heat keeps on heating

Reply

  #1  
Old 02-10-16, 07:03 PM
Member
Thread Starter
Join Date: Oct 2003
Location: usa
Posts: 113
Received 0 Votes on 0 Posts
heat keeps on heating

I have a multi-zone heating system. Lately, one of the zones have been behaving strangely. I set my programmable thermostat to 66 degrees (for the time period when we come home after work), but the heat is working till temperature reaches 69 or even 70 and only then it shuts off. The thermostat appears to be acting normally -- it says "heat on" when the temperature is below 66, and when it reaches 66, it no longer says that; but the baseboards are always very warm and the toekick heater I have tied into that zone just keeps blowing warm air.

So, my question: is it a problem with the thermostat, even though it seems to be functioning normally, or with the boiler (I have EK System 2000)? Is there an easy way to find out short of replacing the thermostat? Again, it's only one of the four zones that's doing it. Thanks.
 
Sponsored Links
  #2  
Old 02-10-16, 07:13 PM
Member
Join Date: Nov 2011
Location: USA
Posts: 409
Received 2 Votes on 2 Posts
From what you describe, it sounds like the t-stat is working OK.

Are the zones controlled by separate pumps, or zone valves?
 
  #3  
Old 02-11-16, 01:01 AM
Member
Join Date: Dec 2013
Location: USA
Posts: 228
Received 0 Votes on 0 Posts
You may have a weak/dead battery or bad relay in the thermostat.
Observe zone valve input LED on system 2000 control board.
Digital Energy Manager Diagnostic Tool [pdf]
 
  #4  
Old 02-11-16, 05:03 AM
Member
Thread Starter
Join Date: Oct 2003
Location: usa
Posts: 113
Received 0 Votes on 0 Posts
Yes, there are separate zone valves.
 
  #5  
Old 02-11-16, 05:18 AM
Member
Thread Starter
Join Date: Oct 2003
Location: usa
Posts: 113
Received 0 Votes on 0 Posts
I actually did that yesterday, and the input light for that zone was not on (the output light for that zone on the right side was on), but the baseboards were hot and the toekick heater kept blowing hot air.
 

Last edited by davidm; 02-11-16 at 06:48 AM.
  #6  
Old 02-11-16, 05:46 AM
Member
Join Date: Jul 2009
Location: Toronto
Posts: 1,174
Received 0 Votes on 0 Posts
Check the zone valve that goes to that zone.
It is likley open, it either has power or has failed in open position
If it has power to it, then your zone control system will need electrical troubleshooting.
 
Reply

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
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: