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GMH95 / GCH9 - Lockout Codes

Article ID: 256
Last updated: 13 Jan, 2026

Goodman Gas Furnace: GMH95 / GCH9

Re: Lockout Codes

# of Flashes Description
Off No Power or Faulty Control
On Normal Operation
1 Ignition lockout (3 failed tries) - 1hr Auto Reset
2 Pressure switch stuck closed
3 Pressure switch stuck open
4 Limit switch open (auto reset)
5 Flame present with gas valve off
6 Rollout switch open or Low Voltage fuse blown
7 Low flame signal
8 Check igniter or Improper grounding
Rapid Flash Wrong polarity
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Article ID: 256
Last updated: 13 Jan, 2026
Revision: 6
Access: Public
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