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Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater Questions & Answers
I need to reset the date and year
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.
11/6/2022 2:03:55 AM •
on Nov 06, 2022
What wires go to what
The colors you have are not standard.
Your going to have to see where the wires connect on your appliance to answer this. find out and post back
2/11/2021 11:41:35 PM •
on Feb 11, 2021
I have a programable honeywell
If you want clean air without changing the temperature and without using as much power as on the A/C setting then put it on "Circulation" which just means you'll just filter dust etc out of the air. If you want to change the room temperature put it on Auto at your desired temp this will filter the air longer as it's running more but it will use more power than Circulation there's only a better setting if you tell me your exact requirement eg do you want to cool the room or just clean the air, or clean the air saving power??? otherwise if you don't care about the power cost then the "On" setting is the best as it filters non-stop and cools the air non-stop. Cheers
1/2/2019 7:26:45 PM •
on Jan 02, 2019
I have a blinking snowflake icon on my air
When the snowflake is blinking the thermostat in in a delay mode designed to protect your compressor. If it does not stop blinking in 15min the stat is bad otherwise something is wrong with the AC
12/21/2018 2:24:09 AM •
on Dec 21, 2018
Cooling limit on th320u
the cooling setting will not go below the heating setting. lower the heating setting so you can lower the cooling
1/16/2018 6:55:57 AM •
on Jan 16, 2018
70 to 72 degrees maximum surely now we are all supposed to be pulling together to save our planet???
I suggest you download the instructions for your type of thermostat. If the thermostat doesn't work per instructions it is obviously faulty.
You could contact Honeywell for advice over such an important matter.
11/17/2017 10:21:04 AM •
on Nov 17, 2017
Gas heater short cycles
At your indoor unit, look at 1 of the front panels and see if there is a clear, plastic view port. Look through it and try to see a red flashing led. Count the flashes and look at the factory data on the front of the unit. That should give us a trouble code and lead us in the right direction. Also make sure air filters are clean.
8/25/2017 12:54:43 PM •
on Aug 25, 2017
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