AD Klima Fan Coil Unit Operation And Installation Manual page 28

Fan Coil Unit One-Way Cassette Type
Not good sensor connection
Sensor error
Sensor broken
Insufficient water level detection
Indoor PCB damaged
Pump error
Pump damaged
Float switch abnormal
*Items marked with * can only be performed by technical person only.
Starting test of the pump
Test float switch for function and mobility
Check the sensor terminal connection or cable connection
Check sensor values if it is broken
Check if drain pan is dirty or blocked, clean the obstacles.
Check PCB and change if broken
Check the pump function and change water pump
Test float switch for function and mobility, change if necessary
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