B2BEmersonEIMS serves commercial, industrial & institutionalcommercial, industrial, healthcare, telecom, hospitality, government & contractor clients.• Engineering-led • SLA-backed • Documented commissioning
Keyboard Shortcuts
ComAp controllers show this as a text alarm on the display, not as a numbered code.
The engine has exceeded maximum speed and the ComAp controller has initiated an emergency shutdown. Overspeed protection prevents catastrophic engine damage from mechanical failure due to excessive rotational forces.
Need parts? Call us with your engine or controller model and we will confirm what we can supply and when.Call +254 768 860 665
Default overspeed is typically 115% of rated speed - 1725 RPM for a 50Hz 1500 RPM engine. This is configurable but should not be set higher than engine manufacturer limits.
This is load rejection overspeed. When large loads disconnect suddenly, the engine accelerates. A properly tuned governor should control this within limits.
Send us the code or alarm and what the generator is doing, and one of our engineers will help you diagnose it.
Search other controller alarms and engine fault codes, with troubleshooting steps, in Generator Oracle.
Launch Generator Oracle →Full diagnostic guide
A fault code names a symptom, not a cause. Our engineers have written the diagnostic sequence they use on site for this class of fault — ranked causes, ordered steps with the reading expected at each one, and the point at which to stop and call someone.
10 diagnostic steps · intermediate · technician
8 diagnostic steps · intermediate · technician