pressure switch problem

I have a model M1B077A-Aw Miller furnace that is tellin me through an indicator light that the pressure switch is open.I'm guessing that this will cause the unit to not turn on.How do I solve this issue,just short of replacing the pressure switch completely?

My well occasionally runs dry, so I recently replaced my pressure switch with a Square D switch with the low pressure cut-off to protect the pump. It is set for a 40-60 psi range (same as the old one). Now about half the time, when when it reaches the 40 psi cut-in, the pressure suddenly drops...

I have a york furnace P2MD12H06401A after 1 hour it shuts down and gives a 2 flash error for a stuck pressure switch. The switch is new can it be wired wrong? The old one had 2 white wires piggy back and 1 blue wire. The new switch has 3 separate terminals

I lose water pressure completely for about 10 sec. While running the water. This happens approx. Every 5 min while the water is running. I've replaced the pressure switch several times, but it only helps for maybe six months before the water pressure is affected. Is this a well pump problem or a...

I have a Goodman 93% efficient furnace that short cycles the gas burners. It cycles the vent on, starts the igniter, fires the burners and kicks on the blower but the burners only stay on for a short time ( less than 30 seconds). The led on the circuit board gives me 3 flashes indicating " pressure...