Alarm 14 Water Wizard 2.0

My Alarm 14 on Water Wizard 2.0 keeps coming on. Boom comes half way down in front of vehicle goes back up and machine goes back to home position and says exit. Alarm is no boom motion detect by drive on upward position. Any help is appreciated.

You've got several proximity switches on the boom . You have two boom counting proximity switches that travel with the the boom and the boom home proximity switch located up high and a bottom boom proximity switches. It's probably one of the count proximity switches. Look on the door and locate these functions on the input card. One count. bottom limit, and the boom home is on input card 2008 and the other count switch is on 2010 I believe. The corresponding light on the input card should light up when the target is in front of the proximity switch and off when there is no metal in front of it. Again I'd look at the count switches first but check the boom home. If you have to you can run the unit without the bottom limit so you can rob one from there if in a pinch. It will not successfully pass a boom test though without the bottom limit.

ETA: You can do a boom count test in the tech menu. If it tests there OK but not while the wash is spraying its possible you've probably got a spacing issue on the proximity switches as the boom is being influenced by high pressure.

Thanks I have changed all the prox and still the input card blinks. It may be a bad cable. Thanks for your answer . You was very informative!

he gave you great advice....

A/B sensors first, then their respective wires... make sure the boom AB sensors aren't coming away from the flags when the boom tilts (often caused by the nylon pillow block bearing that holds the boom on its rails wearing out and having too much play)


I've had this error twice this year on different machines, one was a wire, and another was the bearing wearing out.

Coleman now makes an upgrade kit that changes to a count wheel mounted on the shaft for the boom count. It's pretty inexpensive, less than $100 if I recall.