Rheem Tankless Water Heater

What does Error Code 11 mean and how do I fix it?

Error Code 11 indicates that the gas shut-off valve is not fully opened. You should check the gas shut-off valve and ensure it is completely open to restore normal operation.

What should I do if I see Error Code P1 on my display?

Error Code P1 means there is not enough water flow to operate the unit. You should check that water is flowing adequately through the system and that nothing is restricting the water inlet.

How do I clear an error code from my Rheem Tankless Water Heater?

First, turn off all hot water faucets and press the Power ON/OFF button to turn off the water heater. Wait 5 minutes, then restart and turn on a hot water faucet to check the display. If the error persists, unplug the unit for 30 seconds, plug it back in, and repeat the process. If the error code still remains after this, contact customer service for assistance.

What does Error Code 29 indicate?

Error Code 29 indicates that the condensation trap is clogged. You will need to clean or replace the condensation trap to resolve this issue.

What is the temperature range I can set on my Rheem Tankless Water Heater?

You can set temperatures from 80°F to 140°F using the digital temperature control in 1°F increments. For temperatures above 120°F, you may need to refer to DIP switch settings in your specific product manual. Heavy-duty models can be adjusted up to 180°F.

How do I mount the unit on my wall?

The unit has 4 keyhole slots inside for mounting. Remove the front cover and attach the unit to the wall using screws through these keyhole slots. No separate mounting bracket is needed as everything required for mounting is included.