Mitsubishi FDT71VH User Manual

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'20 • PAC-SM-351
1.2.2 Troubleshooting ow
(1) List of troubles
(a) FDT, FDTC, FDU, FDUM, FDE series
Remote control display Description of trouble Reference page
None Operates but does not cool 81
None Operates but does not heat 82
None Earth leakage breaker activated 83
None Excessive noise/vibration (1/3) 84
None Excessive noise/vibration (2/3) 85
None Excessive noise/vibration (3/3) 86
None Louver motor failure 87
None
Power source system error (Power source to indoor unit control PCB) 88
None Power
source system error (Power source to remote control) 89
INSPECT I/U INSPECT I/U (When 1 or 2 remote controls are connected) 90
INSPECT I/U INSPECT I/U (Connection of 3 units or more remote controls) 91
WAIT
Communication error at initial operation 92-94
None No display 95
E1 Remote control communication circuit error 96
E5 Communication error during operation 97
E6 Indoor heat exchanger temperature sensor anomaly 98
E7 Return air temperature sensor anomaly 99
E8 Heating overload operation 100
E9 Drain trouble 101
E10 Excessive number of connected indoor units (more than 17 units) by controlling with one remote control 102
E11 Address setting error of indoor units 103
E14 Communication error between master and slave indoor units 104
E16 Indoor fan motor anomaly 105
E18 Address setting error of master and slave indoor units 106
E19 Indoor unit operation check, drain pump motor check setting error 107
E20 Indoor fan motor rotation speed anomaly 108
E28 Remote control temperature sensor anomaly 109
E35 Cooling overload operation 110
E36 Discharge pipe temperature error 111
E37 Outdoor heat exchanger temperature sensor anomaly 112
E38 Outdoor air temperature sensor anomaly 113
E39 Discharge pipe temperature sensor anomaly 114
E40 High pressure error (63H1 activated) 115
E41 Power transistor overheat 116
E42 Current cut 117 · 118
E45
Communication error between inverter PCB and outdoor unit control PCB 119
E48 Outdoor fan motor anomaly 120
E49 Low pressure error or low pressure sensor anomaly 121 · 122
E51 Inverter and fan motor anomaly 123
E53 Suction pipe temperature sensor anomaly 124
E54 Low pressure sensor anomaly 125
E57 Insufficient refrigerant amount or detection of service valve closure 126
E59 Compressor startup failure 127 · 128

Mitsubishi FDT71VH Specifications

General

Brand	Mitsubishi
Model	FDT71VH
Category	Air Conditioner
Language	English