E05
NetSpa
Water Level / Dry-Run Protection Fault
NetSpa hot tub shows E05 and will not start the massage or filtration cycle.
Advertisements
Safety Warning
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.
Advertisements
Possible Causes
Water level below minimum sensor, Faulty water level / flow switch, Air trapped in suction line, Loose hose connection allowing air intake
How to Fix / Troubleshooting
Safety first: Unplug the spa before adjusting water level or hoses.
- Top up water: Fill the spa until the water level is between the MIN and MAX marks or at least 2–3 cm above the highest suction fitting.
- Bleed air: With power off, gently squeeze the hoses to help release trapped air. Slightly loosen the filter housing cap to let air escape, then retighten.
- Check hose connections: Ensure all NetSpa hoses are firmly attached and O-rings are in place so the pump does not suck air.
- Restart: Plug the spa back in and start filtration. Observe whether E05 clears.
If E05 persists with correct water level and good flow, the internal water level/flow switch inside the NetSpa motor unit may be faulty and require replacement.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
NetSpa water level / flow switch
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements