I need to find out if anyone has a schematic for an old sun dial heat pump condenser unit. A couple of wires were taken off some relays . I have a blue wire coming from the contactor and I have no idea . I tried to place it on one of the fan relays but it just burns the relay. One relay is on top the other is on the bottom. The unit runs on cool but not on heat. Please help. I have no data plate either, I have no idea what size unit .