Display shows PRR or PR and pumps run in a sequence; limited control response

Safety first: Ensure all jets are submerged and slice valves are open before running pumps.

Steps during priming mode:

• Allow priming to complete: After power-up, Strong Spas often enter a priming cycle where pumps run sequentially. This is normal and not a fault.
• Bleed air if needed: If pumps are noisy or not moving water, loosen pump unions slightly to release trapped air, then retighten.
• Exit priming: Follow the user manual instructions (often pressing a specific button) to exit priming once water flow is established.

When to call a technician: If the spa remains stuck in priming mode and will not transition to normal operation, the control pack or keypad may need service.