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Problem
Excessive oil consumption
Batteries will not charge
Entire electrical system
does not function
Generator overheating
Abnormal generator noises
Thermostat not functioning
No heat
Owner's Manual for Indirect Fired Heater
Cause
Insufficient crankcase oil viscosity.
Excessive crankcase oil.
External oil leak(s).
Restricted crankcase vent tube.
Excessive oil pressure.
Worn, broken, or unseated oil control
rings.
Scored cylinder liners or pistons.
Worn valve guides or stems.
Faulty turbocharger.
Front and/or rear crankshaft oil seal faulty.
Piston ring gaps not staggered.
Insufficient piston ring tension.
Piston rings sticking in ring grooves.
Piston ring grooves excessively worn.
Loose or corroded connections.
Sulfated or worn-out batteries.
Stretched belt or faulty belt tensioner.
Faulty battery connection.
Sulfated or worn-out batteries.
Blown fuse.
Overloaded generator.
Clogged ventilation screens.
High altitude.
Insufficient air circulation.
Unbalanced load.
Faulty bearing.
Loose or misaligned coupling.
Belt slap or loose guards.
Incorrect wiring.
Insufficient supply voltage.
Incorrect sensor operation.
Display shows fault code.
Burner malfunction.
Solution
Drain crankcase and refill with correct
viscosity oil. See
Draining and Refill-
ing the
Oil.
Drain oil until oil level is correct. See
Draining and Refilling the
Determine source of oil leak(s) and
repair as required.
Clean vent tube, verify that crankcase
oil level is correct.
Contact a GMASD.
Clean and tighten connections.
Replace batteries. See
Battery Instal-
lation and
Replacement.
Adjust belt tension or replace belts.
Clean and tighten connections.
Replace batteries. See
Battery Instal-
lation and
Replacement.
Replace fuse.
Reduce load.
Remove debris and clean air pas-
sages.
Reduce load or improve ventilation.
Contact a GMASD.
Contact a GMASD.
Contact a GMASD.
See thermostat manual, or contact a
GMASD.
Contact a GMASD.
Troubleshooting
Oil.
29
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