Section 5
MAINTENANCE
34
5.10 TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM PROBABLE CAUSE REMEDY
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 filters
Siphon water from fuel tank and clean fuel tank it.
necessary .
COMPRESSOR WILL NOT For compressors with idle warm--- u p controls,
BUILD UP FULL DISCHARGE switch toggle to “run” for full operation.
PRESSURE
Air Demand Is Too Great. Check service lines for leaks or open valves.
Dirty Air Filter Check the filter indicator and change element
if required.
Defective Pressure Regulator Check diaphragm and replace if necessary
(kit available).
Defective Idle Warm--- up C ontrol Replace control.
IMPROPER UNLOADING WITH AN
EXCESSIVE PRESSURE BUILD--- UP
CAUSING PRESSURE RELIEF VAL VE
TO OPEN Pressure Regulating Valve Is Set Readjust.
Too H ig h
Leak In Control System Causing Check control lines.
Loss Of Pressure Signal
Defectiv e pressure regulating valve;
repair valve (kit available).
Inlet Valve Jammed Free or replace valve.
FLASH CODE: FIVE FLASHES (option) No/low fuel Check fuel level & add fuel if necessary.
IMPROPER UNLOADING WITH AN
EXCESSIVE PRESSURE BUILD--- UP
CAUSING PRESSURE RELIEF VAL VE
TO OPEN (continued) Restriction In The Control System Check all control lines and components.
Ice and/or other contaminants could cause
.
Defective Pressure Relief Valve Replace pressure relief valve.
Opening At Too Low Of Pressure
Defective Pressure Regulator Check diaphragm and replace if necessary
(kit available).
INSUFFICIENT AIR DELIVERY Engage Idle Warm---up Control In “Run”
Position For Full Compressor Operation.
Plugged Air Filter Replace.
Plugged Air/Fluid Separator Replace separator element and also change
compressor fluid and fluid filter at this time.
Defectiv e Pressure Regulator Adjust or repair.
Engine Speed Too Low Readjust engine speed.
Defective Idle Warm--- up C ontrol Replace control.
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