HVACopediaICP · Furnace
6+1 Ignition lockout
What the control is telling you
Failed to ignite and prove flame in 4 tries. Auto-resets after 3 hours. Troubleshoot as code 6.
Applies to: ICP F9MAE / G9MAE modulating variable-speed condensing gas furnaces (060, 080, 100, 120 kBtu/h)
Likely causes
- Same causes as code 6
Test and repair steps
- Reset by cycling 115 V power (or wait 3 hours).
- Follow the code 6 checks gas supply, ground wire, igniter, gas valve 24 V, flame sensor current.
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Source: ICP (F/G)9MAE Service and Technical Support Manual 440 04 4700 00, Figure 16 Troubleshooting Chart, p.34. Summarized in our own words; check the original manual for your model.
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