ARMY TM 9-6115-642-10 AIR FORCE TO 35C2-3-455-11 MARINE CORPS TM 09247A/09248A-10/1 Table 2-2.  Malfunction Indicator Panel Key Control or Indicator Function 1 NO FUEL indicator Lights when fuel level in fuel tank is below preset level. 2 COOLANT HIGH TEMP indicator Lights when engine coolant temperature exceeds 225° ± ^5° F (107° ± 30 F). 3 OVERVOLTAGE indicator Lights when voltage in 120 volt generator coil exceeds 153 ± 3 volts. 4 PUSH TEST RESET LAMPS Tests and resets fault indicator lamps. 5 OVER LOAD indicator Lights when current in any phase exceeds 110 percent of rated current. 6 GROUND FAULT CIRCUIT INTERRUPTER TEST pushbutton Tests Ground Fault Circuit Interrupter. 7 Ground Fault Circuit Interrupter indicator Mechanically trips red indicator, at ground fault condition in circuit of convenience receptacle. 8 Ground Fault Circuit Interrupter PUSH TO TEST Pushbutton Depress to reset Ground Fault Circuit Interrupter after test or ground fault has occurred. 9 SHORT CIRCUIT indicator Lights when generator set output in any phase exceeds 425 ± 25 percent of rated current. 10 LOW OIL PRESSURE indicator Lights when engine lubrication systems pressure is less than 15 + 3 psi (103.4 ± 20.7 kPa) during engine operation. 11 Convenience Receptacle Overload Circuit Breaker (10-amp in-line fuse on generator sets, contract number DAAK01- 88-D-D080) Circuit breaker trips on when load on convenience receptacle exceeds 10 amps (fuse blows on generator sets, contract number DAAK01-88-D-D080). 2-6  Change 2