How To Reset Your Tankless Water Heater

Wondering how to reset your Tankless Water Heater?
Enrique quickly guides us how to accomplish this while avoiding possible
danger.

[SCapps-mmeq]

I Thomas- No matter what kind of water heater you have, the pressure valve will be located either on the top or side of the unit. Most likely, it will be near the electric supply or hot water output tube. Don't confuse it with the drain valve, which is used to empty the water out of the heater.

[samthomas]

My steibel tempra plus is set at 109 and will not change or go high (hotter). How do i fix this ?

[jkmcontender]

I just recently installed a noritz 40 size in my attic… worked fine half a dozen times, but now will not kick on and heat the water… the unit is on and displaying 120° but will not kick on when I turn the water on… the unit is less than a week installed

[veronicaesquer]

Why am I losing hot water in the middle of showering? At the beginning extremely hot water comes out. Then all of a sudden cold water appears and stays this way!
What is the proper way to have the knobs set in order to maintain hot water

[veronicaesquer]

In the middle of showering my tankless water heater loses hot water and turns into cold water.
Do I have to have heat energy knobs set in a special way?

[diegoconde]

Before it was too hot after resetting the breaker now is too cold

[IThomas-twoh]

If I run water from any faucet, toilet or wash machine, my Moen Dial shower whistles. I was told that air accumulate in my tankless water heater and I need to open a valve to get this air out. I have a Noritz tankless water heater, Can you tell me which valve to open to release the trapped air?