What does it mean when my KStar YDC9300-RT says 'Mains volt. Abnormal'?
If your KStar UPS shows 'Mains volt. Abnormal', it signifies that the mains voltage is exceeding the upper or lower limit, resulting in the rectifier shutting down.
Why is my KStar YDC9300-RT UPS showing 'Mains freq. abnormal'?
If your KStar UPS displays 'Mains freq. abnormal', it means the mains frequency is out of the acceptable range, causing the rectifier to shut down.
What does 'DC Bus over-voltage' mean on my KStar YDC9300-RT UPS?
A 'DC Bus over-voltage' message on your KStar UPS indicates that the rectifier, inverter, and battery converter have been shut down due to a high DC bus voltage.
What does 'DC Bus under-voltage' mean on my KStar YDC9300-RT UPS?
A 'DC Bus under-voltage' message on your KStar UPS indicates that the rectifier, inverter, and battery converter have been shut down due to a low DC bus voltage.
What does 'Rectifier Over Temperature' mean on my KStar YDC9300-RT?
If your KStar UPS displays 'Rectifier Over Temperature', it means the temperature of the heatsink is too high to allow the rectifier to continue running. As a result, the charger and inverter will shut down.
Why does my KStar YDC9300-RT say 'Bypass Not Available'?
If your KStar UPS displays 'Bypass Not Available', it means that the frequency or voltage is out of the acceptable range for bypass. This message appears when the UPS is online and indicates that the bypass mode may not be available if required.
What does 'Inverter Over temperature' mean on KStar YDC9300-RT?
If your KStar UPS displays 'Inverter Over temperature', it indicates that the temperature of the inverter heatsink is too high to keep the inverter running.
What does 'Battery under-voltage' mean on my KStar YDC9300-RT?
If your KStar UPS displays 'Battery under-voltage', it means the battery voltage is too low, and the charger has been deactivated.
What does 'Battery over-voltage' mean on my KStar YDC9300-RT?
If your KStar UPS displays 'Battery over-voltage', it means the battery voltage is too high, and the charger has been deactivated.
What does 'Fan fault' mean on my KStar UPS?
If your KStar UPS displays 'Fan fault', it indicates that at least one of the cooling fans has failed. As a result, the rectifier, inverter, and charger will shut down.
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