24
TROUBLESHOOTING
If the unit malfunctions, check out the following before calling for service.
Malfunction Check/Remedy
The chamber is not cooled
at all
■ The circuit breaker of power source is active.
■ The voltage is too low. (The status code “--2” is displayed. See
page 18.) In this case, call an electrician.
■ The power switch is not ON.
The cooling is poor ■ The large amount of articles (load) is stored in the chamber at
one time. (The status code “--3” is displayed. See page 18.)
■ The ambient temperature is too high. (The status code “--1” is
displayed. See page 18.)
■ The latch of inner door is not closed completely. The outer door
is not closed firmly.
(The frost or ice between the cabinet and door gasket possibly
prevents door seal.)
■ The air intake vent is blocked.
■ The condenser filter is clogged. Always clean the filter when the
filter check lamp is lit.
■ The set temperature is not inputted properly.
■ The freezer is not away from the direct sunlight.
■ There is any heating source near the freezer.
■ A rubber cap and insulation for the access port are not set
correctly.
■ You put too many unfrozen articles into the freezer compartment.
Alarm test key cannot
activate the alarm
■ The alarm is activated only when the power switch is ON.
■ When only the buzzer or only the alarm is actuated by the alarm
test key, the unactuated part is out of order, and must be replaced.
Noise
■ The freezer is not installed on the sturdy floor.
■ There is anything touching the frame.
■ The freezer is not leveled with the leveling feet.
■ The freezer is in the status immediately after start up.
The unit sometimes causes a noise when the chamber temperature is
high due to the large load. The noise gets less and less accompanying
with the cooling of the chamber.
Back-up test switch does
not operate normally (when
the backup cooling kit is
installed)
■ The liquid carbon dioxide tank is empty.
■ The valve of the carbon dioxide tank is not opened.
■ The ambient temperature is too high. In this case, move the tank
to a cool location.
Inquire at liquid carbon dioxide suppliers about its check,
adjustment, installation, or move.
Note:
If the malfunction is not eliminated after checking the above items, or the malfunction is not shown in the
above table, contact our sales representative or agent.
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