93
E9
Error Code Diagnostics
E9 Error Code
Full Water Protection
Possible Causes
1.
Drain line plugged
2.
Faulty condensate pump
3.
Faulty liquid level switch
4.
Faulty main circuit board
Full Water Protection
Is water overflowing?
Check voltage at the
liquid level switch
No
Clear or repair the
drain line
Yes
Replace indoor unit
main board
No
Check the liquid
level switch
Check voltage at the
condensate pump
No
Yes
Replace indoor unit
main board
No
Check condensate
pump wiring
Yes
Yes
Check voltage at the
condensate pump
No
Is the Condensate pump
working properly
Adjust the water
drain pipe
No
Check for kinks or plugged
drain line
Yes
