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 TM5-4120-384-14
Table
5-1.
TROUBLESHOOTING-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
(See
Step
9.
Check solenoid valves L1 and L2.
Repair
or
replace
if
defective.
INSUFFICIENT COOLING ACTION.
3.
Step
1.
Check
control
settings.
(See
Move MODE SELECTOR switch to COOL.
a.
M o v e TEMPERATURE SELECTOR switch to COOLER.
b.
If normal cooling does not resume in 15
minutes, go to Step 2.
Check air movement.
Step
2.
a.
Remove any obstructions to air flow
(evaporator and condenser sides).
b.
Remove, clean, and/or
replace
air
filter.
(See para 4-13.)
Remove, clean, and/or replace
mist
c.
(See para 4-16.)
eliminator.
Clean
evaporator
coil.
(See
d.
NOTE
Frost on the evaporator coil is usually caused
by an obstruction to air flow or dirty coils,
f i l t e r{ o r m i s t e l i m i n a t o r .
Check actuating cylinder to
make
sure
louvers
are
Step
3.
(See para 5-26.)
opening.
Replace
if
defective.
Check to make sure evaporator and condenser fans
Step
4.
(See para 4-32 and
are tight on motor shaft.
4-35.)
Tighten
if
loose.
5-7
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