Rheem Error Code A041: Outlet Thermistor Open/Short
Warning: Your Rheem HVAC system has detected an issue with the outlet thermistor, which could lead to system malfunction or damage if not addressed.
How to Fix Rheem Code A041
- Check your system's air filter. A clogged filter can cause the outlet temperature to rise, triggering the A041 error.
- Inspect the area around the outlet thermistor for any signs of damage or corrosion. If you find any, it's best to call a professional.
- When to call a pro: Always for electrical or wiring issues, and if you're not comfortable performing any checks or maintenance yourself.
How to Reset Rheem Code A041
- 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 A041 Mean?
The A041 error code on your Rheem HVAC system indicates a problem with the outlet thermistor. This component is responsible for measuring the temperature of the air leaving your system. If it's open or shorted, your system can't accurately monitor and control the air temperature, leading to comfort issues and potential system damage. This error will cause your system to enter lockout mode, displaying the A041 code on your display.
Common Causes
- A broken or faulty outlet thermistor
- Wiring issues between the thermistor and the control board
- Corrosion or damage to the thermistor's sensing element
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| The system is in lockout mode with the A041 code | Measure the resistance of the outlet thermistor using a multimeter | Resistance should be within the manufacturer's specified range (usually between 10,000 to 100,000 ohms) |
| The resistance is not within the specified range | Inspect the wiring between the thermistor and the control board for any breaks, corrosion, or signs of damage | Wiring should be intact and free of damage |
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 |
|---|---|---|---|
| Outlet Thermistor | RHEEM 480147 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Rheem model families as A041.
| Code | Description | Severity |
|---|---|---|
| A001 | Ignition Failure | Warning |
| A021 | Over-Temperature | Warning |
| A031 | Inlet 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 |
| A095 | DIP Switch Error | Warning |