BIO RAD PowerPac Instruction Manual page 16

Problem Cause
E09 RESISTANCE Change in load
CHANGE DETECTED resistance detected.
The PowerPac HC
CELL & CABLES detects drastic changes
* PRESS STOP KEY in resistance which
may indicate failure
of the cell's power
leads or a loose
output connection.
• Loose ouput
• Cells added or
Note: Certain applications
exhibit intrinsic fluctuations
in resistance that can
trigger the Resistance
Change error message. If
this is the case, the
Resistance Change
detection feature can be
deactivated to allow an
uninterrupted completion
of the run. See Section 3.4
for details on turning off
RRCd.
Caution: Deactivating this
safety feature increases
the possibility that a
failure of the power
leads or loose output
connections will not be
detected.
E11 GROUND LEAK Insulation failure in the
DETECTED electrical connections
outside the power
CELL & CHILLER supply has caused a
* POWER OFF/ON current flow that may
create an unsafe
condition.
E16 FAN FAILURE The fan is not
FAN GRID working, either due to a
* POWER OFF/ON electrical failure or
physical obstruction.
E17 SYSTEM Fan vents blocked and or Clear a space of at least 6 cm around
OVERHEATING ambient temperature
too high.
FAN & RM. TEMP
* POWER OFF/ON
Solution
Check and correct any potential
resistance problem.
Verify all electrical connections.
Verify buffer levels are appropriate.
connections leading
to intermittent
connection to the
loads.
removed during the
run.
Check electrical connections and check
cell/chiller system for leaks. Ensure
that the electrophoresis cell rests on
an insulated, dry surface.
Inspect the fan grid to check if the fan
blade is rotating when the power
supply is turned "ON". Make sure no
foreign material has penetrated the
fan vent. If problem persists, contact
Bio-Rad.
the fan vents to improve airflow. Press
any key to go to the home screen to
restart. Operate the unit within the
recommended temperature range
(0 to 40°C)
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