Goodman GMSS920803BN Furnace Error Codes

Single Stage Gas Furnace | Control Board: Integrated Control Module

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Disclaimer

This information is for reference purposes only and does not guarantee accuracy or completeness. Always consult your owner's manual and a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk.

All Error Codes

Code	Name	Severity	DIY?
NO LED	No power to furnace or internal control fault	High	✗ Call a pro	→
STEADY ON	Normal operation - no call for heat	Info	—	→
1 FLASH	System lockout - ignition failure	High	✗ Call a pro	→
2 FLASHES	Pressure switch stuck closed	High	✗ Call a pro	→
3 FLASHES	Pressure switch stuck open	High	✗ Call a pro	→
4 FLASHES	Open limit switch circuit	High	✗ Call a pro	→
5 FLASHES	Flame sensed when no flame should be present	Critical	✗ Call a pro	→
6 FLASHES	Open rollout switch or open control board fuse	Critical	✗ Call a pro	→
7 FLASHES	Low flame sense signal	Medium	✗ Call a pro	→
8 FLASHES	Igniter relay fault	High	✗ Call a pro	→
CONTINUOUS FLASH	115 Volt AC power polarity reversed	High	✗ Call a pro	→

How to Read the Error Code

Single diagnostic LED visible through observation window in blower access door. LED flashes a specific number of times, then pauses, and repeats. Count the number of flashes between pauses to identify the fault code.

About This Model

The Goodman GMSS920803BN is a single stage gas furnace using the Integrated Control Module-series integrated furnace control (IFC) board.