Expert diagnostics and repair for well pump electrical systems.
Many well pump issues are actually electrical problems in disguise. Before assuming you need a new pump, the electrical system should be thoroughly tested. Common issues include:
The control box houses capacitors and a relay that start and run your pump motor. Failed capacitors are one of the most common (and affordable) pump repairs. Symptoms: pump hums but won't start, or won't run at all.
The pressure switch tells your pump when to turn on and off. Burned contacts, corroded connections, or misadjusted settings can cause no water, constant running, or erratic cycling.
Corroded wire splices, damaged well wire, loose connections at the panel, or undersized wire can cause intermittent failures, low voltage at the pump, or complete outages.
If your well pump breaker trips repeatedly, it could be a shorted motor, bad capacitor, ground fault in the well wire, or simply an undersized breaker. We diagnose the root cause.
Spokane's summer storms can send surges through your electrical system that damage pump controls, capacitors, and even the motor itself. We assess and repair storm damage.
We don't guess — we test. Our systematic approach finds the actual problem before any parts are replaced:
We verify proper voltage at your electrical panel and at the pressure switch. Low voltage from the utility or a bad breaker can mimic pump failure.
Start and run capacitors are tested with a capacitance meter. Failed capacitors are the #1 most common electrical repair — and one of the cheapest.
Using a megohmmeter, we test the pump motor's winding insulation resistance. This tells us if the motor is shorted, grounded, or open — without pulling the pump.
We measure the running amperage of your pump motor and compare it to the nameplate rating. High amps indicate a failing motor or mechanical binding. Low amps can mean a broken shaft or lost prime.
We test the well wire from the surface to the pump for shorts, grounds, and breaks. Bad wire splices are a common cause of intermittent pump failures.
Complete electrical testing of your pump system from panel to motor.
Capacitor replacement, pressure switch, control box components.
Most residential well pumps in the Spokane area operate on 240-volt circuits. Unlike the 120-volt outlets you use for lamps and appliances, your well pump requires a dedicated 240-volt circuit with its own breaker in your electrical panel. Here's what you should know:
The relay (in smaller control boxes) or contactor (in larger systems) is the electrical switch that actually connects power to the pump motor. Over time, relay contacts can weld shut, stick open, or develop high-resistance connections. We test relay operation with the pump running and inspect the contacts for pitting, discoloration, or mechanical wear. A failed relay can mimic a dead pump motor — replacing a $40 relay is a lot cheaper than pulling a pump unnecessarily.
Every pump motor has a Full Load Amperage (FLA) rating on its nameplate. By measuring actual amp draw under load and comparing it to the FLA, we can determine motor health without pulling the pump out of the well:
This test takes minutes and can save you thousands by confirming whether the problem is electrical (fixable on the surface) or mechanical (requiring a pump pullout).
Don't assume you need a new pump until the electrical system has been properly tested. Many "dead pump" calls turn out to be affordable electrical fixes. We have the diagnostic equipment and experience to find the real problem — and fix it right the first time.