HVACopediaICP · Furnace
LED steady ON Amber LED on solid - control lockout / wrong model plug
What the control is telling you
A solid (non-flashing) amber LED means the control has locked itself out. Flowchart says it auto-resets after 1 hour.
Applies to: ICP F9MAE / G9MAE modulating variable-speed condensing gas furnaces (060, 080, 100, 120 kBtu/h)
Likely causes
- Wrong or missing model plug PL4
- Flame sense circuit failure
- Gas valve relay stuck open
- Software check error
Test and repair steps
- Compare the model plug PL4 with the one shown on the rating plate; replace PL4 if wrong.
- Reset power to clear the lockout.
- If the solid LED returns after reset, replace the furnace control.
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Source: ICP (F/G)9MAE Service and Technical Support Manual 440 04 4700 00, Figure 16 Troubleshooting Chart, p.33. Summarized in our own words; check the original manual for your model.
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For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.