Original message
| nonespicy
|  "furnace and AC will not power up"
, posted Tue 25 Jul 19:58  
My furnace and AC still won't turn on after replacing the thermostat. The circuit breaker is on and the switch for the furnace is okay. I been told that it maybe the trasformer is bad.
It is extremely hot rigth now in our area.
Need help how to find the problem
Thanks so much.
Don't be a party pooper
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Replies:
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| Dog Biscuit
| "Re(1):furnace and AC will not power up" , posted Thu 27 Jul 02:05
Here is my recent similar experience:
*Transformer 24v, OK
*Thermostat, OK
*Pulled-out furnace blower and removed direct-drive motor.
*Checked 7 1/2 MF Capacitor, OK.
Prognoses: 19year-old blower motor finally burned out; its been running continuosly for three wweks 24/7, during this hot spell.
(In retrospect, I now realize my first clue was condensate over-
flowing the cooling-coil as a coil freeze-up occurred due to no
blower action while the CU pulled down to lo-pres cut/out.)
To err is human to repair divine
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| jimhermansen
| "jimhermansen" , posted Tue 25 Jul 20:49
with all units turned on, disconnect the t/s wires
1 jumper R & Y -the unit should start on cooling.
if this works rewire your T/S
2 if this fails try and see if you have 24V at R & Y
if you dont ,make sure that your T/S is on cooling or auto
goot luck
jimher
jimher
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