Rational iCombi Pro Troubleshooting Manual page 28

1
Disconnect the connector on the solenoid valve block and check
the input voltage with a multimeter on the contact of the yellow
cable.
If Y1 is
"On",
the value measured between the contact (yellow
Repeat the voltage Is the required value
cable)
No measurement on the contact measured here (e.g. No Replace the I/O board.
and neutral much match the specifications (e.g.
X19 on the I/O board. Germany: 230 V)?
Germany: 230 V).
Is this the case?
Yes
Yes
Check the cable connection and replace if
End
necessary.
Problem solved? Yes End
No
Replace the solenoid valve block.
End
Service error: 42.1 2