Clifford W Bayville , NJ December 15, 2019 Appliance: Model TELEDYNE 84125 Zone #2 valve would not open this furnace is too old for self diagnostics so a good dvom and patience led to a wire in the zone valve de soldered itself Ordered a new zone valve, installed it and retested. found a faulty thermostat in zone 2 also. Hopefully, this was the cause of the wire getting so hot. All is well now. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours