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ESP-LXD 2-Wire Decoder Control System Installation & Troubleshooting Guide
Troubleshooting
Category
Issue
Potential Cause
Solution
Controller
Alarms
Controller alarm; Zero
Learned Flow.
The Learn Flow Utility has
recorded a zero (0) flow rate
for one or more station.
Turn dial to Flow and Smart Module - Module Status,
select Flow Smart Module, View Flow Rates, View
Station Rates. Check for stations that have a 0 flow rate
and are labeled Learned.
- If all stations have learned a 0 flow check flow sensor/
input connections, Flow Sensor configuration, FloZone
assignments, etc.
- If only one or a few stations have learned a 0 flow rate
check the valve operation (flow control stem position,
solenoid, wiring, etc.).
- If just small flow rate valves/stations (like drip zones)
have learned a 0 flow rate the flow sensor may be
too large for the lower flow rates. Check the product
technical specs for the minimum flow rate of the flow
sensor.
Controller alarm; Flow
Alarm.
FloWatch (flow sensing utility)
has detected a high or low
flow condition.
Turn dial to Flow and Smart Module - Module Status,
select Flow Smart Module, View Flow Alarms, and
review the posted Station and/or FloZone (mainline)
flow alarms. Note the station(s) or FloZone(s) that were
identified. If you configured FloWatch to Diagnose &
Eliminate or Alarm & Shut Down, the problem station(s)
or FloZone(s) will be quarantined. Clear the Flow
Alarms and test the system.
- Station flow alarms – Manually turn on the station.
Turn dial to Module Status, select Flow Smart Module,
View Current Flow. The current and expected flow rates
will be listed. Check the valve & sprinklers to identify
the issue and correct it. If sprinklers or nozzles have
been replaced, relearn the station flow rate.
- FloZone alarms - Manually start a program. Turn
dial to Module Status, select Flow Smart Module, View
Current Flow. The current and expected flow rates will
be listed. Check the water source(s) and mainline to
identify the issues and correct it.
- If FloZone high flow alarms are being triggered by
manual watering (QCV, manually bleeding valves, etc.)
consider using the MV Water Window located under the
Manual Watering dial position. Configure window open
and close times, days of the week, MV(s) you want open,
and the expected additional flow rate to allow for the
manual watering.
