Alarm
HEC002-A/HEC006-A 9-3
Condition : Switching power supply has a problem (The fan stops and
temperature is excessively high.) or Thermo-module is short
circuited.
After alarm occurrence : The product (temp. control, pump, fan) stops.
Indication : [DC Power Voltage Failure]
Condition : Fluid temp. goes higher than high temp. cutoff setting.
Default : 70.0 C
After alarm occurrence : The product (temp. control, pump, fan) stops.
Indication : [Internal Sensor Value is High]
Condition : Fluid temp. becomes lower than low temp. cutoff setting.
Default : 0.0 C
After alarm occurrence : The product (temp. control, pump, fan) stops.
Indication : [Internal Sensor Value is Low]
Condition : The thermostat is operated due to clogging of the filter or
breakdown of fan or pump, etc.
Thermostat working temp. : 60±5 C (heat sink)
80±5 C (at circulating fluid side)
After alarm occurrence : The product (temp. control, pump, fan) stops.
Indication : [Thermostat Alarm]
Condition : Temperature change is less than overload judging temp. range
even by 100% output for overload judging time period due to
application of unacceptable heat load or broken wire of Thermo-
module.
Default : 0.2 C 10min
After alarm occurrence : The product continues controlling except that output
failure alarm is shown.
Indication : [Output Failure Alarm]
Low circulating
flow rate
(Option)
Condition : The flow rate of the circulating fluid is low..
Set flow rate: 0.7L/min
After alarm occurrence : The product (temp. control, pump, fan) stop.
Indication : [Flow Alarm]
Breakage of
internal temp.
sensor
Condition : The internal temp. sensor is broken or disconnected.
After alarm occurrence : The product (temp. control, pump, fan) stop.
Indication : [Cutoff/Short of Internal Sensor]
Disconnection of
external temp.
sensor
Condition: The external temp. sensor is disconnected or not mounted. (This
condition is detected only in learning control or external tune
control.)
After alarm occurrence : The product continues controlling.
Indication : [Cutoff/Short of External Sensor]
Condition : The auto tuning could not finish within 20min.
After alarm occurrence : The product ( temp. control, pump, fan) stop.
Indication : [AT Failure]
Condition : The level of circulating fluid in the reservoir is low.
After alarm occurrence : The product (temp. control, pump, fan) stop.
Indication : [Low Fluid Level Alarm]