Our home utilizes 2 A/C central air units. Downstairs is operationg OK. (Handler and compressor) Upstairs unit (handler) is blowing, no condensation on "shut off valve". No "icing" on coils. COMPRESSOR fan blades did require a "jump start" (I used a stick to start blades turning). However,...

Hi All, I have a 480 VAC 3 phase ungrounded system. We monitor the system via a set of lights for each phase. If one phase goes to ground then that light should glow bright. In my case I have the B phase light out completely. While trouble shooting the problem I found which disconnect switch was...

could anyone tell me why I my blower fan on my carrier (model#485x-036100331) will not run. It seems that every thing else works fine because the compressor & condenser runs and the coil will frost up. The only thing I found to check was a 5amp fuse. Any suggestions would be greatly...

My brake light (in dash) won't turn off. My fluid level is good. Any ideas?

I am employeed by a company that offers a service to clear blockages in commercial floor drains; especially restaurants and grocery stores where grease is prevalent. We do use power snakes at times, but more often we use high pressure water. Our technicians struggle a lot at troubleshooting the...