Sullair 125 - Section 7 ILLUSTRATIONS AND PARTS; 7.1 PROCEDURE FOR ORDERING PARTS

Section 5
MAINTENANCE
33
5.13 TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM PROBABLE CAUSE REMEDY
FLASH CODE:
ONE FLASH
Faulty Compressor Temperature
Switch
Check wiring connection to switch and tighten as
required.
Check switch continuity when cool and replace if
necessary.
Cooling Air Flow is Insufficient
Clean cooler and check for proper ventilation.
Low Compressor Fluid Sump Level
Add fluid as required.
Clogged Compressor Fluid Filter
Change filter element.
Faulty Thermostat
Change the thermostat element.
Loose or Broken Fan Belt
Check fan belt and tighten/replace as necessary.
Plugged Fluid Cooler Tube (Internal)
Replace cooler.
FLASH CODE:
TWO FLASHES
Faulty Engine Coolant Temperature
Switch
Check wiring connection to switch and tighten as
necessary.
Check switch continuity to ground when cool and
replace if necessary.
Cooling Air Flow is Insufficient Clean cooler and check for proper ventilation.
Loose or Broken Fan Belt Check fan belt and tighten/replace as necessary.
Engine Problems May Have
Developed
Refer to engine operators manual.
No Engine Coolant Check engine coolant level and fill with proper
water/glycol mixture as required.
FLASH CODE:
THREE FLASHES
Faulty Engine Oil Pressure Switch Check wiring connection to switch and tighten as
required.
Install gauge in parallel with switch. Replace switch
if pressure exceeds 15 psig and switch stays open.
If pressure is less than 15 psig, refer to Engine
Operator’s Manual.
FLASH CODE:
FOUR FLASHES
No/Low Fuel Check fuel level and add fuel if necessary.
Plugged Fuel Filter Replace and clean as required.
Plugged Air Filter Replace and clean as required.
Water/Dirt in Fuel and/or Fuel Filter Drain water from fuel water separators on fuel fil-
ters. Siphon water from fuel tank and clean fuel
tank if necessary.
Continued...