Electrolux WTCS90ERB - Page 79

DOC. NO. 5956.573.05 P. 7 9 / 8 8
Electrolux
EFS - Dishwashing Systems Platform
Electrolux Professional
27 The gear motor inverter has
generated an allarm.(compact
machines only).
- The inverter or the gear motor
doesn’t work properly. Possible
machine alarms documented on
Possible cause Remedy
1)  overcurrent - ramp too short
- inertia or load too high
- mechanical locking
- check the state of the
mechanism.
2)  motor short circuit - insulation fault or short-
circuit at the drive output
- check the cables
connecting the drive to
the motor , and the motor
insulation.
3)  internal fault - internal fault - check the environment
(electromagnetic
compatibility).
- send the drive to be
checked/repaired.
4)  configuration fault - The current configuration is
inconsistent
- some parameters in the
inverter have been modified
- return to factory settings.
5)  overspeed - instability or
- driving load too high
- some parameters in the
inverter have been modified
- return to factory settings.
6)  internal fault - load relay control fault or
damaged load resistor
- replace the drive.
7)  drive overload - drive temperature too high - check the motor load
and the enviroment.Wait
for the drive to cool down
before restarting.
8)  motor overload - triggered by motor current
too high
- check the motor load.
Wait for the drive to cool
down before restarting.
9)  overvoltage - line voltage too high
- disturbed line supply
- check the line voltage.
The overvoltage thresold
is 415 V on the DC bus.
10)  overvoltage during
deceleration
- braking too sudden or
driving load.
- increase the
deceleration time.
11)  line phase failure - drive incorrectly supplied or
a fuse blown
- failure of one phase
- unbalanced load
- check the power
connection and the fuses.
- reset.
12)  undervoltage - line supply too low
- transient voltage dip
- damaged load resistor
- check the voltage and
the voltage parameter.
The undervoltage
threshold is 230 V on the
DC bus.
- replace the drive.
30
**
The Air gap was not completely
emptied within the max. emptying
time.
- The impeller rotation is wrong.
- The non return valve on the air gap doesn’t work properly.
- The pressure sensor on the air gap doesn’t work properly.
- The air gap air trap is not clean.
31 The wash tank was not completely
filled within the max. filling time.
- The wash tank water supply cock is not open.
- The water load solenoid valve doesn’t work properly.
- The water feed flow is too low.
- The water inlet filter is not clean.
- The pressure sensor on the wash tank doesn’t work properly.
- The wash tank overflow has not been inserted.
- The wash tank drain solenoid valve doesn’t work properly and remains open.
- The pressure sensor on the wash board doesn’t work properly.
- The wash board doesn’t work properly.
32 The pressure sensor on the wash
tank does not work correctly.
- The pressure sensor on the wash board doesn’t work properly.
- The wash board doesn’t work properly.
33
**
The required temperature in the
wash tank was not reached within
the max. heating time.
- A heating element or a heating element branch of the wash board doesn’t work properly.
- The wash tank temperature sensor doesn’t work properly.
- The wash tank heating element starter controller doesn’t work properly or its coil is not correctly
connected to the rinse board.