Rational iCombi Classic

2
Service error: 42.4
1
Disconnect the connector on the solenoid valve block and check the input
voltage with a multimeter on the contact of the black cable.
If Y4 is on "On",
230 V must be measured between the contact (black
cable) and neutral.
Is this the case?
Repeat the voltage measurement
on the contact X19 on the I/O
board.
No Is 230 V measured here?
Replace the
I/O board.
Check the cable connection and
replace if necessary.
End
Check the hose running from the solenoid valve Y3 to the
moistening nozzle for blockage and remove if necessary.
Replace the solenoid valve block.
End
Yes
No
Yes