HVACopedia

ICP · Furnace

6+1 Ignition lockout

High severity ICP (F/G)9MAE Modulating Furnace

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

  1. Reset by cycling 115 V power (or wait 3 hours).
  2. Follow the code 6 checks gas supply, ground wire, igniter, gas valve 24 V, flame sensor current.

Models that show this code

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

G9MAE0601714G9MAE0602120G9MAE0801714G9MAE0802120G9MAE1002122G9MAE1202422

Other codes on the same units

  • 4+2 Inducer motor fault
  • 4+3 Low/medium pressure switch open while medium/high switch closed
  • 5 Abnormal flame-proving signal
  • 6 Ignition proving failure
  • 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

Save it for the next call

Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.

Open the app

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.

Homeowner looking at this code? See what it means for you and when to call a technician.

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.