Question about Honeywell Programmable Thermostat Heater

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Turned the programable thermostat down to 65 degrees but it is still 75 degress in here...someone said something about a filter??? HElp!

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Don't know of anyway the filter could cause this. If the filter was bad (clogged), it would cause a rise in temp of the air while in the heat mode but the system should still cut off when the set temp (65) was reached.
Some of these t'stat's are programmable for 7 individual days. You may have to set the temps you want and then "Copy" them to the other 6 days. Read your instructions that came with it or, sometimes there are some brief instructions on the inside of the cover, if it has one.

Posted on Feb 28, 2009

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Why is my honeywell 8320r1003 short cycling for hot water heat.I have heat set at 65 degress.cycling 2min,3min,the most is 8min.


Hi Bill, after closing your thermostat, is this correct the situation?
And how far is your thermostat from your baseboard heater, if the baseboard is underneath the stat, you should move the stat elsewhere. Hope this help you find the problem.

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Trying to set temp on honeywell t-stat


I believe what your experiencing is the 75 degrees is the hold temp position...the display then reverts back to the actual room temperature...it doesn't mean the set temperature changed back to 65 degrees. Try to reprogram the thermostat schedules, and try not to use the hold function...just the temporary hold. (which is bumping the programmed temperature up or down until the next programmed period)

Dec 09, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

I just installed a honeywell 5-2 progammable thermostate.. Everything is hooked up fine and I have my days, hours wake, sleep, leave...etc all set, but when it goes on.. for example, I have it set for...


You didn't include a model number, so it's hard to know for sure - but I'll take a stab at this one. Many of these t-stats have a programmable offset to reduce "hunting". This can be as little as 1 degree or more than 2 degrees.

This means if you set the offset to 1 degree and the room temperature to about 65 degrees, the furnace will heat the room until the t-stat registers a rising temperature of 66 degrees. The furnace shuts off and will not turn on again until the t-stat registers a falling temperature of 64 degrees. The average is 65 degrees, and prevents the furnace from starting and stopping numerous times instead of just once with the 1 degree offset.

You can further reduce the number of furnace start and stops by increasing the offset to 2 degrees. This would work like this when the t-stat is set to 65 degrees and the room is cool:

Room Temp Furnace
63 On
64 On
65 On
66 On
67 On
68 Off

The room is now warm and heat or furnace is off. The room begins to cool like below:

67 Off
66 Off
65 Off
64 Off
63 Off
62 On

With a 1 degree offset, the room temperature varies +/-1 degree (about 2 degrees total). With a 2 degree offset, the temperature about varies +/ -2 degrees (about 4 degrees total).

Also, when the thermostat shut the heat off, the heat that was made is delivered to the space instead of wasted by sending outdoors - so the room will get a little warmer even though no fuel is being burned. The same holds true at the other end. When the t-stat turn heat on, fuel is burned, but there's little heat until the source has reached the optimum temperature and then the heat is delivered to the space.

I hope this helps & good luck! Pleas rate my reply - thanks!

Jan 24, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

I have a Honeywell programmable Thermostat (an expensive one that handles humidity, etc) and every spring and fall the thermostats behave improperly by ignoring the programmed temperature and cooling the...


What is the model number of the thermostat? What may be happening is the humidity control is trying to satisfy the humidity setting by running the a/c. In the installers set-up, there should be a setting to determine how long the system should run to satisfy humidity setting. I typically set thermostats for a 3 degree droop. Meaning it'll only drop 3 degrees below set temp. Also check your humidity setting to be sure it's not set too low. It should be set between 45% and 50%.

May 03, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Day / Night HVAC is running cool air BUT the furnace is running 2


Strange. Does the thermostat control both the air conditioning units and the furnace. If not make sure the furnace thermostat is turned down to below 65 degrees.

Jun 29, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

My home too is stuck at 78 degrees with the Chronotherm IV


a/c will only bring temp down about 15 degrees from outdoor temp

Jun 23, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Cannot set heat setting by using "hold" feature


make sure it is not telling you room temp, some of the Honeywells, will display room temp over desired temp. check that, if it wont let you switch temp than buy a new one, if you dont have a heat pump a new cheap stat is around 20.00.

Dec 31, 2008 | Honeywell Programmable Thermostat Heater

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