E8
TYLZA
EEPROM / Memory Error on Main Control Board
Display shows E8 and the unit may shut down or fail to maintain temperature after a power event.
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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 in EEPROM, Power surge damaging memory, Failed main control board, Poor grounding of control board
How to Fix / Troubleshooting
Safety: Disconnect power before touching the control board.
- Power cycle: Unplug the cooler for at least 10 minutes to fully discharge the board, then plug it back in and check if E8 clears.
- Check outlet: Verify the outlet is properly grounded and not sharing a circuit with heavy appliances that cause surges.
- Inspect control board: Remove the rear cover, locate the main control board, and look for burn marks or damaged components.
- Reseat connectors: Disconnect and reconnect all harnesses to ensure good contact.
- If E8 persists: Replace the main control board with a TYLZA-specified replacement. Firmware is typically preloaded and not field-programmable.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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