Electrolux w4250n-s User Manual
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6665
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1
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K21
6664
K21
K22
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5
5
Heating
Function
Electric heating with fusible cut-out on element
The three heating elements in the machine are
connected to separate phases and are switched
on and off using one or two heating contactorrs,
K21 och K22 (two contactors are used for higher
heating power). The heating contactors are con-
trolled by the programme unit A1, output (X36:7).
The programme unit receives information on the
water temperature in the machine through an
analogue signal from the temperature sensor
situated in the outer drum. The programme unit
controls the heating contactors to achieve the
set water temperature for the current washing
programme.
When there is no water in the drum, the pro-
gramme unit prevents switch-on of the heating
elements. If an error would nevertheless cause
the elements to switch on, a slow-blow fuse trig-
gers to switch them off again. Then the heating
elements has to be changed.
connected to separate phases and are switched
on and off using one or two heating contactorrs,
K21 och K22 (two contactors are used for higher
heating power). The heating contactors are con-
trolled by the programme unit A1, output (X36:7).
The programme unit receives information on the
water temperature in the machine through an
analogue signal from the temperature sensor
situated in the outer drum. The programme unit
controls the heating contactors to achieve the
set water temperature for the current washing
programme.
When there is no water in the drum, the pro-
gramme unit prevents switch-on of the heating
elements. If an error would nevertheless cause
the elements to switch on, a slow-blow fuse trig-
gers to switch them off again. Then the heating
elements has to be changed.
1. Heating elements
2. Programme unit A1
3. Voltage supply
4. Temperature sensor
5. I/O-card
2. Programme unit A1
3. Voltage supply
4. Temperature sensor
5. I/O-card
2