Delta SVG300A43A-11, Quick Star

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Maintenance and Service
5-3
Panel display Description Solution
Main board temperature
exceeds the protection level
Check whether the ambient temperature is too high
Check for foreign objects in the heat sink and whether the
fan is spinning
Check whether there is enough room for ventilation
Main board temperature
detection circuit error
Send for repair
Memory circuit error
Press the RESET key to restore the parameters to factory
settings
If this does not work, send for repair
Errors in the parameter ranges
read from memory
Press the RESET key to restore the parameters to factory
settings
If this does not work, send for repair
Voltage boost failure during
operation
Check whether the power supply voltage is normal
Output current exceeded safe
operating range during
operation
Check whether the power supply voltage is normal
Check whether the system model number matches with
the machine
Check whether the phase-locked frequency correctly
matches the power supply frequency
Check whether the CT wiring is correct and in the correct
phase sequence
Check whether the system temperature is within operating
range
Electromagnetic contactor
acting irregularly
Check whether the power supply voltage is normal
Cut off the power, check whether the wirings between
transformer and power supply comply with the power
supply voltage level
Check whether the mains voltage is the same as the
power supply voltage in the HMI main screen
Cannot complete power supply
phase-locking
Check whether the power supply voltage is normal
Check whether the main wiring frequency setting is the
same as the power supply frequency