Hi, my name is mo from Arizona, my Goodman Model PGB furnace would not light. Pulled out the spark ignitor, flame sensor, ckecked voltage at gas valve, pulled out fuse, all of these parts looked and checked out OK. Turned the power on and the furnace worked fine. Remembering the LED was blinking 2 flashes, checked the trouble chart that said end switch open and repair Venter end switch. What should I do now, go buy a new Venter switch or forget about it till it quits the next time. It will be summer soon although the house cools off to about 60 F at night with no furnace. Any help would be appreciated and thanks for reading this. Mo

Hi, my name is mo from Arizona, my Goodman Model PGB furnace would not light. Pulled out the spark ignitor, flame sensor, ckecked voltage at gas valve, pulled out fuse, all of these parts looked and checked out OK. Turned the power on and the furnace worked fine. Remembering the LED was blinking 2 flashes, checked the trouble chart that said end switch open and repair Venter end switch. What should I do now, go buy a new Venter switch or forget about it till it quits the next time. It will be summer soon although the house cools off to about 60 F at night with no furnace. Any help would be appreciated and thanks for reading this. Mo

See here

hvac1000, thanks for the link, you are right, check the venter end switch which I can not find. Furnace still working good. Mo

It is the switch on the end of the vent motor. That is the little blower motor in front of the unit. Page 12 look at ES and VM for your answer.


http://site.famousparts.com/goodman/IO-148.pdf

The next thing to check is why did the vent limit switch trip. High winds in the area, restricted vent?