Goodman Error Code 7: Low Flame Signal
LED Blink Pattern
LED blinks 7 times.
How to Fix Goodman Code 7
- Step 1: Turn off your furnace at the thermostat and the main gas valve.
- Step 2: Locate and clean the flame sensor using a fine-grit emery cloth or a wire brush designed for this purpose.
- Step 3: If the problem persists, call a professional HVAC technician. Do not attempt to open the unit or touch gas lines.
How to Reset Goodman Code 7
- Turn off the furnace power switch, usually located on or near the unit.
- Turn off the circuit breaker for the furnace. Wait 30 seconds.
- Restore power at the breaker and flip the furnace switch back on.
- Set the thermostat to call for heat. If the error code returns after 2-3 ignition attempts, the fault requires repair.
Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.
What Does Goodman Error Code 7 Mean?
The Goodman 7 error code indicates that your furnace's flame sensor isn't detecting a strong enough flame from the burner. This could be due to a dirty sensor, a faulty gas valve, or a problem with the ignition system. The system will typically go into lockout to prevent further operation and potential safety hazards.
Common Causes
- Dirty or faulty flame sensor
- Faulty gas valve
- Problem with the ignition system (hot surface igniter or spark igniter)
- Low gas pressure
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| Furnace is not igniting | Flame sensor reading with a multimeter | Around 10-20 ohms |
| Furnace is igniting but code persists | Gas valve operation | Gas valve opens and closes correctly when tested with a multimeter |
Applicable Goodman Models
Recall Notices
Issued: November 1, 2021
Affected models: Molded plastic evaporator coil drain pans in up-flow condensing gas furnaces
Drain pans can overheat, melt, and deform, posing a fire hazard. Recall expanded January 2024.
Replacement Parts
| Part | OEM Number | Est. Cost | Where to Buy |
|---|---|---|---|
| Flame Sensor | 48T81284 | — | Find Part |
| Gas Valve | 48T81525 | — | Find Part |
| Hot Surface Igniter | 48T81351 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Goodman model families as 7.
| Code | Description | Severity |
|---|---|---|
| 1 | System Lockout | Warning |
| 2 | Pressure Switch Stuck Closed | Warning |
| 3 | Pressure Switch Stuck Open | Warning |
| 4 | Open High Limit Switch | Warning |
| 5 | Flame Sensed With Gas Valve Off | Warning |
| 6 | Open Rollout Switch | Warning |
| 8 | Ignitor Error | Warning |
| CONTINUOUS | Reversed Polarity | Warning |
| F01 | Goodman Code F01 - Ignition Lockout | Critical |
| STEADY-ON | Normal Operation | Info |