If you are using a gas powered tankless water heater then you ll need to shut off the gas to it.
Gas tankless hot water heater maintenance.
You can turn the power off to the unit by flipping the breaker to which it is wired.
There should be a lever that allows you to turn off the gas to the unit.
Before doing anything go through the help manual to find out the location of the heating element.
Shut off the hot water valve that sends hot water from the unit to the house.
Click to view table of content show the on demand water tank.
Tankless water heater maintenance is a must and should be done at least once a year.
How tankless water heater maintenance helps you can schedule service or take a do it yourself approach to deal with maintenance.
Now switch off the main power to the heater and also shut off the water from its source.
The water heater must first be turned off including the t p valve and allowed to cool down over time or let someone use up all the hot water.
The primary type of maintenance service that s needed for most of these units relates to cleaning the system in different ways.
In case of a tankless water heater that runs on electricity probably the heating element is faulty and needs to be replaced for which the process is as below.
Never work on your tankless water heater while it is connected to a power source.
Since your tankless water heater is most likely the source of all your drinking water and bathing water using chemical cleaning solutions may be extremely harmful to your health.
Attach a garden hose to the outlet of a sump pump and to your unit s cold water isolation valve.
If minerals have caked onto the components in the unit descaling efforts must be made.
Also commonly referred to as an on demand water heater the tankless water heater may need maintenance every six months if your water heater is set to a high temperature or if you have hard water.
To flush a tankless water heater turn off the gas or power and cold water to the unit.