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TROUBLE SHOOTING
If the unit malfunctions, check out the following before calling for service.
Malfunction
The unit does not operate
at all.
The key operation is
disable
If the alarm function and
the buzzer operate
If the chamber temperature
does not match the set value.
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.
• The unit is not plugged correctly into a power outlet.
• The circuit breaker at the power source is active.
• A power failure has occurred.
• A fuse has blown.
• The key lock function is set in ON mode.
[At the beginning of operation]
• The chamber temperature does not match the set value.
[During operation]
• Has the set temperature value been changed? Has the door been left
open for a long time?
• Has a low-temperature object been placed in the unit? In this case,
the alarm will be automatically cleared in a while.
• Is the temperature in the vicinity too high? The ambient temperature
must always be at least 5 °C less than the set temperature. If the
ambient temperature rises by the value above, consider the air
conditioning in the room.
• Is the unit installed tilted? Install the unit horizontally.
20
Check/Remedy
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