Electrolux T5675 Service Manual page 160

160
40:21 I/O COMMUNICATION
Only on Barrier washer.
The error code is activated if the control system no longer can communicate with Barrier I/O unit or
if the communication is intermittent. I/O unit designation that is shown in the error description is
according to electric schematics and electrical component list.
Barrier I/O board is connected to M-COM port on CPU in paralell with the MCU for drum. Electrical
interface is RS-485. The error code is shown if the control system has lost or only have intermittent
communication with the I/O unit.
Possible causes:
• Bad contact in harness or connectors between CPU/MCU and I/O unit.
• The I/O board is incorrectly configured on DIP switches (SW210 and SW202)
Recommended actions:
1. Check wiring, connections configuration of I/O unit according to service manual.
40:22 I/O BOARD MISHMASH
The error code is shown if wrong Type of I/O unit is fitted.
Could also occur if adressessing of the I/O units is made in a incorrect way.
After addressing of I/O units the CPU reads the Type of each unit.
If there is a mismatch between what the Type of I/O unit the CPU finds, and what the I/O unit type
the software configuration expects, the error will be shown.
Machine will not run until problem is solved. There are two exceptions: I/O type 1 can be used
when I/O type 11 is expected, but not oposite. I/O type 8 can be used when I/O type 81 is expected,
but not oposite.
Possible causes:
• When adressing the I/O units the operator has pressed a the button on the wrong I/O unit.
• Wrong type of I/O unit if fitted in the machine.
• Two I/O units have got the same adress.
Recommended actions:
1. Readdress all I/O units.
Use I/O CONFIGURATION function in service mode.
Alternatively use Common Service Tool, I/O addressing function.
2. Use the electric schematic to find correct I/O board to address.
3. Use Common Service Tool, I/O addressing function to get best overview/visualization of the
problem.
Troubleshooting