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When you turn to cool does outside unit come on without fan. Rfuss
Do you have terminal board on furnace with W Y R G C. Is the Y to thermostat connected to Y at terminal board. What is model number of thermostat. Russ
Looking at the diagram and the actual wiring, R goes to the transformer and W goes straight to sequencer. I jumped a wire between the wires but nothing happened.
Okay. It may take me a little bit. I've got to get my meter to check it out. I'll try to give you a reply back this evening.