NetSpa bubbles (air blower) are very weak or uneven around the ring, with no error code.

Safety first: Unplug the spa before cleaning the bubble ring.

• Clean bubble ring: Gently scrub the air outlet ring at the bottom of the spa with a soft brush to remove scale and debris from the holes.
• Drain and dry: If water has entered the air channel, drain the spa completely and allow the bubble ring and hoses to dry for 24 hours.
• Reposition motor unit: Ensure the motor unit is at the correct height relative to the spa to prevent water backflow into the blower.

If bubble strength remains poor, the NetSpa air blower motor may be weakening and could require replacement.