- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
Is My Thermostat Really Using All 8 of these Wires??
Posted on 10/27/18 at 9:30 am
Posted on 10/27/18 at 9:30 am
Tying to go smart or wifi with a new thermostat and it doesn't look like any of them can replace what I have. Is it possible that the installer (right at 10 years ago) went ahead and wired both a O and a B here at the thermostat, but only one of them is functioning? Outside unit is a Frigidaire ft4bd-060k heat pump. From a little bit of reading it seems very rare that the system would need BOTH a cooling and heating reversing valve signal. (If that is what I'm finding here) But both the nest online tool and the ecobee support said that they couldn't handle as system with both the O and B wires.
TIA OT Hvac Pros!
TIA OT Hvac Pros!
8
Posted on 10/27/18 at 9:39 am to Kingpenm3
No HVAC pro but I did buy one of those and I did not have one wire coming from the unit I needed for the thermostat to work. I can’t remember what it is called but I had to call a guy out to run it for me.
Read your instructions and see if you have all the wires coming to the thermostat you need. If you do it is easy to install and I love mine. I put it on my camp so I can check on it.
Read your instructions and see if you have all the wires coming to the thermostat you need. If you do it is easy to install and I love mine. I put it on my camp so I can check on it.
Posted on 10/27/18 at 9:40 am to Kingpenm3
You’re in over your head. Hire a professional
Posted on 10/27/18 at 10:12 am to Kingpenm3
I switched to a nest and installed myself. The website gives a wiring diagram. My old one used jumper wires and the nest did not need them.
Check the manufacturer website.
Check the manufacturer website.
Posted on 10/27/18 at 10:13 am to Kingpenm3
O is your “on” switch.
B is your “burner”.
So yes, I think you need them both.
B is your “burner”.
So yes, I think you need them both.
Posted on 10/27/18 at 10:37 am to Kingpenm3
its been a while so i cant recall them all but.....
red - 24v positive wire to power thermostat
black - 24v negative wire to power thermostat
orange - heat pump solenoid valve
blue - this is normally a 24v negative wire but can also be a 24v positive second stage cooling wire depending on the system
brown - first stage electric backup heater
white - second stage electric backup heater
green - fan motor
yellow - a/c compressor
red - 24v positive wire to power thermostat
black - 24v negative wire to power thermostat
orange - heat pump solenoid valve
blue - this is normally a 24v negative wire but can also be a 24v positive second stage cooling wire depending on the system
brown - first stage electric backup heater
white - second stage electric backup heater
green - fan motor
yellow - a/c compressor
Posted on 10/27/18 at 11:11 am to I B Freeman
quote:
No HVAC pro but I did buy one of those and I did not have one wire coming from the unit I needed for the thermostat to work. I can’t remember what it is called but I had to call a guy out to run it for me.
C Wire
Posted on 10/27/18 at 11:15 am to Kingpenm3
quote:You already know how to hook them up.
1-8-4-3-6-5-7-2
Posted on 10/27/18 at 11:18 am to Kingpenm3
Some of those are for the hidden cameras.
Posted on 10/27/18 at 11:29 am to Teddy Ruxpin
FYI- if your new thermostat is a nest, please run a c wire or get an adapter.
There are known issues with nests not configured with a c wire.
There are known issues with nests not configured with a c wire.
Posted on 10/27/18 at 11:41 am to Crop Dusting
quote:
You’re in over your head. Hire a professional
Posted on 10/27/18 at 11:50 am to Kingpenm3
There is generally a number for technical help from the manufacturer...I would call that number and they can talk you through this kind of issue pretty easily.
Page 1 of 1
Back to top
Follow TigerDroppings for LSU Football News