My AC guys just left here - repaired the unit. They 'think' the 24v wire
may have been damaged somewhere. They swapped wires and everything is
working. He didn't think it was the contacter, but we'll keep an eye on
it.
#following.My NEST just spit out the E103 code. No wires are broken or
loose, nothing has been changed or moved. Everything was working fine
until it going out overnight last night. My AC unit is a brand new
Lennox purchased and installed one year ag...