Troubleshooting
What do I do if I get false triggering?
False triggering is almost always caused by one of the following issues:
● Sensitivity threshold is too low
With any detection device, there is a tradeoff between detection sensitivity and false triggering. If
other methods of reducing false triggering are not working, consider raising the sensitivity
threshold to a higher value.
● Abrupt water flows
Fast water flows through plastic pipes and appliances can cause false triggering.
What to do:
○
Make sure nodes are at least 6 feet from any appliances that pump water (dishwashers, ice
makers, condenser units, etc).
○ Make sure nodes are at least 6 feet from plastic water pipes.
○
Try setting the trigger count to 3 and trigger period to 1 minute.
● Large movement near the perimeter of the detection area
When walls are thin materials like drywall and glass, the system may become sensitive when
someone moves on the outside of the detection area.
What to do:
○ Make sure that all nodes are at least 6” away from swinging doors on the outside of the
detection area.
○ Make sure no nodes are placed in window sills.
○ Try placing a 12” x 12” sheet of foil or metal plating on the outside of the nodes to prevent
the RF waves from traveling to the outside of the detection area.
○ Try moving nodes away from the problematic area.
●
Trees and wind
Xandem TMD is not designed to be used in areas near trees. When trees blow in the wind it can
cause repeated false triggering.
What to do:
○ Move the nodes further away from the trees.
○ Remove trees and foliage from the area.
●
Rain and snow
Heavy precipitation can cause TMD to false trigger.
What to do:
○ Try placing nodes where precipitation will not directly hit the TMD node enclosures.
○ Try setting the trigger count to 3.
○ Try increasing convergence to 10.
Copyright © 2015 XANDEM
TMD User Guide (Rev C.2) Page 22
