Manual

58
DXi User Manual
Chapter 8: Alerts
Alerts and Corrective Action
For all alerts, upon resolution of the specific problem, be sure to CLEAR all
alerts at the controller.
Reset
Reset alerts are triggered by the controller restarting due to either:
1. a power reset
2. a request by the user or firmware to restart
Clear the alert at the Setup-->Alerts screen.
High Temperature
This alert is triggered when the main board temperature sensor exceeds a threshold
value.
Station Communication Error
This alert is triggered when communication fails between the TM and the specific
station output board terminal.
Master Valve High Current
The controller expects a certain current delivered to the Master Valve to trigger
operation. If the measured current is greater than the expected current, within the
preset tolerances, a High Current alert will be triggered.
Flow Lower Limit and Flow Upper Limit
The Flow Lower Limit and Flow Upper Limit alerts are triggered when the measured
flow is either less than or greater than the expected flow, + or - preset tolerances.
Both alerts display the station number (Stn:) which was on at the time of the
limit violation, the Master Valve (MV1) and/or the Pump, the GPM reading (12) as
measured by the flow meter, and the limit value set for the station. Upon detection,
the controller automatically terminates irrigation on the station and advances to the
next station in the program. Condemned stations will not irrigate again until the
warning has been cleared.
Flow Lower Limit alert may be caused by:
• A malfunctioning valve
• Incorrectly established individual station limits
• Large variations in static water pressure
• Improper regulation
• Line impediments
Flow Upper Limit alert may be caused by:
• Stuck valve (from previous station)
• Broken pipes/heads
• Unreasonable or inaccurate individual station limits
• Large variations in system water pressure
Flow Alert Troubleshooting
1. If station limits are suspected, manually turn each station on and observe the