E12
Lay-Z-Spa
Internal Voltage / Power Supply Error
Lay-Z-Spa displays E12 and may shut down heating or all functions intermittently.
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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
Faulty low-voltage power supply on control PCB, Overvoltage or undervoltage from mains, Loose internal power connectors, Short circuit on PCB
How to Fix / Troubleshooting
Safety first: Unplug the spa immediately if you suspect electrical issues. Do not continue to reset a unit that repeatedly trips.
- 1. Check mains supply: Ensure the spa is plugged directly into a properly grounded outlet with the correct voltage for your region. Avoid extension leads and multi-way adapters.
- 2. Inspect RCD plug: Check the integrated RCD for signs of damage or overheating. Test the RCD using its test/reset buttons according to the manual.
- 3. Try a different outlet: If possible, test the spa on another dedicated circuit to rule out house wiring issues.
- If E12 persists: The internal power supply or control PCB is likely defective. This is not user-serviceable; contact Lay‑Z‑Spa support for pump/heater unit replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Internal Power Supply / Control PCB
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