Zodiac pool heater repeatedly locks out and must be manually reset to restart.

Safety: Frequent lockouts indicate an unresolved fault. Do not repeatedly reset without diagnosing the cause.

• Record conditions: Note when lockouts occur (windy, cold, after long off periods) to help identify patterns.
• Inspect and clean ignition components: Clean the igniter and flame sensor, check wiring, and ensure proper burner flame as described in other entries.
• Check gas and power stability: Have a professional verify gas pressure and electrical supply stability.
• Replace ignition control board: If all mechanical and supply issues are resolved and lockouts persist, the ignition control module may be faulty and require replacement.