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TROUBLESHOOTING
Section 5 - Troubleshooting
CarrierAir-cooled 7 kW, 12 kW and 15 kW Generators
5.1 TROUBLESHOOTING GUIDE
PROBLEM CAUSE CORRECTION
The engine will not crank. 1. Fuse blown. 1.
2. 2.
3. 3.
4. 4. *
5. 5.
Loose, corroded or defective
battery cables.
Defective starter contactor. (7 kW)
Defective starter motor.
Dead Battery.
Replace 15A fuse in generator
control panel.
Tighten, clean or replace
as necessary.
Charge or replace battery.
The engine cranks but
will not start.
1. Out of fuel.
2. Defective fuel solenoid (FS).
3. Open #14 wire from
engine control board.
4. Defective spark plug(s).
5. Valve lash out of adjustment.
1. Replenish fuel.
2. *
3. *
4. Clean, re-gap or replace plug(s).
5. *
The engine starts hard
and runs rough.
1. Air cleaner plugged
or damaged.
2. Defective spark plug(s).
3. Fuel Regulator not set.
4. Fuel Pressure incorrect.
1. Check, replace air cleaner.
2.
3.
4.
Clean, re-gap or replace plug(s).
Set Fuel Regulator.
Confirm fuel pressure to regulator
is 11-14" water column (0.4-0.5 psi)
for LP, and 5-7" water colum (0.18-
0.25 psi) for natural gas.
The Auto/Off/Manual switch
is set to OFF, but the engine
continues to run.
1. Defective switch.
2. Auto/Off/Manual switch
wired incorrectly.
3. Defective control board.
1.
2.
3.
There is no AC output from
the generator.
1. Main line circuit breaker open.
2. Generator internal failure.
1. Reset circuit breaker
to ON (or closed).
2. *
There is no transfer to
standby after utility
source failure.
1. Defective transfer switch coil. 1. *
2. Defective transfer relay. 2. *
3. Transfer relay circuit open. 3. *
4. Defective control logic board. 4. *
Unit consumes large Break-in procedure *
amounts of oil. not followed (see Section 2.1).
*Contact the nearest Carrier Dealer for assistance.
1 8 Carrier