Troubleshooting Flow - Mitsubishi SCM40ZS-S Technical Manual

8.2.2 Troubleshooting flow

(1) List of troubles
Remote control display
None Operates but does not cool.
None Operates but does not heat.
None Earth leakage breaker activated
None Excessive noise/vibration (1/3)
None Excessive noise/vibration (2/3)
None Excessive noise/vibration (3/3)
None Louver motor failure (FDTC and FDE only)
None Power source system error (Power source to indoor control PCB)
None Power source system error (Power source to remote control)
INSPECT I/U INSPECT I/U (When 1 or 2 remote controls are connected)
INSPECT I/U INSPECT I/U (Connection of 3 units or more remote controls)
Communication error at initial operation
WAIT
E1 Remote control communication circuit error
E5 Communication error during operation
E6 Indoor heat exchanger temperature thermistor anomaly
E7 Return air temperature thermistor anomaly
E8 Heating overload operation
E9 Drain trouble (FDTC and FDUM only)
E10 Excessive number of connected indoor units (more than 17 units) by controlling with one remote control
E11 Address setting error of indoor units
E14 Communication error between master and slave indoor units
E16 Indoor fan motor anomaly
E19 Indoor unit operation check, drain motor check setting error
E20 Indoor fan motor rotation speed anomaly
E28 Remote control temperature thermistor anomaly
E35 Cooling high pressure operation
E36 Discharge pipe temperature error
E37 Outdoor heat exchanger temperature sensor anomaly
E38 Outdoor air temperature sensor anomaly
E39 Discharge pipe temperature sensor anomaly
E42 Current cut
E45 Outdoor sub PCB communication error
E47 Active filter voltage error
E48 Outdoor fan motor anomaly
E51 Power transistor anomaly
E53 Suction pipe temperature error
E57 Insufficient refrigerant amount or detection of service valve closure
E58 Current safe stop
E59 Compressor startup failure
E60 Anomalous compressor rotor lock
Description of trouble
232
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'16 • SCM-T-199
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