Owner's Manual

Medium Duty Operator
GCL-MT
www.geniecompany.com 08-12
8.4
These operators include a self-diagnostic circuit board using
troubleshooting LED indicators to signal the technician of
a problem.
LED Indicators Fig. 6
HOIST
INTERLOCK
TROUBLESHOOTING LED’s
EXTERNAL
INTERLOCK
+ 24 VOLTS
DC
STB
ENABLE
INDICATION
OFF
OFF
OFF OFF
OFF OFF OFF
ON
ON ON ON
ON ON
ON
NORMAL OPERATING CONDITION
STB DISABLED
STB ENABLED
HOIST INTERLOCK SWITCH OPEN:
1) HOIST RELEASE NEEDS RESET.
2) HOIST INTERLOCK CONNECTOR NOT PLUGGED IN.
3) HOIST INTERLOCK DEFECTIVE.
POWER SUPPLY PROBLEM:
1) CHECK AC POWER SUPPLY.
2) CHECK MAIN POWER FUSE.
3) CHECK SECONDARY FUSE (2A).
EXTERNAL INTERLOCK OPEN
TB
N B
+ 4
AC
XT
N LK
OST
N LK
Figure 7
FUSE F2
TROUBLESHOOTING
LED S
STB
ENAB
+ 24
VAC
EXT
INTLK
HOIST
INTLK
DETAIL