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ELECTRICAL DIAGNOSTICS (HW3000/L MODELS)
8-2 www.honeywellgenerators.com Honeywell Portable Electrical Generator Service Manual
8.1 ELECTRICAL DIAGNOSTICS (HW3000/L MODELS)
Perform “Alternator Check”
Remove Alternator End Cover
120V Circuit #1 Check
(No Output OR
Voltage Out of Spec)
Check Wires and Connections
from AVR to Brush Assembly
for Proper Orientation
of Wire Connections
If a Connection is Loose or
Disconnected, Reestablish
a Tight Connection
If a Wire or Connection is Damaged,
Replace AVR
Check for Continuity in Each Circuit of
Duplex Outlet #1
from the Female Socket on the Front
to the Terminal on the Back
If No Continuity,
Replace Duplex Receptacle
If Continuity Present,
Replace Electrical Panel
Check Continuity from
Duplex Outlet #1
for Each Connection (X or Y, W, G) to
Duplex Outlet #2
If Continuity Not Present
in Any Circuit,
Check Wires and Connections from
Duplex Outlet #1 to Duplex Outlet #2
If a Connection is Loose or
Disconnected, Reestablish a
Tight Connection and Recheck
Continuity
If a Wire or Connection
is Damaged,
Replace Electrical Panel
120V Circuit #2 Check
(No Output OR
Voltage Out of Spec)
General Electrical Check
Check Output Voltage (X to W) of
Duplex Outlet #1= 123-126V
Adjust Voltage Regulator, if Necessary
by Turning the Potentiometer on
the Rear of the Voltage Regulator
If Voltage Still Out of Range
Replace Voltage Regulator
Conduct This Check Only When
Directed by General Electrical Check
Start Engine and Run at No Load
Conduct This Check Only When
Directed by General Electrical Check
Check for Continuity in
Duplex Outlet #1 Breaker
from the Line Terminal
to the Load Terminal
If No Continuity,
Replace Duplex Circuit Breaker
Check for Continuity in
Duplex Outlet #2 Breaker
from the Line Terminal
to the Load Terminal
If No Continuity,
Replace Duplex Circuit Breaker
Check for Continuity in Each Circuit of
Duplex Outlet #2
from the Female Socket on the Front
to the Terminal on the Back
If No Continuity,
Replace Duplex Receptacle
If Continuity Present,
Replace Electrical Panel
Check for Tripped Duplex Circuit Breaker(s)
Outlets Above the Breaker Indicate
the Excess Load Source
Resolve Overload Problem to Ensure Safe Operation
After Electrical Load Resolved Wait Several Minutes
(for Thermal Breaker to Cool) Push to Reset Breaker
If Cannot Reset, Replace Breaker
Start Engine and Run at No Load
Check Engine Frequency = 61.5 to 63 Hz
Adjust Governor, if necessary
(see Manual Section “Governor Adjustment”)
If Frequency Still Out of Range,
see
Engine Diagnostics Section
W
G
X
123-
126V
Check Voltage Output at NEMA 5-20R 120V
Duplex Outlet #1
If Voltage Out of Range,
Perform “120V Circuit #1 Check”
W
G
Y
123-
126V
Check Voltage Output at NEMA 5-20R 120V
Duplex Outlet #2
If Voltage Out of Range,
Perform “120V Circuit #2 Check”
Remove Main Control Panel from
Control Panel Assembly
Check Wires and Connections
for the Exciter & AVR Tap
from AVR to Alternator
On AVR Side of Connection:
If a Connection is Loose or
Disconnected, Reestablish a
Tight Connection
If a Wire or Connector is Damaged,
Replace AVR
On Alternator Side of Connection:
If a Connection is Loose or
Disconnected, Reestablish a
Tight Connection
If a Wire or Connector
is Damaged,
Replace Alternator
Check for Continuity from
Duplex Outlet #1
for Each Connection (X, Y, W, G) to
Corresponding Alternator Terminal
If Continuity Not Present
in Any Circuit,
Check Wires and Connections
from Receptacle to Alternator
If a Connection is Loose or
Disconnected, Reestablish a Tight
Connection and Recheck Continuity
If a Wire or Connection is Damaged,
Replace Electrical Panel
Refer to Illustrations on
Pages 8-3 and 8-5.