DAB Failed Start Capacitor (Single‑Phase Models)

Pump hums but does not start, then may trip the breaker or overload

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Aged or failed start/run capacitor, Loose capacitor connections, Mechanical binding increasing start torque requirement

How to Fix / Troubleshooting

Safety first: Isolate power and discharge the capacitor before handling. Capacitors can retain a dangerous charge.

Steps to check:

Locate capacitor: On many DAB pumps, the capacitor is in a metal or plastic can on top or side of the motor.
Inspect physically: Look for bulging, cracks, or leakage. Replace if any damage is visible.
Test capacitance: Use a capacitance meter to verify the value against the rating on the capacitor label.
Check for binding: Ensure the motor shaft and impeller spin freely; if not, address mechanical issues as well.

Repair Difficulty

Medium 3/5

Required Part

DAB motor start/run capacitor

Check Price on Amazon

We may earn a commission from links on this page.