Vaillant ecoTEC Plus System 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 System

Possible cause

Power supply unit for the PCB is defective

Measure

Replace the PCB.

This code also applies to:

ecoTEC Plus Combi

Source: Manufacturer manual (PDF)

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