Siemens EH675TK11E Repair Instruction page 42

This module has its own power supply unit.
 Wake-up module
This module is connected to the system via the LIN bus.
If an error occurs, this board short-circuits the LIN grounding wire.
In this way all modules connected to this line switch to security
error mode and stop the normal function mode.
The energy (9.6 V) is supplied by the power supply unit of the
oven via the switch control module.
The LIN Bus communication is only short-circuited if a power loss
fault occurs.
Standby state
The Wake-up module discovers that all circuits are in the zero
position.
It manages data exchange of the bus communication line.
It starts transmitting a Wake-up signal to the communication
line, the TouchControl and the power module if a circuit is
outside the zero position and switches to the Wake-up status.
3.11.2 Description of possible error messages
 F0 (flashes alternately)
 F0F0 (does not flash)
 FFFF0000 (continuously flashes alternately)
206_58300000141095_ara_en_k.doc – 04.10.a
3.11.2.1 Cause: F0 (flashes alternately)
The TouchControl does not find the circuits. Receives reply from the
ELIN and is OK.
Solution:
 Check polybox connections. See chapter 5 of the Repair manual.
 If the connections are correct, replace power supply unit for
the oven.
3.11.2.2 Cause: F0 F0 (does not flash)
The oven circuits are not in the zero position.
Solution:
 Set circuits to zero position.
3.11.2.3 Cause: FFFF0000 (flashes alternately)
When the induction board is connected to the oven, the latter
occupies the communication line and prevents
1 – circuit detection
2 – the TC from communicating with the induction modules
Solution:
 Check polybox connections. See chapter 5 of the Repair manual.
 Replace power supply module for the oven.
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