Fault Repair; Weighing Module Not Registering; Dashes Instead Of Kg-Value; Deviating Test Results - Miele PW 6 7 Series Technical Information

Technical Information
Term/Concept
Force shunt
Important for yearly maintenance: The customer will not notice when one
or two (less than three) loading cells have failed. Therefore, accurate testing
of the weighing system should be integrated into yearly maintenance and/or
service work. Each individual loading cell should be checked using a control
weight.
Overloading: The weighing system currently will not display weights greater
than 40kg. If the machine is overloaded, it cannot be determined by how
much.
3

Fault Repair

3.1

Weighing Module Not Registering

Symptom:
System settings: Weighing module not registering even though it is installed.
Cause:
Wiring harness from weighing module to SLT is defective or not connected.
Weighing module unavailable.
Remedy:
Check wiring harness and plugs. Replace the weighing module if defective or
re-install it.
3.2

Dashes Instead of kg-Value

Symptom:
Dashes are displayed instead of a kg-value during the wash program.
Cause:
Weighing system was tared, but the control electronic has lost the connection
to the weighing module. A system fault will be displayed. At least three
loading cells have failed.
Remedy:
Weighing results are negative; tare the machine again with an empty drum.
Check wiring harness and plugs. Identify and replace defective loading cells.
3.3

Deviating Test Results

Symptom:
Weighing-test results deviate greatly after taring or after calibration.
Cause:
Weighing module is defective. Shipping struts are still installed. Between the
Explanation
There is a mechanical connection between the oscillating
component and the weighing stand, where weighing results will be
inaccurate or weighing not possible. Onsite-connected or installed
extras will distort the weighing results.
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PW 6xx7