6AT3.4 Engine Engine

• The fault lamp lights. Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run. FAULT 1 or FAULT 2
  Fix: Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits.
• The fault lamp lights but no fault exists.
  Fix: The monitor board or a sensor may be at fault. Contact an authorized dealer or distributor for service.
• SWITCH OFF lamp flashes.
  Fix: 8. *12-Light Panel Only.
• Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used.
  Fix: Move the Run/Stop/Remote switch to the Remote position for automatic starting.
• Remote circuit breaker is tripped.
  Fix: Reset breaker and restart. Contact an authorized dealer or distributor if breaker trips after resetting.
• PRE LO OIL PRES lamp lights. Engine continues to operate.
  Fix: 4. Indicates engine oil pressure has dropped to 20 psi (138 kPa). If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedures in step 5.
• PRE HI ENGINE TEMP lamp lights. Engine continues to operate.
  Fix: 1. Green RUN lamp lights following engine start-up. 2. Indicates engine has begun to overheat and engine temperature has risen to approximately 202°F (94°C). If generator is powering non-critical and critical loads and cannot be shutdown, use the following: a. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. c. Open doors or windows in generator area to increase ventilation. If engine can be stopped, follow procedure in step 3.
• OVERCRANK lamp lights and engine stops cranking.
  Fix: 6. *12-Light Panel Only. Engine runs, shuts down, and LO OIL PRES lamp lights.
• NO AC output voltage.
  Fix: Field breaker is tripped. Reset breaker. Contact an authorized dealer or distributor if voltage build up causes breaker to trip.
• LO OIL PRES lamp lights. Engine shuts down.
  Fix: 5. Indicates engine oil pressure has dropped to 14 psi (97 kPa). Check oil level, lines and filters. If oil system is okay but oil level is low, replenish. Reset control and restart. Contact an authorized dealer or distributor if oil pressure is not in the range of 30 to 55 psi (206 to 379 kPa).
• LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights.
  Fix: 10. *12-Light Panel Only.
• LO FUEL lamp lights. Engine continues to run.
  Fix: 9. *12-Light Panel Only.
• LO ENG TEMP lamp lights. Set is in standby mode but is not operating.
  Fix: 11. (Lamp lights when engine coolant temperature is 70°F (21°C) or lower. Since the lamp goes out after the engine
• Indicates possible fuel system problem.
  Fix: A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary (see MAINTENANCE section). c. Check for dirty or plugged air filter and replace if necessary (see MAINTENANCE section). d. Refer to Step 5. e. Reset the control and restart after correcting the problem. Contact an authorized dealer or distributor for service if none of the above.
• Indicates engine has run out of fuel.
  Fix: Check fuel level and replenish as required.

Compiled from service & troubleshooting documentation across every generator set that uses the 6AT3.4.