24
Table 2. Alert Codes and Troubleshooting
GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat
Alert
Code
Inverter
Flash
Code
Priority
Condition
Actual Displayed
Alert Text
Under dealer
control center >
Notifications
Component or System Operational State and Troubleshooting Tip
How to clear alert code
351
Service
Urgent
AH Electric Heat
Stage 1 Fault
There is an issue with the air handler’s first stage electric heat. Either the pilot relay contacts did
not close or the relay coil in the electric heat section did not energize.
Possible heat section / stage 1 failure.
NOTE:
Air handler will operate on heat pump first stage for the remainder of the heat call.
Automatically clears after fault recovered.
352
Service Soon
AH Electric Heat
Stage 2 Fault
There is a issue with the air handler’s second stage electric heat.
Either the pilot relay contacts did
not close or the relay coil in the electric heat section did not energize.
NOTE:
The air-handler will operate on first stage electric heat until the issue is resolved.
Automatically clears after fault recovered.
353
Service Soon
AH Electric Heat
Stage 3 Fault
There is a issue with the air handler’s third stage electric heat.
Either the pilot relay contacts did
not close or the relay coil in the electric heat section did not energize.
NOTE:
The air-handler will operate on first stage electric heat until the issue is resolved.
Automatically clears after fault recovered.
354
Service Soon
Electric Heat
AH Electric Heat
Stage 4 Fault
There is a issue with the air handler’s fourth stage electric heat.
Either the pilot relay contacts did
not close or the relay coil in the electric heat section did not energize.
NOTE:
The air-handler will operate on first stage electric heat until the issue is resolved.
Automatically clears after fault recovered.
355
Service Soon
AH Electric Heat
Stage 5 Fault
There is an issue with the air handler’s fifth stage electric heat. Either the pilot relay contacts did
not close or the relay coil in the electric heat section did not energize.
NOTE:
The air-handler will operate on first stage electric heat until the issue is resolved.
Automatically clears after fault recovered.
