Bosch Indoor Display Power / Low Voltage Issue

Indoor unit display or LEDs flicker or are very dim, but the unit still runs.

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

Weak indoor power supply on PCB, Loose display board connector, Fluctuating mains voltage, Failing display PCB

Safety first: Turn off power before accessing the display board.

Steps:

Check connections: Remove the front panel and ensure the ribbon cable between the display board and main PCB is firmly seated.
Monitor voltage: If other appliances also dim or flicker, have an electrician check your home's supply voltage.

Resolution: If only the Bosch AC display is affected, the display PCB or indoor main PCB may need replacement.

Medium 3/5

Indoor Display PCB

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