1. The Variable Frequency Power Supply Failed to Start. Reason: Input power failure; input fuse not installed or blown. Solution: Check if the power cord, plug, and outlet are loose; inspect the input fuse.
2. Abnormal Movement of Variable Frequency Power Supply and Ventilation Holes in Fan: Reason: Foreign objects cannot fall into the ventilation holes or the electric fan is stuck; there is an issue with the fan system. Solution: Remove the foreign object; replace the faulty fan.
3. Variable-frequency power supply has a buzzer alarm, and pressing "reset" cannot be released. Reasons: Short circuit exists between the output terminal and the load equipment; reset button malfunction; inadequate ventilation can lead to continuous increase in working temperature of the enterprise machine. Solutions: Re-examine and correct; use backup reset button; place the machine in a well-ventilated area. Aviation ground power supply 2, 36V aviation power supply 1, 400HZ variable-frequency power supply 7, 115/200V power supply 2, 27V DC power supply
4. The frequency, voltage, and current meters of the variable frequency power supply display "0," and the warning sound may ring simultaneously. Causes: Overcurrent repair; short circuit maintenance; other reasons. Solutions: Reduce load current; check if the output is short-circuited; press the reset button to restart.
