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Störungen / Fehler


Kessel Typ MPO-IQ84

Störungscode Err4

Ursach:

Burner Output (B1) Fault

 

LÖsung:

B1 output sensed powered during safety output relay check sequence or unpowered during running, or powered in idle in combination with water temperature above 264°F limit. Cycle power to the control. Replace control if problem persists.