AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM DUCTS DURING AC OPERATIONS (Cont)

DRAFT

TB 9-2320-279-13-1

AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM

DUCTS DURING AC OPERATIONS - Continued

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27.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

page 0012-55/

Verify repair.

Blower operates.

(0012-56 blank).

REASON FOR QUESTION

AC condenser core not blocked or damaged.

AC compressor belts OK.

If AC system does not

Does AC system provide cold

provide cold air, fault has

AC heater/evaporator core not blocked or

not been corrected.

air through ducts?

damaged.

AC temperature control switch temperature

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probe OK.

Heater cable OK.

AC cable OK.

Defrost cable OK.

AC compressor clutch OK.

AC harness wire 1154 OK.

Fault not corrected,

Low pressure switch OK.

notify Supervisor.

AC harness wire 1156 OK.

AC harness wire 1158 OK.

High pressure switch OK.

YES

AC condenser motor solenoid OK.

AC condenser motor power wire OK.

AC condenser motor ground wire OK.

AC condenser motor OK.

Fault corrected.

AC condenser assembly harness black wire

OK.

AC harness wire 1155 OK.

AC condenser assembly harness green wire

OK.

AC condenser motor solenoid ground wire

OK.

Fan control switch OK.

Wire 1156 OK.

AC temperature control switch OK.

POSSIBLE PROBLEMS

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None

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0012-54