20 Most Recent Honeywell Programmable Thermostat Heater Questions & Answers


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... • Answered on Jan 28, 2023

Hi, I have just changed the bateries of a Honewell

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12/5/2022 4:54:50 PM • Honeywell... • Answered on Dec 05, 2022

How to unlock my Honeywell T6

Question moved from Cellphones. Installation and Operation Manuals in the link. https://www.google.com/search?q=honeywell+t6+thermostat+manual Page 19, you need a PIN number https://digitalassets.resideo.com/damroot/Original/10003/33-00410EFS.pdf?rv=3dcd3b3ec88147a5b92a322f6da2a211 ....
9/30/2022 2:56:59 PM • Honeywell... • Answered on Sep 30, 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... • 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... • Answered on Nov 04, 2021

Where can I get the wiring diagram for a Honeywell T834C2192 Thermostat please?

Question edited to add 'make model (what it is)', which is needed for all questions of this type. Question moved from Cars and Trucks category to Honeywell Thermostat. http://aw.absolutaire.com/docs/component_docs/indexed/161.pdf It shows is as a very obscure Australian model (we are in North America). Listed as T822 Series Mechanical Thermostats Here is the manual https://www.houseneeds.com/upload/pdf/honeywell-t822install.pdf It describes it on Page 3 as; The T822 Thermostat controls 2-wire, 15 Vac to 30 Vac, gas, oil or electric heating-only systems. Installation and wiring are here https://www.engineeredair.com/parts/9dt2xkJ39.pdf A tortuous and long winded route that took 20 minutes to get there :>D ..
10/27/2021 11:25:46 PM • Honeywell... • Answered on Oct 27, 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... • 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... • 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... • Answered on Dec 21, 2020

What thermostat will replace a T8131C1012

Honeywell RTH6350 Model.
12/5/2020 4:17:17 PM • Honeywell... • Answered on Dec 05, 2020

Honeywell RTH221. Need user guide for thermostat, do you have?

Request the user guide directly from Honeywell.
11/1/2020 7:48:01 AM • Honeywell... • Answered on Nov 01, 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... • Answered on Jun 06, 2020

On he honeywell pro series display...what does the triangle with exclamation mark in it mean?

Can be Low Battery Warning or Air Filter Reminder. 68307516_756645481420735_7688301075442434048_n-u3urdmfo3kv00dnpnoztjq21-2-2.jpg68289101_349062152645264_5909936129565523968_n-u3urdmfo3kv00dnpnoztjq21-2-0.jpg
8/15/2019 6:45:59 PM • Honeywell... • Answered on Aug 15, 2019

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... • Answered on Jun 22, 2019

My CM921 is displaying a

3/2/2019 6:05:53 PM • Honeywell... • Answered on Mar 02, 2019

Batteries died on my honeywell RTH230B replaced but furnace won't

you will have to reprogram it according to the operating manual.
The manual is available on www.manualnguide.com
1/2/2019 11:36:48 AM • Honeywell... • Answered on Jan 02, 2019

Honeywell th8110u1003 touch screen frozen working

It sounds "locked". Refer to the installation/setup manual that came with the tstat for information on how to lock and unlock the thermostat.
12/30/2018 5:49:31 AM • Honeywell... • Answered on Dec 30, 2018

Remote not workin

what's happened here is the cm61 ng and the reciver box have lost there connection you will have to "rebind" them then it will be fine -


· Any of the system components (room unit or relay box) are replaced

· HC60NG has incorrect or no binding data stored (e.g. when pre-bound system pack components have been mismatched)

· Interference with the RF signal has caused a communication failure

During the binding procedure keep approximately 1m distance between the room unit and the HC60NG

1 Turn off mains supply to HC60NG for 10 seconds. Re-connect supply.

2 Press and hold the HC60NG push button for 15 seconds to reset previously stored data. The red LED will start to flash at 0.1 s on/0.9 s off. Release the push button.

3 Press and hold the HC60NG push button for 5 seconds to enter the binding mode. Red LED flashing at 0.5 s on/0.5 off confirms the binding mode has been entered.

4 Move the CM67NG slider to the OFF position (CM61 push the OFF button) and press the TEMP , TEMP and PROG 1 buttons together. The CM61/67NG will display InSt.

5 Press the i button to send the binding signal. The red LED is switched off on the receiver box to confirm the successful binding operation. If the red light still flashes push the repeat steps 1-3 and press the the i button until binding is successful.

hope this is helpful
12/5/2018 5:44:30 PM • Honeywell... • Answered on Dec 05, 2018
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