43 MQ Power generator fault/alarm codes with symptom, cause and remedy — compiled from MQ Power service and controller documentation.
| Code | Meaning / symptom | Cause | Remedy |
|---|---|---|---|
| 27 | Undervoltage | ||
| 27-1 | Trip Alarm | ||
| 27-2 | Trip Alarm | ||
| 3 | Engine kW Overload | ||
| 32 | Trip Alarm | ||
| 32R | Reverse Power | ||
| 40 | Trip Alarm | ||
| 40Q | Loss of Excitation | ||
| 47 | Trip Alarm | ||
| 51 | Generator Overcurrent | ||
| 51-1 | Trip Alarm | ||
| 51-2 | Trip Alarm | ||
| 51-3 | Trip Alarm | ||
| 59 | Overvoltage | ||
| 59-1 | Trip Alarm | ||
| 59-2 | Trip Alarm | ||
| 78 | Vector Shift Trip | ||
| 78 Vector Shift and 81 ROCOF | Loss of Mains Protection | ||
| 81 | ROCOF (Rate of Change of Frequency) (Optional) | ||
| 81 ROCOF | Trip Pre-Alarm | ||
| 81O | Trip Alarm | ||
| 81ROCOF | Rate of Change of Frequency | ||
| 81U | Trip Alarm | ||
| Alarm Cooldown=4 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 | ||
| Alarm Unload Cooldown=5 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 | ||
| Alarm Unload=3 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 | ||
| Alarm=2 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 | ||
| D | Rotor e | ||
| MPR0052 | Rotor not rotating | ||
| MPR0563 | Deepening of noise | ||
| MPR0563lamron | Deepening of noise | ||
| Pre-Alarm=1 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 | ||
| SPN110 FMI10 | HIGH COOLANT TEMP | To acknowledge and “Hide” the fault and return to the single or four parameter display touch the “Enter Button”. The display will return to the single or four parameter display but the display will contain the “Active Fault” warning icon. Touching the “Enter Button” will redisplay the hidden fault. Touching the “Enter Button” once again will hide the fault and return the screen to the single or four parameter display. | |
| Status Only=0 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 | ||
| d | E civ e d lo rtn o c eldi | ||
| dionelos | Vibration | ||
| e | Civ e d lo rtn o c eldi | ||
| eciveadolrtno | Civ ed lo rtn o c | ||
| gnidniwroto | Rotor vibration | ||
| n | Oitc n ufla m | ||
| retrat S | G niri w e vitc effe D g niri w k c e h C | ||
| rotor e vitc effe D | G niri w d etc e n n o c si D g niri w ria p er d n a k c e h C eruta m ra nitiu cric-tro h s re y a L | ||
| s | Roto r e vitc efe D roto r e calp er ro k c e h C |
Compiled from MQ Power service manuals and controller documentation. Cause/remedy shown where extracted; always verify against the manual for your exact model.