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Communication fault: gas furnace codes by brand
Two control boards, or a board and its controller, cannot exchange signals.
| Brand | Code | Meaning | What you can do |
|---|---|---|---|
| Carrier | 17.1 | Lost communication with the Bluetooth module | Call a pro |
| Carrier | 19.1 | Lost InteliSense communication with the thermostat | Call a pro |
| Goodman | b1 | Lost communication with the circulator blower motor | Call a pro |
| Goodman | Eb1 | Lost communication with the circulator blower motor | Call a pro |
| Goodman | EbF | Inducer communication error | Call a pro |