E8
MSPA
Internal Control System Communication Error
Display shows E8; spa may not power up fully or certain functions are disabled.
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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
Loose internal harness between keypad and main PCB, Moisture on control PCB, Damaged keypad membrane on MSPA control panel, Faulty main control PCB
How to Fix / Troubleshooting
Safety first: Unplug the spa before opening any control housings.
- Power cycle: Disconnect power for at least 10 minutes, then reconnect. Sometimes E8 is triggered by transient electrical noise.
- Inspect control panel cable: On MSPA models with a separate wired controller, check the cable from the keypad to the motor/control unit. Ensure it is fully plugged in and not pinched or cut.
- Open control box: Remove the cover of the motor/control unit. Inspect the main PCB for signs of moisture, corrosion, or burnt components. If moisture is present, dry gently with a soft cloth and allow to air dry thoroughly.
- Check connectors: Reseat all multi‑pin connectors between the PCB, display, and keypad. Look for bent pins or green corrosion.
- Replace faulty module: If E8 persists, replace the MSPA control panel/keypad if it shows signs of water ingress or unresponsive buttons. If the keypad is fine, the main control PCB likely needs replacement.
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Repair Difficulty
Hard
4/5
Required Part
MSPA Main Control PCB
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