Coast Spas
Reduced Jet Flow
Jets are weak or some seats have very little water pressure.
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Possible Causes
Dirty or partially clogged Coast Spas filter cartridge, Air lock in jet pump, Diverter valves not positioned correctly, Mineral buildup or debris in jet bodies
How to Fix / Troubleshooting
Safety first: Turn off power before removing filters or opening unions.
- Clean filter: Remove and thoroughly clean or replace the filter cartridge.
- Check diverter valves: Adjust the Coast Spas diverter valves to direct more flow to the affected seats.
- Open jets: Many jets are adjustable; turn the jet faces counterclockwise to fully open.
- Bleed air: If the spa was recently drained, bleed air from the pump unions as described in priming procedures.
- Flush plumbing: Use a spa line flush product before the next drain/refill to remove internal buildup.
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Repair Difficulty
Easy
2/5
Required Part
Filter Cartridge
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