Lennox MPA018S4S-1P

Lennox Mini-Split Service Manual / Page 211
EE Flow Chart
Power off, then restart the unit 3 minutes
later. Is it still displaying the error code?
If the water-level switch is inserted well?
Yes
No
No
Insert the water-level
switch well.
If the water-level switch is broken?
Replace the water pump, If malfunction is
still not solved.
Replace the indoor main PCB.
Yes
Replace the water-level
switch.