Spa frequently turns on and off by itself, cycling pumps and heater more than expected.

Safety: No internal work is required for basic checks.

• Step 1 – Review filtration settings: Check the programmed filter cycles and adjust to reasonable durations.
• Step 2 – Check cover and insulation: Ensure the cover seals well and cabinet panels are in place to reduce rapid temperature swings.
• Step 3 – Observe sensor location: Verify that sensors are properly mounted on the heater tube and not exposed to drafts.

If cycling remains excessive and noisy, the control pack may have a relay or logic fault requiring professional diagnosis.