Yamaha NPS 4500 Owner's Manual page 24

G.4 There are two Fault Indicator Lights on the Generator Control Panel: Overload
Alarm Light and Oil Alert Light. See
• Overload Alarm Light blinks rapidly when the Generator is less than five percent (5%)
overloaded
o Generator will continue running and outputting electricity
• Overload Alarm Light stays on continuously when the Generator is more than five percent
(5%) overloaded
o Generator will keep running but the Generator output will be cut off automatically
within twenty (20) seconds
• Overload Alarm Light stays on when the Generator is faulty (i.e. short circuit, low voltage,
over voltage, engine over speed, etc.)
o Generator will keep running but the Generator output will be automatically cut off
• Oil Alert Light blinks when the oil level is too low. In this case, the engine will shut down
automatically and the Oil Alert Light will remain illuminated.
NPS offers full support for service, warranty and technical assistance through
www.NPSrvpower.com or 1-866-407-1727 during normal business hours (9:00 am-5:00pm
(MST)) if assistance is requested outside normal business hours, leave a message or send an
email and a team member will assist you as soon as possible.
G. Troubleshooting
Exhibit 2 and Exhibit 6
Page 24 of 30 Rev 1.7