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

1. Compare the model plug PL4 with the one shown on the rating plate; replace PL4 if wrong.
2. Reset power to clear the lockout.
3. If the solid LED returns after reset, replace the furnace control.

Models that show this code

6 models in ICP (F/G)9MAE Modulating Furnace

Other codes on the same units

• 5 Abnormal flame-proving signal
• 6 Ignition proving failure
• 6+1 Ignition lockout
• 7 Limit circuit lockout
• 8 Gas heating lockout
• 9 Medium/high pressure switch or PSR relay did not close or reopened
• 10 Line voltage polarity
• LED off Amber status LED off - no power / blown 3 A fuse