Our faq

How do I put the appliance into service mode?

To the right of the display window there is a small hole …

Is there a flow switch fitted to the EKW v2 or Herald Boiler?

There is no flow switch fitted to the appliance at manufacture.  It …

I don’t get an output to the pump terminals on my EKW86 – 236/HCB86 – 236?

The pump terminals on these models are provided as a set of …

Is there a Non-Return Valve in the flue outlet of the HCB/EKW v2?

There is no Non-Return Valve in the flue.  If the appliance is …

The display of my appliance is green and not blue. It is still working but why has the colour changed?

The green backlight usually indicates that the service notification has triggered.  This …