All Rheem error codes

Rheem Water Heater Error Codes

13 error codes for Rheem water heater models. Each links to the full diagnostic procedure from the service manual.

CodeDescription

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…13Persistent error after taking standard reset steps (error code 12 related).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.

MyPros+ Max

Get the full diagnostic procedure for any Rheem water heater error code.

Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts
Verified part numbers when replacement is required

$29/month · Cancel anytime · Or $9.95 3-day pass

M+

M+ Max·Rheem Water Heater

05 on my Rheem Water Heater

M+

Air intake or vent exhaust opening may be

From Service Manual 277577, p.29:

1.Remove any blockage. (Air intake requires 12 in. [30 cm] of clearance.)

2.Measure door lock assembly resistance across the PTC terminals. Expected: ~200 ohms cold, rising sharply once energized.

3.Inspect strike and latch alignment. A warped door or misaligned strike prevents the switch stack from closing in the correct sequence.

Part W10810403

Door lock assembly

Start diagnosing faster today.

$29/month · Cancel anytime · Or $9.95 3-day pass