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TROUBLE INDICATORS
If a problem occurs with the air conditioner, the control panel will display the following codes:
Owner’s manual _18
17. TROUBLESHOOTING
CAUTION:
Have repairs performed by a certified HVAC technician.
Trouble/
Display
Reason
E1
E2
E4
E5
Problem with the room temperature sensor.
Problem with the pipe temperature sensor.
An abnormality in the unit’s system is
affecting the cooling capacity.
Problem with the pump.
Maintenance
Check the room temperature sensor.
Check the pipe temperature sensor.
Check refrigerant. If the air filters
are dirty, remove dust and wash
them with water.
Check the pump’s water level switch
or check if the pump works properly.