Daikin Furnace Error Codes - Complete Guide

Daikin furnaces in the North American market are built by Goodman (acquired by Daikin) and share their control boards and flash codes with Goodman and Amana. Also covers Goodman, Amana.

All Daikin 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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Daikin Furnace Error Codes - Complete Guide

All Daikin Error Codes

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