Primus XCONTROL PLUS Original Programming Manual page 88

FAILURE 25: DEFECTIVE TEMPERATURE SENSOR
When the temperature sensor is broken then fault 25 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 switching off and on the power. If the fault is still available after switching on
the power : fault 25 will be displayed again.
DIAGNOSE:
1. Check if the temperature sensor is
connected on the PCB Board.
2. Check the temperature sensor.
3. Measure the resistance of the sensor.
4. Check if the earth wire is at the middle
position of the connector.
5. Check the PCB board visually.
6. If the fault is persistent.
FAILURE 26: UNDEFINED MITSUBISHI FREQUENCY INVERTER ERROR CODE
Occurs if the inverter gives an error message which is not recognised by the wash computer.
FAILURE 27: COMMUNICATION FAULT INVERTER
This fault will only occur when there is no communication between the wash computer and the inverter.
The wash computer is sending requests to the inverter, and the inverter is sending answers to the wash
computer. If the wash computer is not receiving the answers within 5 seconds then fault 27 will be displayed.
DIAGNOSE:
1.For a new inverter or wash computer :
Check if the right machine type and Washing
machine power supply have been selected.
2. Check if the door is closed and locked.
3. Check if the inverter is energized.
If the inverter power LED is not illuminated,
measure if there is supply voltage at the
inverter input terminals.
4. Check if the fuses are still operational.
5. Check if the safety inverter contactor is activated.
6. Check if the connectors on both sides of the
communication cable are still connected.
7. Check the wiring for continuity.
8. Check if the output relays that activates the
safety inverter contactor is functional.
88
The Female connector must be connected with the
Male connector T of the PCB board.
If the temperature sensor is broken: replace the
temperature sensor.
If the resistance is not OK: replace the temperature
sensor.
If the earth wire is not at the middle position: put the
earth wire in the middle position of connector T.
If you see some damage : replace the wash computer.
Replace the wash computer.
Be sure that the problem is related to the PCB board
and not to a defective temperature sensor.
When the Inverter parameters are loaded at the
Configuration menu, make sure that you have selected
the right machine type and washing machine power supply.
If the door is not closed then the inverter can not be
powered. Close the door.
If the door lock is broken, repair the door lock system.
Repair the power supply.
If the supply voltage is OK and the power LED is not
illuminated, replace the inverter.
If the fuses are blown up : replace the fuses.
If the safety contactor is broken: replace the contactor.
Connect the connectors on the wash computer and
the inverter.
Repair the wiring.
If the relay is broken, replace the wash computer.
PROGRAMMING MANUAL 540876_A_PUB_DATE_1_FEB_2012.DOC