Linak DESKLINE DESKLIFT Operating instructions

Chapter 4.7 Troubleshooting Page 1 of 13
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Troubleshooting
Table of contents
Section Page
Standard troubleshooting procedures..................................................................................... 2
Procedure 1 (P1) - Initialise the control box (reset)........................................................................... 2
Procedure 2 (P2) - Check all cable connections ............................................................................... 2
Procedure 3 (P3) - Check for obstructions....................................................................................... 2
Procedure 4 (P4) - Check for faulty component(s) WITH error codes................................................ 2
Procedure 5 (P5) - Check for faulty component(s) WITHOUT error codes......................................... 4
Appendix............................................................................................................................... 5
How does the control box function?............................................................................................... 5
Error codes ............................................................................................................................ 6
This troubleshooting guide is for the following DESKLINE®products:
• DESKLIFT™ (DL) columns
- the lifting columns, typically with powder-coated steel profiles, responsible for lifting the
working load of the application.
• Control box (CBD6S)
- both the computer and power supply of the system.
• Desk panel (DP)
- the user interface. Depending on the model, it is used to activate the application, set
memory positions, display the height, display error codes, connect to mobile apps, and give
reminders to the user.
• Motor cable
- transmits low voltage power (18 to 39 V DC) from the control box to the columns, and also
transmits PIEZO™ signals when available from the column.
• Mains cable
- transmits high voltage power (230 V AC or 120 V AC) to the control box.

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Standard troubleshooting procedures
Procedure 1 (P1) - Initialise the control box (reset)
This procedure resets all columns to the fully retracted position so that the control box knows where
they are.
Note: This is commonly the solution when a complaint is that a desk will move down but not up.
When a control box requires initialisation, this is how the system is programmed to behave.
1. Hold DOWN button on desk panel to ensure the columns are retracted to their lower limit
(whether it is the fully retracted hard stop or a configured lower limit).
2. Briefly release DOWN.
3. Press and hold DOWN for 5 seconds, wait until all desk movement has stopped, then release.
3.1. If initialisation is successful, columns will do a slight up/down “handshake” movement.
3.2. If you have a desk panel with display, E01 is displayed during this part of the procedure.
Procedure 2 (P2) - Check all cable connections
1. Mains cable, connected to both the control box and power outlet.
2. All motor cables, connected to both the control box and column.
2.1. Assuming a standard control box configuration, these must be connected in channels
1 and 2, or channels 1, 2 and 3 for a 3-legged table. They cannot be connected
in channels 1 and 3 or 2 and 3 unless there is a configuration on the control box
specifying this arrangement.
3. Desk panel cable, connected to the control box in either port A1 or port A2.
Procedure 3 (P3) - Check for obstructions
1. Check under, above and on the sides of the desk for any obstructions that could prevent
movement in either direction.
Procedures 4 and 5 are for a two-legged desk system. The same concepts can be used for a three-
legged system using Channel 3 and so forth.
Procedure 4 (P4) - Check for faulty component(s) WITH error codes
(digital display on desk panel, or on app via Bluetooth®)
Notes: Check the Error codes list for assistance. The code should read E##. Some error codes are
channel-specific which can help pinpoint the problem.
Symptom Remedy
System will move down but
not up.
1. Initialise (see Procedure 1 (P1)).
System unresponsive
(no power to display when
any button is pressed). If any
of these steps activates the
digital display, initialise the
system (see Procedure 1 (P1)).
1. Check mains cable connection.
2. Test power outlet using another device (lamp, phone charger,
etc.).
3. Plug in a new switch and test.
4. Connect all existing cables to a new control box and test.

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Symptom Remedy
System is powered, but will
not initialise.
1. Try pressing and releasing the DOWN button a few times before
pressing and holding for 5 seconds.
2. Also, be aware if the control box has a special configuration:
If the desk is programmed with a lower stroke limit, so as to
avoid a collision with something like a file cabinet, it is possible
that it also has a custom, longer Forced Initialisation Time. This
is the time required to hold DOWN before initialisation begins.
Sometimes this is 10 seconds or longer.
3. If you have a standard control box without a special
configuration (i.e. with standard configuration), try to initialise
each column in Channel 1 by itself, with nothing else plugged
into the motor channels on the control box. Also, swap the
motor cables so that a different motor cable is used to initialise
Channel 1 by itself. The problem could be a faulty column or a
faulty motor cable.
Channel-specific error
E.g. E41 – Channel 1 overload
(Everything except PIEZO
errors E59-E63)
1. Swap the motor cable connections at the control box (motor
cable #1 from channel 1 to 2, motor cable #2 from channel
2 to 1). If it remains E41, there could be a problem with the
application (load or obstruction on one side) or a defective
control box. If the error changes to E42, go to step 2.
2. Swap the motor cable connections at the columns, so that the
column that was originally connected to Channel 1 is back
in Channel 1, but with the motor cable that was originally
connected to Channel 2. If it remains E42, it is most likely a
defective motor cable, now connected to Channel 2. If it goes
back to E41, it is most likely a defective column, now connected
to Channel 1.
Desk is uneven 1. Initialise the desk. If both columns begin to run down, complete
the initialisation. If only one column moves, stop and go to Step
2.
2. Check motor cable connections. Check to ensure motor cables
are not pulled during movement. With a standard control box, it
is possible that only one column is connected, and connected to
Channel 1. In this case, it will initialise and run Channel 1 only. If
there is only one column but it is connected to Channel 2, it will
not initialise.
3. If a motor cable was disconnected, reconnect the cable and try
initialising again.
4. If unsuccessful, connect the column from Channel 2 into
Channel 1, with nothing in Channel 2, and initialise.
5. Try initialising the same column that is in Channel 1, but with
a different motor cable. If it still will not initialise, replace the
column.

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Procedure 5 (P5) - Check for faulty component(s) WITHOUT error codes
(no digital display on desk panel, no Bluetooth®)
Symptom Remedy
System will move down but
not up
1. Initialise (see Procedure 1 (P1)).
System will not initialise.
OR
System will not complete the
full range of motion.
After each of these steps,
attempt to initialise
(see Procedure 1 (P1)).
1. Check mains cable connection.
2. Test power outlet using another device (lamp, phone charger,
etc.).
3. Plug in a new switch and test.
4. Connect all existing cables to a new control box and test.
5. Try pressing and releasing the DOWN button a few times before
pressing and holding for 5 seconds.
6. Also, be aware if the control box has a special configuration:
If the desk is programmed with a lower stroke limit, so as to
avoid a collision with something like a file cabinet, it is possible
that it also has a custom, longer Forced Initialisation Time. This
is the time required to hold DOWN before initialisation begins.
Sometimes this is 10 seconds or longer.
7. If you have a standard control box without a special
configuration (i.e. with standard configuration), try to initialise
each column in Channel 1 by itself, with nothing else plugged
into the motor channels on the control box. Also, swap the
motor cables so that a different motor cable is used to initialise
Channel 1 by itself. The problem could be a faulty column or a
faulty motor cable.
Desk is uneven 1. See “Desk is uneven” (Procedure 4 (P4)).

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Appendix
How does the control box function?
Many clever procedures, checks and measurements are performed in the control box. Here is a brief
description of what the control box is trying to accomplish while it is activating an application:
• Safe activation of the application
* Parallel, even movement of all columns in the application is critical.
- The control box does not directly know the position of each column. Instead, the position of
each column is constantly calculated via Hall pulses from each motor.
- Motor cable disconnections are also detected as errors.
* If PIEZO technology is present in the column, the control box monitors for PIEZO “collision”
signals from each channel. When a PIEZO signal is sensed, movement is immediately stopped
and, if there is room, the system is ran in the opposite direction a small distance.
* Anytime the control sees an incomplete signal, or more than one signal (multiple keys pressed,
multiple desk panels activated at the same time), an error is determined and no movement is
allowed at that moment. This is to prevent an action of movement that is not intended by the
user.
• Protection from equipment damage
* Internal temperature of the control box is monitored.
* Maximum current draw for each motor channel, as well as the system as a whole, is measured.
When the current exceeds an allowable limit, an error is presented.

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Error codes
Error
code
Name Description Potential cause Remedy
E01 Position Lost The desk has an
unknown position and
needs to be initialised
• Position error
• New column
added
- Initialise the system (P1)
E02 General
Overload Up
Overload in upward
direction has occurred
• Obstruction
• Defective column
or motor cable
- Check all cable
connections, (P2) initialise
the system (P1)
- Troubleshoot components
by initialising 1 at a
time (only possible with
standard configuration)
(P4)
E03 General
Overload
Down
Overload in downward
direction has occurred
• Obstruction
• Defective column
or motor cable
- Check all cable
connections, (P2) initialise
the system (P1)
- Troubleshoot components
by initialising 1 at a
time (only possible with
standard configuration)
(P4)
E08 Watchdog Indicate that software
failed to kick watchdog
• Program fault - Unplug mains cable for 15
seconds
- Initialise the system (P1)
- Replace control box
E09 LIN collision Collisions detected on
the LINbus
• Key pressed on
two or more
connected handset
simultaneously
• Multiple LIN bus
devices activated
- Check if another desk
panel is connected and
being activated
- Unplug all but one desk
panel and test system
E10 Power fail Power fail happened,
or power regulator
adjusted below 10%
• Mains cable pulled
during driving
• Internal fault
• Only 1 battery for
a 3- or 4-channel
system
• “E10 is a power
fail, voltage on
power supply
drops below a
certain limit, power
removed”
- Check mains cable is not
caught, and is allowed to
freely travel
- Use strain-relief loop built
into control box
- Use a 2nd battery; charge
batteries

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Error
code
Name Description Potential cause Remedy
E11 Channel
mismatch
Change in number
of actuators since
initialisation
• Disconnection
• Column added
- Check motor cable
connections and Integrity
(P2)
- Replace motor cable or
column
- Initialise the system (P1)
E12 Position error One channel have
position different than
others
• Too much back
drive occurred
- Move table to fully
retracted position
- Initialise system (P1)
E13 Short circuit Short circuit detected
during operation
• Squeezed motor
cable
• Short in motor
- Check motor cable
connections (P2)
- Isolate and replace motor
cable (P4)
- Isolate and replace
column (P4)
E15 Power limit System has reached its
power limitation
• Mains cable pulled
during driving
• Internal fault
Many times this is
seen this alongside
E10.
E15 is when power
regulator has
adjusted speed
down on actuators
without any
significant current
draw, usually caused
by power supply
dropping.
- Check mains cable is not
caught, and is allowed to
freely travel
- Use strain-relief loop built
into control box
E16 Key Error Illegal keys pressed
(handled internally in
DP1C)
• Hitting multiple
buttons
simultaneously
- Check desk panel
E17 Safety missing LIN bus unit does not
support safety feature
• DP1C/DPF1C does
not have up-to-
date software
- Try DP with more recent
software version (printed
on label)
E18 Missing
Initialisation
plug
A special service tool
is required to change
number of channels to
the system
[BASELIFT Only]
• Service tool
missing from
BASELIFT system
when initialising
- Add service tool

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Error
code
Name Description Potential cause Remedy
E23 Ch1 missing Channel 1 is detected
missing
• Disconnection
• Faulty motor cable
• Faulty motor in
column
- Check motor cable
connections and Integrity
(P2)
- Replace motor cable or
column
- Initialise the system (P1)
E24 Ch2 missing Channel 2 is detected
missing
• Disconnection
• Faulty motor cable
• Faulty motor in
column
- Check motor cable
connections and Integrity
(P2)
- Replace motor cable or
column
- Initialise the system (P1)
E25 Ch3 missing Channel 3 is detected
missing
• Disconnection
• Faulty motor cable
• Faulty motor in
column
- Check motor cable
connections and Integrity
(P2)
- Replace motor cable or
column
- Initialise the system (P1)
E26 Ch4 missing Channel 4 is detected
missing
• Disconnection
• Faulty motor cable
• Faulty motor in
column
- Check motor cable
connections and Integrity
(P2)
- Replace motor cable or
column
- Initialise the system (P1)
E29 Ch1 type Channel 1 is not same
type as when initialised
• Change in column
type
• Loose wire inside
motor
- Check column type
- Replace column
- Initialise the system (P1)
E30 Ch2 type Channel 2 is not same
type as when initialised
or not same type as
channel 1
• Change in column
type
• Loose wire inside
motor
- Check column type
- Replace column
- Initialise the system (P1)
E31 Ch3 type Channel 3 is not same
type as when initialised
or not same type as
channel 1
• Change in column
type
• Loose wire inside
motor
- Check column type
- Replace column
- Initialise the system (P1)
E32 Ch4 type Channel 4 is not same
type as when initialised
or not same type as
channel 1
• Change in column
type
• Loose wire inside
motor
- Check column type
- Replace column
- Initialise the system (P1)

Chapter 4.7 Troubleshooting Page 9 of 13
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Error
code
Name Description Potential cause Remedy
E35 Ch1 pulse fail Channel 1 had to many
pulse errors
• Loose/faulty cable
• Hall sensor PCB
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)
E36 Ch2 pulse fail Channel 2 had to many
pulse errors
• Loose/faulty cable
• Hall sensor PCB
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)
E37 Ch3 pulse fail Channel 3 had to many
pulse errors
• Loose/faulty cable
• Hall sensor PCB
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)
E38 Ch4 pulse fail Channel 4 had to many
pulse errors
• Loose/faulty cable
• Hall sensor PCB
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)
E41 Ch1 overload
up
Overload up occurred
on channel 1
• Column is
overloaded
• Hit obstruction
• Reached end
stop (before
initialisation at
upper end stop
occurs)
- Remove load
- Remove obstruction (P3)
- Initialise if necessary (P1)
E42 Ch2 overload
up
Overload up occurred
on channel 2
• Column is
overloaded
• Hit obstruction
• Reached end
stop (before
initialisation at
upper end stop
occurs)
- Remove load
- Remove obstruction (P3)
- Initialise if necessary (P1)
E43 Ch3 overload
up
Overload up occurred
on channel 3
• Column is
overloaded
• Hit obstruction
• Reached end
stop (before
initialisation at
upper end stop
occurs)
- Remove load
- Remove obstruction (P3)
- Initialise if necessary (P1)

Chapter 4.7 Troubleshooting Page 10 of 13
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Error
code
Name Description Potential cause Remedy
E44 Ch4 overload
up
Overload up occurred
on channel 4
• Column is
overloaded
• Hit obstruction
• Reached end
stop (before
initialisation at
upper end stop
occurs)
- Remove load
- Remove obstruction (P3)
- Initialise if necessary (P1)
E47 Ch1 overload
down
Overload down
occurred on channel 1
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E48 Ch2 overload
down
Overload down
occurred on channel 2
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E49 Ch3 overload
down
Overload down
occurred on channel 3
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E50 Ch4 overload
down
Overload down
occurred on channel 4
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E53 Ch1 anti-col Anti-collision triggered
on channel 1
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E54 Ch2 anti-col Anti-collision triggered
on channel 2
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E55 Ch3 anti-col Anti-collision triggered
on channel 3
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E56 Ch4 anti-col Anti-collision triggered
on channel 4
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E59 Ch1 SLS/PIEZO Safety limit switch
activated
on channel 1
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E60 Ch2 SLS/PIEZO Safety limit switch
activated
on channel 2
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E61 Ch3 SLS/PIEZO Safety limit switch
activated
on channel 3
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E62 Ch4 SLS/PIEZO Safety limit switch
activated
on channel 4
• Hit obstruction - Remove obstruction (P3)
- Initialise if necessary (P1)
E65 Ch1 pulse dir Pulses counted wrong
direction in channel 1
• Motor poles are
crossed
• Hall sensor cables
are crossed
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)

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Error
code
Name Description Potential cause Remedy
E66 Ch2 pulse dir Pulses counted wrong
direction in channel 2
• Motor poles are
crossed
• Hall sensor cables
are crossed
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)
E67 Ch3 pulse dir Pulses counted wrong
direction in channel 3
• Motor poles are
crossed
• Hall sensor cables
are crossed
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)
E68 Ch4 pulse dir Pulses counted wrong
direction in channel 4
• Motor poles are
crossed
• Hall sensor cables
are crossed
- Check motor cable
connections and integrity
(P2)
- Replace column
- Initialise the system (P1)
E71 Ch1A short Short circuit on channel
1
[If T-splitter is used,
short circuit on 1A]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.
E72 Ch1B short Short circuit on channel
1
[If T-splitter is used,
short circuit on 1B]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.
E73 Ch2A short Short circuit on channel
2
[If T-splitter is used,
short circuit on 2A]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.
E74 Ch2B short Short circuit on channel
2
[If T-splitter is used,
short circuit on 2B]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.
E75 Ch3A short Short circuit on channel
3
[If T-splitter is used,
short circuit on 3A]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.

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Error
code
Name Description Potential cause Remedy
E76 Ch3B short Short circuit on channel
3
[If T-splitter is used,
short circuit on 3B]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.
E77 Ch4A short Short circuit on channel
4
[If T-splitter is used,
short circuit on 4A]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.
E78 Ch4B short Short circuit on channel
4
[If T-splitter is used,
short circuit on 4B]
• Damage to motor
cable
• Damage to cable
exiting column (if
applicable)
- Inspect motor cable
for damage, replace if
damaged
- Inspect cable exiting
column (if applicable),
replace if damaged.
E86 Master Connection to master
lost OR following
messages are from
master
[Only used in multi-
parallel system]
• Poor cable
connection to
master box
• If followed by
another error code,
then codes being
communicated
from master box
- Check connection to
master box, check cable
integrity
- If communicating other
error codes, see above
E87 Slave 1 Connection to 1st
slave lost OR following
messages are from 1st
slave
[Only used in multi-
parallel system]
• Poor cable
connection to slave
box
• If followed by
another error code,
then codes being
communicated
from slave box
- Check connection to
master box, check cable
integrity
- If communicating other
error codes, see above

Chapter 4.7 Troubleshooting Page 13 of 13
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Error
code
Name Description Potential cause Remedy
E88 Slave 2 Connection to 2nd
slave lost OR following
messages are from 2nd
slave
[Only used in multi-
parallel system]
• Poor cable
connection to slave
box
• If followed by
another error code,
then codes being
communicated
from slave box
- Check connection to
master box, check cable
integrity
- If communicating other
error codes, see above
E89 Slave 3 Connection to 3rd
slave lost OR following
messages are from 3rd
slave
[Only used in multi-
parallel system]
• Poor cable
connection to slave
box
• If followed by
another error code,
then codes being
communicated
from slave box
- Check connection to
master box, check cable
integrity
- If communicating other
error codes, see above
E93 Desk Sensor 1
– Activation
Detected trigger from
LIN bus safety limit
switch, e.g. DS1
• DS1 was triggered - Remove any obstacles
causing the desk drive to
stop and adjust the height
again.
E94 Desk Sensor 1
– Not
Responding
LIN SLS unit (e.g. DS1)
no longer responding
• DS1 can no longer
be detected
- Check that the DS1 is
correctly mounted.
- Remove the DS1 and re-
insert it