Question about Honeywell CT3600 7 Day Electronic Programmable Thermostat Heater

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Have a Honeywell CT3600 Thermostat. Temp won't go below 85

Won't cool below 85 during the day and 70at night. We live in Houston so this is not good when it is 105 outside

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Honeywell Digital Thermostat won't click on if temp is below 59

do you live there? if so here are the rules for setting back temperature: do not lower the temperature more than 8 degrees F from the temperature you want it when your there, setting it back for periods of less than eight hours is also somewhat futile. Due to laws of thermo-dynamics the heat required to recover from more extreme setbacks or shorter periods of time exceeds the savings acquired by taking said action. As to your question directly there are no reasons why your thermostat should not function at any setpoint temperature that it is allowed to set to (45 normally being the lowest) if it does not function below 58 degrees it has a failure and should be replaced before it fails completely. Suggest a Robertshaw or Braeburn brand thermostat, Honeywell quality has slipped over the past decade to unacceptable levels. Unless your considering a Hunter in which case buy another Honeywell.

Posted on Dec 18, 2008

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SOURCE: EEE error message

I just talked to Honeywell support - they claim that an eee error means there has been a "unique error" and that the unit will need to be replaced - cannot be fixed. They were pretty good about giving a suggestion for a new thermostat and wiring directions if you want to DIY. Otherwise, call a pro.

Posted on Oct 11, 2008

  • 19 Answers

SOURCE: My Honeywell chronotherm IV Plus thermostat intermittent problem

The Chrono Therm 3 and 4's were some of the worst products that honeywell has EVER put out. I would suggest switching to the Vision Pro 8000, please consult your local HVAC company for more information regarding the change over.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/cody_17f08cf8e340c06c

Posted on May 17, 2009

  • 6 Answers

SOURCE: Honeywell thermostat won't regulate temp properly

Is there a setting on your thermostat that makes the unit stay on for 10, 15, 20, 25 minutes after you reach set temp. You can change this setting by looking at your manual for the thermostat. Not sure if there is one for this thermostat but mine has one. Mine was running 15 min after set temp and making it cool down 2 degrees lower than set temp. Hope this helps.

Posted on Jun 25, 2009

  • 80 Answers

SOURCE: EEE display code error on CT3600 Honeywell

I am a honeywell dealer and this stat is obsolete and no longer supported. I am not able to pull any info on this. It might be time for a new one.

Posted on Oct 07, 2009

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Manual honeywell programmable thermostat


Follow the below link, select thermostat on the upper box, then type CT3600 on the lower box.

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Please rate if this helps :)

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