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Störungen / Fehler


Kessel Typ Q85SN

Störungscode bl85

Ursach:

No water fl ow can be detected throughthe controller. De-aeration cycle is started. When water fl ow is detected during this cycle, the de-aeration cycle is terminated and the burner is released. The controller checks the water pressure during static and dynamic situation.

LÖsung:

-Check the installation for the presence of air;If there is a secondary pump installed and it is not hydraulicly separated, it could cause pressure differences.
-Check the use of balancing valves

-check if the pump is functioning and/or that the water pressure sensor 
is working properly; Polluted pump; Polluted water pressure sensor; Polluted water fi lter; Wiring of pump.