TM 9-4120-398-14
Section II. DIRECT SUPPORT TROUBLESHOOTING
5-2. USE OF TROUBLESHOOTING TABLE
a. The troubleshooting table (Table 5-1) lists the most common malfunctions which you may find dining the operation
or maintenance of the air conditioner. You should perform the test/inspections and corrective actions in the order listed.
b. For a SpeCific malfunction, perform the troubleshooting procedures listed in Table 4-2 before performing the
procedures listed in table 5-1.
c. This manual cannot list all malfunctions which may occur. However, all tests or inspections and corrective actions are
listed for most common malfunctions.
d. If a malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
Disconnect power from the air conditioner before doing any maintenance work to the electrical system.
Death or serious injury may result if personnel fail to observe safety precautions. Use great care to
avoid contact with liquid refrigerant or refrigerant gas being discharged under pressure. Sudden and
irreversible tissue damage can result from freezing. Wear thermal protective gloves and a face
protector or goggles in any situation where skin-eye contact is possible.
Prevent contact of refrigerant gas with flame or hot surfaces. Heat causes refrigerant to break down
and form carbonyl chloride (phosgene), a highly poisonous and corrosive gas.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
COMPRESSOR WILL NOT START.
Inspect and check compressor for burnout. (See Paragraph 5-23.)
Replace burned out compressor,
