Goodman GCES96 Error Codes
Goodman GCES96 error codes and diagnostic codes (also listed as *CES96, Goodman 96% downflow/horizontal). The GCES96 is a Goodman furnace in the Goodman/Amana *MES9 single-stage series.
Goodman GCES96 error codes list
Troubleshooting the GCES96
- Blower cycles on and off All brands · Furnace
- Blower runs, not enough heat All brands · Furnace
- Blowing cold air All brands · Furnace
- Board shows "flame sensed with no call for heat" All brands · Furnace
- Can't pull oil (distance/lift) All brands · Furnace
- CO in flue / poor combustion numbers All brands · Furnace
- Cold air blast at start / blower never stops All brands · Furnace
- Combustion gas / odour in house, flu-like symptoms All brands · Furnace
- Cycles on limit (not lockout) All brands · Furnace
- Does not start All brands · Furnace
- Flame burns a few seconds then out All brands · Furnace
- Flame conditions table All brands · Furnace
- Heat exchanger leak All brands · Furnace
- High blower-door ACH50 (>3) All brands · Furnace
- High fuel consumption All brands · Furnace
- High stack temperature All brands · Furnace
- High stack temperature / low efficiency All brands · Furnace
- Indoor blower runs, outdoor unit dead All brands · Furnace
- Limit opens All brands · Furnace
- Locks out — oil but no ignition All brands · Furnace
- Low CO2 (<8 %) All brands · Furnace
- Low draft / blowback All brands · Furnace
- Modulating furnace won't modulate All brands · Furnace
- Negative house pressure, backdrafting, infiltration All brands · Furnace
- No heat All brands · Furnace
- No heat (ignition stage) All brands · Furnace
- Noisy All brands · Furnace
- Noisy registers, drafts, blower overamps/ECM noise, coil freezing All brands · Furnace
- Not running / fault code All brands · Furnace
- Oil + ignition OK but no flame All brands · Furnace
- Oil on floor All brands · Furnace
- Pressure switch open / stuck All brands · Furnace
- Puff-back / delayed ignition All brands · Furnace
- Reduced airflow, hot motor All brands · Furnace
- Reduced pressure, smoky shutdowns, lockouts All brands · Furnace
- Rollout switch tripped All brands · Furnace
- Short cycling All brands · Furnace
- Smoke, soot, odour, pulsation All brands · Furnace
- Starts but locks out — no oil at nozzle All brands · Furnace
- Too little / too much air All brands · Furnace
- Unsatisfactory heat (short cycles / uneven / not enough) All brands · Furnace
- Water flows with furnace off All brands · Furnace
- Check the hot surface igniter Goodman · Furnace
- Control display blank, furnace dead - Goodman/Amana 9-speed ECM furnaces Goodman · Furnace
- Delayed ignition - rough light-off Goodman · Furnace
- Flashback - burning inside the burner venturi Goodman · Furnace
- Furnace in lockout - how to reset it Goodman · Furnace
- No heat - Goodman/Amana 9-speed ECM furnaces Goodman · Furnace
- No ignition - voltage checks at the ignition control Goodman · Furnace
- Poor combustion / flame problems - Goodman/Amana GM9C96 Goodman · Furnace
All Goodman Furnace error codes →
Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.