Chapter 4 Fault diagnosis
SMSO-2-02.04- 15.07.03
User panel
Buttons jam / foreign bodies caught in the panel
The keyboard PCB is damp
Steam discharge valve Valve seat clogged and not water-tight (calcium)
Faulty coil
Faulty seal on closing element
Steam generator
Calcium on heating
Faulty heating
Temperature sensor defective / calcified
Level probe: calcified
Heat damage caused by over-heating
Safety thermostat
Triggered as a result of over-temperature
Faulty / faulty contacts
Non-return valve
Calcium / not water-tight
Steam outlet operation Outlet nozzle clogged
Motor
Faulty capacitor
Faulty RC module
Control set
O-ring defective
Too much / not enough grease
Rotary-vane type pump Clogged (calcium)
Worn out (dry running)
Faulty bearing (noisy)
Power PCB / unit control system /
Power relay
Faulty fuses
Faulty relay or power transistor
Faulty EEPROM
Faulty power relay
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