
B-70315EN/02 5.TROUBLESHOOTING
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ALM No.4105
TURBO TEMP. 1
This alarm is issued, if the temperature of the turbo blower motor
winding becomes higher than the permissible level.
Alarm output condition
This alarm is issued if the turbo temperature signal becomes "0" after
the start of the oscillator and immediately before the completion of
purging.
Related data
DGN.962#0 *IAL1 Inverter alarm
No. Cause of trouble Solution
1 Cooling water temperature
high
Set the temperature of the cooling water
to within an appropriate range (20 to
30
°C).
2 Insufficient cooling water The amount of cooling water supplied to
the turbo blower may be insufficient.
Check whether the cooling water tube
between the water distributor unit and
turbo blower is twisted or clogged. If the
tube is twisted or clogged, replace the
tube.
If a tube in the turbo blower is clogged,
clean the tube.
3 Anomaly of temperature
sensor
If the sensor is abnormal, replace the
turbo blower because the sensor is built
into the winding in the turbo blower.
4 Anomaly of cable connection Check whether the cable is securely
connected to the turbo PCB. If not,
reattach the cable.
ALM No.4106
BLOWER OIL SHORTAGE
This alarm is issued if the signal from the turbo blower oil sensor
indicates that the oil level has fallen below the setting or if the
temperature of the oil has risen.
Alarm output condition
This alarm is issued if the turbo blower oil signal becomes "0" after the
start of the oscillator and immediately before the completion of purging.
Related parameters
DGN.962#2 *L-V Turbo blower oil
No. Cause of
trouble
Solution
1 The oil level is
lower than
specified.
Replenish the turbo blower with oil until the oil level on
the oil gauge is between H and L.
2 Invalid alarm
level setting
Set the sensor correctly as explained in Subsection
7.6.3.
3 Sensor
abnormal
Replace the turbo blower.