04DEC2022 Jason B Arrived for new customer no heat. Spoke with homeowner about the issue. Everything was working until we switched it over to AC, then it wouldn’t work again. Inspected furnace and AC. Found transformer blown and not sending power to the board. Inspected AC. Found thermostat wire chewed up and shorted the contactor. Replaced transformer and contactor. Cleaned up electrical. Cycled system in all stages. Checked amps and all electrical connections. system is working properly at this time.