Electrical Work on Spas

In Australia, New Zealand and many countries around the world, all electrical work on spas, hot tubs and swimming pools (along with every other aspect of home electrical wiring and appliances) MUST be carried out by a properly qualified / licenced electrical tradesperson.
Failure to ensure work is carried out by a qualified person is illegal and dangerous.

Electrical / electronic components supplied by spatex, that have evidence of installation, cannot be returned for credit or refund under any circumstance unless deemed to have had a warrantable failure. 
It is your responsibility to ensure the service person carrying out electrical work is properly licenced and that they've correctly identified the problem component prior to purchasing or installing.