Holman Water Whiz 400

Bought from Bunnings before start of last seasons Tomatoes in Greenhouse. Saved my bacon. Now in use for its second session - (repaced battery even though it still showed full). Running without a problem. Once you get the various settings right, you can go away with peace of mind.Found these adverse reviews whilst tryin to purchase another unit to water the rest of my garden during the Christmas break. Will keep my fingers crossed. Cheers.

Worked fine for one summer of watering, now only works about 20% of the time. Most times when it comes on (either manually or via schedule) the display indicates that it's on but no water flows. Started happening intermittently but now happens all the time. Have changed out batteries to no avail.

Bought first unit from Bunnings. Zone 4 solenoid not functional. Returned and swapped with a second unit. Zones 1 and 2 not working! Very frustrating. Wish I'd seen this website first. Looks like it is hard to find a decent 4 zone programmable tap timer that actually works.

Bought from Bunnings worked great for two weeks. Then solenoids failed in 2,3, and 4 so I could only use the first line. I wished I’d seen this website before I purchased this and saved my time and money.

We have now got three of these things. They work on occasions most of the time they are useless attachments on the tap that waist more time fiddling with then it would take to hand water. DON'T WASTE YOUR MONEY.

I have now had a gardener, a landscaper and a handyman all attempt to get this completely useless instrument working. When I add up my time invested and theirs, it demonstrates what a poor choice I made. Do not waste your money or time!

Have had one for over a year so cant return now, but manual watering doesnt work and program watering doesnt always come on, bought another one 2 weeks ago for the front yard, the manual watering and programmed watering doesnt work so will be taking back asap, waste of money specially when it cost $160

I want to like this product because it is simple, light, easy to install and program and comes with a 2 year warranty. For the short time it is fully working, it's good. However, the reality is that like all the other reviews you'll find of this product, zones stop working for no apparent reason, meaning that some watering cycles may not start and manual watering won't work for those zones. I saw zones operating if they started due to a scheduled watering cycle, but moments later they wouldn't start if you set the zone to manually on. Sometimes...

Like all the other poor reviews, says it is watering in either auto or manual but no water comes out. We had it set while we were away and came back to carnage.

Avoid or at least keep your receipt, you'll be returning it within 3 months.

Product worked perfectly, then showed signs of poor power supply. Changed batteries, same problem. Put a thin cardboard packer in battery compartment to improve contact, end of problem. Such a brilliant design, other than poor connection.

The first unit worked irregularly, replaced it, second one started leaking, third now working irregularly. All of this within 2 months of purchasing, will be returning for a refund now.

This product does not deserve 1 Star.

Like most people it says it’s watering but nothing happens. Bought it today and immediately failed, never worked, replaced 3 hours after the original purchase and the second unit worked once and then nothing.

This is beyond a joke considering it is not a cheap timer.

I bought this to water a property I own in the country that I do not live at . Like the other reviews, the valves to not switch on even though the screen shows water is on. This is both on manual and auto . So disappointed when you see your garden dying because this thing does not come on. I’m astounded that this is a known issue for a few years now and it is being still made and sold . What a waste for such an expensive timer

This is garbage. Purchased both th 200 and 400 series. 200 has been swapped out once and now have the same problem with the 400. It doesnt water even though it indicates it is. Also zone 3 manual operation doesnt work on its own.

Does NOT work! Did not come on the morning we were to go away and could not even get it to function on manual. Went online to check reviews and low and behold people with exactly the same problem. NOT RELIABLE!