Troubleshooting / Quick Reference Guide
36
Owner’s Manual for 50 Hz Air-Cooled Generator Sets
Quick Reference Guide
To clear an active alarm, press OFF mode button and then ENTER button on control panel. Then press AUTO mode
button. If alarm reoccurs, contact an IASD.
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 set,
intake, exhaust, and rear of generator set.
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 set. 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 set. Put into AUTO and
restart. If generator set does not start,
contact an IASD.
NOT ACTIVATED
NONE
Unit will not start in AUTO
with mains power loss.
Check if screen says
unit not activated.
See Activation in installation manual.
NONE
GREEN
Unit will not start in AUTO
with mains power 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 mains power 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 mains power loss.
Check LEDs / screen
for alarms.
Clear alarm. Using control panel, inspect
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 mains power loss.
Check LEDs / screen
for alarms.
Verify fuel 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 mains power loss.
Check LEDs / screen
for alarms.
Clear alarm and remove household loads
from generator set. Put in AUTO and
restart.
OVERSPEED
RED
Unit will not start in AUTO
with mains power loss.
Check LEDs / screen
for alarms.
Contact an IASD.
UNDERVOLTAGE
RED
Unit will not start in AUTO
with mains power loss.
Check LEDs / screen
for alarms.
Contact an IASD.
UNDERSPEED
RED
Unit will not start in AUTO
with mains power loss.
Check LEDs / screen
for alarms.
Contact an IASD.
STEPPER
OVERCURRENT
RED
Unit will not start in AUTO
with mains power loss.
Check LEDs / screen
for alarms.
Contact an IASD.
MISWIRE
RED
Unit will not start in AUTO
with mains power loss.
Check LEDs / screen
for alarms.
Contact an IASD.
OVERVOLTAGE
RED
Unit will not start in AUTO
with mains power loss.
Check LEDs / screen
for alarms.
Contact an IASD.