We had this furnace installed 7 yrs ago and have spent so much money on service calls. This year the red light keeps blinking so the furnace won't kick on unless we physically flip the switch on the furnace itself to off then back on again to reset. The furnace does run but in very short cycles maybe two cycles if we are lucky but never warms up to the 67 degrees we have it set on. We were told it needed a ground wire. Didn't work. We were told it needed a new control board. The tech has tried installing 2 brand new boards in 3 days and neither will work at all. He puts the old one back on and it short cycles for maybe one or two times then shuts down. If we try again in a few minutes to restart the switch the fan comes on then the blower then nothing and then it shuts down. Its cold.