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Troubleshooting
Diagnostic
Message
SYS (system)
POWER
DRIVE
REFR
(refrigeration
system)
TEMP
—
4-4
Table 4-1. Diagnostic Message Chart (continued)
Problem
There is a problem with the
system control software, EPROM,
or RAM
Momentary power failure; rotor
does not come to a complete
stop
Power failure; rotor comes to a
complete stop
Drive system malfunctioning (for
example, over current, over/
under voltage, components over
temperature)
Refrigeration system
malfunctioning
System temperature goes above
+4°C or below –2°C of set
temperature after set temperature
is reached
Actual temperature exceeds
+8°C over set temperature
During low-temperature runs
(near –10°C), ice forms around
the door opening
Result
System shuts down
Run continues when
power resumes; elapsed
time continues counting
from current value
Run restarts when power
resumes; elapsed time
starts counting from 0
Run stops, usually with
no brake. Door may not
unlock for up to an hour.
Run shuts down with
maximum brake
Run continues. TEMP
display continues to show
rotor temperature ±2°C.
Run shuts down with
maximum brake
Door will not open at the
end of a run
Recommended Action
Call Beckman Coulter Field
Service.
•9HA7T—
Press
to stop LED
from flashing.
•9HA7T—
Press
to stop LED
from flashing.
Call Beckman Coulter Field
Service. Before trying to
open the door, listen carefully
and make sure that no sound
is coming from the chamber
(indicating a spinning rotor).
Follow the directions under
ACCESSING THE ROTOR IN
,
CASE OF POWER FAILURE
below.
Call Beckman Coulter Field
Service.
If the rotor temperature does
not affect your protocol, press
•9HA7T—
and let the run
continue. Otherwise, press
•UVQR—
and call Beckman
Coulter Field Service.
Call Beckman Coulter Field
Service.
Press firmly in several
locations around the door
opening, then depress the
foot pedal again.
To minimize icing, wipe mois-
ture from the chamber, the
chamber gasket and the
inner door surface before
each run. Keep the door
closed as much as possible.
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