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Troubleshooting Guide Yaasa Desk Pro II

www.yaasa.eu

6

Err C08

Err C11

Pulse detection timed out 

The speed cannot be reached

Reset the system to factory settings

Firmware error

Motor overcurrent

Power supply excess voltage 

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.

Err C01

Err C02

Err C03

Number 

  Description 

  Solution

Err C12

Err C13

Err C14

Err C15

Excess current in the system

Excess current in the system

Excess current in the system

Error in the collision
detection system

Release all keys, wait for 5 seconds then
try again

Err C17

Err C18

Err C19

Err C20

Err C21

Error during the coupling 
sequence of the power unit

Incorrect firmware

Only one power unit is connec-
ted to the power supply

Motor short circuit 

Firmware error

Reset the system to factory settings

Reset to factory settings or contact
customer service

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 
disconnect the motor plug.

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. 

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