Step 1: Check the actual temperature of the inverter.
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Open the electrical cabinet and use a thermometer or your hand to feel for heat to determine if the inverter is actually hot.
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If the actual temperature is normal but the machine still reports an error, you need to contact the manufacturer’s technical team for a more in-depth check of the software or sensor.
Step 2: Check the cooling fan.
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Observe visually or feel the airflow with your hand. If the inverter is hot but the fan isn’t spinning, you need to remove the fan to check the resistor.
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Use a multimeter to measure the resistance between the two terminals of the fan: if the resistance is zero or there is no resistance, the fan is broken and needs replacing.
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If the fan is still working, continue checking the 24V power supply at the socket. If there is no 24V power, the fault lies in the power supply system and requires more specialized intervention.
Step 3: Check the environment and mechanical load.
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Ventilation slots: Clean dust and dirt from the ventilation slots and remove any obstructions from the electrical cabinet door to ensure proper airflow.
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Mechanical overload: Check components such as the feed shaft or the glue dispensing assembly. If impurities or foreign objects cause mechanical jamming, the inverter will be overloaded, leading to significant heat generation.