Totally unfamiliar with this boiler.
From the fault finding instructions, hope it helps:
DHW flow is poor
If DHW floor is poor or boiler does not start when hot water tap is open, check following:
Cold water supply pressure is at least 1 bar.
Check if the cold water filter or flow regulator (plastic “O” ring) is not clogged.
Check free movement of the magnetic shunt (mounted inside cold water filter).
Note: The Hall Effect Sensor is polarity sensitive, consequently the magnet must be kept in the exact
position. Before completely dismantling the Flow Detector, print a mark on the visible face of the magnet, in
order to reassemble it with the right polarity.
Carefree, August 2010
