Carrier VECTOR 1550 Series Operation & Service Manual

62-61753-21 7-32AlarmNO. Steps ALARM / CAUSE CORRECTIVE ACTION41 ENGINE STALLED TRIGGER-ON: The engine is running, RPM sensor is good, and engine speed is less than 10 RPM;orThe engine is running, RPM sensor alarm is ON, and the Oil Pressure switch contacts are open. UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm.Standby Operation: This alarm will not activate in standby operation. RESET CONDITION: Auto Restart after 15 minutes, or Alarm may be manually reset via keypad or byturning the unit off, then back on again.NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the activealarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see ifany active alarm occurs. Continue with the steps below as necessary.1 Check For Alarm 130 - Check RPM Sensora. Check for alarm 130. When Alarms 130 and 41 occur at the same time, gen-erally the engine has run out or is running out of fuel.This causes the engine RPM to surge and drop. Checkfuel tank and add fuel as necessary.Check fuel lines between the fuel tank and the fuelpump inlet for drawing air in.2 Was Engine Shut Off Manually?a. Check for external cause. Correct problem.3 Check For Bad F2 Or F3 Fuse Alarma. Check for alarm 71. Alarm conditions must be corrected and the alarmcleared to continue.4 Check Fuel Systema. Check for Alarm 1. Fill tank as needed.b. Check fuel flow. Unrestricted fuel flow through system.Fuel not gelled.c. Check fuel system prime. No air in fuel system.d. Check fuel system check valvefrom filter to injection pump.Check valve must hold fuel and not leak back.5 Check engine air-intake systema. Check air filter. Replace if required.b. Inspect air intake system. Hoses & tubes in good condition.No kinks or restrictions.6 Check engine exhaust systema. Inspect the exhaust system. Must be clear and unobstructed.7 Check enginea. Check Injection pump timing. Timing must be correct.b. Check engine valve adjustment. Rocker arm clearance must be correct.c. Check engine compression. Compression must be above 400 psig (27.2 bar.)8 Check refrigeration systema. Check discharge & suction pres-sures.Must be within normal operating range for conditions.