A plugged vent screen Larry Y. • Lajose, PA • October 06, 2014 My Repair & Advice I changed the 2 coils first thinking that was the problem and it was not. The problem was still there so in checking the vent outside I found that there was a screen inside under the flap. I removed it and it works just fine. Probably the worst part about changing the coils was trying to figure out how to access the area,ha,ha. Your service was great had the part the next day, about 24 hours after ordering. Thanks a lot you are in my favorites if I jhneed any more parts. Thanks again Was this review helpful to you?