I have completely re-programmed my thermostat and my thermostat says that i want it to be 70 degrees but it does not heat, coldest I have had it without the furnace coming on and desired temp being 70 is 55. It appears that on sleep mode at 10:00 at night it kicks on and heats to my desired tem, but then stops heating and my home goes back down to 50-60, when my desired temp is still 70. I have the owners manual, I have programed it many times now, I have done the "Hold temp" I have checked the furnace and I have checked my AM/PM time settings and only "SLEEP" mode will work at night. what is going on?
-   I changed my batteries and now my system is stuck on hold 70 and my house is freezing. Please help-   rbudd16
Dec 20, 2008
-   We have the same heat problem. At times we were able to get it to run with the Hold setting. Now that does not even work. Thinking of buying new Term unless someone out there has a fix.
-   have same problem rhe sleep mode does not work correctly. please tell of fix. thanks n njj geddes
-   Guest
Jan 18, 2008
-   Have the same problem can anyone shed some light on this? Mine is set as follows: WAKE 70 LEAVE 60 RETURN 70 SLEEP 60, it just stays on 60 all the time now. The only way i can get the program to warm up is to switch it off then back to heat then it kicks in?-   flnycus
Dec 28, 2007
-   just moved into new house. Have a Honeywell Chronotherm 111 a/c but no manual as to how to programme it. Can't seem to be able to turn it off and turn it on only when I choose - would love to have some sort of manual / instructions on EXACTLY how to use this unit. Everyting has been hit and miss since moving in 3wks ago - please help
I have one humidistat honeywell H8908B which presently controlls honeywell humidifiers(HE440A ). I...
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I have one humidistat honeywell H8908B which presently controlls honeywell humidifiers(HE440A ). I am adding the HM512 onto the second furnace and trying to wire into the exisiting 440a. the 440a presently controlls both furnaces and works ok. can i wire and make the HM512 a slave ? and it still has to fill up with water an shut off by itself. i want both to act as one,but having the 440A keep controll of the fans. the service tech added a seperate two pole relay and spiced into to blue wire on the 440 and one side of the humidistat conector. also he set the number 4 dip switch on. this wiring left me with a over heating 512, it was super hotn to touch on the outside of the unit eventhough the main 440A was off.please help
I am getting six blinks on the call for service light after I push the reset button.What does that...
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I am getting six blinks on the call for service light after I push the reset button.What does that mean?
Chronotherm III...Replace Battery notification blinking...replaced twice with the appropriate...
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Chronotherm III...Replace Battery notification blinking...replaced twice with the appropriate batteries, turned the correct way. Cleaned off the battery terminals and still have replace battery notification?
"replace better" msg light came on; I replaced with 3 AAA Alkalines...3 days later, same...
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"replace better" msg light came on; I replaced with 3 AAA Alkalines...3 days later, same message- replaced AAAs again, with what are absolutley fresh ones, same msg. Is there a backup batter somewhere on this unit that needs replaced? The manual does not indicate or show or mention a backup battery...stumped, 'HEP! thx, ed zeppelin the temperature guy