Dishwasher - how much salt is too much

[Diggory]

I’ve got an integrated LAMONA slim Dishwasher.
It’s about a year old but I’ve only been using it for maybe two months.
I now use it once a day and as I live in a very hard water area; the machine is set to five (highest).
I’m getting through about a kilogram of salt in less than a week; every five maybe six days.
The reservoir lid seats firmly and is not damaged.

I called ‘LAMONA’ and they offered to send someone to look at it as it’s still under warranty.
Before I go this route (and pull it out for inspection) - is the salt usage excessive ?

Thanks D

 

[Wayners]

Should get a month out of it at least. Ours gets filled every 2 months I guess

 

[Diggory]

Thanks reply @Wayners.
So I may well have a fault with it - doh!
I was really hoping not to drag it out.
Anything I could try/check before I call LAMONA.

D