Question about Honeywell Programmable Thermostat Heater

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Honeywell Thermostat Problem

I've noticed several times this winter my heater not being on when it should be. My round Honeywell thermostat is set at 70 and this morning the thermometer read 64 (heater was not on). On these occasions, I "fix" the problem by placing the thermostat switch to OFF and then back to HEAT. The heater kicks on and warms the house. Is this a thermostat problem. Thanks...Bob Sent via Deja.com # Before you buy. I have a honeywell CT2700A1019. The themostat is set at 66 and is reading 57. The blower is blowing but the air is cold.

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  • Anonymous Nov 18, 2008

    I have the same problem with my thermostat. I thought I had solved the problem by replacing the batteries on Sunday, but today (Tuesday) I had to reset the furnace by turning it off. Any suggestions? Jackie

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4 Suggested Answers

mikadot
  • 2113 Answers

SOURCE: i have a honeywell thermostat t6360.the light

Many thermostats have battery backup as well as the 24 volt ac. Have you replaced the batteries to see if it fixes all of your issues at once?

Posted on Nov 02, 2013

dorothyslaug
  • 5 Answers

SOURCE: The middle of the touchscreen of my Honeywell

it not a touch screen, its manual old style honeywell, square box, not round, not rectanglur.

Posted on Nov 03, 2013

Testimonial: "It is a touchscreen. I have seen references to the battery being round and lithium CR2450; however, not sure if this is accurate. Does anyone know?"

  • 571 Answers

SOURCE: round honeywell thermostat

Sounds like you have a T86 thermostat...take the round front cover off to view the Mercury switch. Watch the bulb when you change the temperature to a higher setpoint. If the bulb makes contact when rotating it up, and the furnace doesn't go into a call for heat, then it could be the thermostat, wiring, or furnace problem.

Posted on Dec 15, 2013

  • 571 Answers

SOURCE: my honeywell thermostat has a flashing message of (bat lo) what does this mean?

Replace the batteries...should be double A's

Posted on Dec 17, 2013

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