Fagor alarm E300: Over-temperature at the heatsink of the power supply or compact module
DDS drive display code (seven-segment; PS/XPS/RPS power supplies) · Fagor PS/XPS/RPS
What it means
The power heatsink of the supplying module (PS/XPS/RPS) or of a compact ACD/SCD/CMC drive got too hot and the system stopped to protect it. Let the system rest several minutes and reduce the effort demanded. Older XPS units without numeric display mirror this fault via front-LED combinations.
Likely causes
- power supply fan failed or clogged
- sustained cycle above supply rating
- ambient/cabinet cooling insufficient
- thermistor drift on heatsink
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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Cooling fan kit for PS/XPS/RPS module
fan · Common cause
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PS-25B4 / XPS-25 / XPS-65 / RPS-xx module (if power stage cooked)
power-supply · Check if others ruled out
Need the part urgently?
Send us alarm E300 with your machine details — typical RFQ turnaround is 24–48h.