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B7S B7SLED WASHING MACHINE SERVICE HAND BOOK
75
Is there E3 error?
Replace control card.
No
Replace the heater
No
Yes
Yes
Does the heater operate
although there is no
water?
Yes
Open the rear cover of the
machine. Measure heater
resistance by removing at least
one of the heater terminals; is the
resistance 25 Ohms? (Picture
E2-4)
PICTURE E2-4: One of the cables on the
heater is removed (left) and heater resistance
is measured.
PICTURE E2-1: Heater socket on the KN5
card
Important Note:
The washing machine makes cold washing
and ends the program before the heater is
activated in NTC open circuit / short circuit
and Heater open circuit conditions, i.e. if
there is E1, E2 or E3 error.
* Heater
continuously
active error
E3
0
0
0
1
1
Machine is boiling
the water.
Laundry comes
out very hot; they
are worn.
Check to see if there is any short
circuit between the first pins of
both connectors.
(Picture E2-3)
Remove the panel for a
comfortable measuring.
Remove KN5 (Picture E2-1)
Heater socket and KN8
(Picture E2-2) Tacho socket.
PICTURE E2-2: KN8 tacho socket is removed.
Check water level sensor.
Measure the frequency
between pins 1 and 3 while
the machine is empty and
energized. It should be
around 25560 Hertz. (Picture
2-5)
PICTURE E2-5: Water level sensor is being
checked
PICTURE E2-3: Short circuit check is being
made between KN8-1 pin and KN5-1 pin.
Summary of Contents for B7S-B7SLED
Page 90: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 90 ...
Page 91: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 91 12 POWER CIRCUIT DIAGRAM ...
Page 92: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 92 ...
Page 93: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 93 ...
Page 94: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 94 ...
Page 96: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 96 13 3 Water System 13 4 Visual Group ...
Page 97: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 97 13 5 Visual Group 13 6 Front Wall Group ...
Page 98: ...B7S B7SLED WASHING MACHINE SERVICE HAND BOOK 98 13 7 Front door 13 8 Driving Group ...