Urgent pump problem

Help please.
2011 Nuevo with Whale system
Filled with water today so external pump OK.
Tried to pump water through taps - nothing ; no sign of pump trying to operate with open taps.
Screwed pressure switch adjuster fully in and out ; nothing
Used test lamp across pressure switch connections; nothing. There seems to be a click sound coming from the pressure switch as I press the pump switch.
Checked fuse on 328 unit ; blown
Replaced 10 amp fuse tried pump again : blown.
Is it the pressure switch; hope so because easy to replace. Going away on Saturday.
Help much appreciated.

To avoid anyone’s grey matter working overtime on this I have contacted Whale Technical services who confirm that the pump must be shorting out internally and there is no option but to replace the pump.
So a Shurflo it will be. Will have to cope with our 23 litre container next week.
An additional question about fitting the Shurflo unit I assume it will be OK to fit it in the wardrobe of the Nuevo and it wont be a problem with noise and vibration?
Alternatively I wonder if anyone has fitted a Shurflo in an IP 65 enclosure box externally to the chassis?

Thanks for the reply, just to clarify I didn’t mean in the wardrobe but in the area beneath it above the boiler as I’m sure has been appreciated.

Mine is fixed to a board, which is fixed to the carpentry through a foam sponge pad. Hear it working but no vibrations.