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TROUBLESHOOTING
TROUBLESHOOTING
7.1
Troubleshooting
The information contained in the Troubleshooting chart has been compiled from field
report data and factory experience. It contains symptoms and usual causes for the
described problems. However, DO NOT, assume that these are the only problems that
may occur. All available data concerning the trouble should be systematically analyzed
before undertaking any repairs or component replacement procedures.
A detailed visual inspection is worth performing for almost all problems. Doing so may
prevent damage to the compressor. Always remember to:
1. Check for loose wiring.
2. Check for damaged piping.
3. Check for parts damaged by heat or an electrical short circuit, usually noticeable by
discoloration or a burnt odor.
Should your problem persist after making the recommended check, consult your nearest
®
Vanair
representative or Vanair Manufacturing, Inc.
7.2 Troubleshooting Guide
SYMPTOM
COMPRESSOR SHUTS
DOWN WITH AIR
DEMAND PRESENT
COMPRESSOR WILL NOT
BUILD UP FULL
DISCHARGE
SECTION 7:
PROBABLE CAUSE
Compressor Discharge
Temperature Switch is
Open
Circuit Breaker Tripped on
Instrument Panel
Air Demand is Too Great
Section 7 - Pg 01
REMEDY
Cooling air flow is insufficient; clean cooler and
check for proper ventilation.
Low fluid sump level; add fluid.
Dirty compressor fluid filter; change element.
Electric fan is not functioning.
Defective discharge temperature switch; check for a
short or open circuit to the engine fuel solenoid.
Should this check out normal, it could be possible
that the temperature switch itself is defective.
Reset circuit breaker and check for cause of
overload.
Check service lines for leaks or open valves.
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