[don.e]

Well pressure switch set at 30 to 50 lbs. off at 50. Pressure continues to rise to 90 to 100lbs. ( no power to switch have shut off breaker.)well pump 1/2 h.p

[hkstroud]

( no power to switch have shut off breaker.)

What does that mean? You have to have power to the switch for the pump to run.

Possible causes of problem
1. Debris blocking port of the switch or the piping to the switch
2. Defective switch
3. Points of switch welded together

Suggested solutions

Turn off breakers, drain tank. Remove switch, inspect switch input port and piping. Clean and remove any scaling, rust or debris, or replace switch. They are not expensive.
If switch is mounted on well piping, cover opening, turn on breakers briefly and flush piping. Reinstall switch and turn on breakers.

If switch functions from a small tube from tank remove tubing and make sure it is clear by running a small wire through it.

If you decide to replace switch make sure that it matches the pressure settings of the tank or re-pressurize the tank to match the switch settings.

[don.e]

Problem ; well pressure switch set 30-50lbs pressure switch shuts off at 50 lbs.and pressure continues to rise to 95 to 100 lbs I can switch breaker off to pump after pressure switch shuts off it still climbs to 95 to 100lbs new pump was just put .they said it was gauges put new ones on old gauges read the same the well pump is 1/2 h.p submersible some said pressure switch located to far from pump app. 40 feet.old pump stater acting up but never had this problem? Old pump was 35 years old that why I put new one in .thanks

[ballengerb1]

You already have this question posted. If you want to add something go to your original post and type in the box at the bottom of the screen

[hkstroud]

How far is pressure switch from tank?