Davey variable speed pool pump shows E7 and will not start.

Safety first: Disconnect power at the breaker and lock it out if possible. Do not operate the pump if there is evidence of water inside the motor or controller.

Step-by-step checks (visual):

• 1. Inspect motor housing: Look for cracks, rust streaks, or signs of water entry around the cable gland and terminal box.
• 2. Check cable gland: Ensure the supply cable gland on the Davey motor is tight and intact to prevent water ingress.
• 3. Smell test: A burnt smell from the motor often indicates winding damage.

Technician-level checks:

• 4. Insulation and winding tests: A technician can perform resistance and insulation tests on the motor windings to confirm an open or shorted phase.
• 5. Drive output test: The variable speed drive section should be tested according to Davey service procedures.

E7 generally indicates an internal fault; replacement of the motor/drive assembly is often required.