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Error code reference
Amana Furnace Error Codes
11 error codes documented with diagnostic procedures.
Have your model number? Get codes specific to your unit.
1 FlashSystem lockout2 FlashesPressure switch stuck closed3 FlashesPressure switch stuck open4 FlashesOpen limit control or thermal protection device5 FlashesOpen rollout control6 FlashesReversed polarity7 FlashesLow flame sense signal8 FlashesPressure switch opened five times during a single call for heat (50A55/HSI-2 controls) or…9 FlashesPrimary or auxiliary limit opened five times during a single call for heat (HSI-2…Continuous FlashingFlame sensed with no call for heatContinuous LightInternal control failure
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Step-by-step tests, expected values, wiring diagram references, and verified part numbers.
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