Amana Error Code 4R: High Limit / Rollout
Warning: This error indicates a potential fire or carbon monoxide hazard. Shut down the furnace immediately and call a qualified HVAC technician or your gas company.
How to Fix Amana Code 4R
- Step 1: Turn off the furnace immediately at the breaker.
- Step 2: Ensure all vents are unblocked and clear of obstructions like snow or debris.
- Step 3: Replace the air filter with a clean one.
- Step 4: After 30 minutes, try to restart the furnace. If the error reappears, call a qualified HVAC technician for a thorough inspection and repair.
How to Reset Amana Code 4R
- 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.
What does 4R mean?
The '4R' error code on your Amana furnace indicates a high limit or rollout switch has tripped. These are safety devices designed to shut down the furnace if it overheats or if flames are detected where they shouldn't be. The high limit switch monitors the temperature inside the furnace heat exchanger, and the rollout switch detects flames outside the combustion chamber.
When either of these switches trips, it means your furnace is experiencing a dangerous condition. Continuing to run the furnace could lead to a fire, damage to the unit, or carbon monoxide poisoning. It's important to address this issue immediately to ensure your safety and prevent further damage.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| High Limit Switch | A13711-26 | — |
| Rollout Switch | A13711-30 | — |
| Blower Motor | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| 1R | Flame Without Call | Critical |
| 2R | Pressure Switch Stuck Closed | Warning |
| 3R | Pressure Switch Open | Warning |
| 5R | Ignition Lockout | Critical |
| 6R | Gas Valve Relay Fault | Critical |
| 7R | Low Flame Signal | Critical |
| 8R | Reversed Polarity | Critical |
| 9R | Blower Motor Fault | Warning |
| 10R | Communication Error | Warning |