Girard tankless water heater won't ignite

Solved.
They are sending me a new gas valve (the plunger gets stuck).
Use hammer to tap on the valve with the +/- sign on it.
Located on bottom left side of unit.
Behind the valve with a Philips head screw adjustment on it.
And it will work again, until it gets stuck again...

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I have the digital panel on the wall. I've heard of the tapping on part of the wrench method, but no specific details of where.

This is a popular topic on the Jayco forum, since a lot of (all?) new Jaycos are coming with the Girard Tankless Water Heater.

Assuming you have gas and the lines have cleared (I run the stove a bit), then...


First thing to figure out is whether it's Gen I, II or III. Its likely Gen II or III. Gen I and II have a dial that controls water temperature. Gen III has a digital panel inside.

My Gen II stops heating from time to time. Annoying. To get my Gen II to restart, is a two step process: power off the unit (red switch outside) and press the small black reset button on the white cylinder, left side and back a bit. Google for a video. The reset button isn't documented.

Gen III people are saying that the most common problem is a sticking solenoid. You literally rap it with a hammer. Since I don't have a Gen III I don't know where that solenoid is.

Shut unit down for a few hours, and now it's working again...

2nd night would indicate that air from propane pipes was already bleed?
Do you hear a click at about the same moment when the igniter starts sparking?
Might take 2 persons to do the test.
Check for loose connectors. When new appliance can fail, most often a screw is simply not tight enough.
Also spiders are well known flame killers.

Agree with schlep1967. Make sure tank valve is open and run the stove for awhile to help bleed the air out. Happened to me once and I did just that.

I would suspect lack of gas to the ignition point. Verify your tank valve is open and you may need to find a way to "bleed" the air out of the system to get the gas to the igniter.