Diagnosing Failure 21
4. Check the output relay that
powers the water inlet valve.
If the relay stays closed and
the relay is broken, replace the
wash computer.
Table 69
Failure 24: Defective Level Sensor
If the level sensor is broken then fault 24 will be displayed. The
fault is only generated when the machine is in standby mode and
no wash cycle is running. The fault can only be erased by switch-
ing off and on the power.
Diagnosing Failure 24
1. Check the level sensor visu-
ally.
If you see some damage: re-
place the wash computer.
2. If the fault is persistent.
Replace the wash computer.
(Be sure there is no drain prob-
lem).
Table 70
Failure 25: Defective Temperature Sensor
When the temperature sensor is broken then fault 25 will be dis-
played. The fault is only generated when the machine is in stand-
by mode and no wash cycle is running. The fault can only be
erased by switching off and on the power. If the fault is still avail-
able after switching on the power : fault 25 will be displayed
again.
Diagnosing Failure 25
1. Check if the temperature
sensor is connected on the
PCB Board.
The Female connector must be
connected with the Male con-
nector T of the PCB board.
2. Check the temperature sen-
sor.
If the temperature sensor is
broken: replace the tempera-
ture sensor.
3. Measure the resistance of
the sensor.
If the resistance is not OK: re-
place the temperature sensor.
4. Check if the earth wire is at
the middle position of the con-
nector.
If the earth wire is not at the
middle position: put the earth
wire in the middle position of
connector T.
5. Check the PCB board visu-
ally.
If you see some damage : re-
place the wash computer.
Table 71
continues...
Diagnosing Failure 25
6. If the fault is persistent.
Replace the wash computer.
Be sure that the problem is re-
lated to the PCB board and not
to a defective temperature sen-
sor.
Table 71
Failure 26: Undefined Mitsubishi Frequency
Inverter Error Code
Occurs if the inverter gives an error message which is not recog-
nised by the wash computer.
Failure 27: Communication Fault Inverter
This fault will only occur when there is no communication be-
tween the wash computer and the inverter. The wash computer is
sending requests to the inverter, and the inverter is sending an-
swers to the wash computer. If the wash computer is not receiv-
ing the answers within 5 seconds then fault 27 will be displayed.
On machines with a backup UPS this error will also be shown in
case of power supply interruption.
Diagnosing Failure 27
1. For a new inverter or wash
computer :
Check if the right machine
type and Washing machine
power supply have been se-
lected.
When the Inverter parameters
are loaded at the Configura-
tion menu, make sure that
you have selected the right
machine type and washing
machine power supply.
2. Check if the door is closed
and locked.
If the door is not closed then
the inverter can not be pow-
ered. Close the door.
If the door lock is broken, re-
pair the door lock system.
3. Check if the inverter is ener-
gized. If the inverter power
LED is not illuminated, meas-
ure if there is supply voltage at
the inverter input terminals.
Repair the power supply.
If the supply voltage is OK
and the power LED is not il-
luminated, replace the inver-
ter.
4. Check if the fuses are still
operational.
If the fuses are blown up : re-
place the fuses.
5. Check if the safety inverter
contactor is activated.
If the safety contactor is bro-
ken: replace the contactor.
Table 72
continues...
Troubleshooting
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94
Part No. D1631ENR7
Summary of Contents for IYG065J
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