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Condenser Coil - TM-5-4120-337-140053
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TM-5-4120-337-14 Air Conditioner Vertical: Compact Self-Contained Air Cooled Electrical Motor Driven Manual
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Table 5-1. Troubleshooting - TM-5-4120-337-140055
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE INSTRUCTIONS
Section I. REPAIR PARTS, SPECIAL TOOLS, AND EQUIPMENT
5-3. Maintenance Repair Parts
5-1. Tools and Equipment
Repair  parts  and  equipment  are  listed  and
No tools and equipment are issued to direct and
i l l u s t r a t e d in the repair parts and special tools list
general support maintenance for use in main-
covering direct and general support maintenance
tenance of the air conditioner.
for this air conditioner.
5-2. Special Tools and Equipment
No special tools or equipment are required.
Section
II.
TROUBLESHOOTING
5-4. General
the
tests/inspections
and
corrective
actions
in
the
order listed.
This section contains troubleshooting for locating
a n d correcting most of the operating troubles which
5-5. Malfunctions Not Listed
may develop in the air conditioner. Malfunctions
This manual cannot
list all the malfunctions that
which may occur are listed in table 5-1. Each
may occur nor all
the tests or inspections and
malfunction for an individual component, unit, or
c o r r e c t i v e actions. If
a malfunction is not listed in
s y s t e m is followed by a list of tests or inspections
table 5-1 or is not
corrected by listed corrective
which wilt help you to determine probable causes
actions. notify your
supervisor.
a n d corrective actions to take. You should perform
Table 5-1. Troubleshooting
Corrective Action
Malfunction
Probable Cause
1. Fan Motor runs at low speed only.
a. R e p l a c e f a n s p e e d c o n t r o l p r e s s u r e
a. F a l l s p e e d c o n t r o l p r e s s u r e s w i t c h
switch
defective.
will  not
start.
Fan
a. R e p l a c e  c o m p r e s s o r  ( p a r a  5 - 2 2 ) .
a. D e f e c t i v e  c o m p r e s s o r .
b. R e p l a c e h i g h o r l o w p r e s s u r e c u t -
Motor runs correctly.
b. Defective
high
or
low
pressure
output.
c. R e p l a c e c o m p r e s s o r ( p a r a 5 - 2 2 ) .
c. D e f e c t i v e c o m p r e s s o r t h e r m a l
overload.
d. C h a r g e t h e a i r c o n d i t i o n e r w i t h t h e
d. E x t r e m e l y l o w r e f r i g e r a n t c h a r g e .
correct amount of refrigerant (para
3. Comperssor starts but cycles on
a. C h a r g e t h e a i r c o n d i t i o n e r w i t h t h e
a. Excessive
refrigerant
charge.
thermal overload.
Fan motor runs
correct amount of refrigerant (para
correctly.
b. A i r o r o t h e r n o n - c o n d e n s i b l e s i n
b. E v a c u a t e  s y s t e m  a n d  r e - c h a r g e
with  the  correct  amount  of
refrigeration system.
refrigerant (para 5-8).
c. Compressor
by-pass  solenoid  valve
c. R e p l a c e  d e f e c t i v e  b y - p a s s
will
not
close
to
stop
refrigerant
flow  in  cooling  mode.
d. Fluid
pressure
regulator
set
too
d. Lower setting of fluid pressure
high or defective.
regulator to not greater than 58
psig.  R e p l a c e  d e f e c t i v e  f l u i d
pressure regulator (para 5-19).
e. D e f e c t i v e
e. R e p l a c e c o m p r e s s o r ( p a r a 5 - 2 2 ) .

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