AC DOES NOT COOL OR COOLS INADEQUATELY - continued

DRAFT

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

AC DOES NOT COOL OR COOLS INADEQUATELY - Continued

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

WARNING

13.

KNOWN INFO

Read WARNING on

Power to AC system OK.

page 0015-21.

AC heater/evaporator blower OK.

AC control circuit OK (except for temperature

control and low pressure switches).

Is AC condenser output hose

Low pressure switch OK.

hot?

No AC condenser dryer desiccant

contaminant in AC refrigerant system.

TEST OPTIONS

No AC refrigerant oil contaminant in AC

refrigerant system.

Visual inspection.

AC system charge is not low.

REASON FOR QUESTION

No AC system leaks.

Temperature control switch OK.

If AC condenser output hose

Recover R-134a

is hot, AC condenser core

No air or other contaminant in AC refrigerant

refrigerant (WP 0053).

is faulty. If not, AC system

system.

Replace AC

may be overcharged.

AC condenser dryer OK.

condenser dryer

(WP 0024). Evacuate

AC evaporator core OK.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

and charge system

No restricted AC hoses.

(WP 0053). Verify

AC compressor OK.

repair, go to Step 22

YES

AC expansion valve OK.

of this fault.

No moisture is AC refrigerant system.

POSSIBLE PROBLEMS

Recover R-134a refrigerant

AC condenser core faulty.

(WP 0053). Replace AC

AC system overcharged.

condenser core (WP 0023)

and AC condenser dryer

(WP 0024). Evacuate and

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

charge system (WP 0053).

Verify repair, go to Step 22 of

this fault.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

0015-20