Troubleshooting guide problem cause – Generac Power Systems 004270-1 User Manual
Page 39
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Appendix 1 - Troubleshooting
QUIETPACT™ 75D Recreational Vehicle Generator
TROUBLESHOOTING
TROUBLESHOOTING GUIDE
PROBLEM CAUSE
CORRECTION
The engine will not crank.
1.
System control fuse blown
1.
Replace fuse.
2.
Loose corroded or defective
battery cables
2.
Tighten, clean, or replace,
as necessary.
3.
Defective engine Start/Stop
switch
3.
Replace Start/Stop switch.
4.
Defective starter contactor
4.
Replace contactor.
5.
Defective starter motor
5.
Replace starter motor.
6.
Low or defective battery
6.
Charge or replace battery.
7.
Defective engine control board
7.
Replace control board.
The engine cranks but
1.
Vehicle fuel shutoff valve closed
1.
Open valve, if so equipped.
will not start.
2.
Out of fuel
2.
Replenish fuel.
3.
Defective fuel solenoid (FS)
3.
Replace solenoid.
4.
Defective fuel pump (FP)
4.
Repair or replace fuel pump.
5.
Open #14 wire from
engine control board
5.
Check connections and
insulation of #14 wires.
6.
Plumed fuel filter or fuel line
6.
Clean or replace fuel filter or line.
7.
Engine mechanical parts failure
7.
Repair or replace parts.
8.
Defective engine control board
8.
Replace control board.
The engine starts hard
and runs rough.
1.
Plugged or damaged
air filter
1.
Check, clean, or replace, as needed.
2.
Defective fuel pump (FP)
2.
Repair or replace fuel pump.
3.
Plugged fuel filter or fuel line
3,
Clean or replace fuel filter or line.
-
4.
Water in fuel
4.
Drain fuel system and refill.
5.
Improper preheat
5.
Preheat unit.
The engine starts, but shuts
1.
Low engine oil level
1.
Check oil and add oil, as needed.
down when the Start/Stop
2.
Overheated engine
2.
Check cooling system for leaks.
switch is released.
3.
Defective Start/Stop Switch
on panel or remote Start/Stop
3.
Disconnect Remote Harness
Check/Replace Start/Stop Switch
4.
Defective low-oil
pressure switch
4.
Replace pressure switch.
5.
Defective high-coolant
temperature switch
5.
Replace temperature switch.
6.
No AC output
6.
Contact a Generac Authorized
Service Dealer
7.
Defective engine control board
7.
Replace control board.
The Start/Stop switch is
1.
Defective Start/Stop switch
1.
Replace switch.
set to Stop, but the engine
continues to run.
2.
Open/Disconnected #18 wire
between Start/Stop switch
and engine control board
2.
Reconnect or close wire.
3.
Open/Disconnected #0 wire
between Start/Stop switch
and engine control board
3.
Reconnect or close wire.
4.
Defective engine control board
4.
Replace control board.
There is no AC output from
the generator.
1.
Main-line circuit breaker open
1.
Reset line breaker
to ON (or closed).
2.
Fault with vehicle circuit
breaker and/or fuses
2.
Reset and replace, if necessary.
3.
Generator internal failure
3.
Contact a Generac Authorized
Service Dealer.
Generac* Power Systems, Inc. 3"7