Fault Code F88: Turbidity Sensor Fault; Fault Code F91: Load Size Registration Inactive - Miele G 4205 Technical Information

G 5xxx
Magnet missing.
Remedy:
Replace the salt container lid.
Cause:
Reed switch magnet defective.
Remedy:
Replace the reed switch magnet.
3.39

Fault Code F88: Turbidity Sensor Fault

If this fault is registered, the program is not interrupted. The fault will only be
indicated when the fault memory is checked in the service mode.
If this fault is registered, the program continues with default settings.
Cause:
False or no values from turbidity sensor.
Remedy:
1. Check the turbidity sensor for correct function.
2. Replace the top spray arm feed pipe with turbidity sensor, if necessary.
See Section 050-4.4.
Cause:
Foreign objects in the measurement path.
Remedy:
Check for foreign objects in the measurement path. Remove blockage or
replace feed pipe (Section 050-4.4) if necessary.
Cause:
Turbidity sensor connection wires open-circuited.
Remedy:
Check connections to electronic board and turbidity sensor B3/10 and
perform a continuity check.
3.40

Fault Code F91: Load Size Registration Inactive

Symptom:
If this fault is registered, the program is not interrupted. The fault will only be
indicated when the fault code memory is checked in the service mode.
Background information: If this fault is registered, the water intake block
will operate by taking in the default water quantity. In the subsequent
additional fill, the quantity of which will normally depend on the size of the
load, the water intake block is replaced by a water intake block with fixed
water quantity.
Cause:
Water has collected in tipped-over dishes. Subsequent water fill is not successful.
Remedy:
Place dishes in the machine with care.
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Technical Information