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LM900006 Rev 0_3
19
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Maintenance
Step Nine
TROUBLESHOOTING:
PROBLEM
SOLUTION
Relay switches only from
one input.
Latch is turned OFF. Flip the latch switch to turn ON.
If Latch is ON, then check the input LEDs to make sure
they are switching ON and OFF as the level changes. If
the LEDs do not turn ON and OFF, the either the sensor
is not correctly wired or the sensor is not working.
Pump or Valve is
supposed to start, but it
does not.
First, check to make sure the input LEDs are both in the
same state (both ON or both OFF). If not, check wiring
to each sensor.
Second, check status of Relay LED. If incorrect, flip the
Invert switch to change the relay state.
Pump or Valve is
supposed to stop, but it
does not.
First, check to make sure the input LEDs are both in the
same state (both ON or both OFF). If not, check wiring
to each sensor.
Second, check status of Relay LED. If incorrect, flip the
Invert switch to change the relay state.
Controller is powered, but
nothing happens.
First check the Power LED to make sure it is Green. If
not, check the wiring, power and make sure the terminal
is seated correctly over the 6-pins.