I have an 18 month old Trane XB10 air conditioner. It has been
professionally cleaned and serviced twice since installation, most
recently about 14 days ago. It has been used for a total of perhaps 10
This weekend I turned the air conditioning on for the first time since
it was serviced and it did not work. On checking, I found the circuit
breaker had tripped and could not be reset. I opened the back of the
outside unit and was surprised to find an orange cable hanging loose,
which was clearly supposed to connect to the capacitor. I have a
second identical unit which I opened and confirmed that the orange wire
should be connected to the capacitor, so I reconnected it in the
failing unit. Unfortunately this did not resolve the problem. I was
able to reset the breaker, the fan on the external unit slowly started
up, but after about 1-2 minutes the breaker tripped again.
At this point I called out the same company who had performed the
service. After some testing they concluded that the condensor had a
ground fault and needed to be replaced. While the unit is under
warranty, the labor and material to do this will run about $550.
I am having a hard time believing that the loose cable and the failure
of the condensor are unrelated events. Perhaps I am just unlucky. It
seems more likely to me that either a) the service engineer left the
unit disconnected without saying anything because he couldnt get it to
work; or b) the loose wire actually touched something that then caused
the failure in the condensor.
I would really appreciate any expert views on whether a) or b) are
likely or whether I am just unlucky.
Thanks in advance