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DIGITAL CONTROL DIAGNOSTICS
The chart below lists malfunctions and their description.
Indoor air temp sensor open/short
Indoor coil sensor open or short
Outdoor coil sensor open/short
Freeze Guard protection
Indoor coil high temp protection
Outdoor coil high temp protection
Indoor coil freeze protection
Defrost (heat pump type)
Thermostat wiring error
Display ‘F1’, with STATUS light flash
Display ‘F2’, with STATUS light flash
Display ‘F4’, with STATUS light flash
Display ‘FP’, with STATUS light flash
STATUS light flash 8 times and off 3 sec, repeat
STATUS light flash 6 times and off 3 sec, repeat
STATUS light flash 5 times and off 3 sec, repeat
STATUS light flash 7 times and off 3 sec, repeat
STATUS light flash 9 times and off 3 sec, repeat
1
2
3
4
5
6
7
8
9
23