- 41 -
Trouble
Cause
Measure
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Watch-dog
* All indications
disappear, and any
key operation is not
accepted.
All controls are
stopped.
It detects the crush of temperature
controller by excessive noise, and stop
the microprocessor.
The unit can recover if the noise is
solved and the unit is turned off once
and started up again. Though some
of backed up data may be cleared.
Run the zero clear operation.
(Refer to the page 48 of the key
operation manual.)
Pressing [Clear] key can cancel the alarm
message and stop the buzzer sound.
Otherwise the buzzer stops automatically 15
seconds later, even if you do not press
[Clear] key. The door alarm buzzer stops
about 1 second later.
However, the alarm that stops the control
operation cannot be released completely by
[Clear] key.
Turn off the power switch once, and turn on
it again.
If the alarm cannot be released, or when the
alarm occurs frequently even though the unit
is restarted, run the zero clear operation to
return all settings to default values before
shipment. (Refer to page 48 of the key
operation manual.)
If that alarm still occurs, it is presumable that
some parts cause troubles.
Call your local dealer or closest customer
service center and inform them the current
detailed status and the indicated alarm
message.