DRAFT
TB 9-2320-364-13&P-1
AC DOES NOT COOL OR COOLS INADEQUATELY - Continued
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WARNING
17.
KNOWN INFO
Read WARNING on
Power to AC system OK.
AC heater/evaporator blower OK.
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AC control circuit OK (except for temperature
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Are AC hoses from AC
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control and low pressure switches).
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compressor output to AC
Low pressure switch OK.
expansion valve free from
No AC condenser dryer desiccant
contaminant in AC refrigerant system.
frost and cool spots?
TEST OPTIONS
No AC refrigerant oil contaminant in AC
Visual inspection.
refrigerant system.
AC system charge is not low.
REASON FOR QUESTION
No AC system leaks.
If frost or cool spots are
Temperature control switch OK.
forming on AC hoses, AC
Recover R-134a
No air or other contaminant in AC refrigerant
hoses are restricting
refrigerant
system.
R-134a refrigerant flow.
(WP 0053). Replace
AC compressor OK.
NO
restricted AC hose
No moisture in AC refrigerant system.
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(WP 0039). Replace
AC condenser core OK.
AC condenser dryer
AC system not overcharged.
YES
Evacuate and charge
AC evaporator core OK.
system (WP 0053).
POSSIBLE PROBLEMS
Verify repair, go to
Step 22 of this fault.
Restricted AC hose.
AC expansion valve faulty.
AC condenser dryer faulty.
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0015-26