Question about Heating & Cooling
The problem appears to be in the internal wiring or control board.
Symptom: If I temporarily connect the red low voltage control wire from the transformer to the green control wire for the fan, a relay clicks on the control board. But the blower does not come on.
I have tried re-seating all five of the blower wire connections to the circuit board but this didn't help.
Does anyone have any suggestions? I'm just a homeowner, not an HVAC specialist. I'm positive the problem is not in the stat or any of the five wires from the stat to the Rheem. Thanks in advance for any thoughts.
Does the blower do anything? turn the power off and take the lead that comes off of the "cool" ( wire from the blower motor) and hook it up to the outlet side of the door switch ( the wire that comes off the door switch and goes to the board) turn the power back on and push the door switch in this will allow 110v to the blower if the blower runs the blower is good
reatach all door switch wire and blower wire to "cool"
disconnect all low voltage terminal wires at control board from thermostat make a jumper with a seperate wire from R to G if it runs it is your Thermostat or the wires inbetween the two
if it doesnt you probably have a burnt solder spot on the back of the control board and will need to replace the board
hope this helps
Posted on Jul 12, 2009
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Posted on Jan 02, 2017
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