Rheem · Water heater
Code 61 Fan motor / venting fault
What this code means
The exhaust fan isn't reaching the speed the control board expects, often tied to a venting restriction.
Most likely causes
- Blocked or undersized vent run
- Failing fan motor
- Excessive vent length beyond the model's rated maximum
What to try first
Inspect the exterior vent cap for blockage from leaves, snow, or nests.
Safety note: if this code returns after one clean reset, stop resetting it — repeated lockouts usually mean a real fault that needs a licensed technician. Never bypass a safety switch.
FAQ
What does Rheem error code Code 61 mean?
Fan motor / venting fault. The exhaust fan isn't reaching the speed the control board expects, often tied to a venting restriction.
Can I fix Rheem code Code 61 myself?
Usually not. Inspect the exterior vent cap for blockage from leaves, snow, or nests. If the code returns after one reset, it needs a licensed technician.
What causes Rheem code Code 61?
The most common causes are: blocked or undersized vent run; failing fan motor; excessive vent length beyond the model's rated maximum.
Other Rheem water heater codes
All Rheem water heater error codes →
Other water heater brands: Ruud · Rinnai · Navien · Noritz · Takagi · A.O. Smith · Bradford White · State / American · Generic electric · Generic tankless
This information may contain errors or not apply to your exact model — always double-check it against your appliance's own manual before acting. If there's any chance of a gas, fire, electrical, carbon monoxide, or other safety hazard, stop and call a licensed professional or the appropriate agency (e.g. your gas utility) instead of relying on this page alone.