York Gas Furnaces: PMPD
Re: Diagnostic/Lockout Codes
This York gas furnaces has a control board inside the furnace blower compartment that will flash a diagnostic code that shows the operating status of the furnace.
Diagnostic Codes: | ||
Steady On Red | Control failure |
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1 Red | Ignition Lockout |
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2 Red | Pressure switch stuck closed |
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3 Red | Pressure switch stuck open |
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4 Red | Limit switch open |
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5 Red | Rollout switch open |
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