We live 350km away from store... took it home... programmed it and only 1 water station worked properly. First station would sometimes allow manual override and other times it would not open the valve. Station 2 worked how the product should have but then station 3 and 4 did not open the valve at all. I am worried about getting a replacement and having to drive 700km round trip to be disappointed again.

Has worked flawlessly for the last 18 months and will hopefully continue to do so for a while to come. I very rarely review anything but the one star this thing is averaging is not justified in my opinion. Fingers crossed I haven't cursed it by writing this review.

Disappointed to read these reviews as mine has now done the same.
The system has been resetting its time, so unless i check it the system wont come on when required. Middle of summer? Not ideal. Then when i use manual on, put a time in, it starts, i can not use manual off i just have to wait it out... but not the time i input, whatever time it feels like. Sometimes a half hour, sometimes ten minutes. I have tried new batteries even though it made no indication of being low. Still no joy. Sometimes no water comes through (at least once a week)... has anything been changed since the below reviews? Very unsure if i should replace it with the same if i will just get the same model.

Firstly, when these units work, they work brilliantly. But..there is a BUT though. Initially thought it was something I was doing as when I first installed the 400, it intermittently did not allow water to pass through the Water Whiz 400 it when programmed but it has now become more regular. The display shows the tap with water flowing symbol in the top of the screen, the timer clicks to open but no water flows through the designated outlet or any of the other 3 outlets. I also noticed that all the LED screen script light up & the time of day r...

Loved the user interface and flexibility of programming. Four watering zones each with 4 individual programmable runtimes including frequency (select which days to water or the option to choose every second or third day) gives heaps of flexibility.
Unfortunately after a week it simply stopped working reliably. Had it replaced and that unit failed within a couple of days.

I bought the Holman Waterwhiz 400 4 zone watering kit and it's absolutely useless! I returned the first one to Bunnings only to find second had exactly same problems! Despite having pressure valves on each zone the unit is totally unreliable, my new Sir Walter Buffalo lawn had gone brown twice due to sprinklers not turning on as programmed. I've resorted to resort to using my old Pope Rainwave sprinkler to bring it back to life. Yes I contacted Holman but they're full of excuses wanting to blame me when I paid thousands to have professiona...