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FUNCTION POSSIBLE CAUSE REMEDY
4.11 Outer Barrier switch is not
activated or defective.
4.12 Full Out switch is not acti-
vated or defective.
4.13 Hand-held pendant not work-
ing properly.
4.00
LIFT WILL
GO UP WITH
OVERRIDE
SWITCH BUT
NOT WITH
HAND-HELD
PENDANT
Check diagnostic LCD for Outer Barrier switch sta-
tus. Barrier is down or barrier release pin partially
out. See Outer Barrier Occupied Calibration on
page 5. Replace switch as necessary.
Check diagnostic LCD for Full Out switch status.
Adjust or replace switch as necessary.
Check for hand-held pendant illumination and
continuity of the switches. Verify Door Open switch
is functioning correctly.
5.11 Hydraulic down valve bad
5.12 Dirty down valve (clogged)
5.00
LIFT WILL
NOT GO
DOWN WITH
MANUAL
OVERRIDE
OR WITH
HAND-HELD
PENDANT OR
GOES DOWN
SLOWLY
OR DRIFTS
DOWN BY
ITSELF
Check for power on red wire from P.C. board to
Down solenoid when pushing override button or
hand-held pendant button. Replace if necessary.
Flush valve by operating Up & Down manual
override buttons at same time for 4 to 5 seconds
several times.
Troubleshooting Diagnosis Chart
6.00
LIFT WILL GO
DOWN WITH
OVERRIDE
BUT NOT WITH
HAND-HELD
PENDANT
6.11 Full Out switch out of adjust-
ment or defective.
6.12 Door Full Close switch out of
adjustment or defective.
Check diagnostic LCD for Full Out switch status.
Adjust or replace switch as necessary.
Check switch for proper operation/adjustment.
Adjust or replace switch as necessary.
7.00
LIFT WILL NOT
GO OUT WITH
HAND-HELD
PENDANT
7.11 Missing shunt
7.12 Door Open switch out of adjust-
ment or defective
Verify shunt (jumper) is located in the Door Opera-
tor 4-conductor jack (jumper pins 3 & 4) on the
control board when door operators are not used.
Check switch for proper operation/adjustment.
Adjust or replace switch as necessary.
9.00
LIFT WILL NOT
STOW WITH
HAND-HELD
PENDANT
9.11 Stow switch out of adjustment
or defective.
9.12 Platform is occupied or out of
calibration.
Check diagnostic LCD for Stow switch status.
Adjust or replace as necessary.
Remove weight from platform. See Platform
Sense Calibration on page 5.
8.00
LIFT WILL NOT
GO OUT WITH
OVERRIDE OR
HAND-HELD
PENDANT
8.11 Poor plug connections
8.12 Bad in/out motor
8.13 Bad power and ground
Check harness connections A1, A2, B1 and B2
Check power at motor. Replace motor if necessary.
See 1.00