Rheem · Tankless Water Heaters
The 'Power On/Off Indicator' light shows the electrical status of the water heater. It will be lit when the unit has power and off when there is no power.
Click steps to track your progress.
Check if the power switch on the unit is in the ON position.
Verify the circuit breaker for the water heater is in the ON position.
Ensure the power supply cord is securely plugged in.
Check for voltage at the unit if power is suspected.