Rational iCombi Pro Troubleshooting Manual page 7

Error tree: CDS sensor not emitting a signal
Service error: 12
Unit type: iCombi
Check the connector on the solenoid valve block and
I/O board, check the CDS sensor signal in the
diagnostic program (pulse counter)
Service error: 12
Is the water pressure on the hand
Yes
shower OK?
Is the pulse quantity
1360 pulses for iCP
1360 pulses for iCC,
1000 pulses for XS?
No
Replace the solenoid valve block
Art. 50.02.012 (5x solenoid valve block for iCombi Pro 20 1/1, 20 2/1
Art. 50.02.054 (5x solenoid valve block for iCombi Pro 6 1/1 - 10 2/1
Art. 50.02.102 (3x solenoid valve block + Care for iCombi Classic 6 1/1 - 10 2/1
Art. 50.02.103 (2x solenoid valve block for iCombi Classic 6 1/1 - 10 2/1
Art. 50.02.104 (3x solenoid valve block + Care for iCombi Classic 20 1/1 - 20 2/1
Art. 50.02.105 (2x solenoid valve block for iCombi Classic 20 1/1 - 20 2/1
If an error 42.1 - 4 was also triggered, reset the error via Cleanjet module test.
No
1
Open the tap, clean the dirt filter in the
water inlet
V03 · 05/2021 · RTS/Shof · en-GB