To Next PageTo Next PageWhat to do if my Goodman GM9S80 fails to operate due to furnace lockout?
If your Goodman Furnace fails to operate due to a furnace lockout caused by an excessive number of ignition retries, failure to establish flame, or loss of flame after establishment, you should locate and correct the gas interruption.
What to do if my Goodman Furnace is not working?
If your Goodman Furnace is not working, it could be due to an open fuse or a short in the low voltage wiring. Replace the fuse or locate and correct the short in the low voltage wiring.
What to do if my Goodman GM9S80 Furnace isn't working, and the integrated control module LED display provides no signal?
If your Goodman Furnace fails to operate and the integrated control module LED display provides no signal, it may be due to no 115 power to furnace or no 24 volt power to integrated control module, a blown fuse, a tripped circuit breaker, or a non-functional integrated control module. Restore high voltage power to furnace and integrated control module. Correct the condition which caused the fuse to open, replace the fuse.
Why is my Goodman GM9S80 Furnace failing to operate?
Your Goodman Furnace may fail to operate due to a problem with the igniter circuit, an improperly connected or shorted igniter, a poor unit ground, or an igniter relay fault on the integrated control module. Check and correct the wiring from the integrated control module to the igniter.
What to do if my Goodman GM9S80 fails to operate due to an open roll out switch?
If your Goodman Furnace fails to operate due to an open roll out switch, check for correct gas pressure.
Why is my Goodman Furnace induced draft blower and circulator blower running continuously?
If the induced draft blower and circulator blower run continuously with no furnace operation, it may be due to flame sensed with no call for heat, a short to ground in the flame sense circuit, a lingering burner flame, or a slow closing gas valve. Correct the short at the flame sensor or in the flame sensor wiring and verify proper operation of gas valve.
What to do if my Goodman GM9S80 isn't working and has a grounding fault?
If your Goodman Furnace fails to operate due to a grounding fault or poor neutral connection, verify the neutral wire connection to the furnace and its continuity to the ground source.
What to do if my Goodman Furnace fails to operate due to Ignitor Open?
If your Goodman Furnace fails to operate due to an open ignitor, check the ignitor wiring and replace the damaged ignitor.
What to do if my Goodman GM9S80 Furnace fails to operate due to Inducer relay Error?
If your Goodman Furnace fails to operate due to an inducer relay error, replace the integrated control board.
What to do if my Goodman Furnace fails to operate due to Pressure switch circuit?
If your Goodman Furnace fails to operate due to a pressure switch circuit that is closed at the start of the heating cycle, pressure switch contacts sticking, or a short in the pressure switch circuit wiring, replace the low stage pressure switch and repair the short in wiring.
General| Type | Gas Furnace |
|---|---|
| Efficiency Rating | 80% AFUE |
| Fuel Type | Natural Gas or Propane |
| Blower Motor | Multi-speed |
| Stages | Single Stage |
| Cabinet Type | Multi-Position |
| Heat Exchanger Material | Aluminized Steel |
| Warranty | 10-Year Parts Limited Warranty, Lifetime Heat Exchanger Limited Warranty |
Covers general safety, ESD precautions, and product application limits.
Guides on checking incoming power, transformer phasing, and wiring continuity.
Guides on checking flame rollout, burners, orifices, gas pressure, and ignitors.
Covers flashback, pressure switch, delayed ignition, and integrated controls.
Guides on checking flame sensor function and integrated ignition controls.
Maps LED status codes to symptoms, faults, and corrective actions.
