DIRECT SUPPORT MAINTENANCE AIR CONDITIONER, HORIZONTAL, COMPACT

TM 9-4120-428-14

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DIRECT SUPPORT MAINTENANCE

AIR CONDITIONER, HORIZONTAL, COMPACT

(NSN 4120-01-502-1319)

TROUBLESHOOTING INDEX

GENERAL

For use of the authorized common tools and equipment, refer to the Modified Table of Organization and Equipment (MTOE)

applicable to your unit.

Test, Measurement, and Diagnostic Equipment (TMDE) and all support equipment include electrical test equipment, standard

pressure and vacuum gauges, vacuum pumps, and charging manifolds and are found as standard equipment in any direct

support refrigeration shop.

Repair parts are listed and illustrated in TM9-4120-428-24P. No special tools are required for direct support maintenance of

the air conditioner.

USE OF TROUBLESHOOTING TABLE

The Troubleshooting Table lists the most common malfunctions found during operation or maintenance of the air

conditioner. Tests, inspections, and corrective actions should be performed in the order listed.

For a specific malfunction, refer to the Symptom Index before performing the procedures listed in the Troubleshooting Table.

This manual cannot list all malfunctions that may occur. Tests, inspections, and corrective actions are listed for the most

common malfunctions only. If a malfunction is not listed, notify your supervisor.

TROUBLESHOOTING INDEX

Symptom Index

TROUBLE

MALFUNCTION NO.

AIR CONDITIONER

Insufficient Cooling .......................................................................................................... 3

Noisy During Operation ..................................................................................................... 7

Operates Continuously on Cooling Cycle ................................................................................. 5

COMPRESSOR

Will Not Start .................................................................................................................. 1

Short Cycle ...................................................................................................................... 2

REFRIGERANT SYSTEM

Contamination .................................................................................................................. 6

Continuously Losing Refrigerant ............................................................................................. 4

END OF WORK PACKAGE

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