TROUBLESHOOTING
Page 47 of 53
SERVICEMANUAL
© OHAUS Corporation
Error No. 33:
Open lid while motor is running
• Cause:
The lid of the centrifuge has been opened while centrifuge was running.
• Solution:
Close the lid of the centrifuge. DANGER OF ACCIDENT!
• Cause:
Control switch of the lid lock is defective
• Solution:
Call service department!
Error No. 34:
Lid contact defective
• Cause:
Control switch of the lid lock is defective
• Solution:
Call service department!
Error No. 38:
Lid motor is blocked
• Cause:
Control switch of the lid lock is defective
• Solution:
Call service department!
• Cause:
Lid motor is defective
• Solution:
Call service department!
Error No. 40:
Communication with frequency converter disturbed during
start
• Cause:
Frequency converter is defective
• Solution:
Restart the unit;
Check if the cable is out tight; call service department!
Error No. 41:
Communication with frequency converter disturbed during
stop
• Cause:
Frequency converter is defective
• Solution:
Restart the unit;
Check if the cable is out tight; call service department!
Error No. 42:
Short circuit in the frequency converter
• Cause:
Frequency converter is defective
• Solution:
Call service department!
Error No. 43:
Undervoltage frequency converter
• Cause:
Drop of the supply voltage
• Solution:
Restart the unit;
Check the supply voltage;
Check supply wire for further units
Call service department!
Error No. 44:
Overvoltage frequency converter
• Cause:
Brake resistance is defective
• Solution:
Check brake resistance;
Select lowest brake level and restart the unit
Frequency converter is defective;
Call service department!
