Takagi
Control Board or Display Failure
Takagi water heater display or remote is blank, but power to the outlet is confirmed.
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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 main control board, Loose low-voltage connector to remote, Blown low-voltage fuse, Faulty remote controller
How to Fix / Troubleshooting
Safety first: Turn OFF power before removing covers or working on wiring.
Steps:
- 1. Check internal fuses: With the cover removed, locate and inspect any low-voltage fuses on the PCB. Replace only with identical type and rating.
- 2. Inspect remote cable: Ensure the remote controller cable is securely connected and undamaged.
- 3. Test without remote: Disconnect the remote and see if the unit powers up in default mode (if supported by your model).
- 4. Board replacement: If there is still no display or response, the main control board or remote may be defective and should be replaced by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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