I came home from vacation in AZ today to find my place ice cold. Outside temp is 15 below and the day I left it was a blizzard snow storm
It could not have been out the entire time because it was not that cold 55 inside
I was getting 3 blinking lights on the control board and I could hear the water in the fan housing. I removed the cap and pulled the hose off the pressure switch and put it back on. Everything reset and it is running now but I can still hear a little water
Could in the intake be full of snow?
What else ?
I am a retired Appliance tech (35 years) but do not have ant HVAC training. Just enough to get in trouble