3.6 Error Codes
Error No.
1
2
4
11
12
14
33
FC5706 Centrifuge Service Manual
Description
Imbalance arose
Imbalance sensor is defective
Imbalance switch has been
activated for longer than 5
seconds
Temperature sensor is defective
Chamber over temperature
Problem with the speed sensor.
Lid is closed for a certain time.
The blocking time is shown in the
display and replaced with
"CLOSE Lid".
Open lid while the motor is
running
CHAPTER 3 MAINTENANCE PROCEDURES
Cause
Excessive acceleration at
the sensor
Rotary encoder circuit board
is defective, cable break,
plug is loose (between
control unit to frequency
converter), control unit is
defective
Imbalance switch incorrectly
adjusted, imbalance switch
is defective, cable break,
plug is loose (between
control unit to frequency
converter), control unit is
defective
Temperature sensor is
defective, cable break, plug
is loose (between control
units to frequency
converter), control unit is
defective.
Relay on the controller is
defective, cooling is
defective, heating is
defective, ventilation is
defective.
Rotary encoder circuit board
is defective, cable break,
plug is loosening (between
control units to frequency
converter), motor is
blocked, control unit is
defective, frequency
converter is defective.
Control switch of the lid lock
is defective
3-12
Ohaus Corporation www.ohaus.com
3-18
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