Carrier 38QUS012DS - Page 63

10
7 Water-level alarm malfunction diagnosis and solution
Error Code
EE
Malfunction decision conditions
If the sampling voltage is not 5V, the LED will display the failure.
Supposed causes
● Wiring mistake
● Water-level switch faulty
● Water pump faulty
●
Indoor PCB faulty
If the water-level switch
is inserted well?
If the water-level switch
is inserted well?
No
Insert the water-level switch well
Insert the water-level switch well
If the water-level switch
is broken?
If the water-level switch
is broken?
Yes
Replace the water-level switch
Replace the water-level switch
Replace the water pump, If
malfunction is still not
solved
Replace the water pump, If
malfunction is still not
solved
Yes
No
Yes
Replace the indoor main PCB
Replace the indoor main PCB
Power off, then restart the unit 3 minutes
later. Is it still displaying the error code?
Power off, then restart the unit 3 minutes
later. Is it still displaying the error code?
Yes