Question about Honeywell Programmable Thermostat Heater
Our programmable thermostat works great, most of the time. Sometimes, however, the unit will not shut off once the thermostat reaches the programmed temperature. (i.e. AC is set for 72, unit continues to run past 69 and does not shut off until we "override" the programmed temperature)
The programmable thermostat is a LUX version and is about 2 years old. Our ac and heater are both 6 years old.
Could we just need a new thermostat?
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Posted on Jan 02, 2017
SOURCE: loss of temperature control
Is the heater staying on all the time? Most likely cause of themostat trouble is the sensor. Try to find it and measure its resistance at different temps to verify the trouble.
Posted on Dec 31, 2007
Solution #2 as above worked (thank you very much!) to get to the programming mode, but on mine keeping Function #13 on the default setting of "0" maintained the AIR. Toggling the Temp button to "1" changed the system to conventional on/off at the programmed times.
Posted on Feb 07, 2008
Our Honeywell thermostat is model RTH6300B. Now that the weather is getting hot, we decided to put the centeral air on. Hot air keeps blowing out. I called Honeywell several times thinking that we had fixed the problem. It still is blowing out hot air. Also, my husband checked the wires. Has anyone else had this problem? Any ideas what it could be?
Posted on May 29, 2008
Well with a boiler system like you have it will cost you more money to heat your house that way than if you leave it like it is. With a boiler system it takes a lot longer to heat an area than with a furnace. The best thing you can do is find a happy medium and leave it there at all times. If you read the paper work on your new thermostats they have a set procedure which tells the thermostat if you have forced air or boiler system. Do you have baseboard or in-floor heat how many zones do you have.
Posted on Jan 20, 2009
Most thermostats use a six volt transformer for a power source, similar to a door bell, you can tell if yours does by looking at the wires that are attached to the thermostat.
The wires will be thin with just a single strand if you have these wires then you have a transformer, try and find the transformer (good luck) test it with a voltmeter if it fails the test that's it, if not, call the man. Probably it though.
Posted on Feb 15, 2009
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