1448
Category: Alarm
Cause
The power unit heatsink temperature (shown in 0x2D84：001, 004, 006) has exceeded the fixed error threshold (100 °C). • Ambient temperature too high. • Fan or ventilation slots contaminated. • Fan defective.
Corrective action
• Check the supply voltage. • Provide adequate cooling for the equipment. At 100% load, 60℃ to +70°C is a typical heatsink temperature shown in 0x2D84:001, 004, 006. • Clean the fan and ventilation slots. Replace the fan if necessary. • Reduce the switching frequency 0x2939