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Page 17
FUNCTION POSSIBLE CAUSE REMEDY
4.11 Outer Barrier switch is out of
adjustment or defective.
4.12 Full Out switch is not activated or
defective.
4.13 Hand-held pendant not working
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. Adjust or 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 con-
tinuity of the switches. Verify SW1 and Door Open
switches are functioning correctly.
5.11 Hydraulic Down valve bad
5.12 Dirty Down valve (clogged)
5.00
LIFT WILL
NOT GO
DOWN WITH
OVERRIDE
SWITCH
OR WITH
HAND-HELD
PENDANT,
GOES DOWN
SLOWLY OR
LIFT DRIFTS
DOWN BY
ITSELF
Check for power on red “valve” wire from P.C.
board to Down solenoid when pushing override
switch or hand-held pendant button. Replace if
necessary.
Flush valve by operating Up and Down manual
override switches at same time for 4 to 5 seconds
several times.
Troubleshooting Diagnosis Chart
6.00
LIFT WILL GO
DOWN WITH
OVERRIDE
SWITCH BUT
NOT WITH
HAND-HELD
PENDANT
6.11 Full Out switch out of adjustment or
defective.
6.12 SW0 and/or Door Full Close switch-
es out of adjustment or defective.
Check diagnostic LCD for Full Out switch status.
Adjust or replace switch as necessary.
Check switches for proper operation/adjustment.
Adjust or replace switch as necessary.
7.00
LIFT WILL NOT
EXTEND WITH
OVERRIDE
SWITCH OR
HAND-HELD
PENDANT
7.11 Poor plug connections
7.12 Bad In/Out motor
7.13 Bad power and ground
Check harness connections A1, A2, B1 and B2
Check power at motor. Replace motor if necessary.
See 1.00
8.00
LIFT WILL NOT
STOW WITH
HAND-HELD
PENDANT
8.11 Stow Level switch out of adjust-
ment or defective.
8.12 Platform is occupied or out of
calibration
8.13 SW0 and/or Door Full Closed
switches out of adjustment or
defective.
8.14 Handrail Belt
Check diagnostic LCD for Stow Level switch sta-
tus. Adjust or replace switch as necessary.
Remove weight from platform. See Platform
Sense Calibration on page 5.
Check switches for proper operation/adjustment.
Adjust or replace switch as necessary.
Belt must be latched until platform is at stow level
and must be unlatched before platform will stow.