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- Pressure switch too far from tank. Maximum distance is 3-4 feet, greater distance will cause pressure fluctuations between the tank and the switch
- Undersized pipe from pump to tank
- Too many fittings or valves
- Tank water logged (bladder inside has hole)
- Pressure switch drift, Spring tension in switch failing
- Low voltage (Incoming)
- Pipe corrosion (diameter restriction)
- Burnt contacts in pressure switch
- High static level in well
- Loose wire connection
- Leaking check valve
- Differing style valves used in the system
- Flapper check valve used instead of Spring style
- Multiple Tanks with a pressure switch not centrally located to all tanks
- Verify Tank Pressure (without water) 2lbs less than cut-in pressure
- Jet Pumps only: check points on motor and tubing on switch
- Check direction of flow to ensure tank is filling before supplying water to house (no “t” before tank)
