Originally Posted by hutch07
I already cleaned out the port. Once I suck on the hose and get the valve to open i can pull the tube off and on and the gas valve opens and closes. But if I turn off the heat then it wont come back on. And still dont run the proper sequence. Any Ideas?
Might have a thinning inducer blower wheel.
If you suck on the hose. And then put it on, and everything works.
Shut the furnace off for 10 minutes, and then turn it back on. If it works again without sucking on the hose. You may be getting moisture in either the hose, or pressure switch.