TROUBLESHOOTING: CAUSES AND SOLUTIONS
PROBLEM
POTENTIAL CAUSE
POTENTIAL SOLUTION
No power to Table
No power at wall outlet
Check outlet with another device;
check circuit breakers/fuses/wiring.
Power Cable not plugged
into wall outlet
Confirm proper cable engagement into wall outlet.
Power Cable not plugged
into Control Box
Check that Power Cable is fully seated into Control Box.
(see Fig. 1 on page 5)
Faulty Power Cable
Inspect the Power Cable for damage; replace any damaged cables.
Table wiring not properly
assembled
Check that all cables are connected per the Assembly Directions.
When first plugged in, the Control Box will click twice to confirm
proper connection.
Control Box won’t wake
up from Standby mode
If the Control Box on your Table has been replaced after September
2010, and your Table also has a Digital-Display Controller
manufactured before that date, the old Digital-Display Controller
cannot wake the newer low-consumption Control Box from Standby
mode. Unplug the Control Box from the power source, and plug
it back in to wake the Control Box from Standby mode. The older
Digital-Display Controller should be replaced with a current version
that has the updated programming.
Table will not go up
or down
No power
See above.
Table is severely
overloaded
Maximum load capacity is 295 lbs (133.8 kg) (2-leg)/458 lbs
(207.7 kg) (3-leg). Overloading the Table could lead to damage that
would not be covered by warranty.
Tip: When calculating lifting
capacity, subtract the weight of the worksurface.
Control Box requires
reset
Perform initialization procedure.
(see Common Procedures)
Lower table all the way down, and perform synchronization
procedure.
(see Common Procedures)
Damaged pins inside
multi-pin connectors
(Low-Voltage Cable/
connector)
Ensure the table is in Standby mode (>10 seconds of inactivity).
Unplug each multi-pin connection point and inspect the pins.
Are they all straight and making good contact?
If not, try using a pushpin to straighten them.
(see Fig. 2 on page 5)
(Otherwise, replace necessary components with undamaged versions.)
Damaged Lifting Column
wiring harness
Carefully check the condition of the wiring harness of each Lifting
Column
(see Fig. 3 next page)
. This may require removal of the Lifting
Columns from the Table. If any wiring harnesses are damaged, the
entire Lifting Column must be replaced.
Faulty Lifting Column
To prevent further damage, the Control Box will shut the whole
table down if one Lifting Column is faulty. Test Lifting Columns
(see Common Procedures)
, and replace any faulty Lifting Columns.
Faulty Low-Voltage Cable
Swap with Low-Voltage Cable known to work.
Use an ohm meter to check cables; resistance should be near zero.
High resistance indicates a fault.
Faulty Controller (or)
faulty Controller
receptacle in Control Box
Swap with Controller known to work (and/or) check operation with
Controller plugged into second Controller receptacle in Control Box.
Both receptacles can operate the Table equally; two Controllers can
be plugged in simultaneously, and both will operate the Table.
It does not matter which one you choose.
Faulty Control Box
Swap with Control Box known to work.
Table goes up, but not
down (or vice versa)
Damaged pins inside
multi-pin connectors
(Low-Voltage Cable/
connector)
Unplug Power Cable from wall. Unplug each multi-pin connection
point, and inspect the pins. Are they all straight and making good
contact? If not, try using a pushpin to straighten them.
(see Fig. 2 on page 5)
(Otherwise, replace necessary components
with undamaged versions.)
IMPORTANT NOTE:
This guide applies to models shipped prior to December 2015 only.
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