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GENERATORCODES

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RS home standby display

14

Overfrequency

Engine · Shutdown

Fault code 14, overfrequency. The RS20 operator manual lists generator-set loads, engine governor function, fuel supply, air-fuel mixture, exhaust, choke, demand regulator, carburetor, windings, and wire connections. Its corrective action is authorized dealer service. This operator manual does not print a hertz threshold in that section, so none is added here.

Seen on: Cummins RS-series home standby sets covered by the RS20 operator manual. QuietConnect RS13A–RS20AC operator manual A053X174 repeats these fault code numbers.

Likely causes

  • Governor, fuel, or mixture letting frequency run high.
  • The manual also lists loads, windings, and connections, so the code alone does not pick one part.

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

Leave it shut down. Overfrequency is a dealer diagnosis in this manual.

Source

Cummins RS20 home standby operator manual, section 5 (fault codes and blink pattern). The same code numbers are listed in operator manual A053X174 for the RS13A, RS17A, RS20A, and RS20AC QuietConnect sets.

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 Cummins codes

https://generatorcodes.com/brand/cummins/14