The AT201 uses a single 9v Alkaline or Lithium battery in the Control Unit. The AT301 also uses a single 9v to operate the Valve as well as 2x AA Alkaline batteries to operate the radio in the Control Unit. The Control Panel uses 3x AA alkaline batteries. You must NEVER use standard heavy duty batteries, it will not work properly.
If your system uses Alkaline batteries, they will last from one to three years. If your system uses lithium batteries they will last from two to five years. Battery life is very dependent on climate, amount of use, battery quality and battery brand. Always use good quality batteries such as Energizer, Duracell or Toshiba etc.
If your battery goes flat and your AquaTrip turns off the water, and you do not have a replacement battery handy, you can turn the water back on by rotating the Control Unit a half turn anti clockwise. Remember to replace the battery and then re-engage the AquaTrip by rotating it clockwise again. Do a system function test at this point to make sure it is working correctly. Please refer to your Owners Manual for instructions how to do this, it will take about one minute to complete.
If your AquaTrip shuts off the water, it means it has seen water flowing constantly for longer than the maximum Flow Time which you have programmed in to it. First, reset the AquaTrip to turn the water back on, and then go and look for a tap left running, a dripping shower or a toilet cistern overflowing into the bowl. If you cannot find the cause, press the button on the Control Unit and see if flow is still being registered. If the AquaTrip still sees flow, then you definitely have a leak somewhere. 90% of the time it will be easy to locate the problem. However if the leak is not apparent, turn off the supply to the toilets then recheck for flow at the AquaTrip. Toilets are the biggest cause of small leaks which left unattended waste large amounts of water as they flow continuously and are hard to spot as the leak is usually silent. A simple way to check is to put a piece of tissue paper at the back of the bowl and see if it gets wet. If you cannot find the leak, you may need to call in a specialist leak detection company.