Rheem Water Heater Error Code 99

Error code 99 on a Rheem water heater indicates a faulty blower motor condition. The control board has detected that the blower motor is not operating correctly and has shut the unit down as a safety measure. This fault requires diagnosis by a qualified service technician, as it involves electrical and mechanical components within the blower system.

No, the water heater has shut itself down when displaying code 99 and will not operate normally. This is a protective response to prevent unsafe operation due to the blower motor fault. You should leave the unit off and contact a technician before attempting to use the heater again.

Repair costs for a blower motor fault vary depending on the specific cause and your location. A simple wiring repair or obstruction clearing will be less expensive than a full blower motor or control board replacement. Parts and labor costs combined can range from around $150 to $600 or more depending on the component needed and local service rates.

Rheem directs owners to contact a dealer or qualified service technician for this fault code rather than attempting self-repair. Diagnosing a blower motor fault requires testing motor windings, supply voltage, capacitor integrity, and control board signals, which are tasks that call for proper tools and training. Attempting repairs without the appropriate knowledge can cause further damage or create a safety risk.

A manual reset may temporarily clear the fault display, but if the underlying blower motor problem has not been repaired, the code will return once the unit attempts to operate again. Resetting without addressing the root cause does not fix the fault and could delay necessary repairs. A technician should inspect the blower motor and associated components before the unit is returned to service.