Hello to to you all from a new member.

Could i have your opinions on the following please.

We have a site with 6xDaikin Cassetes(splits)
They were installed coming up to 3yrs ago, so soon out of warranty.
We have no end of problems with comps,boards etc.In fact we have replaced a comp and board on pretty much each one.The customer is quite rigtly a little miifed at the amount of problems that she has endured.
We have carried out all work so far on a free basis(even though we only offer 1yrs labour warranty) apart from receiving Daikins pretty poor labour allowance.
We have had site/installation independently checked and no problems with the job reported.
Daikin are not interested in the problems we have had, but are now not offering a warranty on another system that has gone down.

The customer is now threatening legal action from either our co or Daikin quoting that the goods are not fit for purpose.
What do you think her chances are of winning any case?
I should add that the site is not under a maintenance agreement, and has not had a maintenance carried out as far as we know(certainly not by our co).In our T+C's we state that lack of regular maintenance invalidates any warranty.

Thank You

Toby