Thermostat wired wrong?
#1
10-07-06, 11:09 AM
Thermostat wired wrong?
Hi, I suspect my prog. thermostat is not wired correctly.
The fan blows 24/7, regardless of whether the thermostat is set to manual or auto, regardless of whether the override switch on the blower is set to manual or auto. I can't make it stop, ever.
I have an older York furnace, central a/c and a Honeywell prog themostat.
I have two bundled wires coming from the wall. One set is B&W the other set is B&W&R.
Currently the B&W set is wired as Black to the "R", and White to the "W".
The three way bundle is Black to the "G", Red to the "Rc" and White to the "Y".
Does this sound correct, what can I try to fix this? Any help would be greatly appreciated.
Thanks
Tom.
The fan blows 24/7, regardless of whether the thermostat is set to manual or auto, regardless of whether the override switch on the blower is set to manual or auto. I can't make it stop, ever.
I have an older York furnace, central a/c and a Honeywell prog themostat.
I have two bundled wires coming from the wall. One set is B&W the other set is B&W&R.
Currently the B&W set is wired as Black to the "R", and White to the "W".
The three way bundle is Black to the "G", Red to the "Rc" and White to the "Y".
Does this sound correct, what can I try to fix this? Any help would be greatly appreciated.
Thanks
Tom.
Last edited by browntg; 10-09-06 at 07:53 AM.
#2
10-07-06, 02:13 PM
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Thermostat
Did you label the wires when you took them off of the old stat?
If you did not, it is either going to take some trial & error (not a good way), some detective work, or an ohm meter.
If you did not, it is either going to take some trial & error (not a good way), some detective work, or an ohm meter.
#4
10-07-06, 07:05 PM
Im with Grady you have to ohm or as called ring the wires out. Find out what is what on the wires,
R is power put a jump (R to RC ).If you dont have two transformers W is heat.
G is for fan. Where is your Y for the AC you say you have.
Did you set the tstat for the furnace you have there right . Read the paper you got with the tstat..
ED
R is power put a jump (R to RC ).If you dont have two transformers W is heat.
G is for fan. Where is your Y for the AC you say you have.
Did you set the tstat for the furnace you have there right . Read the paper you got with the tstat..
ED
#5
10-09-06, 07:57 AM
Typo
Sorry my bad. The three way, white is connected the to "Y".
Currently the B&W set is wired as Black to the "R", and White to the "W".
The three way bundle is Black to the "G", Red to the "Rc" and White to the "Y".
The system is forced air. I do have a multimeter, if someone can tell me what to check for to identify the wires.
The system is forced air.
Yes, the thermostat is set correctly, ect. The wires were labeled when it was changed, but something got crossed. I thought I had saved the labels, but can find them or the previous tstat.
Given the fan runs continuously, what would be an educated guess at trial and error adjustments.
Could the tstat itself be malfunctioning? I have not tried to replace it.
Tom
Currently the B&W set is wired as Black to the "R", and White to the "W".
The three way bundle is Black to the "G", Red to the "Rc" and White to the "Y".
The system is forced air. I do have a multimeter, if someone can tell me what to check for to identify the wires.
The system is forced air.
Yes, the thermostat is set correctly, ect. The wires were labeled when it was changed, but something got crossed. I thought I had saved the labels, but can find them or the previous tstat.
Given the fan runs continuously, what would be an educated guess at trial and error adjustments.
Could the tstat itself be malfunctioning? I have not tried to replace it.
Tom
#6
10-09-06, 04:24 PM
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I'd go back to the furnace and remove the panel. and hopefully the 2 and 3 bundle wire are the same there.
make note what goes to what.
If you got a standard furnace w/ A/C, you don't need two wires to Rc and R.
You should a wire on R (there should be a jumper between R and Rc)
A wire on G, Y, and G and maybe C Common.
make note what goes to what.
If you got a standard furnace w/ A/C, you don't need two wires to Rc and R.
You should a wire on R (there should be a jumper between R and Rc)
A wire on G, Y, and G and maybe C Common.
