I have a 1991 model gmn100-4 furnace and air con power supply 115 volts 1ph60hz less than 12 amps my problem is when fan moter kicks in the air unit does not i checked and theres power from breaker box to...
Hi Jimmy, yes, I bet it is hot with that high humidity. From what you are saying, it sounds to me like this pusher switch is the contactor at the out door unit. It has the power lines going into it, and out the other side. It will have contacts on it that you can push down, is this what you are talking about when you say pusher switch? The indoor unit is 115 volts, you are right about that, but the outdoor unit contactor/pusher switch is 230 volts. You should have a box mounted by the outdoor unit for high voltage. Most all of the disconnect boxes have 2- 30 to 35 amp fuses inside them. You may not see them, so pull the plug and the plastic cover in the box to see if you have them. If you do, you may have blown a fuse. Replace both of them. This box is powered by a breaker at your main panel also. You will have a double pole breaker and make sure its not tripped. This contactor has a 24 volt coil on the bottom of it and is energized by the thermostat which closes the contacts to send power through to start the unit. You have to have 230 volts there. Turn the stat on cooling and go out to see if the pusher/contactor switch is energized. If so and the unit is not on, you have no high voltage there to run it, so check for fuses and the main breaker. You have power to the indoor unit, but not the out door unit. Start here and do these checks. Keep me posted on this Jimmy, and get back to me if this does not start the unit or if you trip a breaker. I will be watching for you. We will get it going. If this does the trick, be sure and rate me kindly as I know you will. Keep me updated by my user name below.
A/C, Heating, & Refrigeration Contractor.
Aug 02, 2010 |