20
TROUBLE SHOOTING
If the unit malfunctions, check out the following before calling for service.
Malfunction Check/Remedy
The unit does not operate
at all.
•
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 operation is
disable
•
The key lock function is set in ON mode.
If the alarm function and
the buzzer operate
[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.
If the chamber temperature
does not match the set value.
•
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.
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.