CodeMeaningSeverityLink
2 FlashPressure switch was closed at the wrong time
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Call a pro soon
→3 FlashPressure-switch circuit did not close
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Call a pro soon
→4 FlashLimit or rollout circuit open
Emergency
Emergency
→5 FlashFlame detected when the gas valve should be off
Emergency
Emergency
→6 FlashIgnition or flame-sense failure
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Call a pro soon
→7 FlashLimit or rollout soft lockout
Emergency
Emergency
→8 FlashPermanent gas-heat lockout
Emergency
Emergency
→9 FlashPressure-switch circuit did not close
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Call a pro soon
→10 FlashPower polarity or grounding fault
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Call a pro soon
→