Quick Answer: Common electrical issues: tripped breakers (check capacitor, motor), no power to pump (check breaker, pressure switch), control box failure (3-wire systems), and wiring faults. A tripped breaker on a well pump circuit indicates the system has drawn an electrical current exceeding the safe limit of the circuit protection device. Repeatedly resetting the. Identifying the signs of a faulty well pump control box can save you time, money, and hassle. Have you ever noticed. The five most common causes and how to diagnose the real problem before you pull the pump 1. Cause #1: Pressure Switch Sticking or Burnt Contacts 2. Cause #3: Voltage Drop on the Pump Wire 4.