Question about Honeywell Programmable Thermostat Heater

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Heater on when not programmed

I have a 2 year old honeywell 5-2 programmable thermostat that turns system on during the night when it shouldn't.  Night time is set for 60deg and at 5:30 should change to 68deg.  This morning at 3:00am the fan was running so I checked the thermostat with following indications: - time was correct - program temperature was wrong - furnace was on, and temp was climbing to wrong temp
I suspect the honeywell, what do you think

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  • 96 Answers

Sounds like a bad t-stat , they have a 5 year warranty on them

Posted on Dec 28, 2008

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Thermostat is not coming on we are in san antonio is there help out there for us


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Heater fails to turn on it does not mean you have a faulty heating system ... 4th - Check programming on a programmable

Jan 10, 2016 | Honeywell Programmable Thermostat Heater

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The furnace comes on @ 70* when programmed to be 60* at night


you have to switch it to settings and reprogram it. find your owners manual and it will tell you how to program your thermostat

Dec 01, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

Whdoes it mean of wake, return, sleep and leave on honeywell digital thermostat


I believe it means (I assume winter weather in my example):
1. Wake - This is the time you wake up and you would set the temperature at the time you want it then. So, your temperature throughout the night might have been set at 63, and if your "wake" time on the thermostat is set to 6:00 am and 68 degrees, then your system will automatically adjust the temperature setting to 68 degrees at 6:00 am.
2. Leave - This is the time that you would typically leave your house for work. You probably don't need to heat or cool your house that much during this time especially if no one will be there. So, let's say you leave for work at 8:00 am. You would set this time for 8:00 am and 60 degrees.
3. Return - This is the time you get off work. Let's say you get off at 5:00 pm. You would set this time for 5:00 pm and 65 degrees. Then the system will start warming up at 5:00 pm and will be warmer by the time you get home.
4 - Sleep - This is for when you go to bed. Following the example, let's say that you set your temperature while sleeping to 63 degrees at 10:00 pm. Then, the system adjusts at that time and will adjust again as soon as then next parameter is met, which at this point would be the wake time.

This is usually for a Mon - Fri schedule and then a separate one for the weekend.

Jan 02, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

Thermostat is heating house to desired temp before programmed time


there is a installer setup in this thermostat. do you still have the book?
you will need to gain access to the installer setup/programming and in it you will find a setting called auto recovery turn it off. what this does is after a few days of initally running the system figured out it needed to come on earlier and is starting before the set time to come on... you can turn it off and then will have to adjust depending on insulation value/construction type of home how soon you want it to come on so that it reaches desired temperature when you want...
hope this helps you out,,,

Nov 21, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Set back thermostat has mind of its own.


The Honeywell Vision Pro 8000 can be complicated to figure out if it isn't set up right from the system menu. There are so many things that you can make it do, sometimes the most common things are wrong. My question is ''what kind of system do you have, heat pump or not?, and is the system gas or oil?" If I knew these things, I could definitely help you figure out if the thermostat is set up right. I have the manual so that I can give you exact numbers. Just in case, you can email me at : kingbrizzle@aim.com

Feb 06, 2010 | Honeywell Programmable Thermostat Heater

2 Answers

I have just had a new boiler fitted and wanted to run the thermostat (honeywell cm921) on auto, the electrician set the timer to come on at 1 & off at 2 disabled at 3 & 4 and on again at 5 and off...


Complicated because I need more info....but in General a Boiler should not be on a Programmable Thermostat as it takes too long to heat etc...do you have Radiators in your house???Or ductwork for heat???It will make a difference...if you put the boiler on a program it may come on anyway as some boilers maintain there own internal temperature regardless of the thermostat.....if you want to run it on a program adjust the temperatures so there is only about a 2 degree swing....70...down to 68....back to 70.....etc...there should also be a switch in the thermostat to set for Boiler...or Electric heat...make sure that switch is on...otherwise its difficult to give you a more conclusive answer

Nov 11, 2009 | Honeywell Programmable Thermostat Heater

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