Remedy
- Check mains voltage.
- Provide for a sufficient cooling of the device. In case of a 100 % load, 60 C to +70°C are normal. Display of the heatsink temperature in 0x2D84:001 (P117.01).
- Clean fan and ventilation slots. If required, replace fan.
- Reduce switching frequency 0x2939 (P305.00)
Cause
The heatsink temperature of the power unit (display in 0x2D84:001 (P117.01)) has exceeded the fixed error threshold (100 °C).
- Ambient temperature too high.
- Fan or ventilation slots are polluted.
- Fan is defective.
Description
Fault - Power unit overtemperature
Keypad display
PU Overtemp.
Fault message ID
16912
Severity/response
Fault