Boiler acting up again

Here's the Link to my other discussion

When I looked up what could cause the pilot light to go out everything was pointing to the thermocouple, so that's a cheap enough part that I replaced It didn't look like it was in the best condition to begin with. I just got done replacing that and tried to fire the boiler back up, held that pilot light in for good 2 minutes, the tip of the thermocouple was red hot but every time I let go of that button it would not stay lit.

When this initially happened I was waiting for somebody to come over and basically everything you guys told me to do in the other discussion he said that's exactly what he would have done. By the time he got here the only thing he did was put a multimeter on the aquistat and he said everything was reading at 24 volts And when he left there was no issue with it overheating or doing exactly what it's doing now that it did last time. Aside from that I really can't afford to hire somebody to fix it I mean pay them to diagnose it is one thing but at the same time if that's something that I can do myself why would I pay them to diagnose it? That's why I'm here hoping you guys could help me figure this out.

I'm thinking It's that aqua stat especially after I tapped on the side of the box with the butt end of a screwdriver and all the sudden it fired up. I checked all the connections in there everything looks good.

Or my worst case scenario everything is going, the aquastat, the circulator pump, and the pilot control valve. Sorry if I didn't call that last part by its exact name I'm not sure what it's exactly called but it's the part that feeds the gas into the boiler.

That's what I thought initially maybe a bad connection. But everything inside the box looks pretty good. And even though I got the pilot light off I put the power back to the system called for heat from my thermostat and I can feel the circulator pump kick on I can tell that it's working, well at least it feels like it does anyway, I'm assuming if it wasn't I wouldn't feel any type of vibration from it, again I could be wrong. But now with the pilot light not wanting to stay lit with a new thermocouple on there I'm thinking that the pilot valve or gas valve whatever the component is called has to be replaced. Throughout all these issues I never had an issue with the pilot light ever shutting off on me until I woke up this morning.

I am almost positive it's not an issue with the downdraft, We have had many windy days throughout the years here and have never had an issue. I should mention this is not when the pilot light is on, this is me trying to relight the pilot, I cannot get it to stay lit when I release the button. By the way you worded your response, it makes me feel as if you believe my pilot light is up and running.

That's what I am thinking, it is the aquastat. I call for heat from the thermostat and the relay clicks, the circulator feels as though it's running, not a guarantee, that's just based off of me placing my hand on the pump before and after I turn the thermostat on.

Pilot is not good.

The thermostats are both Honeywell RTH2410B1019.

I did not try to jump TT, how would I do that and I'm assuming I should have power to the unit when doing that?

The wires are secure at the gas valve.

Hey guys,

Just wanted to fill everybody on where I stand right now, I had a side discussion with Ed trying to diagnose this and All signs are pointing to the gas valve being bad so I'm going to have to replace that. Once I get it replaced I'll message back in here and let everybody know what's going on. Thanks for your help today.

Thanks. I want to get this issue resolved so I can move back to the other issue which is as you said more than likely the aquastat. It seems like all fingers are pointing towards the aqua stat but I just would like to know that it's the issue 100% without a doubt considering that it's not a cheap part to replace.

I didn't get The pressure reading for the outlet side last night just because I want to make sure what I was about to do was the correct procedure, connecting me manometer hose to the outlet hole, igniting the burner, then calling for heat and waiting for the boiler to light up from there what I understand is I should start getting reading on the manometer and then turn the adjustment screw accordingly, counterclockwise to lower and clockwise to raise.

I did that this morning, it was low and as I started raising it the flame started to become more orange obviously more of a pronounced hissing noise from the gas, I didn't take it entirely to four I have it I think between like 3.6 and 3.7 just because it seemed like it was high enough there. I let it run for a bit then I went upstairs and there was a smell, didn't smell exactly like how gas would smell but smelled strong enough to fill up both of the rooms that share a wall with where the boiler is. So I didn't want to take any chance with that smell not fully understanding what it is that I'm smelling so I turn the heat off. Contacted that HVAC guy that I was introduced to through all this and asked him if he had any time to come out today and let me know what that smell is if it's bad if it's something burning off because last night I did take a bristle brush and tried to clean off the top holes of the burners, but at the same time I feel like that smell should have dissipated and not have gotten stronger after about 10 minutes of running.

So as of right now That's where I stand and I'm just currently waiting for that gentleman to come out This afternoon.

Thanks