No Heat Downstairs - HVAC - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC


Thread Tools Display Modes
Old 01-01-2009, 07:31 AM   #1
Join Date: Jan 2009
Posts: 9
Rewards Points: 10

No Heat Downstairs

I have a forced hot water system. The heat will not turn on downstairs but works up stairs. The boiler is obviously working and both pipes for the upstairs and downstairs heat are hot. I checked the digital thermostat downstairs and that seems to be working fine.

Can anyone help?


cody0405 is offline   Reply With Quote
Old 01-01-2009, 07:56 AM   #2
Electrical Contractor
kbsparky's Avatar
Join Date: Sep 2008
Location: Delmarva
Posts: 3,368
Rewards Points: 2,000

No Heat Downstairs

You could have one of more of the following problems:

Pipe(s) froze
Blockage in pipes
Valve set to wrong position
Circulator pump not working, due to ...
bad relay or controls
bad pump motor
bad impeller in pump


kbsparky is offline   Reply With Quote
Old 01-01-2009, 11:49 AM   #3
biggles's Avatar
Join Date: Jan 2008
Location: Long Island
Posts: 3,630
Rewards Points: 2,000

No Heat Downstairs

if you have single circ pump then thats OK because the other zone is heating .so go to the zone valve for the problem zone and put it to manual by pushing the bar over if you feel resistance as your pushing the stat isn't calling or the wires going up to it are in question.if it goes over with no resistace the stat is call but you might have air trapped up downstairs.if you zons are controlled by one circ per zone check the circulator pump if too hot to touch on the body it might be cooked.
biggles is offline   Reply With Quote
Old 01-02-2009, 02:27 AM   #4
An old Tradesmen
Join Date: Oct 2008
Location: Somewhere
Posts: 30,044
Rewards Points: 11,560

No Heat Downstairs

Might have air in second floor piping.
Boiler pressure might be low.
beenthere is offline   Reply With Quote

Thread Tools
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Getting a House..heatpump or no? DavidsCPU HVAC 10 02-07-2010 11:22 PM
Cracked Heat Exchanger SusanB. HVAC 12 10-14-2008 04:57 PM
Which diagram to use on Lenox Thermostat wiring setup? Heat Pump Lenox techs needed twilightcall HVAC 1 08-13-2008 12:49 PM
Please Help No Heat Upstairs Radiator Downstairs Is Fine !!! CARL7480 HVAC 3 02-13-2008 03:46 PM

Top of Page | View New Posts