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Trane appliance error codes

Search 2 Trane diagnostic guides across 2 appliance types. Start with the appliance category or search the code or symptom directly.

Trane appliance categories

Trane Furnace

1 guide

Trane Heat Pump

1 guide

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2 guides found

3 red light flashes on a Trane furnace board indicate the pressure switch circuit is open when it should be closed during combustion startup.

2 red flashes indicate system lockout due to multiple failed ignition attempts or loss of flame signal.