Rational iCombi Pro Troubleshooting Manual page 34

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 Repeat the voltage measurement
Replace the
cable) and neutral. No on the contact X19 on the I/O Is 230 V measured here? No
I/O board.
board.
Is this the case?
Yes
Yes
Check the cable connection and
End
replace if necessary.
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
Service error: 42.4 2