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Overheat preventive device activates at approx. 120
℃
(no-liquid heating)
Safety functions
Safety unit
Operation
Causes
How to recover
Fuse
The fuse will blow to shut off
power when overcurrent flows.
The power circuit was short-circuited
or was subjected to overcurrent.
See P15 “7-2 How to replace
fuses”.
Over heat
preventive device
(high limiter)
Shuts off power to stop control
when the temperature in the
bath reaches the set
temperature for the overheat
preventive unit.
The unit is heating without any load.
The temperature controller was
malfunctioning and the temperature
in the bath rose above the set
temperature of the overheat
preventive unit.
See P13 “5-4 How to
recover the overheat
preventive unit”.
3-2 Alarm functions
The product has the following safety functions.
If you encounter with an abnormality, take appropriate
measures referring to P.14“Possible causes of troubles
and solutions”.
Appears
alternately with the
liquid temperature
・
The measured temperature exceeds the upper limit setting of the
temperature.
Check the upper limit temperature setting by referring to “P11 5.3 How to
set the alarm function”. You clear the display with the SET key if the
measured temperature is below the setting.
If you cannot release the alarm, stop operation and contact your dealer or
the nearest service center.
Temperature upper limit
alarm (control stop)
•Measured temperature is below the lower limit of the measurable
temperature range (0
℃
).
•Measured temperature exceeds the upper limit of the measurable
temperature range (210
℃
).
Remove any causes or heating or cooling in the unit.
Then check the liquid temperature and the environmental temperature and
take care to keep the temperature in the safety range.
You can clear the display with the SET key if the measured temperature is
within the safe temperature range
（
0
～
210
℃
).
If you cannot release the alarm or the measured temperature is obviously far
different from the actual temperature, immediately stop operation and contact
your dealer or the nearest service center.
Outside the measurable
temperature range alarm
(control stop)
Name / (operation)
Display
Causes and how to recover
Temperature sensor
alarm (control stop)
・
The temperature sensor in the product short-circuited or had a
disconnection.
When this alarm is displayed, immediately stop operating the unit and
contact your dealer or the nearest service center.
Power outage recovery
alarm
（
Differs depending on
the A-4 setting
）
・
Power was shut off during temperature control and power was turned on
again.
You can clear the display with the SET key.
You can set whether temperature control is stopped or continued during
alarm display by setting ON/OFF for the power outage recovery function
(See “P11 5.3 Setting the alarm function” ).
When you cannot clear the display with the SET key or the ON/OFF setting
of the power outage recovery function is not apparently reflected, stop
operation and contact your dealer or the nearest service center.
Alarm functions
Appears
alternately with the
liquid temperature
