DRAFT
TB 9-2320-364-13&P-1
AC DOES NOT COOL OR COOLS INADEQUATELY - Continued
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WARNING
5.
KNOWN INFO
TEST OPTIONS
Read WARNING on
Power to AC system OK.
Pressure test.
AC heater/evaporator blower OK.
AC test set manifold gages.
AC control circuit OK (except for temperature
REASON FOR QUESTION
control and low pressure switches).
Does AC test set recovery/
Low pressure switch OK.
recycling manifold gage
To isolate system fault.
No AC condenser dryer desiccant
indicate normal system low-
contaminant in AC refrigerant system.
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side pressure?
No AC refrigerant oil contaminant in AC
refrigerant system.
AC system charge is not low.
No AC system leaks.
POSSIBLE PROBLEMS
Go to Step 10 of this
Restricted AC hoses.
NO
fault.
AC compressor faulty.
Temperature control switch faulty.
AC expansion valve faulty.
YES
Moisture in AC refrigerant system.
Air or other contaminant in AC refrigerant
system.
AC condenser core faulty.
AC system overcharged.
AC condenser dryer faulty.
AC evaporator core faulty.
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0015-10