Hot water base board heat

We have been able to hear water rushing through the pipes of our baseboards this year and have never noticed this in the past. Husband bled all the valves of air when we first turned it on. Now, even though the water was still rushing through, it is cold. There IS a pilot light and it will fire up if we manually turn the shutter, but then it clicks off again. If we bleed some of the water off, it will fire up briefly then shut down again. PSI is between 12 and 15. ANy clues?? Please help. The house is cold and its Sunday!

Hi JanF, welcome to the forum

Thanks for the Warm Welcome. Wish I could say the same for this house. Furnace still isn't working properly

Could the thermostat be malfunctioning perhaps?

Jeffie,
Thanks for the input. We do have another non programmable around here somewhere that we could switch back to, just to see.

Great I would appreciate it if you could 'report' back about that here...

Ok, we had to have the vent damper replaced. As soon as it was hooked up, the furnace started firing properly and has been maintaining heat as it should... howEVER, it is now dumping 'excess' water every time it heats up, which means the pressure keeps going over 30psi when hot. This is supposed to be a closed system and that water release valve is only a safety feature, right? The pressure is staying where it should, so it must be taking on extra water all the time. I'm wondering if an intake valve is open or leaking, or there is a leak in the system which would require it to keep filling. Or some water filling sensor is jacked as well.( I don't see a smiley for the rolling of eyes). ~sigh~

A relief valve will discharge for any of the following

1- Automatic feeder not set to proper pressure ( between 12 -15 PSI)

2- Automatic feeder is allowing excessive pressure by being defective

3- Expansion tank flooded or the bladder needs recharging

4- If this boiler is also used for domestic H /W water the coil could be leaking and cause pressure build up

Hey Tieger plumber,
Thanks so much for your input. Good knowledge and advice. We ended up replacing the expansion tank(40.00 from our local plumbing supply) and everything is finally running as it should. The bladder was shot. Heck of a job getting the old tank off. Husband put some pvc pipe over the handle of his pipe wrench for extra leverage while I held the network of pipes it was attached to, and it finally let go. If nothing else, we've learned a great deal about how this system works and how to fix it.

Your very,very welcome thank you for getting back to me. Sylvan

Sylvan, I have sent you a PM a few days ago. Could you please have a look at it and, if you be so kind, respond? Thanks.

HI I answered it saying I would be honored

It didn't get to me, I never received it
Could you please retry sending it?

I said I would like to be a moderator as I own a plumbers list ( strictly plumbers) and would enjoy posting on here