What each Goodman code means — and what to do next. Stuck? AAA Comfort Air fixes Goodman systems across Central NJ, often same-day.
Goodman (and its sister brand Amana) build dependable, value-priced furnaces and ACs. Their control boards flash a red LED code that makes diagnosis straightforward.
Look through the small window on the lower access panel and count the red LED flashes; the pattern repeats. The indicator is a red LED flash code.
| Code | What it means | What to do |
|---|---|---|
| Steady ON | Normal — power present, standby | No action needed |
| Steady OFF | No power to the control board | Check the breaker and the furnace door switch |
| 1 flash, continuous | No call for heat from the thermostat | Check thermostat settings/batteries |
| 1 flash, repeating | Lockout after 3 failed ignition attempts | Often flame sensor, igniter, or gas — call us |
| 2 flashes | Draft inducer or pressure switch stuck closed | Call us |
| 3 flashes | Pressure switch open | Blocked vent/intake or clogged condensate — call us |
| 4 flashes | Open primary limit (overheating) | Replace a dirty filter; if it repeats, call us |
| 5 flashes | Flame sensed with no call for heat | Slow-closing gas valve — call us |
| 7 flashes | Flame sensor fault | Sensor needs cleaning or replacement — call us |
| 8 flashes | Igniter fault | Call us |
| Rapid continuous | Reversed line polarity / miswired | Call us |
⚠️ Codes can vary by model and control-board revision — always confirm against the label inside your unit’s access panel. For any gas, electrical, or refrigerant fault, call a licensed technician.
Look through the small window on the lower access panel and count the red LED flashes; the pattern repeats.
You can try one power cycle at the breaker to clear a one-time fault. But if the same code returns, it’s a real fault — repeatedly resetting a gas or electrical issue can be unsafe. Call AAA Comfort Air at 609-665-3022.
AAA Comfort Air installs and repairs Goodman systems across Cream Ridge and Central New Jersey, with same-day and 24/7 emergency service. Call 609-665-3022.
Book online or call your local Goodman HVAC team — same-day & 24/7 emergency service.
