Rational iCombi Classic Troubleshooting

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

Rational iCombi Classic Specifications

General

Model	iCombi Classic
Material	Stainless steel
Cooking Modes	Convection, Steam
Temperature Range	30°C to 300°C
Capacity	10, 20
Power Supply	400V 3-phase
Power Consumption	Varies by model
Dimensions	Varies by model
Weight	Varies by model
Cooking Levels	10, 20, or 40