AC DOES NOT COOL OR COOLS INADEQUATELY - continued

DRAFT

TB 9-2320-364-13&P-1

AC DOES NOT COOL OR COOLS INADEQUATELY - Continued

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WARNING

16.

KNOWN INFO

Read WARNING on

TEST OPTIONS

Power to AC system OK.

page 0015-25.

AC heater/evaporator blower OK.

Pressure test.

AC control circuit OK (except for temperature

Does AC test set recovery/

AC test set manifold gage.

control and low pressure switches).

recycling manifold gages

Low pressure switch OK.

REASON FOR QUESTION

indicate high system high-

No AC condenser dryer desiccant

contaminant in AC refrigerant system.

To isolate system fault.

side pressure?

No AC refrigerant oil contaminant in AC

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refrigerant system.

AC system charge is not low.

No AC system leaks.

Temperature control switch OK.

No air or other contaminant in AC refrigerant

system.

Go to Step 19 of this

fault.

AC compressor OK.

No moisture in AC refrigerant system.

AC condenser core OK.

YES

AC system not overcharged.

POSSIBLE PROBLEMS

Restricted AC hose.

AC expansion valve faulty.

AC condenser dryer faulty.

AC evaporator core faulty.

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0015-24