30
FUSE – Station and MV/PS output alert
The TMC-424E features built-in circuit protection to help prevent damage to the controller caused
by an over-current condition on any output terminal.
If the controller detects an overload condition, it will bypass the affected output and display the
word FUSE with the affected station number identifier(s). All remaining stations will operate as
programmed for automatic operation.
If the condition occurs on the Pump Start/Master Valve circuit, all stations using the master valve
will prompt the FUSE message.
To clear the warning, press any button. The controller will continue to operate as scheduled and
will attempt to run all stations as programmed.
IMPORTANT: Clearing the display does not correct the problem. The controller will
retry the affected station(s) at each programmed watering cycle and bypass the affected
station(s) until the problem is corrected.
Before continuing to operate the controller, identify and correct the source of the problem.
In most cases, the FUSE alert condition is caused by a faulty valve solenoid, pump start
relay and/or shorted wire splice.
FLOW or NFLOW – Flow sensor alarms
When flow monitoring is used, the FLOW error message will be displayed when a station
experiences an over-, under-, or critical-flow error. In this event, the station is skipped, and the
next programmed station in sequence is operated.
Error message NFLOW is displayed if the Nominal flow threshold (flow measured while controller
is idle) is exceeded. When a Normally Open master valve is controlled by the flow module, it will
be activated (valve closed).
To clear the warning, press any button. The controller will continue to operate as scheduled and
will attempt to run all stations as programmed.
SEN – Rain sensor active
When the rain sensor is active and all controller outputs are off, the SEN prompt is displayed.
Rain sensor input can be bypassed with the controller’s Sensor Bypass switch, the Timed
Bypass feature and rain sensor receiver controls. For complete information regarding rain sensor
operation, refer to the user’s guide provided with the TWRS/TWRFS units.
PAUSE – Watering suspended by TMR-1 handheld remote
When irrigation is paused using the TMR-1 handheld remote, PAUSE will be displayed.
NOTE: If an optional Display Language is in use, – x – will be shown.
Appendix C: Display Alerts
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