Troubleshooting - Thermo Scientific TSX Series Installation And Operation Manual

Troubleshooting

12 Troubleshooting
Table 9. Troubleshooting Procedures
Problem Cause
Unit does not
operate or
Power supply
Power Failure
Indicator is on
Temperature
Control
Temperature
Condenser clogged
fluctuates
Other causes
12V backup battery
Low battery
needs to be
icon is lit
replaced.
Incorrect Perimeter
Heater Duty Cycle
(Swinging doors only)
Condensation
around door Gaps exist in unit port
frame holes
Door seal is broken
32
TSX -20°C Flammable Materials Storage Laboratory Freezers
WARNING: Risk of Shock. Troubleshooting procedures involve working
with high voltages which can cause injury or death. Troubleshooting should
only be performed by trained personnel.
This section is a guide for troubleshooting equipment problems.
Solution
Check that the cord is securely plugged in.
Plug another appliance into the outlet to see if it is live.
Check that the double pole circuit breaker located next to the power inlet is
in "ON" position (i.e. "I" position). Try cycling to OFF position (i.e. "O"
position) & then bring to ON ("I") position.
Test the voltage and verify that it is correct for your unit (refer to
If the outlet is dead, check the circuit breaker or fuses.
The unit should not be connected to a GFCI (Ground Fault Circuit
Interrupter) protected outlet as it may be subject to nuisance tripping.
Make sure that the control is set correctly. Refer to
Make sure the condenser and filter are clean. Refer to
Section 11.3
.
If the temperature control is set correctly, the condenser is clean, but
temperature continues to fluctuate, call an authorized service
representative.
Replace the battery. It is located on the top right hand side of the cabinet.
Call an authorized service representative.
Increase the Perimeter Heater Duty Cycle, Refer to
Ensure all port holes in the cabinet top, sides, and back are sealed properly to
prevent warm airflow into the cabinet. Seal any gaps.
Verify nothing is placed through the door seal such as a sensor. Check the
door seal following instructions in
Section 9.3
Section 11.2
Section 9.4
Section 11.5
.
Table 2
).
.
and
.
Thermo Scientific