Section 5: Troubleshooting - Generac Power Systems PowerPact G0069981 Owner's Manual

Section 5: Troubleshooting

System Diagnosis
Problem
Engine will not crank.
Engine cranks but will
not start.
Engine starts hard and
runs rough.
Generator is set to
OFF, but the engine
continues to run.
No AC output from
generator.
No transfer to standby
after utility source
failure.
Unit consumes large
amounts of oil.
* Contact an IASD for assistance.
Owner's Manual for 7.5 kW PowerPact™
Cause
1. Fuse blown.
2. Loose, corroded or defective battery cables.
3. Defective starter contact.
4. Defective starter motor.
5. Dead battery.
6. Auxiliary shutdown switch is OPEN (O).
1. Out of fuel.
2. Defective fuel solenoid (FS).
3. Defective spark plug(s).
4. Valve clearance out of adjustment.
5. In cold weather condition.
1. Air cleaner plugged or damaged.
2. Defective spark plug(s).
3. Fuel pressure incorrect.
4. Fuel selector in wrong position.
1. Controller wired incorrectly
2. Defective control board.
1. Main line circuit breaker is in the OFF (or
OPEN) position.
2. Generator internal failure.
1. Main line circuit breaker is in the OFF (or
OPEN) position.
2. Defective transfer switch coil.
3. Defective transfer relay.
4. Transfer relay circuit open.
5. Defective control logic board.
1. Engine overfilled with oil.
2. Engine breather defective.
3. Improper type or viscosity of oil.
4. Damaged gasket, seal or hose.
Correction
1. Correct short circuit condition by
replacing 7.5 Amp fuse in generator
control panel.
2. Tighten, clean or replace as necessary.*
3. *See #2.
4. *See #2.
5. Charge or replace battery.
6. Set auxiliary shutdown switch to
CLOSED (I) position and clear the alarm.
1. Replenish fuel / Turn on fuel valve.
2. *
3. Clean, re-gap or replace plug(s).
4. Reset valve clearance.
5. Install recommended cold weather kit.
1. Check / replace air cleaner.
2. Clean, re-gap or replace plug(s).
3. Confirm fuel pressure to regulator is 10–
12 in. water column (19-22 mm mercury)
for LP, and 5–7 in. water column (9-13
mm mercury) for natural gas.
4. Turn fuel conversion valve to correct
position.
1. Repair wiring.*
2. Replace control panel*
1. Reset circuit breaker to ON (or
CLOSED).
2. *
1. Reset circuit breaker to ON (or
CLOSED).
2. *
3. *
4. *
5. *
1. Adjust oil to proper level.
2. *
3. See Engine Oil Requirements.
4. Check for oil leaks.
Troubleshooting
25