Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Could not program Honeywell RTH6350/RTH6450 Thermostat

I am trying to set up clocl time and schedule however dispaly flash set clock all the time once i try to press button to set up date or run schedule it won't let me

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: I need to reset the date and year

Hello,

I had exact same problem with RTH7500. Did not set the date properly at the beginning and than realized that there is no menu option to change the date after it is saved once (???!). I was very confused for few hours and wandering - trying to find changing option on thermostat menu; than I was looking online what can be done... I could not find solution...

Than I took out both AA batteries, open the thermostat (be very careful while doing this - you don't want to break plastic peaces that hold the thing together) and took out the button battery thinking that this will reset the thermostat... but it did not.

I repeated the same thing, but this time, while the button battery was out, I put two AA batteries back and this reset the thermostat... the old - blinking date appeared and I was very happy to see this on thermostat screen! This time I set the time properly and it works fine.

:)

Hope this will be helpful if you did not solve the issue yet... if you did, someone else might find this solution useful.

Posted on Aug 03, 2009

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SOURCE: Can't Program Clock for Honeywell RTH230B Thermostat

After you set the hr, min, and day, press the mode button.

Posted on Dec 21, 2009

kdgrayson
  • 195 Answers

SOURCE: I have a honeywell digital thermostat for my

Just use hold or call 800 honeywell

Posted on May 29, 2010

SOURCE: I HAVE A HONEYWELL T8600D

pknab, I have the same problem. And it comes down a few things: 1) the flashing 1:00 indicates that you've lost power, and the system needs to be reset. 2) Reset means taking out the batteries for longer than 5 minutes. 3) You have to change your filter monthly. There's one in the cold air return and another one in the furnace. If you don't, your FURNACE may be causing number one (my conjecture). 4) We had an electrical storm 2 days ago--nothing else in the house lost its sense of time...but...well...the online operating manual is difficult to find try http://customer.honeywell.com/techlit/pdf/69-0000s/69-1400.pdf or http://dl.owneriq.net/e/e67c2c91-73c2-4bd8-abc8-91d843a27658.pdf (but it doesn't tell us this stuff...I'm still looking for the meaning of the EEE in the display..perhaps I have repowered the thermostat/furnace in the wrong order).

Posted on Dec 16, 2010

  • 94 Answers

SOURCE: Honeywell RTH6350/RTH6450 Thermostats - Have two

The problem with the honeywell brand is that the only dependable units begin with TH not RTH the RTH is for residential and you can purchase those at a local home improvement store. Go on Ebay and spend the money for a quality t-stat. "you get what you pay for"

Posted on Apr 29, 2011

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Installed a rth6350 now no power


The RTH6350 is a battery-powered thermostat. Did you correctly install the AA batteries? Press down and pull the battery holder away from the thermostat on the right hand side. Try new batteries. Did you remember to secure the C wire with a wire nut and push it back into the wall. It should not be connected to the thermostat.

If you connected the C wire, you may have damaged the thermostat by providing too much current. Honeywell has the documentation for the RTH6350 on the product page: http://yourhome.honeywell.com/home/Products/Thermostats/5-2-Day-Programmable/RTH6350D.htm . The installation guide is here: https://customer.honeywell.com/request.cfm?form=69-2416ES . See page 23 and subsequent pages for the wiring diagrams.

I hope this helps.

Cindy Wells

Oct 11, 2014 | Honeywell RTH6350 5-2 Programmable...

1 Answer

My Honeywell T8001C doesn't allow me to change the indefinite temperature hold for some reason


It sounds like the thermostat is malfunctioning; the Set should not be flashing at all, only the Hld should show after pushing the hold button.
Do you have a new battery in the unit? Is it set to Heat or Cool? Is it already programmed for current Time/Date and does it have a schedule programmed in already? If you've lost the user manual it's here: https://customer.honeywell.com/resources/Techlit/TechLitDocuments/69-0000s/69-1431.pdf

Jul 06, 2014 | Honeywell Programmable Thermostat Heater

2 Answers

How to Set time on a rth6500wf


Press Done on the thermostat if you aren't at the home screen. Then press Set Clock/Day Schedule at the bottom left of the touch screen. Then use the up/down arrows on the right to set the time. Press Set Day (second from the right on the bottom of the touch screen) then use the up/down arrows to set the Day of the week. Press Done to exit the set clock menu. (Alternatively, press Set Schedule to continue to set your thermostat to your daily schedule.)

Honeywell has the manual available on their site: http://yourhome.honeywell.com/home/ . Enter the model number in the search box to find the available manuals. See page E36 (28 of the PDF).

I hope this helps.

Cindy Wells

Apr 25, 2014 | Honeywell Programmable Thermostat Heater

1 Answer

Trying to set temp on honeywell t-stat


I believe what your experiencing is the 75 degrees is the hold temp position...the display then reverts back to the actual room temperature...it doesn't mean the set temperature changed back to 65 degrees. Try to reprogram the thermostat schedules, and try not to use the hold function...just the temporary hold. (which is bumping the programmed temperature up or down until the next programmed period)

Dec 09, 2013 | Honeywell Programmable Thermostat Heater

2 Answers

Wiring with new Honeywell thermostat


You need to put battery in the new thermostat if you gonna leave the C terminal disconnected

Jun 21, 2017 | Heating & Cooling

1 Answer

Honeywell RTH6350/RTH6450 Thermostats - Have two that had to be replaced as heat would not work at all. Had Honeywell tech on for 1/2 hour he could do nothing from India!! Wondering if these were...


The problem with the honeywell brand is that the only dependable units begin with TH not RTH the RTH is for residential and you can purchase those at a local home improvement store. Go on Ebay and spend the money for a quality t-stat. "you get what you pay for"

Apr 27, 2011 | Honeywell Electronic Programmable...

2 Answers

My thermostat rlv4300 will not change periods at the schedule time. I've verify the time, even change it but nothing. For exemple when it should say 1st period the thermostat show 3 or when it should be 4...


After sending two emails to Honeywell support, they finally did admit to problems with these stats. The following statement is from Honeywell support.
Thank you for contacting Honeywell.We are aware about the issue with these thermostats. However, we have rectified the issue in newly available thermostats. You may purchase TH104plus which is a direct replacement.Hope this helps!

Jan 27, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

I have just moved home and we have a Honeywell CM61 Prog.Thermostat but no operating instructions.Can you help?


Push run program for a preset schedule, once in the schedule you can change times via up/down temp buttons, push next to set next schedule period and so on. Otherwise push hold temp or hold to overide the program and run as a regular stat, for more info 1800 honeywell or Google support.

Nov 01, 2010 | Heating & Cooling

2 Answers

Non-deletable schedule in VisionPRO TH8000


The thermostat has a function called "Adaptive Intelligent Recovery".

This feature allows the thermostat to learn how long the furnace and air conditioner take to reach programmed temperature settings, so the temperature is reached at the time you set. For example: Set the Wake time to 6 am, and the temperature to 70°. The heat will come on before 6 am, so the temperature is 70° by the time you wake at 6.

You can turn off this function. Download the installation guide at the next link:
http://customer.honeywell.com/honeywell/ProductInfo.aspx/TH8321U1006
and look for funcion number 0530 Adaptive Intelligent Recovery. In this manual you also find the way to do a reset with the function number 0710.

I hope this solves your problem.

Nov 19, 2008 | Honeywell Programmable Thermostat Heater

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