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Goodman Furnace Error Codes — Complete Guide

Goodman, Amana, and Daikin are sister brands using the same control board and single-digit LED flash code system. Also covers Amana, Daikin.

All Goodman Error Codes

1 flash with extended pause
Goodman 1 Flash — Lockout Due to Excessive Retries
Locked out after exhausting ignition retry attempts.
2 flashes
Goodman 2 Flashes — Pressure Switch Stuck Closed
Pressure switch stuck closed when inducer is off.
3 flashes
Goodman 3 Flashes — Open Pressure Switch With Inducer On
Pressure switch open during inducer operation — vent or inducer issue.
4 flashes
Goodman 4 Flashes — High Limit Switch Open
High limit switch open — overheating. Usually a dirty filter.
5 flashes
Goodman 5 Flashes — Flame Sensed With Gas Valve Off
Flame detected when gas valve closed — leaky valve.
6 flashes
Goodman 6 Flashes — Roll Out Switch Open (SAFETY)
Flame rollout switch tripped — get a CO safety inspection before reset.
7 flashes
Goodman 7 Flashes — Low Flame Signal
Weak flame sensor signal — usually a dirty sensor.
8 flashes
Goodman 8 Flashes — Igniter Error
Igniter fault — failed or cracked hot surface igniter.
9 flashes
Goodman 9 Flashes — Grounding or Polarity Reversed
Grounding or polarity reversed — wiring issue.

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