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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Posted on Jan 02, 2017

  • 24 Answers

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

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.

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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1 Answer

Manual honeywell programmable thermostat


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

http://yourhome.honeywell.com/home/Applications/FindOwnersManual.aspx

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Trying to set thermal stat to cool


Look at the bottom of the T'stat or in the newer ones click menu and follow instructions to preset individual days or on some week and weekend if there is a switch at the bottom set it on the cool selection click the menu button if it has a next buttton then click it until it gets to the degrees and push the <or> button until you get to the temp you want it to be at and then click next until you have all the days programed to the temp you want it to stay at and when your finished push the done button if it has one and it should be programed for the cool side to set the heat set it to heat and do the same as you did on the cool part remember down for cool and up for heat on the degrees you set them on example if you set it 78 for the temp on cool and during the day you want it cooler set it to lower temp say76. if you set it 79 then it won't come back on until the temp is 79. Maybe this will help some programable t'stat are a little more complicated then this

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Its hard to say where its getting power from. It should be a normally closed two wire valve, so power must be fed from the tstat only? Not real sure how it's wired. You could try a round of MUSICAL THERMOSTATS? That would answer your question as long as its played properly.

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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.

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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.

Oct 29, 2007 | Honeywell CT3600 7 Day Electronic...

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