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Hey Josh,
Fixed problem. Exhaust vent had been crushed by another trade and hidden behind blown insulation.
Talk soon. Tony

Thanks Josh,
Yes, I checked and replaced both. Also I blew through the tubes. The furnace was 1 of 4 systems in this development and start up was for the first time yesterday.

Today I am going...

Goodman 95% 2 stage furnace. LED code says pressure switch is stuck open.
1) Changed switch.
2) Jumped Limit switch.
3) Changed PCB.
Same error code. 3 blinks "code says pressure switch is stuck...