1. The variable frequency power supply failed to start
Reason: Power input 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 supply and fan ventilation openings
Reason: Foreign objects cannot fall into the ventilation holes or the fan blades may get stuck; there is an issue with the fan system.
Solution: Remove foreign objects; replace malfunctioning fans.
3. The variable frequency power supply has a buzzer alarm; pressing "Reset" cannot be released.
Reason: Short circuit between the output end and the load equipment; failure of the reset button; inadequate ventilation leads to a continuous rise in working temperature of the company's machinery.
Solution: Re-examine and correct; use the auxiliary 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 may sound simultaneously.
Reason: Overcurrent maintenance; short circuit maintenance; other reasons. Solutions: Reduce load current; check for short circuit at the output; restart by pressing the reset button. 400HZ Frequency Converter Power Supply
