Air conditioning and heating system

TM 1-1510-223-MTF

PROCEDURE

TROUBLESHOOTING

REFERENCE

CLIMB (CONT)

*21. Air conditioning and heating system -

Check as follows:

a. CABIN AIR MODE SELECT switch-

MAN COOL or MAN HEAT.

b. CABIN AIR MANUAL TEMP control

switch - Hold to INCREASE

position for one minute. Observe

an increase in cabin temperature.

c. CABIN AIR MANUAL TEMP control

switch - Hold to DECREASE

position for one minute. Observe a

decrease in cabin tem-perature.

d. CABIN AIR MODE SELECT

switch - AUTO.

CABIN AIR TEMP CONTROL

rheostat - Rotate to full INCR posi-

tion. Observe an increase in cabin

temperature.

f. CABIN AIR TEMP control rheostat -

Rotate

fully

counterclock-wise.

Observe an decrease in cabin

temperature.

NOTE

Air conditioning will come on if cabin temperature

is above 60 to 650F.

Ensure that the temperature control rheostat is set

to the mid position (approximately 75 cabin

temperature).

*22.

Air conditioning cold operation - Check as

follows:

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