A041 🟡 Repair Required

Rheem Error Code A041: Outlet Thermistor Open/Short

⚠️ 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

  1. Check your system's air filter. A clogged filter can cause the outlet temperature to rise, triggering the A041 error.
  2. 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.
  3. When to call a pro: Always for electrical or wiring issues, and if you're not comfortable performing any checks or maintenance yourself.
Type: digital display Display: front panel

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 of Rheem Code A041

  • A broken or faulty outlet thermistor
  • Wiring issues between the thermistor and the control board
  • Corrosion or damage to the thermistor's sensing element

Applicable Rheem Models

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Replacement Parts for Rheem Tankless Water Heater Code A041

Outlet Thermistor OEM: RHEEM 480147