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40
8. In the Event of Failure…
Trouble Shooting
Problem
Possible Cause
Solution
Indication on the
oxygen
concentration
display monitor does
not change.
Flow meter for the oxygen
sensor is clogged
Pump is defective
Filter for the oxygen sensor is
deteriorated or clogged
Defect of the oxygen sensor
Oxygen sensor substrate is
defective
Replace the flow meter
Replace
Replace the filter
Replace
Replace
The value of oxygen
concentration
monitor
cannot
recover beyond 18%
after operation
Influenced by active carbon
filter, the internal air oxygen
concentration cannot recover to
atmosphere
oxygen
concentration
Flowmeter of oxygen sensor is
blocked
Pump failure
Filter degraded or blocking
Oxygen sensor failure
Oxygen sensor board failure
Use gas pipe switching valve,
connect the test port of oxygen
concentration
meter
to
atmosphere directly. See P.40
picture.
Replace the flowmeter
Replace
Replace the filter
Replace
Replace
Thermo
regulator
failure
Defective display function
Sensor failure
Maintain or replace the part.
Replace the part.
Blower adjusting dial
is defective.
Adjusting circuit failure and
wiring failure
Lack of capacity of heater due to
excessive circulating airflow
The adjusting dial for ADL311S
or GB210A is being used
Maintain the part or replace the
thermo regulator.
No error.
For operating this unit with high
temperature, decrease the flow
rate of the circulating air or
increase the setting value
When the unit is connected to
GAS410, operate the dial on the
GAS410 side.
(
Dial for ADL311S or GB210A is
disabled.
)
◆
In the case if the error other than listed above occurred, turn off the power switch and
primary power source immediately. Contact the shop of your purchase or nearest
Yamato Scientific Service Office.