for Hilliard, OH
Tech heard very loud noise coming from 2003 Trane AC condenser. Found condenser fan motor making grinding noise. Added WD40 to fan and got noise to stop and informed customer it is ONLY TEMPORARY. Need to order new Blower Motor. Unit operational at time of departure.
I found low voltage short not allowing the ac to turn on when the nest called for cooling, high voltage to Y was the code. I added an in-line 3amp fuse to prevent over amping. I replaced condenser to furnace tstat wire. This 1997 trane system now operational/ cooling at this time