2012 2039 28 122
Fault tracing on Q-Control
Main Power supply
voltage too low or
missing links in the
control panel.
- Check if main supply voltage is
within specs. Check Main fuses.
- Check for loose connectors at the
control unit of the inverter and Q
Control.
- Check for tripped fuses at the
secondary of the transformer in
the electrical panel
Overcurrent detected
at motor side
- Check if main supply voltage is
within specs.
Short Circuit detected
in U phase
Short Circuit detected
in V phase
- If error returns, contact service
Short Circuit detected
in W phase
- Check if main supply voltage is
within specs. Check Main fuses.
Main Power supply
voltage too low.
Maximum allowable
voltage of the DC-link
exceeded; Threshold
is lowered in case of
higher temperature
Let drive cool off
- Check for excessive ambient
temperature
- Clean Heatsink with compressed
air
- Clean inlet filter cubicle
- Ensure proper flow of cooling air
in compressor room
- Check if supply voltage is within
specs.
- Check if main supply voltage is
within specs. Check main fuses.
Overvoltage or
overtemperature
detected in IGBT (U
phase)
Let drive cool off
- Check for excessive ambient
temperature
- Clean Heatsink with compressed
air
- Clean inlet filter cubicle
- Ensure proper flow of cooling air
in compressor room
- Check if supply voltage is within
specs.
Overvoltage or
overtemperature
detected in IGBT (V
phase)
Overvoltage or
overtemperature
detected in IGBT (W
phase)
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