The outside AC unit stopped running but is omitting a buzzing noise. If I turn it with a stick it will begin to spin, but not up to speed. A few days after the outside unit began to buzz I tried to shutoff the house fan, which I had in the ON position. Once I switched it into Auto it would not...

I have a newer HVAC unit that was installed 2 years ago. The outside unit has always made a buzzing sound when kicking on. Lately, however, it seems to have gotten worse. It not only buzzes when kicking on, it also has a periodic, shorter, buzz that occurs while running. It makes a typical...

When I turn my home heating unit on, Fan on Auto, I hear the gas come on and ignite, but the fan doesn't come on. I hear a buzzing noise coming from the Ignition Control unit. If I turn the fan on, the house heats nicely, but the (Robert Shaw 180 715U) Ignition control unit keeps buzzing. Any tests...

We just moved into our new home. Noticed the A/C went on all day, non-stop even though it was set on auto at 77 degrees. Figured the thermostat was broken, so decided to replace old one with Honeywell 5-2. Mapped it just like the 4-wiring old one, Y-G-W-R. Red wire on old thermostat was wired to...

My Trane unit, VR724E100A0 has been giving be trouble. The fan wouldn't hardly run and I was hearing a faint buzzing noise. It would act like it was trying to run, then slow down, speed up, repeat & finally stop. Turning by hand didn't help. I installed a new run capicator for fan and the fan...