operating indoor unit frosts. • When heating, non-operating indoor unit gets warm. Check of LEV Turn ON the power supply to the outdoor unit after MXZ-3F, 4F, 5F, 6F Connector MXZ-2F 2F53/4F83VFHZ checking LEV coil is mounted to the LEV body securely. CN724 Inverter ―...
  • Page 199 • 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 200 • When thermistor is abnormal. Check of outdoor thermistors Disconnect the connector in the following table and Replace the thermistor except RT64. measure the resistance of the thermistor to check If RT64 is abnormal, replace the outdoor power Abnormal whether the thermistor is normal or not. (Refer to 12-7.) P.C.
  • Page 201 • Fan motor does not operate or stops operating shortly after starting the operation. Check of outdoor fan motor MXZ-2F Connector MXZ-2F33VF/2F42VF/2F53VF/2F53VFH MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2 CN931 Inverter P.C. board CN932 MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3 MXZ-2F33VF4/2F42VF4/2F53VF4/2F53VFH4 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 202 MXZ-3F54VF/3F68VF/4F72VF MXZ-4F83/5F102/6F122VF MXZ-3F, 4F, 5F, 6F MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 MXZ-2F53/4F83VFHZ Connector 2F53/4F83VFHZ MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 MXZ-4F83/5F102/6F120VF2 Outdoor control MXZ-3F54VF4/3F68VF4/4F72VF4/4F80VF4 MXZ-2F53/4F83VFHZ2 CNF1 P.C. board Disconnect CNF1 and measure the resistance of the outdoor fan motor. Model name of fan motor SIC-71XX-XXXX-X, SIC-81XX-XXXX-X Is the resistance of outdoor fan motor Replace the outdoor fan motor.
  • Page 203 • When the operation frequency does not go up from the lowest frequency. Check of HPS MXZ-3F, 4F, 5F, 6F Connector 2F53/4F83VFHZ MXZ-3F54VF/3F68VF/4F72VF MXZ-4F83/5F102VF MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2 MXZ-2F53/4F83VFHZ Outdoor control CN63H P.C. board MXZ-3F54VF3/3F68VF3/4F72VF3/4F80VF3 MXZ-4F83/5F102VF2 MXZ-3F54VF4/3F68VF4/4F72VF4/4F80VF4 MXZ-2F53/4F83VFHZ2 1. Disconnect the connector CN63H in the outdoor control P.C. board. 2.
  • Page 204 Check of outdoor refrigerant circuit MXZ-2F33VF/2F42VF/2F53VF/2F53VFH MXZ-2F33VF2/2F42VF2/2F53VF2/2F53VFH2 MXZ-2F33VF3/2F42VF3/2F53VF3/2F53VFH3 MXZ-2F33VF4/2F42VF4/2F53VF4/2F53VFH4 MXZ-6F120VF2/6F122VF 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 205 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 206 MXZ-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 Back side of unit Smoothing capacitor 220-230-240 V AC 280 - 370 V DC Heater (CN722) MXZ-2F53VFH4 (C61, C62, C63) (LD66A, LD70) (DB61(+), (-)) R.V. coil/21S4 (CN721) FUSE (F801) FUSE (F701) T3.15AL250V T3.15AL250V 220-230-240 V AC (X64 , LD66B) Connect to outdoor...
  • Page 207 2. Outdoor control P.C. board Defrost thermistor (RT61) Ambient temperature thermistor (RT65) MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF Outdoor heat exchanger temperature thermistor (RT68) MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 Serial signal 12 ~ 24 V Room B Room D 220 - 230 - 240 V AC Room A...
  • Page 208 MXZ-4F83VF MXZ-4F83VF2 Defrost thermistor (RT61) Ambient temperature thermistor (RT65) MXZ-5F102VF MXZ-5F102VF2 Outdoor heat exchanger temperature thermistor (RT68) MXZ-2F53VFHZ MXZ-2F53VFHZ2 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)
  • Page 209 MXZ-6F120VF2 MXZ-6F122VF Defrost thermistor (RT61) Ambient temperature thermistor (RT65) MXZ-4F83VFHZ MXZ-4F83VFHZ2 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)
  • Page 210 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 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 CN151 Signal transmission 15 V (To Outdoor control P.C. board) 5 V DC pulse wave 15 V Output to drive compressor CN171 Fin temperature thermistor CN152...
  • Page 211 MXZ-4F83VF MXZ-4F83VF2 MXZ-5F102VF MXZ-5F102VF2 MXZ-2F53VFHZ MXZ-2F53VFHZ2 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...
  • Page 212 MXZ-6F120VF2 MXZ-6F122VF MXZ-4F83VFHZ MXZ-4F83VFHZ2 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.
  • Page 213 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 MXZ-2F33VF4 MXZ-2F42VF4 MXZ-2F53VF4 MXZ-2F53VFH4 Fin temperature thermistor (RT64) To inverter P.C. board (CN936) 0 10 20 30 40 50 60 70 80 (°C) LED1 LED2 Temperature...

  • Page 214: 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 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 215: Operating Procedure

    OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the inverter assembly and the inverter P.C. Photo 4 board (1) Remove the service panel, the top panel and the cabinet Screws of the heat sink (Refer to section 1). support and the separator Inverter (2) Disconnect the power supply and indoor/outdoor connecting assembly wire and remove the back panel (Refer to section 1).
  • Page 216 OPERATING PROCEDURE PHOTOS/FIGURES 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 217 13-2. MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF MXZ-3F54VF2 MXZ-3F68VF2 MXZ-4F72VF2 MXZ-4F80VF2 MXZ-3F54VF3 MXZ-3F68VF3 MXZ-4F72VF3 MXZ-4F80VF3 MXZ-3F54VF4 MXZ-3F68VF4 MXZ-4F72VF4 MXZ-4F80VF4 NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the cabinet and the panels Photo 1 (1) Remove the screws of the service panel, and remove the service panel.
  • Page 218 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the outdoor control P.C. board, the out- Photo 4 door power P.C. board and the reactor Electrical box (1) Remove the service panel (Photo 1). Catch of the electrical assembly box assembly (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
  • Page 219 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the fan motor Photo 8 (1) Remove the service panel (Photo 1). Screws of the outdoor fan motor Sound proof felt *1 (2) Disconnect the power supply and indoor/outdoor connecting wire. (3) Remove the top panel, the cabinet, and the back panel (Photo 1, 2, 3).
  • Page 220 OPERATING PROCEDURE PHOTOS/FIGURES 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 221 13-3. MXZ-4F83VF MXZ-4F83VF2 MXZ-5F102VF MXZ-5F102VF2 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 and remove the top panel.
  • Page 222 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the outdoor control P.C. board, the reactor Photo 5 and the outdoor power P.C. board Catches of the PB cover (1) Remove the service panel and the top panel (Refer to sec- tion 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
  • Page 223 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the fan motor Photo 8 (1) Remove the service panel, the top panel and the front Propeller fan 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 224 OPERATING PROCEDURE PHOTOS/FIGURES 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 section (2) Disconnect the power supply and indoor/outdoor connect- ing wire, and remove the back panel.
  • Page 225 13-4. MXZ-2F53VFHZ MXZ-2F53VFHZ2 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 and remove the top panel.
  • Page 226 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the outdoor control P.C. board, the reactor Photo 5 and the outdoor power P.C. board (1) Remove the service panel and the top panel (Refer to sec- Catches of the PB cover tion 1). (2) Disconnect the power supply and indoor/outdoor connect- ing wire.
  • Page 227 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the fan motor Photo 8 Screw of (1) Remove the service panel, the top panel and the front Propeller fan the electrical parts panel (Refer to section 1). Screws of (2) Disconnect the power supply and indoor/outdoor connect- the outdoor fan motor ing wire.
  • Page 228 OPERATING PROCEDURE PHOTOS/FIGURES 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 section 4-way valve (2) Disconnect the power supply and indoor/outdoor connect- ing wire, and remove the back panel.
  • Page 229 13-5. MXZ-4F83VFHZ MXZ-4F83VFHZ2 NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the panels Photo 1 Screws of the top panel (1) Remove the screws fixing the service panel, and remove the service panel. (2) Remove the screws fixing the top panel, remove the top panel.
  • Page 230 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the outdoor control P.C. board, the reactor Photo 4 Screw of 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 231 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the fan motor Photo 9 Screws of (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 232 OPERATING PROCEDURE PHOTOS/FIGURES 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 233 13-6. MXZ-6F122VF MXZ-6F120VF2 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 234 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the outdoor control P.C. board, the reactor Screw of Photo 4 and the outdoor power P.C. board the electrical parts (1) Remove the service panel, the top panel and the front panel (Refer to section 1). (2) Disconnect the power supply cord and indoor/outdoor con- necting wire.
  • Page 235 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). VB fixture Screws of the outdoor fan motor (2) Disconnect the power supply cord and indoor/outdoor con- necting wire.
  • Page 236 Compressor nuts Expansion valves HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2018 MITSUBISHI ELECTRIC CORPORATION Issued: Nov. 2024. No.OBH790 REVISED EDITION-P Issued: Aug. 2024. No.OBH790 REVISED EDITION-N Issued: Feb. 2024. No.OBH790 REVISED EDITION-M Issued: Dec. 2022. No.OBH790 REVISED EDITION-L Issued: Jun.
  • Page 237 Related Links Model Number: MXZ-4F72VF4 Multi Split Systems Combination Tables MXZ-2F 3F 4F 5F 6F Parts List (OBB790L) MXZ-2F 3F 4F 5F 6F Service Manual (OBH790P) MXZ-2F3F4F5F6F Service manual(OBH790N) MXZ-3F54-3F68 and 4F72VF4 Installation Manual (VG79N210H02) MXZ-3F54-68,4F72VF4 Declaration of Conformity...

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