Brand: Goodman
Category: Furnace
Manual Type:
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Manual for GM9S96/GC9S96 - Troubleshooting and error codes + PDF Download
Uploaded: April 8, 2025, 1:44 p.m.
Manual Publish Date: 2021-08-01
Warranty Summary
The furnace has a lifetime limited warranty on the heat exchanger and a 10-year limited warranty on unit replacement and parts with online registration within 60 days of installation.
The Goodman GM9S96/GC9S96 is a single-stage, multi-speed ECM gas furnace with up to 96% AFUE. It features a heavy-duty aluminized-steel tubular heat exchanger and a stainless-steel secondary heat exchanger. Operation includes a single-stage gas valve and durable silicon nitride igniter. It has a quiet single-speed induced draft blower and a self-diagnostic control board with constant memory fault code history output to a LED.
Troubleshooting and error codes
| Seven Segment Display | Error Code Status | Seg#3 | Seq#2 | Seg#1 |
|---|---|---|---|---|
| Internal Faults or IRQ Loss | E | E | E | |
| Lockout Due to Excessive Retries or Recycles | E | E | 0 | |
| Pressure Switch Stuck Closed | E | E | 1 | |
| Pressure Switch Open | E | E | 2 | |
| Open High Limit Switch | E | E | 3 | |
| Flame Detected When no Flame Should be Present | E | E | 4 | |
| Open Fuse | E | E | 5 | |
| Low Flame Signal | E | E | 6 | |
| Ignitor Relay Fault | E | E | L | |
| Reversed Line Polarity or Grounding Error | E | E | A | |
| Internal Gas Valve Error | E | b | ||
| External Gas Valve Error | E | E | C | |
| Open Rollout Switch | E | 1 | 1 | |
| Ignitor Open | E | E | n | |
| Inducer Relay Error | E | E | r | |
| TWIN Error | E | E | H | |
| Grounding Error | E | 1 | 0 |
Troubleshooting and error codes
| Seven Segment Display | Error Code Status | Seg#3 | Seq#2 | Seg#1 |
|---|---|---|---|---|
| Internal Faults or IRQ Loss | E | E | E | |
| Lockout Due to Excessive Retries or Recycles | E | E | 0 | |
| Pressure Switch Stuck Closed | E | E | 1 | |
| Pressure Switch Open | E | E | 2 | |
| Open High Limit Switch | E | E | 3 | |
| Flame Detected When no Flame Should be Present | E | E | 4 | |
| Open Fuse | E | E | 5 | |
| Low Flame Signal | E | E | 6 | |
| Ignitor Relay Fault | E | E | L | |
| Reversed Line Polarity or Grounding Error | E | E | A | |
| Internal Gas Valve Error | E | b | ||
| External Gas Valve Error | E | E | C | |
| Open Rollout Switch | E | 1 | 1 | |
| Ignitor Open | E | E | n | |
| Inducer Relay Error | E | E | r | |
| TWIN Error | E | E | H | |
| Grounding Error | E | 1 | 0 |