TROUBLESHOOTING
If the unit malfunctions, check out the following before calling for service.
<Attention>
If the malfunction is not resolved after checking the following items or if the malfunction is not shown in
the table below, contact our sales representative or agent.
Malfunction
Nothing operates even
when the power supply
plug is plugged in
The alarm is activated
during operation
No key operation is
available
During setting mode, the
mode returns to
temperature display mode
Excessive noise
The chamber does not
get cold enough
□ The unit is not connected to the power supply properly.
□ The capacity and voltage of the power supply is not sufficient.
□ There is a power failure.
□ The circuit breaker on the supply circuit is activated.
□ The fuse on the supply circuit is blown.
□ The unit is not connected to the power supply properly.
□ The capacity and voltage of the power supply is not sufficient.
□ There is a power failure.
□ The circuit breaker on the supply circuit is activated.
□ The fuse on the supply circuit is blown.
□ The chamber temperature setting has been changed.
□ The door has been kept open for a long time.
□ Containers with a high temperature (load) have been put in the
chamber.
□ The door is open.
□ The key lock is set in ON (L 1).
→ Set the key lock in OFF (L 0).
The unit will return from setting mode to temperature display mode
automatically after 90 seconds if no key is operated (auto-return
function).
□ The floor is not stable.
□ The installation site is not level.
□ The freezer is tilted.
□ The cabinet is touching the surrounding wall.
□ Warm material has been put in the chamber.
□ The door is frequently opened.
□ The chamber temperature setting is too high.
□ The unit is in direct sunlight.
□ The unit is not installed in suitable location as specified in these
operating instructions.
□ The ventilation around the unit is blocked.
□ There is a nearby heat source.
□ The ambient temperature is too high.
□ There are too many items stored inside the chamber.
□ The access port is not covered.
→ The access port should be covered with insulation and rubber caps
when not in use.
□ The door seal is damaged.
→ If it is damaged, contact our sales representative or agent for
replacement.
□ A foreign substance is located between door gaskets.
Check/Remedy
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