Originally Posted by TASMG
1. Could the new blower motor (or work related to it) have had any impact on the sudden issue with the contactors and burnt out transformer?
2. The transformer is no problem, but how difficult is it to change the contactors? I have never changed it before.
I have a Carrier Model 38TH030310DL.
Yes any work on the unit could have shorted out the transformer.
A contactor is very straight forward to change, just go wire for wire if you can't follow the wiring schematic.