Error code reference

York Furnace Error Codes

8 error codes documented with diagnostic procedures.

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1 FlashFlame sensed without a call for heat.2 FlashLow fire pressure switch (1LP) contacts are stuck in the closed position; control must…3 FlashFlame rectification could not be established (applies to both 1st stage and 2nd stage)…4 FlashOpen limit circuit (includes Primary Limit, Auxiliary Limit, and Rollout Switches).6 Flash1LP has opened five times during one call for heat.7 FlashFlame rectification could not be established; flame rectification must be maintained for…8 FlashFlame rectification has been lost 5 times during 1 call for heat after it was recognized…LED on constantlyThe control discovered an internal fault during its self-check procedure; all operations…

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