Certikin Display / LCD Failure

Display is on but completely blank or unreadable (missing segments, flickering) on Certikin heater.

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.

Possible Causes

Failed LCD module, Loose ribbon cable, Moisture damage to display PCB, Overvoltage to control panel

Safety first: Isolate power before removing the front panel.

Dry the panel: If condensation is present, gently dry the area and improve plant room ventilation.
Reseat ribbon cable: Disconnect and reconnect the cable between the main PCB and display, ensuring correct orientation.
Check for corrosion: Inspect the display board for green/white corrosion and clean lightly if minor.
Test operation: Restore power and see if the display improves.

If the display remains unreadable, the display module or entire control panel will need replacement.

Medium 3/5

Certikin display module / keypad assembly

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