Rational Combi Master, Training Manual

Page: 159 / 200

159
Trouble shooting SCC
Edition 10-2008a
Service 34 (BUS)
Bus failure - Indication of the faulty knot with the following code (combination of
different faults possible):
- 1: I/O pcb
- 2: Bottom motor
- 4: Top motor
- 8: Top ignition box
- 16: Bottom ignition box
Indication Service 34.1 up to 34.31
Disconnect and reconnect bus
cable of the indicated faulty part.
YES
Is Service 34.1 indica-
ted and the yellow LED on
the I/O pcb is ashing?
Check I/O pcb.
Change it if necessary
Change corresponding part
NO
Are all dip switches „off“?
Set dip switches to off
and disconnect unit from mains.
Switching unit off and on is not
enough
Failure eliminated? Carry out test run
Carry out test run
Change bus cable
Failure eliminated?
NO
YES
NO
YES NO
YES
NO
Service 32 (only gas unit)
Internal fault of ignition box
Service 32.1 Table models and oor models upper box
Service 32.2 Floor models lower box
Indication Service 32.1 or 32.2
Switch unit off and on again
YES
Is unit working again?
Change corresponding
ignition box
Carry out test run
If the unit was switched off and on
again 3 times and the ignition box
did not reset, then „No Function“
is shown
NO