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19
Mini-Split Error Codes
ERROR
CODE
EXPLANATION RED YELLOW GREEN NOTES
E1 High Pressure protect 1
E2 Inside Anti-Freeze Protect 2
E3 Low Pressure Protect 3
E4 Compressor Discharge protect 4 6 sec Pause before Flash Sequence
E5 low pressure over current protect 5
E6 indoor-outdoor communication Error 6
E7 Mode conflict 7
E8 high Temp protect 8
E9 cold wind protect 9
E0 AC Voltage Low 10
H6 No Indoor motor feedback 11
F1 room temp sensor open/short 1
F2 Indoor evaporator sensor open/short 2
F3 Outdoor temp sensor open/short 3
F4 Outdoor evaporator sensor open/short 4 6 sec Pause before Flash Sequence
F5 Outdoor sensor open/short 5
F6 Cooling Overload 6
F7 Unused 7
F8 Current Overload 8
F9 Unused 9
F0 Unused 10
H1 Defrost 1
H2 Static duct clean protect 2
H3 compressor overload protect 3
H4 System Abnormal 4 6 sec Pause before Flash Sequence
H5 Mode Protect 5
H6 Unused 6
H7 Synchronize fail 7
H8 Water full protect 8
H9 PTC heating Error 9
HO Heat high temp protect 10
FA Pipe Hot
FH Freeze Protect
Notes: Some Codes may not be available on some units.
Codes will flash prior to any change of state I.E. cool off, cool on, heat off, heat on, power on, etc.
Normal operation for indicator lights is as follows: Constant Red: power on, Constant Yellow: heat on,
Constant Green: cool on.
Heat Mode available for heat pump units only.
