Rheem Tankless Water Heater Temperature Adjustment

This article on Rheem Tankless Water Heater Temperature Adjustment will describe:  Rheem Tankless Water Heater Temperature Adjustment Let’s learn how to adjust the temperature on a Rheem Tankless Water Heater, whether it’s powered by gas or electric.  How To Adjust Temperature On Rheem Electric Tankless Water Heater:  How To Adjust Temperature On Rheem Gas Tankless…

Rheem Tankless Water Heater Error Code H103
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Rheem Tankless Water Heater Error Code H103

Rheem Tankless Water Heater Error Code H103 means the high-limit safety switch gets tripped. This safety device will shut off your tankless water heater automatically when the water temperature gets too high.  To reset the error code H103, you should check the high-limit switch and replace it if required. Apart from this, check the burner…

Rheem Tankless Water Heater Code P1 [Too Low Water Flow]
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Rheem Tankless Water Heater Code P1 [Too Low Water Flow]

Rheem Tankless Water Heater Code P1 indicates too low water flow that prevents the unit from kicking on. Typically, the water flow gets too low when the cold water inlet filter gets filthy by minerals or deposits.  To clear the error code P1, you must clean the cold water inlet filter. If the inlet filter…

Rheem Tankless Water Heater E5 Code (Too Much Water Flow)
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Rheem Tankless Water Heater E5 Code (Too Much Water Flow)

Rheem Tankless Water Heater E5 Code indicates the water flow is too much, and the unit can’t keep up with the demand. As a result, your tankless water heater fails to produce enough hot water and throws the fault code E5.  Limiting the water flow, you can clear the error code E5. You can install…

Rheem Tankless Water Heater Will Not Power On
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Rheem Tankless Water Heater Will Not Power On

Rheem Tankless Water Heater will not power on or turn on due to one of the following reasons:  To discover each troubleshooting step in detail, keep reading.  Rheem Tankless Water Heater Will Not Power On [7 Easy Solutions] Here are the culprits that cause the water heater to not turn on:  1. Power Cord Isn’t…

How To Reset Rheem Tankless Water Heater
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How To Reset Rheem Tankless Water Heater

In this article:  When Should You Reset Your Rheem Tankless Water Heater? Resetting a tankless water heater will help you avoid general water heater issues like error codes, power outages, or water flow issues.   What happens when you reset the unit is- it will clear the glitches from the control board. But how?  The resetting…

Rheem Rtex-18 Troubleshooting [Complete Guide]
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Rheem Rtex-18 Troubleshooting [Complete Guide]

This guide on Rheem RTEX-18 Troubleshooting will break down:  Note: This is an electric tankless water heater. If you have a gas unit, read this article on the Rheem Tankless Water Heater Troubleshooting Manual. Rheem Rtex-18 Troubleshooting: Common Problems & Solutions Here are the common problems you might experience:  1. Water Heater Isn’t Heating At…