Question about Heating & Cooling
Programmer instructions required 2004 model
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Posted on Jan 02, 2017
SOURCE: acl lifestyle lp522
The display should not be blank, meaning nothing there to look at. Different digital thermostats can be powered in 3 ways. Just from their battery's, from the furnace control transformer, from the furnace control transformer with battery back up in case the control power fails to retain your programming. Usually, removing it from the base and pulling the battery's to kill ALL of its power, waiting a minute or so then re-powering it, will restore the factory program and return the display. Also, there may be a small fuse on the back of the stat. If it has one, it will be easy to see if you are looking for it. Easy to miss if just looking at it for no reason. Be sure there is power to it. The battery's and their connections first. If you have a meter, check for control voltage. Put one lead on "R" then touch the other to "C", "Y" or "H". Should have 24 volts (AC) from the furnace transformer. I have never seen a stat blow from a power outage. But?
Posted on Dec 18, 2013
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