Amana AMSS960803BN Error Code 1 Flash: Ignition Lockout
What Does Code 1 Flash Mean?
Code 1 (1 Flash) on the Amana AMSS960803BN indicates an ignition lockout. The furnace attempted to ignite three times and failed each time, triggering a safety lockout. The control module will automatically attempt to reset after one hour.
During a normal heating cycle, the inducer motor starts, the hot surface igniter heats up, the gas valve opens, and the flame sensor confirms that a flame is present. If the flame sensor cannot detect a flame, or if the flame is lost after being established, the control module counts it as a failed attempt. After three consecutive failures, the system locks out to prevent unsafe conditions.
The most common cause is a dirty or oxidized flame sensor. Over time, carbon and oxide buildup on the sensor rod reduces its ability to detect the flame's electrical signal. Other possible causes include a failed or misaligned hot surface igniter, no gas supply reaching the burners, or gas supply interruptions causing flame loss after establishment.
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Dirty or oxidized flame sensor | Most common | ✗ Call a pro → |
| Failed or misaligned igniter | Common | ✗ Call a pro → |
| No gas supply to burners | Common | ✗ Call a pro → |
When to Call a Professional
Contact a licensed HVAC technician if:
- Code 1 returns after cleaning the flame sensor
- The igniter does not glow red-hot during the ignition sequence
- You smell gas but the burners do not light
- The flame lights briefly then goes out repeatedly
- The flame sensor rod appears cracked or damaged
Sources
✓ Verified against manufacturer service manual — March 2026