
4-2
Troubleshooting
Table 3-1. Error Messages
Error
Number
Problem
Result
Recommended Action
1 through 62,
69 through 77
Microprocessor or
mechanical error
Deceleration to full
stop; run cannot be
restarted until error
is cleared
After rotor comes to a complete stop turn
the power off, then wait 15 seconds before
turning it back on to reset.
78
Error during closing of door
Run cannot start
1. Remove debris from latch.
2. Close the door, pressing down gently.
3. Turn the power off, then wait 15 seconds
before turning it back on to reset.
81
Door open detected during
run
Maximum decelera-
tion to full stop
After rotor comes to a complete stop, close
the centrifuge door, turn the power off, then
wait 15 seconds before turning it back on to
reset.
82, 83
Door latch malfunction
Door does not open
See
RETRIEVING YOUR SAMPLE
, below.
84
Thermal cutoff switch
activated
Deceleration to full
stop
1. Turn the power off.
2. Check that ambient temperature is within
the specified limits (10 to 35°C).
3. Check, for air inlet and exhaust vent
obstruction. Clean air inlets and exhaust
vents.
4. After the motor has cooled down
(approximately 15 minutes with the door
open), turn the power on to reset the
thermal protector circuit.
85, 87
Chamber overtemperature
Deceleration to full
stop
1. Turn the power off.
2. Check that ambient temperature is within
the specified limits (10 to 35°C).
3. Check for air inlet and exhaust vent
obstruction. Clean air inlets and exhaust
vents.
4. After the motor has cooled down
(approximately 15 minutes with the door
open), turn the power on to reset the
thermal protector circuit.
90 through 96
Defective sensor
Deceleration to full
stop
Turn the power off, then wait 15 seconds
before turning it back on to reset.
98, 99
Incorrect rotor identification
Deceleration to full
stop
Input correct rotor identification.