Marey
Display / User Interface Failure
Marey heater’s digital display is blank or unreadable, but unit still heats water.
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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
Failed display board, Loose ribbon cable, Moisture damage to control panel, Low control voltage to display
How to Fix / Troubleshooting
Safety first: Turn OFF power before removing the front cover.
Steps:
- Check connections: Reseat the ribbon cable or harness between the display and main board.
- Inspect for moisture: Look for condensation or water marks on the display board. Fix any leaks above the unit.
- Replace display board: If connections are good and the display remains blank, replace the user interface/display board with a Marey-compatible part.
When to call a technician: If you are not comfortable replacing electronic boards or if the main PCB may also be affected.
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Repair Difficulty
Medium
3/5
Required Part
User Interface / Display Board
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