EcoSmart Water Heater Reset Button

EcoSmart Water Heater Reset Button

This is a complete guide on EcoSmart Water Heater Reset Button. Throughout this guide, I will disclose: 

  • Where is the reset button on EcoSmart Water Heater? 
  • How to reset the EcoSmart Water Heater?
  • And more…

So, let’s get started. 

Table of Contents

Where Is The Reset Button On EcoSmart Water Heater?

The round knob you see in the lower middle part of the unit works as a reset button. This round knob is also known as the adjustment knob. 

Reset button on EcoSmart Water Heater
*Reset button on EcoSmart Water Heater*

It is because you can use this button to adjust temperature. To increase water temperature, just turn the knob clockwise. 

On the other hand, if you want to decrease temperature, turn the knob counterclockwise. 

In the next chapter, I will show you how you can use the round knob to reset your EcoSmart Water Heater. 

EcoSmart Water Heater Reset Button [The Step-by-Step Procedure]

Resetting your EcoSmart Water Heater is more simple than making a cup of coffee. Just follow the below step-by-step procedure and have your unit reset. 

  • Turn on your water heater so that the LED display comes on.
  • Press down the round knob on the unit for 3-5 seconds and release the knob.
  • The LED display should pop up the code CE2. 
  • Run the water for two or three minutes and check for hot water. 

Note: Basically, you need to reset the unit when error codes are displayed on the LED display. And resetting the unit will fix the issue temporarily to get hot water. It means you should resolve the issue behind the fault code. 

When your water heater is operating in the CE2 mode, the unit will heat the water at 125-degree F just like a tank water heater. 

Most importantly, you will be unable to control your water temperature while running the unit in the CE2 mode. 


Why is my Ecosmart water heater not working?

Your EcoSmart water heater won’t work due to the following reasons: 

  • Electric connection issues
  • Flow rate is too low
  • Defective flow meter or the this part gets clogged
  • Internal part failure like heat exchanger gets clogged, defective heating element, or the fuse gets blown out
  • Crossed wiring

Why is my tankless water heater cold?

Low water pressure or lower flow rate is the culprit responsible for the water heater to go cold. If the flow rate within your unit goes lower than the activation flow rate, your water heater won’t heat the water. So, increase the flow rate and it will fix this issue.

What is the life expectancy of a tankless water heater?

A tankless water heater will serve you up to 15 to 20 years if you maintain it properly.

What maintenance does a tankless water heater need?

What maintenance does a tankless water heater need?

The common yet a must maintenance workflow you must perform if you have a tankless unit is to flush the heat exchanger once a year. On the other hand, if you reside in a hard water area, you must flush the unit every six months. 

Turns out, you should also inspect the heating elements periodically and clean or replace them if needed.


The round knob button on the unit actually works as a reset button. Just turn on the unit, press the round knob for 3-5 seconds, and run water through the heater for 3-5 minutes. It will reset your EcoSmart Water Heater successfully. That’s it!

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