Wanted to change out my RV thermostat. Took the old one off and found those troublesome blue and gray wires. There are no matching color letters on the new one. Yikes, what NOW! I was so happy to find your video. Just so happened I was changing out a Coleman Mach to a Honeywell just like you. I was so happy. All done now after finding out I didn't need those wires after all. Thanks for posting 😊
AC timedelay....It's a good thing to have. It allows the AC compressor to release pressure before restarting. That way it won't lock up the compressor.
I believe Blue is 12+ from the furnace to power the tstat, which won't work for the Honeywell because it's made for 24v. The RV tstat closes the circuit with the white wire to turn on furnace. This is how the newer digital Dometic and mach tstats work without batts. For me I don't really consider it an upgrade if I have to replace batteries.
So that would explain why it didnt work for me 🤦🏽♂️ it says 12+ and 12- on the Dometic I took off and it does nothing when ai put the Honeywell on with the same wire mentioned in the video
Yes I just installed one 9n my camper do to the coleman mack thermostat going bad. Thank God for this video. Vary help full I do have the same problem my back l8ght does not work. I well try a nother one
Thanks for your video. I had to install the control Board for my Coleman Mach AC and I have the same Coleman thermostat and want to replace it with this one. I have 2 wires from the furnace thermostat which is red 12v and white. This is simple to understand and wire it just acts like a switch when I turn on the furnace. Also the diagram for control board has -12v blue wire, yellow is the compressor, grey to low fan, and green to high fan. I do not have red +12v going to AC but instead have a Blue -12v. So I'm a little confused that you do not wire up blue. Are you using Coleman Mach AC? I don't see how yours works without -12v unless your control board takes the +12v. It would have been nice if you did not snip wires from the old thermostat but pulled them out further so I could see the thermostat wiring going to AC. Possibly what we do not see is -12v blue is spliced going to control board of AC and that is why it works? I am guessing you have the -12v run to AC and if wired to the thermostat you would not need batteries? I'm a little nervous to install this thermostat as control board is working with the analog Coleman Mach thermostat. I have -12v I can jump off of going to gas monitor near the thermostat. Should I run that to control the board of AC and bypass thermostat or run to thermostat as also? Update: Thermostat installed. I chose low fan option also. I found a video that confirms what I thought. The -12v blue was connected to a -12v source and goes to AC control board. czcams.com/video/Ce3y4fgFvak/video.html Still not sure about if I should also run blue to the thermostat... Thanks your video it helped.
The AC delay has to do with charge pressure being higher since it was running and the delay allowed the pressure to drop so it is not hard to start the compressor
Hi Jimmy. My name is Luis. Can you help me out here. For some reason the Honeywell you suggested is not working for me. The difference is I have only 3 wires that I need to connect? Can you please help??
Good video on the installation. Yes the grey wire is low fan speed. I installed mine with the grey wire so that it runs the AC on low fan speed. I like that it is quieter and since the unit cools more slowly, it dehumidifies more.
I have two different digital thermostats my experience has not been good my coleman with blue tooth this has multiple issues, junk. My rv comfort zc, is even more trouble, i would much rather have the analog thermostat.
If you have a thermostat attached to same wall that is the other side of fridge it will pick up heat from the back side of fridge. Thanks jayco. Never buying another jay😢
For this model, thebacklight should come on assoon as you touch any of the arrows that adjust temperature. If you're doesn't light up you may have a defective unit. I'd contact the store to get a replacement since the backlight is an important feature in the evening. Best of luck to you and thank you for commenting.
Will the thermostat work when power goes out and it goes on battery power to run blower on propane heat - it does on current RV thermostat but it’s not programmable like I would like
You'll have to do some research. If yours was not these colors there are forms for your specific rv that will break down the possible colors. Good luck on your install. You'll figure it out.
Bonjour Je dois remplacer ce vieux thermostat de notre vr et nous voudrions savoir si j’achète celui dans votre vidéo Est-ce que serait bon même si se n’est pas le même système de fil on dirait Dites moi un adresse e-mail, je vous montrerai, en photo, le mien qui est mort lol
Wanted to change out my RV thermostat. Took the old one off and found those troublesome blue and gray wires. There are no matching color letters on the new one. Yikes, what NOW! I was so happy to find your video. Just so happened I was changing out a Coleman Mach to a Honeywell just like you. I was so happy. All done now after finding out I didn't need those wires after all. Thanks for posting 😊
AC timedelay....It's a good thing to have. It allows the AC compressor to release pressure before restarting. That way it won't lock up the compressor.
I believe Blue is 12+ from the furnace to power the tstat, which won't work for the Honeywell because it's made for 24v. The RV tstat closes the circuit with the white wire to turn on furnace. This is how the newer digital Dometic and mach tstats work without batts. For me I don't really consider it an upgrade if I have to replace batteries.
So that would explain why it didnt work for me 🤦🏽♂️ it says 12+ and 12- on the Dometic I took off and it does nothing when ai put the Honeywell on with the same wire mentioned in the video
The battery's are light on display. Last really long time
Great video. Replaced tstat in my 2016 Pioneer QB300bh. Everything works a ok! Thanks
How did you figure out which wire went to what you skipped that whole part and that’s the most important part 😂
Yes I just installed one 9n my camper do to the coleman mack thermostat going bad. Thank God for this video. Vary help full I do have the same problem my back l8ght does not work. I well try a nother one
good night-fantastic ! all the best.🤟
Yes that worked fine for me as well
Thanks for your video. I had to install the control Board for my Coleman Mach AC and I have the same Coleman thermostat and want to replace it with this one.
I have 2 wires from the furnace thermostat which is red 12v and white. This is simple to understand and wire it just acts like a switch when I turn on the furnace. Also the diagram for control board has -12v blue wire, yellow is the compressor, grey to low fan, and green to high fan.
I do not have red +12v going to AC but instead have a Blue -12v. So I'm a little confused that you do not wire up blue.
Are you using Coleman Mach AC? I don't see how yours works without -12v unless your control board takes the +12v.
It would have been nice if you did not snip wires from the old thermostat but pulled them out further so I could see the thermostat wiring going to AC. Possibly what we do not see is -12v blue is spliced going to control board of AC and that is why it works?
I am guessing you have the -12v run to AC and if wired to the thermostat you would not need batteries?
I'm a little nervous to install this thermostat as control board is working with the analog Coleman Mach thermostat.
I have -12v I can jump off of going to gas monitor near the thermostat. Should I run that to control the board of AC and bypass thermostat or run to thermostat as also?
Update: Thermostat installed. I chose low fan option also.
I found a video that confirms what I thought. The -12v blue was connected to a -12v source and goes to AC control board.
czcams.com/video/Ce3y4fgFvak/video.html
Still not sure about if I should also run blue to the thermostat...
Thanks your video it helped.
The AC delay has to do with charge pressure being higher since it was running and the delay allowed the pressure to drop so it is not hard to start the compressor
Exactly right. I was going to say that same thing
thank you so much for helping me!!!
Does the fan cut off when set temp is met?
Hi Jimmy.
My name is Luis. Can you help me out here. For some reason the Honeywell you suggested is not working for me. The difference is I have only 3 wires that I need to connect? Can you please help??
Good video on the installation. Yes the grey wire is low fan speed. I installed mine with the grey wire so that it runs the AC on low fan speed. I like that it is quieter and since the unit cools more slowly, it dehumidifies more.
What wire did you switch with the grey wire for low fan speed?
What wire did you switch with the grey wire for low fan speed?
What wire did you switch with the grey wire for low fan speed?
What wire did you switch with the grey wire for low fan speed?
What wire did you switch with the grey wire for low fan speed?
Very informative. Thank you.
I have two different digital thermostats my experience has not been good my coleman with blue tooth this has multiple issues, junk. My rv comfort zc, is even more trouble, i would much rather have the analog thermostat.
Will this thermostat work to replace the Dometic thermostat and also can use it just for the AC unit in the bedroom of the coach with the thermostat
Je voudrais vous envoyer une photo mais je ne vois l’option pour le faire🤷♀️
If you have a thermostat attached to same wall that is the other side of fridge it will pick up heat from the back side of fridge. Thanks jayco. Never buying another jay😢
I can't seem to locate a high low switch option. Any ideas?
Ours had a strap bw RH and RC- leave or remove??
well done. clear. question: did you have to do anything special to have the backlight come on? mine doesn't. thanks
For this model, thebacklight should come on assoon as you touch any of the arrows that adjust temperature. If you're doesn't light up you may have a defective unit. I'd contact the store to get a replacement since the backlight is an important feature in the evening. Best of luck to you and thank you for commenting.
Did you ever get your back light fix I just installed the same thermostat my back light don't work nether.
Will the thermostat work when power goes out and it goes on battery power to run blower on propane heat - it does on current RV thermostat but it’s not programmable like I would like
Yes it will.
Mine doesn’t have a green but has a black wire 🤦🏻♂️ now what please help!
You'll have to do some research. If yours was not these colors there are forms for your specific rv that will break down the possible colors. Good luck on your install. You'll figure it out.
My ac and my furnace don’t work. Only the fan switches on.
Jimmy2 - did you just leave one of the fan speed wires unterminated so the unit only runs on one fan speed?
Thanks!
Yes he did. That's the wire he tucked in the wall.
Bonjour
Je dois remplacer ce vieux thermostat de notre vr et nous voudrions savoir si j’achète celui dans votre vidéo
Est-ce que serait bon même si se n’est pas le même système de fil on dirait
Dites moi un adresse e-mail, je vous montrerai, en photo, le mien qui est mort lol
Only want high and low for AC ! AS PROPANE STILL HEAT HEAT EXCHANGER AT ONLY ONE RATE WILL CAUSE FIRE IF HIGH LIMIT SWITCH IS MALFUNCTIONING 💔💔💔💔💔💔💯