Circulating hot water but no heat at radiator


Old 01-04-13, 08:55 PM
Alchemer's Avatar
Thread Starter
Join Date: Jan 2013
Location: USA
Posts: 1
Received 0 Votes on 0 Posts
Exclamation Circulating hot water but no heat at radiator

This is a bit of a mind boggler, so I'll lay it out:
I have a hot water boiler with three zones. All three circulator pumps turn on and circulate water when called for. However, on zone 2, even though hot water is being pulled through, the radiator is getting NO heat. The water going to that zone is hot and the water coming back is a bit colder, expected, but where is that heat going?? I've never had this problem before, it was working yesterday and now it doesn't produce heat, even after being on for several hours. I'm pretty sure it's on a series loop.
Does anyone have any clue what might be happening?
Sponsored Links
Old 01-04-13, 09:39 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,013
Received 41 Votes on 36 Posts
May not be a series loop. Since you say you know water is flowing it possible you hear air running through the pipes?

What is the make and model boiler?

What does the psi and temp say on the boiler gauge?

Possible you have low pressure or air. Did you bleed the radiator?

Take pics it helps us help you.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: