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F.00

Interruption: Flow sensor

Vaillant ecoTEC Pro 28 Combi

Possible cause
Flow temperature sensor defective or not connected
Measure
Check: Flow temperature sensor, plug, cable harness, PCB.
This code also applies to:
ecoTEC Pro 24 CombiecoTEC Pro 30 Combi
Source: Manufacturer manual (PDF)
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