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Here, you'll get support for your VLT® HVAC Drive FC 102.
VLT® HVAC Drive FC 102
Intermittent display
The display is either on or off when it is not supposed to.
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If the display stays lit, the problem is in the control wiring. Check the wiring for shorts or incorrect connections
Test:
To rule out a problem in the control wiring,
disconnect all control wiring by removing the
terminal blocks.
Possible cause/s:
Internal voltage supply fault or SMPS is defective
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