Yaasa Desk Four User manual

Yaasa
Desk Four
Troubleshooting Guide
REV01
03/2023

2
1 LEGEND�����������������������������������������������������������������������������������������������������������������������������03
2 GENERAL INFORMATION ����������������������������������������������������������������������������������������������03
3 POWER SUPPLY�������������������������������������������������������������������������������������������������������������03
4 TROUBLESHOOTING �����������������������������������������������������������������������������������������������������03
4�1 Manual reset �������������������������������������������������������������������������������������������������������������03
4�2 Resetting the control system to factory settings (S0 menu)����������������������04
4�3 Possible irregularities during operation and how to rectify them ��������������04
4�4 Error messages on the hand switch display�����������������������������������������������������06
CONTENTS

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1. LEGEND
Please read the instructions and safety precautions set out in the manual carefully before setting up the desk.
Consult this Troubleshooting Guide if you should experience any problems or error messages. If you have any
further enquiries, please contact our customer service directly.
Position the desk to a nearby socket and plug the power cable into the socket.
2. GENERAL INFORMATION
1
2
SAVE
ARROW KEYS
Raise tabletop/Lower tabletop
SAVE KEY
MEMORY POSITION KEYS 1 & 2 DISPLAY
3. POWER SUPPLY
4. TROUBLESHOOTING
4.1 MANUAL RESET
Most possible errors can be xed through resetting the system manually.
1. Press the tabletop DOWN key and hold until the desk has reached its lowest position (pre-dened
tabletop position)
2. Press the „down“ button again and keep it pressed. First, a ashing „0“ appears on the display. After
that, the desk height is shown on the display again.
3. Release the tabletop DOWN key. The desk is now fully operational again.

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4.2 RESETTING THE CONTROL SYSTEM TO FACTORY SETTINGS (S 0 MENU):
1. Press the memory position keys 1,2 and the tabletop „UP“ key simultaneously. Hold this key
combination for approximately 3 seconds then release all the keys. The symbol S and a number, e.g. S 5,
will be visible on the display.
2. Press the tabletop „UP“ key until S 0 appears on the display.
3. The symbol S 0 is now visible on the display.
4. Press the save key.
5. The control system has been reset to factory settings. A blinking 0 is now visible on the display.
6. Perform a manual reset to enable the height adjustability.
NOTE: THE MENU HAS A TIMEOUT FEATURE OF 5 SECONDS. THIS MEANS THAT THE MENU SWITCHES OFF AUTOMATICALLY
WITHOUT SAVING THE SETTING IF AN ENTRY HAS NOT BEEN MADE BEFORE THE 5-SECOND TIMEOUT PERIOD.
4.3 POSSIBLE IRREGULARITIES DURING OPERATION AND HOW TO RECTIFY
THEM
ERROR MESSAGE CAUSE SOLUTION
Blinking 0 on the display
Error messages visible on the hand switch display:
The metric unit is displayed in
inches and not centimetres
or vice versa
Height adjustability is not enabled
Setting varies from country to
country
Reference note 1: The menu times out
after 5 seconds. The menu shuts down
automatically without saving the
settings when an entry is not made
within the space of 5 seconds.
Reference note 2: When the menu
appears, the symbol S and a number,
e.g. S 7, are displayed. The number
is linked to the parameters of the
control system.
Reference note 3: The height of the
table is not aected due to the chan-
ges made to this function.
Run the manual reset
1. Press the memory position keys
1 and 2 as well as the tabletop
UP keys simultaneously. Hold for
approx. 3 seconds then release all
the keys.
2. The symbol S and a number,
e.g. 7, are displayed
3. Press the tabletop UP key until
the symbol S 5 is displayed
4. The symbol S 5 is now visible
on the display
5. Press the save key
The metric units will now be
shown in centimetres if inches
were previously set and vice versa

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The power unit or control system
is not working
The power supply cable is not
connected
Electronic control system faulty
Hand switch faulty
The resting period was not upheld
Contact with liquids
Plug the power supply cable into
a socket
Contact customer service
Contact customer service
The desk can be used again after
an 18-minute resting period
Contact customer service
The desk wobbles The retaining screws are not
tightened
Levelling feet are not positioned
evenly
Tighten the screws with the tools
provided or using a portable
electric drill
Adjust the levelling feet in such a
way that they both touch the oor
evenly

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ERROR
NUMBER
CAUSE
DESCRIPTION
SOLUTION
SOLUTION
„Hot“ error code displayed
Err C01
Err C02
Err C08
Err C03
„ISP“ error code displayed
„Con“ and „Err“ error codes
displayed
„Err“ and „blank number“ error
codes displayed
Cutout switch enabled due to
overheating
Firmware error
Motor overcurrent
Pulse detection timed out
Power supply excess voltage
A collision has occurred
The system is experiencing a
connection error
Internal error
Wait until the components have
cooled down and the error code
„Hot“ has disappeared. The desk
is now ready to be used again.
Unplug the power supply from the
mains supply and wait 5 seconds.
Plug the power cable back into the
socket and try to move the desk
UP and DOWN.
Release all keys and wait for 5
seconds. Try to move the desk UP
and DOWN.
Reset the system to factory
settings
Release all buttons and wait until
the table has moved approx. 1 cm
against the current direction of
travel
Release all the keys and wait 5
seconds. Try moving the desk UP
and DOWN.
View the table down-below to nd
the solution to the internal error
code displayed
4.4) ERROR MESSAGES ON THE HAND SWITCH DISPLAY

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Error during the coupling
sequence of the power unit
NUMBER DESCRIPTION SOLUTION
Er r C11
Err C13
Err C20
Err C21
Err C22
Err C23
Er r C18
Err C15
Err C19
Err C12
Er r C14
Er r C17
The speed cannot be reached Release all keys, wait for 5
seconds then try again
Excess current in the system
Motor short circuit
Firmware error
Power supply overload
Motor has a faulty voltage
Incorrect rmware
Error in the collision detection
system
Only one power unit is connected
to the power supply
Check the plugs connected to the
power supply and on the top of the
columns. Disconnect all plugs and
reconnect them again. A slotted
screwdriver is required to discon-
nect the motor plug.
Excess current in the system
Excess current in the system
Reset the system to factory
settings
Contact customer care. If
applicable, the motor control unit
may need to be replaced.
Unplug the power supply from the
mains supply and wait 5 seconds.
Reconnect the system and try to
move the desk UP and DOWN.
Release all the keys and wait 5
seconds then try again
Reset to factory settings or contact
customer service
NOTE: A MANUAL RESET MAY BE REQUIRED IF A POWER FAILURE OCCURS OR THE POWER CABLE IS REMOVED WHILE THE
HEIGHT IS BEING ADJUSTED.