TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 8. Air Conditioning System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Perform Refrigerant Leakage Test (WP 1. Recover refrigerant (WP 0191 00) and
Temperature of Air Flow is
1.
0018 00) to determine location of leak.
repair leaks.
Partially Cool - Continued.
2. If a large amount of refrigerant was
lost, perform Refrigerant Compressor
Oil Check (WP 0018 00).
3. Evacuate system and re-charge system
with correct amount of refrigerant (WP
0191 00).
4. After system is charged, operate for a
minimum of 10 minutes (TM 5-3805-
290-10) and perform Performance
Checks for AC System (WP 0018 00) to
verify correct operation of AC system.
3. There is air is in system.
Reclaim, evacuate, and recharge AC
system (WP 0191 00).
N OT E
Restriction in high pressure liquid line can cause refrigerant to be
removed from evaporator at a faster rate. Restriction can cause
evaporator to be low on refrigerant from inline dryer. Clogged filters
or a failure of blower motor can cause possible restrictions to air
flow.
Restrictions of refrigerant flow are identified by frost or cold spots
in line. Also, restrictions of refrigerant flow are identified by frost or
cold spots in inline dryer.
Cap all open lines and fittings during repairs.
Ambient temperature is above 70F (21C).
4. Check for restriction at inline dryer
1. If restriction is found, replace inline
dryer (WP 0194 00).
2. Recover refrigerant, evacuate, and
charge system with correct amount of
refrigerant. Measure refrigerant by
weight (WP 0191 00).
3. After system is charged, operate for a
minimum of 10 minutes (TM 5-3805-
290-10) and perform Performance
Checks for Air Conditioning System
(WP 0018 00) to verify correct
operation of AC system.
4. If problem still exists, go to Test 5.
0008 00-92
