Shady returns policy, no protection for consumers info

Their returns policy offers no protection to a client for out of box failures. One would need to install a unit to know if it's working and once it's out of the box it's a gamble. We purchased one of the Must inverters, it did not switch on at all after being installed and is currently still with Solar ways for assessment. It's been almost 4 weeks. When you buy a washing machine and it doesn't switch on you can at least exchange it. Not here, you're at their mercy and apparently they have a massive backlog which speaks to the quality of their products. I doubt that this is acceptable in the consumers act and will be seeking legal advice on the matter. Buying on this basis is a huge risk! Below is their policy: STRICTLY NO REFUNDS OR EXCHANGES ON ANY PRODUCTS THAT HAVE BEEN INSTALLED, SCRATCHED OR DAMAGED IN ANY WAY. WARRANTY RETURNS REQUIRE A MINIMUM OF 7 – 30 WORKING DAYS TO BE ASSESSED OR REPAIRED.