Furnace guy was here Wednesday, pressure switch need cleaned (he did it) all was well for a day. Having same problem again. Indicator light confirming this. How do I un stick the pressure valve/switch? Trane XE 90 model. Do not want to afford a service call when sure of the problem.
Any help appreciated
Flinker

If the guy fixed it for you and charged you for it then he should stand by his work for at least 30 days. Call him back.

Thanks for the advice. I called and it is fixed.
Flinker