Water Heater Problems

nayther wrote:

Old-Biscuit wrote:

nayther wrote:

SMarquez wrote:

nayther wrote:
can you hear the spark igniter "clicking" when it tries to light?

I'm with Old-Biscuit, seen quite a few boards being replaced.

Year of TH would be helpful

Yes, I can hear the igniter clicking. It will sometimes "backfire" but not light unless I shut it down for a while.

There's definitely an issue with your heater if you're hearing blowback. Check the main burner tube and where the burner injector tube enters the large burner tube. Spiders love to build nests and webs in these tubes and there's not enough pressure to blow them out. A small wire from a wire brush should pass through the actual gas jet, the other tubes are large enough to use a flexible brush or similar.

There's a sensor that senses flame when it "rolls out" of the burner, it's called a roll out sensor! Could be that's what's happening.

DO NOT go poking ANYTHING thur the orifice......EVER!
THat orifice is a METERED hole that controls the required amount of gas flow.
Poking anything even blowing thru it with High Air Pressure can damage it.
NO!
Soak in alcohol and air dry to clean

you can easily clean an LP jet with a soft bristle from a brush. You're not going to damage a brass jet with a thin piece of bristle, calm down. You're not reaming it out. I've cleaned/unclogged many in this manner.

Are you aware that some orifices used in RV Appliances have thin mica flim with a drilled hole or a ruby gem with a laser cut hole???
Better to KNOW that poking anything thru it CAN Damage it...even the use of High Pressure Air can dislodge the membrane/gem

So best to just NOT do it and just soak/air dry it then cause more problems when it is just uncessesary
**It's not a cutting torch tip

And WHAT is a 'roll out' sensor?