Installation Guide
Troubleshooting
40 Installation Guidelines for Air-Cooled Generators
8.2 — Generator Troubleshooting
Table 8-2. Generator Diagnostics
Active Alarm LED  Problem
Things to
Check 
Solution
NONE GREEN Unit running in AUTO but no 
power in house.
Check Gener-
ator Discon-
nect circuit 
breaker.
Contact servicing dealer if Generator 
Disconnect circuit breaker is in the ON 
position.
HIGH 
TEMPERATURE
RED Unit shuts down during operation. Check the 
LEDs/Screen 
for alarms.
Check ventilation around the intake, 
exhaust and rear of generator. Contact 
serving dealer if no obstruction is found.
OVERLOAD 
REMOVE LOAD
RED Unit shuts down during operation. Check the 
LEDs/Screen 
for alarms.
Clear alarm and remove household 
loads from the generator. Put back in 
AUTO and restart.
RPM SENSE 
LOSS
RED Unit was running and shuts down, 
attempts to restart.
Check the 
LEDs/Screen 
for alarms.
Clear alarm and remove household 
loads from the generator. Put back in 
AUTO and restart. If problem returns, 
contact servicing dealer to investigate 
possible fuel issue.
NOT 
ACTIVATED
NONE Unit will not start in AUTO with 2-
wire start signal.
See if screen 
says unit not 
activated.
Refer to activation section in Owner’s 
Manual.
None GREEN Unit will not start in AUTO with 2-
wire start signal.
Check screen 
for start delay 
countdown.
If the start up delay is greater than 
expected, contact servicing dealer to 
adjust from 2 to 1500 seconds.
LOW OIL 
PRESSURE
RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
LEDs/Screen 
for alarms.
Check oil level. Add oil per Owner’s 
Manual. Contact servicing dealer if oil 
level is correct.
RPM SENSE 
LOSS
RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
LEDs/Screen 
for alarms.
Clear alarm. Navigate to the BATTERY 
MENU on the control pad LCD. Contact 
servicing dealer if battery is GOOD. 
Replace battery If CHECK BATTERY is 
displayed.
OVERCRANK RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
LEDs/Screen 
for alarms.
Check fuel line shutoff valve is in the ON 
position. Clear alarm. Attempt to start 
the unit in MANUAL. If it does not start 
or starts and runs rough, contact servic-
ing dealer.
LOW VOLTS 
REMOVE LOAD
RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
LEDs/Screen 
for alarms.
Clear alarm and remove household 
loads from the generator. Set back to 
AUTO and restart.
FUSE PROB-
LEM
RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
LEDs/Screen 
for alarms.
Check ATO 7.5 Amp fuse. Replace with 
same type fuse if bad. Contact servicing 
dealer if fuse is good.
OVERSPEED RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
L
EDs/Screen 
for alarms.
Contact servicing dealer.
UNDER
VOLTAGE
RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
LEDs/Screen 
for alarms.
Contact servicing dealer.
UNDERSPEED RED Unit will not start in AUTO with 2-
wire start signal.
Check the 
LEDs/Screen 
for alarms.
Contact servicing dealer.










