Hi all, every winter I have to open the front pannel on my roof top Carrier A/C unit and reset the gas valve to make the heater work. Well this summer I had an A/C tune-up done and today I went to reset the gas valve and noticed a loose red wire.
There are three wires coming off the pilot lighting system: two plug into some kind of a control unit. The red wire is not plugged in, its just sitting next to an open plug numbered 5. The red wire runs to a probe about an inch long that burns bright red when the flames start to blow. The heater works fine that we have noticed, should I plug this wire in?