HVAC Questions? Ask an HVAC Expert for Answers ASAP
I am Rob and I will try to work though this with you.
Try replacing the battery?
Its direct power. I did just buy anew thermostat but havent installed it yet
turn the power off to the furnace
ok have to go into the other room
remove the old thermostat from the wall
im back. The old thermostat is off the wall already
make a note of thermostat wiring and mark the wires with the terminal letters
ok should I just come back when done? it may be a few minutes
if you twist the wire from R together with the one from W or put them both under thr screw for R and leave the others aloan for now.
This should call for heat and start the furnace when you turn the power back on.
sorry for the delay
so twist r and w together?
ok here goes
Sounds like a bad control transformer
do you have a volt meter?
no but I can run to the hardware store and get one. is it something I can do or should I can someone??
i mean call
Well its not to bad
ok i'm taking off to get a volt meter and get my kids at school be back probably an hour
can you find the control trans
before you go
i don't know what that is /looks like
in the furnace or outside on the electrical box with the service switch
it a metal cube looking thing
it will have to screws on it for the low voltage wires
ok thanks. I am sorry i didn't realize how late it is. I will have to come back in a bit. Thanks for your help so far, sorry about this.
and two wires going in for 120 v
i will check back later
do you have a time in mind?
hi i'm back i tool the cover off i *think* I found it, it has a wire for 40v and also one for 280 but no 120,
looks like the wire from the thermostat connects to it
sorry thw onw from the thermo commects to the circuit board
hi are you there?
I am back, some else jumping for a min?
this is it
40 va is the size of the transformer. the wires from it to t-stat should have 24 volts ac on them.
I have to run, b back in 10 mins
ok i'll look for those
ok from the circuit board there's a red and black wire running to the trans, both going into slots marked 24v, and a green ground wire running out of the 24v slot that the black wire leads into.. I can see the wires from the t-stat (red, green, white, yellow) running to the board, then the board is connected to the trans by those 2 red and black wires.
Do you have a volt meter yet?
can you check for 24 volt on the red and black wire terminals at the transformer?
be right back
With the power on to the furnace
is this a gas furnce or electric?
you have not get 24 volts?
is there a box on the out side of the furnace with a switch on it?
sounds like a bad transformer!
there isn't a box with a switch, but there are two large on-off switches on the front of the panel, i flipped those off/on when i did the same at the basement switch board.
they are right on the front panel of the furnace
do you want to change the transformer or is it time to call in a tech?
I think I better call someone, I'm probably getting in over my head.
A good harware store will have the trans.
ok i'll probably get the trans and then call someone to install it, better safe than sorry when it comes to electricity
when you said 208 not 120 volts I new is was electric and not gas!
thanks for the help- it'll probably go quicker now that i now what the trouble is
call around, it may be cheaper of the service truck than at the hareware store.
ok thanks! :-)
you can get quotes from contractors now that we know what you are looked for!