Rational iCombi Pro Troubleshooting Manual page 25

Error tree:
Care pump does not pump enough care solution into the steam generator
Service error: 40
Unit type: iCombi Pro
The care pump can be controlled in the functional test
Check voltage 100V at X3 pump board to care pump. Is the pump
connector connected to the circuit board and pump?
Service error: 40
Care pump does not pump enough care solution into the steam generator;
(CDS sensor detects that the subsequent filling volume is too high due to Y1 up to the level electrode)
Is the water connection ok?
Yes
No
YES
Replace care pump
Yes
Reset faults by successfully running the rinsing programme.
Reset errors with Start: Functional test CleanJet in Service Mode
Display Service 40
Check water filter, pressure and hoses
No
- Hose kinked/blocked at the pump outlet or pump blocked
- Foreign body blocked connecting piece of the care container to the
pump.
Yes
- Connection hose CWB to steam generator blocked
- Connection supports SCP to steam generator blocked
No
Check plug and cable or replace the circuit board
Check auxiliary contact K1
1
Logic errors
No
Voltage supply over
V03 · 04/2021 · RTS/Awei · en-GB