Rheem · Tankless Water Heaters
The red LED on the control board is flashing, and the display shows 'ON'. This indicates that the water saving control feature has been successfully activated.
Click steps to track your progress.
Ensure DIP Switch 1, position 3 is set to ON.
Press the 'Max' or 'Min' button on the control board within 30 seconds of setting the DIP switch.
Verify the control board LED is flashing ON and the display shows 'ON'.
Turn gas and water supply back on to test functionality.