DNA Engine Tetrad 2 Thermal Cycler Operations Manual
10-4
Tech Support: 1-800-4BIORAD • 1-800-424-6723 • www.bio-rad.com
Remote
Error Code
Error Code
Reason
Action
8
HSO
The heat sink temperature is reg-
istering somewhat higher than
normal. Power levels will be
scaled back slightly until the heat
sink temperature returns to
normal. Adequate airflow is nec-
essary to prevent the heat sink
from overheating.
Please observet he following
guidelines: 1) place instruments at
least 10 cm apart, 2) avoid
placing instruments in any loca-
tion where hot air might enter the
intake vents, 3) place instruments
on a hard surface with no debris
or paper underneath, 4) clean all
air vents and Alpha unit fins of
dust and debris, 5) avoid running
the instrument in areas with
ambient temperatures above
25°C. Continue to use the instru-
ment. If problem reoccurs please
call (800) 4BIORAD (in the US or
Canada), or your local distributor
(outside the US or Canada).
2
HSO-PT
The heat sink reached a tempera-
ture higher than normal, and the
prgram was automatically
stopped. Adequate airflow is nec-
essary to prevent the heat sink
from overheating.
Please observet he following
guidelines: 1) place instruments at
least 10 cm apart, 2) avoid
placing instruments in any loca-
tion where hot air might enter the
intake vents, 3) place instruments
on a hard surface with no debris
or paper underneath, 4) clean all
air vents and Alpha unit fins of
dust and debris, 5) avoid running
the instrument in areas with
ambient temperatures above
25°C. Continue to use the instru-
ment. If problem reoccurs please
call (800) 4BIORAD (in the US or
Canada), or your local distributor
(outside the US or Canada).
5
HS/PS-SF-
PT
Faults have been detected in sen-
sors in the heat sink and power
supply. To prevent overheating,
the program has been automati-
cally stopped.
Call (800) 4BIORAD (in the US or
Canada), or your local distributor
(outside the US or Canada).
23, 21,
or 20
HSSF
An irregularity has been detected
in a heat sink sensor. The sensor
will be checked and you will be
notified if any problem is found.
No action required at this time.