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Rheem Service Manuals & Error Codes
46Service Manuals
13Error Codes
5Appliance Types
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- Verified part numbers when replacement is required
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Top Error Codes for Rheem
CodeTypeDescription
05Water HeaterAir intake or vent exhaust opening may be blocked.11Water HeaterThe vent pipes on the vent termination may not be connected properly.12Water HeaterGas shut-off valve is not fully opened, gas service has been interrupted, or LP...13Water HeaterPersistent error after taking standard reset steps (error code 12 related).14Water HeaterWater heater is overheating.15Water HeaterThe heat exchanger is too hot.1LWater HeaterWater heater has buildup of lime deposits.31Water HeaterFaulty inlet thermistor.33Water HeaterFaulty outlet thermistor.61Water HeaterFaulty blower motor.65Water HeaterFaulty water flow solenoid.99Water HeaterFaulty blower motor.P1Water HeaterNot enough water flow to operate the unit.