Sunrise Spas Circulation Pump Bearing or Impeller Issue

High-pitched whine or humming from circulation pump, little or no flow

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Worn circulation pump bearings, Impeller partially blocked, Air lock, Voltage supply issue to circ pump

Safety first: Turn off power before servicing the pump.

Bleed air: Loosen the circulation pump union to release air and retighten.
Check for obstructions: Remove suction covers and check for debris that may restrict flow.
Listen after restart: Restore power and listen. If the pump continues to whine and flow is weak, the pump is likely failing.
Replace pump: Install a new Sunrise Spas-compatible circulation pump.

Medium 3/5

Circulation Pump

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