Quote:
Originally Posted by Scott Douglas
Batteries are new as of yesterday. Blew it out with canned air too while I was in there.
Don't know if it's a single or multi stage furnace. It's got the A/C system integral to it and is a Carrier unit.
Yes, the thermostat is still calling for heat when it shuts down as it hasn't reached temp in the room according to its readout.
I cleaned the filter a couple weeks ago in anticipation of us using the heat more this winter. It was cleaned for A/C use which lasted until early Nov this year as we had some hot days.
I think the power outage we had recently might have messed with things, either in the t-stat or in the furnace itself.
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Since you posted a pic of the t-stat, it's only capable of single stage heat. So not that. However, there should be a "Heat On" that shows up on the screen when it calls for heat. If the room is colder than the set point, does the furnace eventually come back on all by itself, or do you have to do something after the 15 minute shutdown?
One thing if there was a power outage and the batteries were suspect - go through the setup again and make sure none of the settings are set weird.
http://www.kele.com/Catalog/22%20Thermostats_Controllers/PDFs/TH4110%20Installation%20Sheet.pdf
Page 8, go into setup and verify. You probably want the default (in bold) for your configuration.
One other thing, when the furnace does its 15 minute shutdown, are there any errors showing on the furnace controller itself? It may or may not have warning lights, and you may need to remove a cover to see them.