E15
NetSpa Low Line Voltage / Power Supply Fault

NetSpa spa shows E15 and the display backlight may flicker; spa may shut off randomly.

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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.

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Possible Causes

Undersized extension cord, Shared circuit with high-load appliances, Loose plug or outlet contacts, Internal power supply failure on PCB

How to Fix / Troubleshooting

Safety first: Always unplug the spa before inspecting the power cord or outlet.

  • Use a dedicated outlet: Plug the NetSpa directly into a properly grounded outlet with the correct voltage and amperage. Avoid extension cords and power strips.
  • Check outlet condition: Inspect the outlet for signs of heat damage or looseness. Have an electrician replace a worn outlet.
  • Test another outlet: If possible, plug the spa into a different circuit to see if E15 disappears.

If E15 continues on a known-good circuit, the internal power supply section of the NetSpa control PCB may be failing and should be replaced by a technician.

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Repair Difficulty

Medium 3/5

Required Part

NetSpa power cord and internal power supply on PCB
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