I'm looking for wiring diagram/schematic for this old beast. m/n: GCS3-957-250A-10J. I have spent way too long on it trying to revive it back to life. My boss found a diagram on the internet, but it's for the wrong GCS3 model. We kinda got it going, but now it has conk out some more and I need the exact diagram. since the other one that we tried to get it going is not the exact one there's a lot of component that's not on it. there's a wire we found disconnected, but not sure where it goes. it's live 120V just laying around in the cabinet. comes out of one of the fuse boxes on the right hand side of the electrical compartment.
I have replaced K3 relay, K12 sequencer and it has new control transformer. Spent 7 hours yesterday just tracing wire and trying to get it going. I don't have 230V to the control transformer. but as soon as that wire jumped to the other line voltage feeding the xfformer I have 24V and the unit will run. the xformer connection is just a maretted juction directly from the step down in the blower compartment. that wire I was talking about has female spade connector on it, so it's design to go to a terminal somewhere.
all the colour of the wiring has turned white, so that doesn't help either. thanks a bunch if you could find one for me. old timers here might have some diagram.