In most airstream travel trailers, the water heater on and off switch is located in the bathroom.

How to light a tankless water heater. If you have a gas or water main break, you will need to disconnect the gas. Each drawing around 50 amps. The light will turn from red to green when done correctly.

Once the time limit is up, you can unplug your pump so that there’s no more chemical agent going through your tankless water heater. Turn off the power button before starting. Press the on/off button once.

Tankless water heater temperature setting your led screen will now show a “ 01a ” reading. There will be a red or black button marked “ignition,” press it for about 60 seconds. Afterward, if there’s still no power going to the unit, call a.

Now, look underneath the panel, and there should be. Turn the gas supply to the water heater off. If there's wear or damage to this sensor, the burners will often fail to turn on.

Then, turn the pilot dial until it says the word pilot. Allow at least a ¼ inch downward sloping of the exhaust pipe to the water heater. Take your pliers and shut off.

If you have a tankless heater, the therapy is much more uncomplicated. The reading on the screen will change to “ 01b ” or “ 016. You will hear the clicking sound of the igniter sparking.