aXis
Hz Speed
Hz over speed / under speed
Engine · Alarm
The red speed icon lights if the engine ran above or below its preset speed limits. Manual 100515 says those limits are factory set to protect the generator and the circuits on it. The set shuts down, restart is disabled, and the exterior LED lights. The manual's instruction is to contact Champion or an authorized dealer. The icon stays on until the failure is corrected, and the set will not transfer or run.
Seen on: Champion home standby generators with the aXis controller covered by operator manual 100515. These are icon faults, not four-digit numeric codes.
Likely causes
- Engine speed outside the factory high or low limit. The owner page does not publish the hertz numbers.
Checks an owner can do
The cited source does not list a homeowner check for this fault. Leave the set off and use the note below.
When to call a pro
Do not keep resetting this icon. Speed faults can damage equipment connected to the generator. Call Champion or a dealer.
Source
Wording follows that document. Firmware can change a threshold. If this page and the manual shipped with your unit disagree, follow the manual.
What fixed mine
No approved reports for this code yet. Send one. It stays in the review queue until it is approved.
Related Champion codes
https://generatorcodes.com/brand/champion/hz-speed