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 |
|---|---|---|---|
| 3 | Engine kW Overload | ||
| 27 | Undervoltage | ||
| 27-1 | Trip Alarm | ||
| 27-2 | Trip Alarm | ||
| 32 | Trip Alarm | ||
| 32 | Reverse Power | ||
| 32R | Reverse Power | ||
| 40 | Trip Alarm | ||
| 40Q | Loss of Excitation | ||
| 47 | Trip Alarm | ||
| 47 | Phase Imbalance | ||
| 47 | Voltage Imbalance | ||
| 51 | Generator Overcurrent | ||
| 51 | Overcurrent (Optional) | ||
| 51 | Timed 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 | ||
| 81O | Overfrequency | ||
| 81ROCOF | Rate of Change of Frequency | ||
| 81U | Trip Alarm | ||
| 81U | Underfrequency | ||
| 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 | ||
| D | Dio nelo s | ||
| 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 | ||
| MPR0052 | Rotor not rotating | ||
| MPR0563 | Deepening of noise | ||
| MPR0563lamron | Deepening of noise | ||
| n | Oitc n ufla m | ||
| Pre-Alarm=1 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 | ||
| retrat S | G niri w e vitc effe D g niri w k c e h C | ||
| retrat S | D e c alp er ro n a el C re n a elc ria d e g g ol C e c alp er ro n a el C | ||
| retrat S | 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 n u r to n s e o d retrat S | ||
| 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 | ||
| rotor e vitc effe D | G nid ni w .eruta m ra e c alp e R re w o p C A d n a se sir d e e p s e nig n E e b to n n a c ro w ol o ot si e g atlo v .e s u | ||
| s | Roto r e vitc efe D roto r e calp er ro k c e h C | ||
| SPN110 FMI10 | HIGH COOLANT TEMP — WARNING | ||
| Status Only=0 | Status Only=0, Pre-Alarm=1, Alarm=2, Alarm Unload=3, Alarm Cooldown=4, Alarm Unload Cooldown=5 |
Compiled from MQ Power service manuals and controller documentation. 8 code numbers mean different things on different controllers; each meaning is listed with the models it applies to. Cause/remedy shown where extracted; always verify against the manual for your exact model.