Vaillant ecoTEC Plus Combi F.194 – The power supply unit for the PCB is defective. | BoilerTool

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F.194

The power supply unit for the PCB is defective.

Vaillant ecoTEC Plus Combi

Possible cause

Power supply unit for the PCB is defective

Measure

Replace the PCB.

Source: Manufacturer manual (PDF)

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