Pump display shows E08 and the unit shuts down intermittently, especially during storms or when other large loads switch on.

Safety first: De-energize the circuit at the main breaker before tightening any electrical connections.

Steps to check:

• Measure voltage under load: With a qualified person and proper meter, measure voltage at the Jacuzzi pump terminals while the pump attempts to run. It should stay within ±10% of nameplate.
• Inspect wiring size: Confirm the wire gauge from panel to pump matches Jacuzzi installation requirements for the run length and amperage.
• Tighten panel lugs: In the pool subpanel, tighten the breaker lugs and neutral/ground connections feeding the pump.
• Check for shared circuits: Avoid sharing the pump circuit with large loads (heaters, air conditioners) that cause voltage dips.

Persistent E08 with proper wiring may indicate an internal power supply issue in the drive module, requiring replacement.