Movincool CMW30 - Page 52

Repair Section
52
< 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 inoperable,
and no self-diagnostic codes will be displayed.
• Verify self-diagnostic codes using the LED on the relay board.
E13
E18 STI module input over current
Press RESET button, turn off
the circuit breaker, then turn on
the circuit breaker and press
ON/OFF 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
E23 E23
Evaporator fan motor over
rotation abnormality
Self-Diagnostic
Code
Possible 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
Possible Cause
Alarm Clear Method
User
Mode
Service
Mode
Wall Mounted Controller (WMC) Millivolt Wall Thermostat (MWT)