1. 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. Aviation Power
2. Abnormal movement of variable frequency power supplies and ventilation openings for fans
Reason: Foreign objects cannot fall into the ventilation holes or the fan blades may become jammed; there is an issue with the fan system.
Solution: Remove foreign objects; replace faulty fans.
3. The frequency conversion power supply has a buzzer alarm, and pressing "Reset" cannot be released.
Reason: Short circuit between the output end and load equipment; malfunction of the reset button; inadequate ventilation leads to continuous rise in working temperature of the company's machines.
Solution: Recheck and correct; use the backup reset button; place the machine in a well-ventilated area.
4. The frequency meter, voltage meter, and current meter of the variable-frequency power supply display "0," and the warning sound can ring simultaneously.
Reason: Overcurrent maintenance; short-circuit maintenance; other reasons. Solutions: Reduce load current; check for short-circuit in the output; restart by pressing the reset button. 400HZ Variable Frequency Power Supply
