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F.65

Fault: Electronics temp.

Vaillant ecoTEC Pro 30 Combi

Possible cause
Electronics defective or too hot due to external influences
Measure
1. Check: PCB. 2. If required, reduce the environmental temperature.
This code also applies to:
ecoTEC Pro 24 CombiecoTEC Pro 28 Combi
Source: Manufacturer manual (PDF)
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