Troubleshooting - Yamaha NPS 4500 Owner's Manual

Generator will not start:
G.1 Generator does not crank
• Inspect battery voltage and connection to ensure adequate voltage and secure connections
o if you have a low battery or poor connections, Generator will not turn over
• Inspect the Master 12Volt Power "ON/OFF" Switch and verify it is in the "ON" position. See
Exhibit 2
o if battery voltage is adequate and Master 12Volt Power Switch is in the "ON" position
 Attempt to start from another starting option
 If generator still will not crank, manually turn Automatic Choke to "FULL" and
use pull start to start the Generator. See
 If still wont start, contact your dealer or NPS directly
G.2 Generator cranks but does not fire
• Inspect for adequate fuel
o if fuel is depleted or shut off it will not start
• Inspect for spark
o if your spark plug has carbon buildup, is fuel saturated or if ignition wire is damaged/
disconnected, it will not start
• If generator has fuel and spark plug is intact and working properly and it still will not start,
then contact your dealer or NPS directly
G.3 Generator is running but not powering my RV
• Check 30 amp breakers on the generator to see if they have tripped. If tripped, then reset
o if they will not reset, then contact your dealer or NPS
• Check circuit breaker on Control Module (See
then reset
o if it will not reset, then contact your dealer or NPS
• Inspect the breakers and GFCI inside the RV to see if they have tripped. If tripped, then reset
o if they will not reset or still will not power, then contact your dealer or NPS
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
Page 23 of 30
Exhibit 2
6) to see if it has tripped. If tripped,
Rev 1.7