TROUBLESHOOTING THE NHE CONTROL
Trouble
Engine Starts But
Stops When Start
Switch is Released
(cont.)
Engine Starts
And Runs; Then
Stops. Set Restarts
Immediately
or
Set Restarts
After Cooling Down
Low Battery
Possible Cause
3.
Defective control PC board.
1.
Fuel level is below generator
set fuel pickup tube or
oil level is low.
2.
Faulty choke operation due
to
sticking choke linkage,
incorrect choke adjustment,
open circit in wiring
between choke heater and
generator, or defective choke
heater.
3. Vapor lock due to:
a. high ambient air temperature
b. faulty fuel pump.
4.
Breaker points sticking.
5.
Contaminated fuel.
1. Weak or discharged battery.
generator set charger will
not recharge a battery that
is in a very
low
state
of
charge.
2.
Load connected
to
battery
while set is turned
off.
3. Disconnect the negative
(-)
battery cable at the battery and
remove control lead P1-6
from the battery positive
(+)
terminal on the
K1
start
solenoid. Connect a
DC
ammeter
and
5
ampere fuse in series
between the P1-6 lead wire
and the stud terminal
on the
K1
solenoid. With set
running, the ammeter should read
between
0
and
1
ampere.
If
meter shows battery is discharging,
fault is due to:
a. defective generator charge
winding
b.
CRI power rectifier open.
Corrective Action
.
3.
Replace control PC board.
1.
Check fuel and oil levels
and refill as necessary.
2.
Refer
to
Fuel System
section for testing and
service procedures.
3a. Remove any objects or debris
that may restrict airflow
to and from the set
3b. Refer to Fuel System section
for test and service
procedures
4.
Replace breaker points.
5.
Refill tank with fresh fuel.
1. Connect a separate battery
charger to bring battery
up to full charge.
2.
Turn
off
load.
3a. Refer to Generator section
for testing and service
procedures.
3b. Replace control
PC
board.
7-6
Redistribution or publication of this document
by any means, is strictly prohibited.
Redistribution or publication of this document
by any means, is strictly prohibited.
To Next Page
