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Honeywell digital CT2700 thermostat is blank. I have Two zones, one for the first floor and one for the second floor. The second floor thermostat is working, but the first floor thermostat stopped working and is just blank. It was working for the last week and then stopped. I check the circuit breaker and reset it just in case but it did not work. Should i just get a new thermostat or could it be something else

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Posted on Jan 02, 2017

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SOURCE: Honeywell T86A3006 24V Class 2 Round thermostat 8020

The honeywell tradeline thermostat would work as a direct replacement (no mercury in the new ones), however if your using just heaters and no cooling system off of it, you could Heat only thermostat from honeywell that would replace your unit as well. Both at available at Ace Hardware with the heat only unity being roughly 7 dollars cheaper.

Posted on Jan 23, 2008

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SOURCE: Honeywell electronic thermostat malfunction for oil heat zone

Try changing the batteries.

Posted on Mar 04, 2008

  • 5 Answers

SOURCE: Replacing Round Honewell Mercury Thermostat

try to get one that is made for oil heat, the installation is easy only two wires, and the instructions make it easy.

Posted on Apr 26, 2009

  • 9 Answers

SOURCE: t8411r1028 honeywell thermostat blank screen where would fuse be?

That thermostat should get power from 24V side of a transformer in the air handler. There should be a fuse in there on the PCB, but just as likely, there may be a 2-wire sensor in your drain trap that will shut it down if it senses water backing up in the drain piping. Clear that line from the outside of your house with a shop vac, cycle the breaker for the air handler if needed. You may also be low on freon, though, so a service call might be a good idea anyway.

Posted on Oct 06, 2009

SRF518
  • 232 Answers

SOURCE: Honeywell T8411R 1028No power to the thermostat; breakers are not

site shows this thermostat is a non programmable unit and has been discontinued. none of the info sheets including a pdf shows a replacement battery. this thermostat operates off line voltage only. check for a control fuse or breaker on your heating unit.

Posted on Oct 17, 2009

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