F 53 Speed Meter (Tachogenerator) - Miele W 4840 Descriptive Technical Documentation

070-30
3.31

F 53 Speed meter (tachogenerator)

Symptom
In the operating mode the display indicates: Technical fault.
The LED Soak flashes rapidly.
The drum or the drive are blocked, the drive does not start or is switched off after
1.5 seconds.
This incident is repeated during two reverse tumble cycles.
In the program cycle spin there is an immediate stop.
It is possible that after a cooldown phase, the drive works again on and off.
The program is stopped, the water intake valve is closed, and the drain pump is
switched on for 120 seconds.
Cause
The tachogenerator is defective.
The power electronic (ELP) does not receive any usable alternating signal from
the tachogenerator.
Check the tachogenerator
A Check the tachogenerator, refer to Drum drive defective, 060 3.1.
Cause
Defective drive.
The power electronic (ELP), via the tachogenerator, detects a significant
difference in the spin speed between the target number and the actual number.
Remedy
A Check the drive, refer to Drum drive defective, 060 3.1.
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Descriptive Technical Documentation
DTD no. 11-4800
22.12.2006, US_am