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Honeywell Programmable Thermostat Heater Questions & Answers
Flashing battery symbol
I had this same problem today. I called Honeywell and they said the flashing broken battery symbol may mean low batteries, or it may mean the battery type is incorrect. They recommend only non-rechargeable alkaline batteries. I was using rechargeable NiMH batteries. Even though they were fully charged, I had the flashing battery symbol and the thermostat relay would not work. I replaced with alkaline, the flashing battery indicator went out, the thermostat works again.
Odd that it worked for 3 months on the rechargeables after first install. I did notice the broken battery symbol came on after the first few days, but I checked the battery charges and they were good, so I disregarded the symbol until the thermostat stopped working today. Apparently there is something about the NiMH performance characteristic that the thermostat doesn't like.
11/26/2023 2:45:33 AM •
Honeywell...
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Answered
on Nov 26, 2023
Red LED on honeywell r6660d
The problem is that the 2 units are "not speaking to each other". this could be caused by low batteries or a loss in signal caused by a powercut or an objection in the way of the 2 units.
first you need to turn the power off to the r666od (or otherwise known as the HC60NG) for 10 secs, then turn back on. then hold the grey button in for 15 secs. release then hold in for a further 5 secs.
go to the honeywell cm61 press the off button. hold temp up. temp down and prog 1 in for 3 secs until the dipslay goes to INST. at this point release all 3 buttons then press the i button until a beacon starts flashing.
this is now the end to your problem.
N.B the reason the green light was on is because the man override button will have been pressed.
hope this helps
1/28/2023 11:44:53 PM •
Honeywell...
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Answered
on Jan 28, 2023
Hi, I have just changed the bateries of a Honewell
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My name is Bruce
12/5/2022 4:54:50 PM •
Honeywell...
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Answered
on Dec 05, 2022
Adptive intelligent recovery
On the Pro4000 model you hold the 2 arrows until you go into setup mode. Then arrow up ONLY til you get to option 13. The display will read 13 and 1, press the DOWN arrow and it will read 13 and 0. This turns off Adaptive Intelligent recovery. Now hold the 2 arrows til you see the normal display screen. You are done.
I just did this with a Honeywell tech rep on the phone.
11/24/2021 2:58:51 PM •
Honeywell...
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Answered
on Nov 24, 2021
I have a Braemar Spectrolink
it gets its power from the unit via the data cable. go on the seely international website or the braemar website and they can put you in contact with another dealer in your area. get it fixed while still in warrenty.
11/4/2021 8:52:06 PM •
Honeywell...
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Answered
on Nov 04, 2021
How do I switch the honeywell RTH4300B thermostat from reading in Fahrenheit to Celsius?
To start you have to push and hold the up and down buttons simultaneously until the screen displays "setup" across the top. There will be a number on the left, and a number in the right. Press the UP arrow until the number on the left reads 14, The number on the right should read 0. Press the DOWN arrow to change it to 1. Once this has been done you can press the RUN button to save the changes, and exit the setup screen. Your display will now read Celsius,
6/28/2021 3:56:16 AM •
Honeywell...
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Answered
on Jun 28, 2021
Honeywell chronotherm iv fan keeps running even
To turn the fan off, press the "fan key" until it says "auto". This will turn the fan off. When the programs scheduled, changes, the fan will go on again. You have to repeat the fan to "auto" each time the schedule changes.
6/23/2021 8:16:59 AM •
Honeywell...
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Answered
on Jun 23, 2021
Thermostat burning walls
your thermostat may not be made for electric heat, if not then your wiring is overloading the thermostat causing the wires to heat up.
12/21/2020 12:12:28 AM •
Honeywell...
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Answered
on Dec 21, 2020
HONEYWELL RTH230B Display is Blank. This
I had blank screen also. I placed my screwdriver between the battery terminal and battery tab and voila the screen turned on. I removed the batteries, pulled the tab out, replaced the batteries, and the thermostat is working like a champ again.
6/6/2020 4:52:06 PM •
Honeywell...
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Answered
on Jun 06, 2020
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
6/22/2019 7:21:44 PM •
Honeywell...
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Answered
on Jun 22, 2019
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