Pressure Switch Problems: Clicks, Burnt Contacts & No-Start Fixes
When your well pump suddenly stops running, the problem often isn’t the pump itself — it’s the pressure switch. This small but vital electrical component tells your pump when to start and stop. Over time, contacts wear out, springs weaken, and debris builds up, leading to low pressure or total pump failure. Here’s how to recognize pressure switch issues and when to call in the pros.
What Does a Pressure Switch Do?
The pressure switch is a small control box (usually near the pressure tank) that automatically turns your well pump on when water pressure drops below a set point (cut-in) and off when it reaches the upper limit (cut-out). For example, a 40/60 switch starts the pump at 40 PSI and shuts it off at 60 PSI.
Common Symptoms of Pressure Switch Trouble
- Clicking but no water flow: The contacts are engaging but failing to send power to the pump motor.
- Constant clicking: Rapid cycling indicates pressure loss or a failing tank bladder.
- Burnt contacts: Over time, pitting or corrosion prevents proper electrical contact.
- Delayed or no start: A clogged pressure sensor tube or failed spring may be preventing activation.
- Stuck switch: Dirt, ants, or corrosion can jam the mechanism entirely.
How to Safely Troubleshoot
If you’re comfortable working around electrical components, you can perform basic checks before calling for service:
- Turn off power at the breaker to avoid shock.
- Inspect contacts: Remove the switch cover and check for pitting, black residue, or melted metal.
- Check pressure readings: Use a gauge on the tank to confirm if the system is below the cut-in pressure.
- Clean debris: Remove any insects or dirt from inside the switch housing.
- Test manually: Use an insulated tool to press the contact arm — if the pump starts, the switch likely needs replacement.
⚠️ Never bypass the switch permanently. This is a temporary test only and should be done with extreme caution. If unsure, always contact a professional.
Why Pressure Switches Fail in Texas Wells
Texas wells face unique challenges — mineral-rich water and high humidity accelerate corrosion. In rural areas, insects like fire ants and mud daubers often invade electrical housings, causing shorts or contact blockage. Routine cleaning and inspection are key to preventing costly failures.
When to Replace vs. Repair
A typical pressure switch costs less than $50 in parts, but improper replacement can damage your pump control circuit. If contacts are burned, the spring is loose, or the switch has moisture inside, replacement is best. Always verify compatibility (most residential wells use 30/50 or 40/60 switches).
Frequently Asked Questions
Why does my switch click repeatedly but the pump won’t start?
The switch is sending power but the motor circuit may be open — likely a burnt contact or a tripped overload. A professional inspection can pinpoint the fault safely.
How often should a pressure switch be replaced?
Typically every 5–7 years, or sooner in areas with high mineral content or frequent cycling.
Can I upgrade to a digital or constant pressure system instead?
Yes! Many homeowners upgrade to constant pressure systems that use sensors instead of mechanical switches for greater reliability and smoother operation.
What happens if my switch fails completely?
Your pump won’t run, leaving your home without water. Turn off the breaker and call 77 Water Well for emergency service to prevent damage to the pump motor.
Call the Experts
Experiencing clicking sounds or pressure loss from your well? Call (281) 378-7020 or contact our team today. Our licensed technicians diagnose and replace pressure switches quickly, ensuring your well system runs smoothly and safely.