Furnace keep burning 24VAC transformer
Customer’s furnace keep burning 24VAC transformer. I did check everything – replaced thermostat, check AC wires, replaced control board – didn’t help – still keep burning transformer (but I put there fuse already and it’s kept burning fuse). Then I did check limit switch because it was shorted to case. I opened limit switch and found small foil tape which shorted to case. LMAO! Ok. I removed it. And everything started working perfect. Fuuu…kk!!! 😀