Dell Printer Hub and E514DW Printer/Scanner

I have a DELL E514DW Printer/Scanner.

The Dell Printer Hub recognises the Scanner but not the Printer.

The Printer is on the Network

The Scanner is on the Network.

I can scan using the Hub, I can print , for example via MS Word Document and select 'Print'

Can anybody please shed any light on to why the DPH is in denial?