20 | Troubleshooting
Centrifuge GT 4 / 4R
Troubleshooting by User
If problems occur other than those listed in this table, a service technician must be contacted.
Failure
message
Problem with centrifuge
Possible causes and cures
Overtemperature
The centrifuge cannot be
operated.
The run does not start or the
centrifuge runs down without
being braked.
Overheating in chamber.
Check the function of the refrigeration unit.
Clean the air inlet for the condenser.
Restart the centrifuge.
If an error message appears again, contact Unity Lab Services.
Incorrect bucket ID The centrifuge cannot be
operated.
The run does not start or the
centrifuge runs down without
being braked.
Bucket code is undefined for the rotor detected, check the set
points for the given bucket code.
Check if it is permitted to use the current bucket in the rotor
currently mounted.
Restart the centrifuge.
If an error message appears again, contact Unity Lab Services.
Unapproved rotor
The centrifuge cannot be
operated.
The run does not start or the
centrifuge runs down without
being braked.
Rotor code is not in the rotor table.
Check if it is permitted to use the rotor currently mounted in
this device.
Restart the centrifuge.
If an error message appears again, contact Unity Lab Services.
Rotor ID failure
The centrifuge cannot be
operated.
The run does not start or the
centrifuge runs down without
being braked.
The rotor could not be identified.
Check to see if the rotor is properly installed.
Restart the centrifuge.
If an error message appears again, contact Unity Lab Services.
Lid blocked
Centrifuge does not open
Restart the centrifuge.
The emergency lid release enables you to retrieve your
samples.
If an error message appears again, contact Unity Lab Services.
Motor overtemp.
The centrifuge cannot be
operated.
The run does not start or the
centrifuge runs down without
being braked.
Restart the centrifuge.
If an error message appears again, contact Unity Lab Services.
PCB overtemp.
The centrifuge cannot be
operated.
The run does not start or the
centrifuge runs down without
being braked.
Restart the centrifuge.
If an error message appears again, contact Unity Lab Services.
