MovinCool CM25 Service Manual - Manual (Page 49)

Repair Section
49
< NOTE >
*1 Shown with the operational status display mode.
When the fan is under the initial settings or in test mode, either the WMC or MWT will be
inoperative, and no self-diagnostic codes will be displayed.
• Verify self-diagnostic codes using the LED on the relay board.
• To erase self-diagnostic codes, (including either the WMC or MWT), open and close the circuit
breaker.
E13
E18 Input overcurrent
Press RESET button.
Reset the power from the circuit
breaker.
E19
Power device temperature
abnormality
E20 DC voltage abnormality
E21
Power device damage
abnormality
E22 Circuit malfunction
Self-Diagnostic
Code
Cause
Alarm Clear Method
Wall Mounted Controller (WMC) Millivolt Wall Thermostat (MWT)
DF *1 Freezing abnormality
Alarm clears automatically. Alarm clears automatically.
IR *1
Evaporator fan motor reverse
rotation abnormality
OR *1
Condenser fan motor reverse
rotation abnormality
Self-Diagnostic
Code
Cause
Alarm Clear Method
User
Mode
Service
Mode
Wall Mounted Controller (WMC) Millivolt Wall Thermostat (MWT)