222 Troubleshooting guide Manual Power Quality Filter PQFM
when the filter is
running.
distortion is in antiphase
with the load distortion.
Check the background distortion.
The filter is in an incorrect
state.
Stop the filter and reset it by
switching off and on the power.
If the problems persist, contact your ABB service provider. Provide him with all the relevant
information, i.e. filter serial number and type, status of the control LEDs, error messages
displayed and filter behavior.
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