Honeywell RTH6400 Support Questions
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Most Popular Honeywell RTH6400 Questions
How To Connect The 2 Wires From My Existing Thermostat?
I just bought a Honeywell RTH6400 series thermostat but I have problems to connect it. My old 24v th...
I just bought a Honeywell RTH6400 series thermostat but I have problems to connect it. My old 24v th...
How To Open To Replace Batteries
How to open RTH6400D to replace batteries
How to open RTH6400D to replace batteries
Temperature Time Inbetween Run -off And Star Up Agin , How To Set That
the furnace come on to temperature shuts off and comes on again in10minutes can a time be set in the...
the furnace come on to temperature shuts off and comes on again in10minutes can a time be set in the...
Ambient Temperature Display Units
can you change the ambient temperature fron Farenheit to Celcius ?
can you change the ambient temperature fron Farenheit to Celcius ?
How To Change My Display To Celcius
how to i change my display to celcius on my honeywell RTH6400
how to i change my display to celcius on my honeywell RTH6400
Honeywell RTH6400 Answers
I Got Honeywell Rth6400d I Would Like To Programed In Celsius
Do a system setup, per https://www.manualslib.com/manual/802727/Honeywell-Rth6400-Series.html?term=S...
Do a system setup, per https://www.manualslib.com/manual/802727/Honeywell-Rth6400-Series.html?term=S...
Can I Change From Fahrenheit To Celsius? On Honeywell Rth 6400 ??
https://www.youtube.com/watch?v=DwJQuEE6Rp0How do you change Honeywell to Fahrenheit?How do you chan...
https://www.youtube.com/watch?v=DwJQuEE6Rp0How do you change Honeywell to Fahrenheit?How do you chan...
How To Change To Celsius
Honeywell does not document a facility to make that change. If it's possible, you'll have to consult...
Honeywell does not document a facility to make that change. If it's possible, you'll have to consult...
Ambient Temperature Display Units
Please check the video tutorial to know How to change thermostat Honeywell from Celsius to Fahrenhei...
Please check the video tutorial to know How to change thermostat Honeywell from Celsius to Fahrenhei...
How To Connect The 2 Wires From My Existing Thermostat?
One wire to R and one wire to W. Then hold the fan button and the up arrow til a service screen appe...
One wire to R and one wire to W. Then hold the fan button and the up arrow til a service screen appe...
All Honeywell RTH6400 Questions
I Got Honeywell Rth6400d I Would Like To Programed In Celsius
(Posted by joezizic1 2 years ago)
Can I Change From Fahrenheit To Celsius? On Honeywell Rth 6400 ??
(Posted by shema1 2 years ago)
How To Change To Celsius
how to change my honeywell rth 6400D to celsius?
how to change my honeywell rth 6400D to celsius?
(Posted by spazzkatz 3 years ago)
Rth6400d Wiring Question
My old thermostat had a black wire going to terminal C. Where do I put the black wire on my new HW R...
My old thermostat had a black wire going to terminal C. Where do I put the black wire on my new HW R...
(Posted by imagine585 7 years ago)
Run The Schedule
I have followed the instuctions to have the schedule run on my thermostat. but it will not. I push d...
I have followed the instuctions to have the schedule run on my thermostat. but it will not. I push d...
(Posted by smarti22 9 years ago)
Steps To Change Ferenheit To Celcius
(Posted by bubbles05 10 years ago)
Honeywell Rth6400 Series
I have mine set 4 ways througout the day. 78 for day and at 4:00 pm to change to 75 and 10:00 at nig...
I have mine set 4 ways througout the day. 78 for day and at 4:00 pm to change to 75 and 10:00 at nig...
(Posted by sready6 10 years ago)
I Not Sure My Connection
i have 4 wire, red, green, white and the orange.how connect wire correctly
i have 4 wire, red, green, white and the orange.how connect wire correctly
(Posted by steevebeaudry 11 years ago)
Hold Button
If you change the temperature and push the "hold" button, how do you release the "hold"?
If you change the temperature and push the "hold" button, how do you release the "hold"?
(Posted by pomalley012617823 11 years ago)
I Installed A Honeywell Rth6400d Thermostat In My Home
I installed a Honeywell RTH6400D thermostat in my home and when I installed it found that the heat w...
I installed a Honeywell RTH6400D thermostat in my home and when I installed it found that the heat w...
(Posted by barrycurcio 11 years ago)
Temperature Setting
do I have to set the temperature for each day of the week or can I just set one temperature for the ...
do I have to set the temperature for each day of the week or can I just set one temperature for the ...
(Posted by pomalley0126 12 years ago)
Is It Possible To Change Temperature Readings From Degrees F To Degrees C?
(Posted by donsallyf 12 years ago)
I Have A Honeywell Thermostat Ct3600a4451 How Do You Get 'filter' To Stop Flashi
(Posted by crayt77 12 years ago)