Sullair 375H - Page 45

39
375 Caterpillar Standard and Aftercooled/Filtered Operator’s Manual and Parts List
MAINTENANCE
ENGINE DOES NOT CRANK OR CRANKS BUT DOES NOT START
SYMPTOM PROBABLE CAUSE REMEDY
SSAM FLASH CODE:FOUR FLASHES
Did not start compressor within the 30
seconds from turning the ignition switch to
the ON position
After turning the ignition switch to the ON
position, press the switch to the START
position within 30 seconds
Low battery voltage Check the battery cables and tighten if
necessary
Recharge or replace battery if necessary
No fuel Refuel
Water or dirt in the fuel and/or lter Drain water from the fuel/water
separators on the fuel lters. Siphon
water from the fuel tank and clean the
tank if necessary
Plugged air lter Clean and replace if necessary
Plugged fuel lter Replace the fuel lter
Starter solenoid relay does not engage Check wiring and tighten all connectors
Replace relay
No input frequency from alternator Check alternator “W” terminal (7.5 ± 2.50
VAC greater than 300 HZ)
SSAM FLASH CODE: FIVE FLASHES
No fuel Check fuel level and ll tank if empty
Defective fuel switch Replace switch
COMPRESSOR SHUTS DOWN
SYMPTOM PROBABLE CAUSE REMEDY
NO FLASH CODE:
Blown fuse in wiring harness Remove/inspect fuse and 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 required
Faulty SSAM module Replace the SSAM module
SSAM FLASH CODE: ONE FLASH
Compressor temperature switch is open Check wiring connection to switch and
tighten as required
Check switch continuity when cool and
replace if necessary
Cooling air ow is insufcient Clean the cooler and check for proper
ventilation
Low compressor receiver tank uid level Add uid as required
Clogged compressor uid lter Change the lter element
Faulty thermostat Change the thermostat element
Loose or broken fan belt Check the fan belt and tighten or replace
if necessary
Plugged uid cooler tube (internal) Replace the cooler