Chapter 6 Control system diagram
SMSO-2-02.06- 15.07.03 215
6.5.27 Level probe – “steam”
Operating conditions
With sufficient water in the steam generator a signal is sent to the unit control system.
Symptoms
“Level probe steam” message displays.
Procedure
NOTE: It is not possible to obtain any meaningful measurements on the level probe with a multimeter either in normal
operation or in the case of a fault.
Process
step
Check Possible cause Remedy
1
Pull out the level probe plug and
hold against the steam generator.
The following must occur:
the pump must switch off
The feed valve must close
(audible click!)
Voltage supply failure / faulty
Faulty unit control system
Plug contacts on power PCB
faulty / oxidised
Cable broken or pulled out of plug
Flat plug not correctly connected
Replace the power PCB
Replace unit control system
Check / replace plug contacts
Replace cable
Re-connect the flat plug on the
plug-in contact stud
Is the water tap open / can water
flow through?
Water tap closed
Calcium deposit; too little water
Open the water tap
Check or replace the level probe
(note the correct length!)
ES
NO
NO
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