Rheem Error Code A041: Outlet Thermistor Open/Short

Severity: Warning
Type: digital display
Where to look: front panel

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.

What does 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.

Affected Models

Replacement Parts

Part	OEM Number	Est. Cost
Outlet Thermistor	RHEEM 480147	—

Related Codes on Same Models

Code	Description	Severity
A001	Ignition Failure	Warning
A003	Abnormal Ignition	Warning
A004	False Flame Detection	Warning
A008	Exhaust Temperature High	Warning
A011	No Flame Detected	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