Rheem · Tankless Water Heaters
The water heater should not be connected to a Ground Fault Circuit Interrupter (GFCI) or Arc Fault Circuit Interrupter (AFCI) protected circuit. These types of circuits can interfere with the proper operation of the water heater.
Click steps to track your progress.
Verify the circuit you are using is not a GFCI or AFCI type.
If the circuit is GFCI or AFCI protected, use a different, standard circuit.
Consult an electrician if you are unsure about your circuit types.