Originally Posted by handyman555
I bought a transformer with built in fuse so if there is short it won't blow my transformer .. There is no fuse on this unit... Will check all wires tho
Good choice! If there is no fuse than it's going to be a short on the low voltage side, such as beenthere previously said. Had it been on the high voltage lines the breaker(s) would have tripped in your home's electrical service panel, most likely.
Let us know if the fuse blows and on what call, fan on , heat or cool. Actually, best bet would be to try heat first and then fan on. If your transformer blew while on call for cool than it could be outside at the condenser.
Check cooling last.