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FUSE – Station and MV/PS output alarm
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.
Alert Displays
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