SE
Wellis
Software Error / Internal Control Pack Fault
Display shows SE or SEr and spa may not respond correctly to commands
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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
Corrupted firmware, Power surge or brownout, Incompatible replacement control board, Internal memory failure
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before opening the control pack.
- 1. Hard reset:
- Turn breaker OFF for at least 5 minutes.
- Turn ON and observe if SE returns.
- 2. Check supply stability:
- Ensure the spa is on a dedicated circuit with proper voltage.
- 3. Inspect control pack:
- Look for signs of water intrusion, burned components, or insect damage.
- 4. Firmware / board replacement:
- If SE persists, the control pack may require firmware reflash or replacement.
- Contact a Wellis dealer or technician; this is not typically a DIY repair.
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Repair Difficulty
Professional Required
5/5
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