Alarm features
8
Alarm name
Alarm display and operation
Cause
Operation conditions
・
Temperature sensor is disconnected or
short-circuited.
Sensor alarm
・
Alarm is displayed
・
Alarm LED illuminates
・
The control is stopped and the
circulation pump stops.
℃
Alarm
Pump
PV
LED ON
Refrigeration unit
alarm
・
Alarm message blinks.
・
Alarm LED illuminates
・
The control is stopped and the
circulation pump stops.
℃
Pump
PV
Blinks
Operation conditions
・
Refrigeration unit high pressure switch
works or the refrigeration unit overload relay
works.
Canceling the alarm
・
The alarm can be canceled with the [Set]} key
when the refrigerator high-pressure switch
or the refrigerator overload relay is reset.
℃
Pump
PV
Alternate display
of the alarm and the
measured temperature
Temperature
upper
limit alarm
・
Alternate display of the alarm and the
measured temperature
・
Alarm LED illuminates
・
The control is stopped and the
circulation pump stops.
Operation conditions
・
The temperature around the sensor exceeds
the upper limit.
Canceling the alarm
・
Alarm can be cancelled by pressing the Set
key with the measured temperature lower
than the set upper limit.
※
Default upper limit
：＋
80
℃
※
The user can change the set upper limit.
(Refer to P.19, 5-3. Operation of the
User Set Mode.)
℃
Pump
PV
Alternate display
of the alarm and the
measured temperature
Temperature
lower
limit alarm
・
Alternate display of the alarm and the
measured temperature
・
Alarm LED illuminates
・
The control is stopped and the
circulation pump stops.
Operation conditions
・
The temperature around the sensor exceeds
the lower limit.
Canceling the alarm
・
Alarm can be cancelled by pressing the Set
key with the measured temperature higher
than the set lower limit.
※
Default upper limit
：
-50
℃
※
The user can change the set lower limit.
(Refer to P.19, 5-3. Operation of the User
Set Mode.)
Alarm for recovery
from power failure
・
Alternate display of the alarm and the
measured temperature
・
Alarm LED illuminates
・
Power failure recovery function
ON … Recovery to the state
immediately before Power OFF
Power failure recover function
OFF…Control, pump circulation OFF
℃
Pump
PV
Operation conditions
・
During the temperature control operation
with setting Power Failure Recovery function,
[On] or [OFF], the power was off and switched
on.
Canceling the alarm
・
The alarm can be canceled with the [Set] key.
※
The user can change the ON/OFF
selection of power failure recovery
function.
(Refer to the user set mode operation
method of P.19. , 5-3. Operation of the
User Set Mode.)
Alarm
Alarm
Alarm
Alarm
Alternate display
of the alarm and the
measured temperature
