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FDT125VNPWVH
Mitsubishi FDT125VNPWVH User Manual
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(Split system, air to air heat pump type)
Manual No.'22
・
For Australian market only
PAC-SM-412
STANDARD INVERTER PACKAGED
AIR-CONDITIONERS
SE
R
VI
CE MAN
UAL
CE
IL
INI
NG
CA
SS
ETTE
-4
WAY
TYP
E
FDT125VNPWVH
DUCT CONNECTED-HIGH STATIC
PRESSURE TYPE
FDUA125VNPWVH
DUCT CONNECTED-HIGH STATIC
PRESSURE TYPE
FDU125VNPWVH
CEILING SUSPENDED TYPE
FDE125VNPWVH
2
Table of Contents
COVER
1
TABLE OF CONTENTS
2
1. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER
3
1.1 Remote control (Option parts)
3
1.2 Operation control function by the wired remote contr
6
1.3 Operation control function by the indoor control
9
1.4 Operation control function by the outdoor control
28
(1) Compressor speed
28
(2) Compressor protection start
28
(3) Outdoor fan control
28
(4) Defrost operation
30
(5) Cooling overload protective control
31
(6) Cooling high pressure control
31
(7) Cooling low outdoor air temperature protective control
32
(8) Heating high pressure control
32
(9) Heating overload protective control
33
(10) Heating low outdoor air temperature protective control
33
(11) Compressor overheat protection
33
(12) Current safe
34
(13) Current cut
34
(14) Outdoor unit failure
34
(15) Serial signal transmission error protection
34
(16) Rotor lock
34
(17) Refrigeration cycle system protection
34
(18) Silent mode
35
(19) Broken wire detection on temperature sensor
35
(20) Refrigerant ejection control
35
2. MAINTENANCE DATA
37
2.1 Diagnosing of microcomputer circuit
37
(1) Selfdiagnosis function
37
(2) Troubleshooting procedure
40
(3) Troubleshooting at the indoor unit
40
(4) Troubleshooting at the outdoor unit
45
(5) Outdoor unit control failure diagnosis circuit diagram
48
(6) Check of anomalous operation data with the remote control
51
(7) Power transistor module (Including the driver PCB) inspection procedure
53
(8) Inverter checker for diagnosis of inverter output
54
2.2 Troubleshooting flow
55
(1) List of troubles
55
(2) Troubleshooting
56
2.3 Zone control installation manual (FDU, FDUA series only)
97
3. ELECTRICAL WIRING
111
(1) Indoor units
111
(2) Outdoor unit
115
4. PIPING SYSTEM
116
5
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Mitsubishi FDT125VNPWVH Specifications
General
Brand
Mitsubishi
Model
FDT125VNPWVH
Category
Air Conditioner
Language
English
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