My nordynegibson a/c unit just quit working, one minute blower was on next nothing and condenser outside wouldn't switch on neither. Changed out capacitor and contactor switch on condenser , but still nothing. Getting power to the circuit card from inside unit but it appears that the thermostat is not switching condenser on. Checked power at thermostat... No power :-( but I have power going to the wires at the inside unit circuit board ( the same power is making it to outside unit. Changed thermostat but still nothing , also found my start capacitor on blower fan is pretty far gone ( top of unit pulling off when I was tugging at the wires )
I do not have a door cut off switch on inside but I do have a overflow cut off switch which I temp removed and spliced in a straight wire to bypass it in case this was an issue... Nope still no power to thermostat. I also checked transformer and I'm getting good power at both sides.
So here is my question , is it safe to say that I have bad wires from circuit board of inside unit to thermostat? Or could it still be the circuit board ?
What is the best way to rule out the circuit board ?
I currently have a new blower motor capacitor on order but would like to troubleshoot the power issue as much as possible so when the shops open Tuesday I can go get what I need and fix this finally.