The inbuilt saftey features of all appliances are that they are failsafe,by that when they fail they just stop working , you take em along to the repair guy and he says "cost to much to fix" throw it away.
Bursting into flames when in use isn't one of the other options .
Fair trading will be able to advise , but I'm sure you've got some recourse
with that warranty as suggested.
Thats a good site Brendon , I never knew it existed , had to check my gut feeling on what " Kosdown Printing Co Pty Ltd" inflatable spas problem could possibly be
cheap electrics lots o water ,, what could possibly go wrong
