Error code reference

Rheem Water Heater Error Codes

13 error codes documented with diagnostic procedures.

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05Air intake or vent exhaust opening may be blocked.11The vent pipes on the vent termination may not be connected properly.12Gas shut-off valve is not fully opened, gas service has been interrupted, or LP gas is…13Persistent error after performing standard reset steps.14Water heater is overheating.15The heat exchanger is too hot.1LWater heater has buildup of lime deposits.31Faulty inlet thermistor.33Faulty outlet thermistor.61Faulty blower motor.65Faulty water flow solenoid.99Faulty blower motor.P1Not enough water flow to operate the unit.

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