Replacement Expert VT110 Top Display Board for the AP Expert VT-110 Ventilation Controller. (Complete controller sold seperately).
The Expert VT110 top display board is your controller’s user interface—handling real-time display, navigation, and USB functions.
Replace it if the screen, buttons, LEDs, or USB port are acting up, or switch it out proactively during maintenance cycles.
MPN: E330-0531
Why & When to Replace It:
You should consider replacing this board if:
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Display issues: LCD fails, becomes dim, ghosted, lines/characters missing.
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Unresponsive controls: Buttons or arrows stop working or act erratically.
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LED indicators go dark: You lose status lights (fan, heater, alarm) despite correct operation.
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USB port malfunction: Prevents you from loading new firmware or backing up settings.
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Electrical damage: Socket arcing, burnt traces, water ingress, or corrosion.
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Preventive maintenance: Older units near end-of-life, or you’re preempting downtime.
Without a functioning top board, you’ll lose your primary human–machine interface—(mostly crippled system visibility and usability) even if the controller is still running.