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ecoTEC Pro 24 Combi
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F.01
F.01
Interruption: Return sensor
Vaillant ecoTEC Pro 24 Combi
Possible cause
Return temperature sensor defective or not connected
Measure
Check: Return temperature sensor, plug, cable harness, PCB.
This code also applies to:
ecoTEC Pro 28 Combi
ecoTEC Pro 30 Combi
Source:
Manufacturer manual (PDF)
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