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ICP · Furnace troubleshooting

Component self-test

What is going on

Runs inducer, gas valve communication check, igniter and blower to isolate a failed part.

Check in this order

  1. Warning: Door switch held closed exposes live 115 V parts.
  2. Remove blower door and the wire from R on the control.
  3. Turn SW1-6 ON and close the door switch.
  4. Inducer runs at medium speed, control checks gas valve communication, after 15 s the igniter heats for 15 s, then blower runs at mid airflow for 15 s.
  5. Afterwards heartbeat, 2+5, 3+5, 4+1 or 4+2 may flash - see those codes.
  6. Turn SW1-6 OFF and back ON to repeat; when done turn SW1-6 OFF, reconnect R and replace door.

Applies to: ICP F9MAE / G9MAE modulating variable-speed condensing gas furnaces (060, 080, 100, 120 kBtu/h)

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Source: ICP (F/G)9MAE Service and Technical Support Manual 440 04 4700 00, Component Self-Test, p.24. Written in our own words; check the manual for your exact model.

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.