Rheem Error Code A011: No Flame Detected
Warning: Your Rheem furnace has detected a problem that requires professional attention.
How to Fix Rheem Code A011
- Step 1: Turn off your furnace at the thermostat and at the main gas valve.
- Step 2: Wait at least 30 minutes before turning the gas valve back on to reset the system.
- Step 3: If the error persists, do not attempt to fix it yourself. Call a professional HVAC technician.
How to Reset Rheem Code A011
- Turn off the unit using the power button on the front panel.
- Turn off the gas supply valve.
- Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
- Restore power at the breaker, then open the gas valve.
- Turn the unit back on. If the error returns, the underlying issue needs 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 Rheem Error Code A011 Mean?
The 'No Flame Detected' (A011) error on your Rheem furnace indicates that the system has failed to ignite or maintain a flame. This could be due to a variety of reasons, but it's crucial to address this issue promptly to prevent further damage and ensure your furnace is operating safely.
Common Causes
- Faulty igniter or flame sensor
- Low gas pressure or supply issue
- Clogged or dirty burners
- Malfunctioning gas valve
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| Furnace is not igniting | Igniter resistance with multimeter | 15-30 ohms |
| Flame sensor is dirty | Clean the flame sensor with a wire brush | Sensor is clean and shiny |
Applicable Rheem Models
- NCB(gas)
- NPE(electric)
- R801T(gas)
- R92E(electric)
- R92V(gas)
- RGE(gas)
- RH2T(electric)
- RNC(dual_fuel)
- RNE(electric)
- RNG(gas)
- RP16(electric)
- RPB(gas)
- RTGH(gas)
- Rheem Classic(gas)
- Rheem Classic 80 Plus(gas)
- Rheem Classic 80% Gas Furnace(gas)
- Rheem Classic 90 Plus(gas)
- Rheem Classic Plus Series(gas)
- Rheem Classic Series(dual_fuel)
- Rheem Prestige(gas)
- Rheem Prestige 95% Gas Furnace(gas)
- Rheem Prestige Series(gas)
Replacement Parts
| Part | OEM Number | Est. Cost | Where to Buy |
|---|---|---|---|
| Igniter | RHE-340170 | — | Find Part |
| Flame Sensor | RHE-340171 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Rheem model families as A011.
| Code | Description | Severity |
|---|---|---|
| A001 | Ignition Failure | Warning |
| A021 | Over-Temperature | Warning |
| A031 | Inlet Thermistor Open/Short | Warning |
| A041 | Outlet Thermistor Open/Short | Warning |
| A043 | Water Level Error | Warning |
| A051 | Fan Motor Abnormality | Warning |
| A052 | Fan Motor Speed Error | Warning |
| A053 | Fan Motor Open Circuit | Warning |
| A054 | Fan Motor Overcurrent | Warning |
| A055 | Fan Motor Locked | Warning |