I noticed that my
HVAC system stopped
heating or
cooling, but the controller does not indicated any fault code. On further investigation I could hear a buzz followed by a popping
noise from the top of the
compressor when it tried to cut in. I believe this is the thermal overload operating. I have checked the thermal overload and it seems to be working correctly (i.e., conducts when cool). When the
compressor tries to kick in it draws a very high
current - hence the thermal overload shuts it off. I suspect the compressor may be the problem. Does anyone have any suggestions on how to confirm this? If it is the compressor, can that be changed without changing the complete
HVAC unit?
Thanks
Neil