Loud grinding or screeching noise from pump area when jets are on.

Safety first: Turn off power at the breaker. Do not run a noisy pump for extended periods; it can seize and trip breakers.

• Locate noise source: Remove the equipment bay panel and identify which pump is noisy.
• Check for leaks: Look for water dripping from the pump seal area onto the motor. If present, both seal and bearings are likely compromised.
• Replace pump or motor: Coast Spas pumps are typically replaced as a complete wet end and motor assembly. Swap with an identical model and horsepower rating.
• Secure mounting: Ensure the new pump is firmly mounted and aligned to minimize vibration.