Operating Guide
Troubleshooting / Quick Reference Guide
Owner’s Manual for 60 Hz Air-Cooled Generators 37
Quick Reference Guide
To clear an active alarm, press OFF button on the control panel, then the ENTER button, and finally the AUTO button. 
Contact an IASD if alarm reoccurs.
Active Alarm LED Problem Things to Check Solution
NONE
FLASHING 
GREEN
Unit running in AUTO 
but no power in house.
Check MLCB. Check MLCB. If it is ON, contact an IASD.
HIGH 
TEMPERATURE
RED
Unit shuts down during 
operation.
Check LEDs / screen 
for alarms.
Inspect ventilation around generator, 
intake, exhaust, and rear of generator. If 
no obstructions are present, contact an 
IASD.
OVERLOAD 
REMOVE LOAD
RED
Unit shuts down during 
operation.
Check LEDs / screen 
for alarms.
Clear alarm and remove household loads 
from generator. Put in AUTO and restart.
RPM SENSE LOSS RED
Unit was running and 
shut down, attempts to 
restart.
Check LEDs / screen 
for alarms.
Clear alarm and remove household loads 
from generator. Put into AUTO and 
restart. If generator does not start, contact 
an IASD.
NOT ACTIVATED NONE
Unit will not start in 
AUTO with utility loss.
Check if screen says 
unit not activated.
See Activation in installation manual.
NONE GREEN
Unit will not start in 
AUTO with utility loss.
Check screen for start 
delay countdown.
If startup delay is greater than expected, 
contact an IASD to adjust from 2 to 1500 
seconds.
LOW OIL
 PRESSURE
RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Check oil level and add oil as needed. If 
oil level is correct, contact an IASD.
RPM SENSE LOSS RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Clear alarm. Using control panel, check 
battery by navigating to BATTERY MENU 
option from MAIN MENU. If battery 
condition displays GOOD, contact an 
IASD. If control panel displays CHECK 
BATTERY, replace battery.
OVERCRANK RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Verify fuel line shutoff valve is ON. Clear 
alarm. Start unit in MANUAL. If it does not 
start, or starts and runs rough, contact an 
IASD.
LOW VOLTS 
REMOVE LOAD
RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Clear alarm and remove household loads 
from the generator. Put in AUTO and 
restart.
OVERSPEED RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Contact an IASD.
UNDERVOLTAGE RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Contact an IASD.
UNDERSPEED RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Contact an IASD.
STEPPER 
OVERCURRENT
RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Contact an IASD.
WIRING ERROR RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Contact an IASD.
OVERVOLTAGE RED
Unit will not start in 
AUTO with utility loss.
Check LEDs / screen 
for alarms.
Contact an IASD.










