Vaillant Flow Switch
The flow switch acts as a safety instrument. It is a switch with an in-built sensor that sits in the pipework for both the central heating and DHW systems. When the pump is switched on, the flow switches senses this movement and feeds the information back to the PCB, allowing the ignition sequence to progress. The function of the flow switch is to make sure that the burner cannot switch on if the system is dry or low on water.
VAIL 0020211945 FLOW SENSOR
Part No: 1385492 / MPN: 0020211945
HLIN 20213122 FLOW SENSOR
Part No: 2171742 / MPN: 0020213122
VAIL 0020211943 PIPE, FLOW SENSOR
Part No: 1388058 / MPN: 0020211943
VAILLANT 151017 FLOW SWITCH
Part No: 1373911 / MPN: 151017
VAILLANT 0020039708 FLOW SWITCH
Part No: 1382848 / MPN: 0020039708
VAILLANT 151010 FLOW SWITCH
Part No: 1373910 / MPN: 151010