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Old 02-11-2008, 07:01 PM   #1
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Dual Thermostats


I have a thermostat upstairs, and one downstairs. The one downstairs has stopped working. I replaced it with a new digital one, but still no heat. I have heat upstairs though, so now not sure what the problem could be. So my question is, could only some of my pipes be frozen, while others are still working? I have oil heat, water baseboards. I have a bathroom in my downstairs that is getting hot/cold water just fine. So do I wait it out for them to thaw, or spend the money to have someone come in??? Obviously no pipes have burst, or I would have called already. Please help!

thanks!
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Old 02-11-2008, 07:03 PM   #2
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Dual Thermostats


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Originally Posted by soccermom22 View Post
I have a thermostat upstairs, and one downstairs. The one downstairs has stopped working. I replaced it with a new digital one, but still no heat. I have heat upstairs though, so now not sure what the problem could be. So my question is, could only some of my pipes be frozen, while others are still working? I have oil heat, water baseboards. I have a bathroom in my downstairs that is getting hot/cold water just fine. So do I wait it out for them to thaw, or spend the money to have someone come in??? Obviously no pipes have burst, or I would have called already. Please help!

thanks!

Did you install the new t-stat correctly? Was the old t-stat the real problem? I would remove the new t-stat and short out the R&W wires and see if the boiler fires....
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Old 02-11-2008, 09:58 PM   #3
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Dual Thermostats


you have a circulator on that system there is no way if one zone is cold you are going to bust a pipe it is one circulator for both zones.the zone valve might be your problem.go down to the non-working zone you should be able to move it to manual(slide bar sticking out of cover)with the other zone calling to see the new stat'd zone heats.if you only have 2 wires to the stat just put them together(up in the space) to simulate the stat calling.....but first manually move that zone valve down at the boiler.your stat controls the zone valve witch as it moves to the open position calls the boiler in and/or turns the circulator on...the boiler might be controlled by a standing limit control,that maintains the hot water(uses oil) with in itself when not being used.if you never hear the boiler cycling during the night sleeping hours it is then a "cold start" from the stat calling(saves oil).make sure your new stat is set to heat on the selecter or ICON for heat on a digital...brand/model number of what you had and what you installed could help us helping you.
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Last edited by biggles; 02-12-2008 at 04:46 AM.
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