Troubleshooting Guide - Thermo Scientific TSX Series Installation And Operation Manual

Troubleshooting Guide

This section is a guide to troubleshooting general operational problems.
Problem
Unit warming.
Unit set to –80 °C but
cannot make temperature
(Not reaching setpoint).
Unit recovers slowly to
setpoint.
User interface (Display)
failure.
Unit is ON but display is
showing empty.
Display is looking dull.
34 | Troubleshooting Guide
Cause
Warm load / Overload.
Hot environment.
Dirty condenser and
condenser filter.
Not enough space for air
circulation.
Icing/Frost due to high
relative humidity.
Excess frost build-up in
chamber.
Frost build-up on outer
door gasket.
Gasket damage.
Prolonged door openings.
Inadequate power supply.
Breaker switch off.
User interface not
powered on. Unit power
failure.
Unit power failure
User interface not
powered on.
Screen brightness is too
low.
Solution
Allow ample time to recover from loading warm product.
Do not overload cabinet.
Refer to Initial Loading
procedures.
Check, if the location meets ambient requirements
(within 32 °C to 40 °C or 90 °F to 104 °F) and away from hot
objects.
Clean condenser and filter. Refer to
and Cleaning the Condenser Filter
Install the unit in a level area free from vibration with a
minimum of 8 inches (20 cm) of space on the top and sides,
6 inches (15 cm) in back.
Check if the location meets requirements. Maximum relative
humidity 60% for temperatures within 15 °C to 32 °C
(59 °F to 90 °F).
Defrost the unit. Refer to
manual.
Wipe with a soft cloth or cryo-gloved hand.
Check for punctures or tears on gasket. Replace if necessary.
Refer to Gasket Maintenance
Avoid opening of door for longer duration. Allow ample time
for recovery after door opening.
Check for proper voltage and currents are supplied to the
unit.
Check circuit breaker and reset to on position. Always use a
dedicated, properly grounded circuit.
Push power button on user interface and hold for at least
1 second.
Apply proper power to the unit.
Push power button on user interface and hold for at least
1 second. Try touching the screen.
Try restarting the unit manually by flipping the breaker at the
front of the unit. If this does not work, call service.
From the settings screen, pressing the display button will
show the display.
Adjust the brightness level of the display (Refer to Users).
in user manual for loading
Cleaning the Exterior
in user manual.
Defrosting the Freezer
in user manual.
Ultra Low Temperature Freezers
in user