Figaros can have problems with their heater matrix. Sometimes the heater matrix fails due to age and starts to leak, other times the valve pipe can break as the plastic gets weak. We have had made an appropriate uprated copper heater matrix as a replacement part. They do not have or require the water cut off valve, see below..
This heater matrix does not have the same valve as the original unit, the figaros vents are configured in a way where the face vents will only ever blow cold air, when hot air is required the heating comes though the foot and screen vents only.
Using our heater matrix means that the foot and screen vents will only blow hot air. The face vents are not effected and will continue to blow the cold air only.