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No water fl ow can be detected through the controller. De-aeration cycle is started. When water flow 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.
-Check the installation for the presence of air;If there is a secondary pump installed and it is not hydraulicly separated, it could causepressure 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 filter;
Wiring of pump.
