Upon arrival I checked the amps to heat strips. I was getting power to heat heat strips. The blower is working. I checked the thermostat. The thermostat was switching back and forth between auxiliary heat & emergency heat. I replaced the batteries in tstat. Same thing was happening. I pulled stat and jumped R & W. Furnace came on but no heat. I found t-stat bad also circuit board on air handler has low voltage going in but it isn't sending low voltage out, I spoke to customer about system replacement and he is all set for tomorrow install.
