Holman Water Whiz Questions & Answers

My Holman Water Whiz 400 now seems to reset itself when I try and use it in manual mode?
Added to this, one of the zones is continually leaking a bit all the time.....
Any one out there able to assist me?
Thanks.

My WWz200 keeps defaulting back to 7.00 am for the time of day. I can run the unit manually and both solonoids open and close as per the set run time by the actual time of day won't hold as set. I have entered current time and pressed OK.

I have a Holman 400 Water Wizz which I purchased about 2 years ago pre pandemic. It operated well for the first six months watering twice per day over 4 different zones. I turned it off over the last winter due to rain watering the plants. I have attempted to restart the unit today, replacing the 4 batteries with new batteries. I reset the units programming and reinput the program to operate 4 zones twice per day. It operates on zone 1 and does not switch to zones 2, 3 and 4. I am aware it is out of warranty, but I think 6 months operation before failing is worthy of replacement or money back. I bought the unit in good faith believing that Holman made good products. Please advise me what to do to rectify the situation.
Peter

Hi, I have had my water whiz 400 for about a year now.
In the last 2 weeks it's stopped working firstly on Zone 1 & 2, now all 4 zones.
At first it would open amd work manual, but that now has stopped.
I have replaced batteries, rechecked connections and reset the device by holding down the OK button.

Can you provide any other advice please??

Thanks, Justin.

do you have a manual to show how to set up

This is my second Holman Water Whiz 400 and I am having the same problem. This one has served well for nearly 2 years. I have three outlets connected. Of late the Holman is leaking once again from the neck of the unit. The flat top of the white neck has broken off from the body of the main neck. Can this part be replaced? Or do I now need to buy a new one again?
Paul

My holmans whiz 200 is leaking between the hose fitting and the body of the unit
How can I sort it out
Adrian

I Have a Waterwhiz 400 and the zone #1 will not close. I have tried the reset function, the manual running of zone #1 for 1 min etc, but it still will not close zone #1. When I run the manual function on zone #1 it almost instantly shows reset on a blank screen.
Your earliest attention will be appreciated.

I am on to my 3rd 4 zone Holman timer and they keep on failing both in auto timer mode and in manual mode. I can hear a small click and the indicator tap shows it is operating, but nothing is happening. The landscape gardener who installed the first unit confirmed it was not working and has replaced it twice. The third unit he recently installed earlier this week worked for him several times when he tried the zones. I tried it once the next day and it worked, but tried it a second time a while later and it did not work. It worked once earlier today, but will not work now - same symptoms. Is this a common problem? What can be done? Regards, Garry

How do I know if the battery needs replacing? On the face of the Water Whiz 200, does it flash? or does it appear empty? or does solid grey colouring mean that the battery if ok or does it mean it needs replacing? Please advise.

My Water Whiz 400 keeps resetting the time by itself. I have it on Auto, when I come back to it is on 'set time' and the time has changed.
How can I stop it doing this please?

How do i stop water flowing out from under screw on part on top of timer

Do you have to reduce the water pressure going into the 400 because it’s just popping the droppers off at full pressure

Can you set three stations to run every second day and one station to run every day.

After setting the timer water every 6 hours, 12 hours later the timer has switched back to off position. Is there something I am missing?

hello. i have recently set up the water whiz 400 at my fathers place. we ran the system manually and all 3 zones worked perfectly. when i set the timer the next day the timer started counting down and the water signal on the unit came on but the no water is coming out of the tap itself.

I bought a 4 outlet tap timer & it did not work most of the time. It didnt go off as set & also wouldnt work in manual mode.
I went & got a replacement. This morning 1 area went off but another area that was set for 4 times a day did not go off. It shows on the timer that its supposed to be working ( the tap dripping sign is there) but nothing happens.
I cant believe how unreliable it is for the price

How do you set it?

Battery just went flat which is fair enough but one of the valves is now permanently open. I have replaced the batteries and tried to trick it to close by putting on manual but wont close. This is the third unit Ive had, all replaced under warranty at Bunnings, but I cant find the receipt now as this one has been going great for a while. Is there any way to get the valve to close?

Purchased our second one of these about 2 weeks ago and 2 of the valves do not seem to get water to them. Ive turned the taps n and off and swapped it to manual to test but nothing. Is it a faulty system we have.