Rheem tankless water heater troubleshooting doesn’t have to be a difficult thing. That said, there are some errors you can easily fix yourself and some which should be left to a qualified service technician.
Use your Rheem heater manual as a reference when performing any repairs, and make sure to use the technical support number (1-866-720-2076) whenever you’re unsure what to do.
Have a different tankless water heater brand that needs troubleshooting?
Rheem Tankless Water Heater Error Codes
Check out also complete Rheem Water Heater Manuals.