21
844 MPS Troubleshooting Chart
Light Emitting Diodes (LEDs)
Condition
Open Stop FSW
FCC FCA
Solution
Normal when gate
is half opened
OFF ON ON ON ON None
Normal when gate
is opened
OFF ON ON OFF ON None
Normal when gate
is closed
OFF ON ON ON OFF None
Gate tries to close
when gate is
already closed
OFF ON ON OFF ON Change the limit switch
connection (see Figs. 13, 15, or
17, depending on your control
panel).
Gate tries to open
when gate is
already opened
OFF ON ON ON OFF Change the limit switch
connection (see Figs. 13, 15, or
17, depending on your control
panel).
Gate will not open
or close
OFF ON ON OFF OFF • Check limit switch for open
circuit.
• To test control panel limit
switch logic, remove limit
switch wiring and install
jumpers between the
terminals. Both the FCA
and FCC lights should
illuminate. If they do not,
replace the limit switch.
Motor will not run OFF OFF OFF OFF OFF Check fuses and main 220 VAC
power
Gate will not close OFF ON OFF OFF ON Check that reversing devices
are not triggering the gate to
remain open.
Gate will not open
or close
OFF OFF ON OFF ON Check for a jumper between
terminals 1 and 3. If you have
no stop device, you must have
a jumper between these
terminals.
To Next Page
Loading...
