The genset controller provides extensive diagnostics by causing the status indicator light on the Control Switch to blink in a coded fashion. Following a fault shutdown the indicator light will repeatedly blink 1,2,3 or 4 blinks at a time.
• One blink indicates shut down due to high temperature.
• Two blinks indicate shutdown due to a loss of engine oil pressure.
• Three blinks indicate a service fault. To understand the type of service fault press the Stop button once to cause the two-digit, second-level fault code to blink. (Pressing Stop again will stop the blinking.) The two-digit code consists of 1, 2, 3, 4 or 5 blinks, a brief pause, and then 1 to 9 blinks.
The first set of blinks represents the tens digit and the second set of blinks the units digit of the shutdown code number. For example, shutdown code No. 36 appears as:
blink-blink-blink—pause—blink-blink-blink-blink-blink-blink— long pause—repeat
• Four blinks indicate that cranking exceeded 15 to 20 seconds without the engine starting.
Note: Fault codes Nos. 3 and 4 are first level faults. Avoid interpreting them as second level fault code Nos. 33 and 44, which have not been assigned as fault codes.
Restoring Fault Code Blinking – The fault code stops blinking after five minutes. Press Stop three times within five seconds to restore blinking. Note: The last fault logged will blink, even after the condition that caused the shutdown has been corrected
Please refer to the Troubleshooting section in your generators Operators Manual to obtain a full list of shutdown codes. Having the shutdown code prior to calling your local authorized Cummins Onan Servicing Dealer will save you time and money.
