E16
Lay-Z-Spa
Internal Sensor Calibration / Self-Test Failure
Lay-Z-Spa displays E16 and may intermittently shut down heating or filtration.
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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
Control PCB failing internal self-check, Sensor readings out of calibration range, Firmware corruption, Intermittent PCB connection
How to Fix / Troubleshooting
Safety first: Disconnect power before any inspection.
- 1. Full power reset: Unplug the spa for at least 30 minutes, then reconnect and reset the RCD. Sometimes internal self-test errors clear after a full discharge.
- 2. Stable power source: Ensure the spa is on a dedicated outlet with stable voltage. Avoid long extension cords.
- 3. Environmental check: Protect the control unit from direct sun, heavy rain, and extreme temperatures, which can affect sensor readings.
- If E16 continues: The control PCB or internal sensors are likely defective. Replacement of the pump/heater unit is usually required; contact Lay‑Z‑Spa support.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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