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8. When a trouble occurs
Safety unit and error indications
The table shows possible causes of activation of the safety unit and solutions.
[Error indication]
When an abnormality occurs to the inlet temperature controller or the outlet temperature controller, the
touch panel at the operation panel displays the error screen. When an abnormality occurred, confirm
description of the error and implement appropriate solutions.
Display
Possible causes
Solutions
①
Disconnection
of
the
thermocouple sensor
②
When
the
displayed
inlet
temperature is at 230
℃
or over
③
Malfunction of the blower
①
Replacement
of
the
thermocouple sensor
②
Lower the set temperature or
adjust air amount.
③
Replacement of the part
①
Disconnection
of
the
thermocouple sensor
②
When
the
displayed
outlet
temperature is at 110
℃
or over
③
Malfunction of the blower or
inverter
①
The nozzle detached while spray
was in operation.
②
Disconnection of the limit switch
for detecting a spray nozzle
①
Install a spray nozzle.
②
Replace
①
When the measured cooling trap
temperature becomes 40
℃
or
more.
②
Imperfect
connection
or
disconnection of the temperature
sensor.
③
Malfunction of the display monitor
(temperature controller)
④
Malfunction of the freezer or the
inverter
①
Possible causes include clogging
of the freezer filter, high room
temperature, or large circulating
air amount. Implement solutions
appropriate for the symptom.
②
Repair or replace
③
Replace
④
Replace
①
While oxygen concentration in the
pipe path becomes 5
％
or more
during heating.
②
Imperfect
connection
or
disconnection of the oxygen
sensor
③
Malfunction of the oxygen sensor
substrate
①
Isolate the cause of the leak and
repair or replace the defective
part.
②
Repair or replace
③
Replace
①
Imperfect
connection
or
disconnection of the oxygen
sensor
②
Malfunction of the oxygen sensor
substrate
①
Repair or replace
②
Replace
①
When leak of a flammable gas is
detected in the piping path in the
unit.
①
Assure
sufficient
ventilation
around the unit, inspect for the
cause of the leak, and repair or
replace the defective part.
Improper
nozzle
attachment
Spray Inlet
Temperature
Outlet
Temperature
Abnormal
trap
temperature
Oxygen concentration
high
Malfunction of the
oxygen sensor
Flammable gas
detection
ESC
ESC
ESC
ESC
ESC
ESC
ESC
