Question about Heating & Cooling
I think you need to slow down and start fresh.
1) You have 115v at Transformer-You are reading from Red to White
2) If that checked out OK are you reading 24v out of Transformer?
3) If yes, remove thermostat wires and put a jumper wire between
R and G. Put the Blower Door Back ON and turn on power
hopefully your fan will come on.
4) If the fan comes on, move the jumper between R and Y, put the
blower door back on and turn on power, indoor fan should come
on as well as the outdoor unit. If the happens you have a problem
with the low voltage wire being broke or a defective thermostat.
5) If none of the above happens and you do not have 24v Between
R and Y or R and G, but you have 24v on the secondary side
of the transformer, you have a defective control board.
Posted on Jul 21, 2010
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Posted on Jan 02, 2017
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