Sullair 375H - 5.9 Trouble Shooting

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375 Caterpillar Standard and Aftercooled/Filtered Operator’s Manual and Parts List
SECTION 5
5.9 TROUBLE SHOOTING
The following Trouble Shooting chart is based upon data
obtained from factory tests and information from the eld.
It lists symptoms, probable causes and remedies. This
chart does not cover all possible malfunctions or cases of
abnormal operation. Before undertaking repairs or
replacement actions, analyze all of the available data.
Performing a detailed visual inspection in all cases can
prevent additional damage or abnormal operation.
Always:
Check for loose wiring or connections. 1.
Check for damaged piping. 2.
Check for heat damage to parts (electrical short 3.
circuits can cause heat damage) which can appear as
discolorations or the presence of a burnt odor.
If the troubleshooting remedy does not work, or the
malfunction is not covered in this Trouble Shooting chart,
contact your nearest Sullair representative or Sullair for
technical assistance.
ENGINE DOES NOT CRANK OR CRANKS BUT DOES NOT START
SYMPTOM PROBABLE CAUSE REMEDY
NO SSAM FLASH CODE Low voltage or battery disconnected Check battery cables and tighten if loose
Check ground wire for proper attachment
to frame. Tighten if required.
Recharge or replace battery if required.
Blown fuse in wiring harness Remove and inspect fuse. Replace if
necessary.
Instrument panel connectors loose or
disconnected.
Check instrument panel connectors and
reattach if required
Check instrument panel wires for broken
connections or corrosion. Clean and/or
replace if damaged.
Faulty SSAM module Replace the module
SSAM FLASH CODE: ONE FLASH Compressor temperature switch is open Check wiring connection to the switch and
tighten if loose
Check switch continuity to ground and
replace if necessary
If the compressor feels hot see
COMPRESSOR OVERHEATING trouble
shooting procedure
SSAM FLASH CODE: TWO FLASHES Engine coolant temperature switch is
open
Check wiring connection to the switch and
tighten if necessary
Check switch continuity to ground and
replace if necessary
Cooling air ow is insufcient Clean cooler and check for proper
ventilation
Loose or broken fan belt Check fan belt and tighten or replace if
necessary
Engine problems might be present Refer to the Engine Operator’s Manual
No engine coolant Fill with proper water/glycol mixture as
required
SSAM FLASH CODE:THREE FLASHES Engine oil pressure switch is open Check wiring conne ction to switch and
tighten if necessary
Install gauge in parallel with the switch.
Replace the switch if the pressure
exceeds 15 psig and stays open. If the
pressure is less than 15 psig, refer to the
Engine Operator’s Manual.