Hi all, Brought my house a year ago and the furnace worked with no problems last winter. Tried to turn it on for the first time yesterday and the burners start up on the furnace then shuts off after 5 - 10 mins. Today it did the same thing and I notice that when the gauge (sits on top of the furnace) hits near 30 psi the burners would turn off. I have no heat now and the HVAC guy is coming tomorrow. Any advice or idea on what is wrong would be helpful so i know what to expect tomorrow. thanks