Samsung AVXCSH023/032/040CE, Service Manual

Page: 180 / 363

Troubleshooting
Troubleshooting
Err
or mode
C
ause
Measur
es to tak
e
P
roduc
t's oper
a
tion c
ondition during err
or(Main par
ts sta
tus)
Diagnosis method
F
requenc
y
O
utdoor unit sta
tus
Err
or oc
curr
ed
indoor unit
.
O
ther indoor units
403
All the operating indoor machines do not r
each -4°C f
or mor
e than fiv
e minut
es
• Check if the indoor FAN/MOTOR operates normally. • Check if the indoor EEV operates normally. • Check the indoor heat exchanger's IN/OUT sensor. • Check for clogging in the suction area of the indoor machine.
1
Operation off
Operation
off
Operation off
page 4-121
407
C
ompr
essor do
wn b
y high pr
essur
e sensor pr
ot
ec
tion c
o
ntr
ol
• Check if a ser
vic
e valv
e is open
•
C
ompar
e the values bet
w
een manif
old gauge and S-net: check if ther
e ar
e an
y pr
oblems with
high pr
essur
e sensor
• Check if indoor/out
door EE
V operat
es
• Check if ther
e is an
y clog in the piping such as filt
ers
• Check if the fan operat
es w
ell
• Check the amount of r
efrigerants (o
ve
rchar
g
ing)
1
Operation off
Operation
off
Operation off
page 4-122
410
C
ompr
essor do
wn b
y lo
w pr
essur
e sensor pr
ot
ec
tion c
o
ntr
o
l
• Check if a ser
vic
e valv
e is open
•
C
ompar
e the values bet
w
een manif
old gauge and S-net: Check if ther
e ar
e an
y pr
oblems with
high pr
essur
e sensor
• Check if indoor/out
door EE
V operat
es
• Check if ther
e is an
y clog in the piping such as filt
ers
• Check the amount of r
efrigerants (shor
tage)
1
Operation off
Operation
off
Operation off
page 4-123
416
C
ompr
essor do
wn b
y dischar
ge t
emp
.
• Check the r
esistanc
e of dischar
ge sensors
• Check if a ser
vic
e valv
e is open
•
C
ompar
e the values bet
w
een manif
old gauge and S-net: Check if ther
e ar
e an
y pr
oblems with
high pr
essur
e sensor
• Check if indoor/out
door EE
V operat
es
• Check if ther
e is an
y clog in the piping such as filt
ers
1
Operation off
Operation
off
Operation off
page 4-124
440
P
rohibit heating f
or out
door t
emperatur
e o
ver 30°
• Check if ther
e is an
y dislocation/pbm. with out
door t
emp sensor
• I
f out
door t
emp measur
ed normal
, normal operation b
y pr
ot
ec
tiv
e c
o
ntr
o
l
1
Operation off
Operation
off
Operation off
page 4-125
442
P
rohibit filling mode f
or out
door t
emperatur
e o
ver 15°
• Check if ther
e is an
y dislocation/pbm. with out
door t
emp sensor
• I
f out
door t
emp measur
ed normal
, normal operation b
y pr
ot
ec
tiv
e c
o
ntr
o
l
1
Operation off
Operation
off
Operation off
page 4-126
462
C
u
rr
ent pr
ot
ec
tion c
o
ntr
ol causes c
omp
. do
wn
• Check the c
ompr
essor input v
oltage (err
or f
or lo
w v
oltage)
• Check the o
ver
curr
e
nt option setting
1
Operation off
Operation
off
Operation off
page 4-126
463
OLP pr
ot
ec
tion c
o
ntr
ol cause c
omp
. do
wn
• S
ee if the sub valv
e is open
• Check the amount of c
oolant
• Check the OLP sensor
1
Operation off
Operation
off
Operation off
page 4-126
458 475
Elec
trical malfunc
tions of the out
door machine
• F
an stuck
• P
oor fan c
onnec
tion
• Damaged fan
1
Operation off
Operation
off
Operation off
page 4-127
702
1
st
close indoor elec
trically operat
ed valv
e
• Check the PCB c
onnec
tion of elec
trically operat
ed valv
e wir
e
• Check the sealing c
ondition of elec
trically operat
ed valv
e
• Check if ther
e is an
y ex
te
rnal rust, int
e
rnal br
eak
age/shor
t cir
cuit on the c
oil
• A
ft
er r
esetting OU (K3), r
e
-check if err
or oc
curs again
1
Normal operation
Operation
off
Normal operation
page 4-128
703
1
st
open indoor elec
trically operat
ed valv
e
• Check the PCB c
onnec
tion of elec
trically operat
ed valv
e wir
e
• Check the sealing c
ondition of elec
trically operat
ed valv
e
• Check if ther
e is an
y ex
te
rnal rust, int
e
rnal br
eak
age/shor
t cir
cuit on the c
oil
• A
ft
er r
esetting OU (K3), r
e
-check if err
or oc
curs again
1
R
e
-star
t
R
e
-star
t
Normal operation
page 4-128
■
Error display (cont.)
Samsung Electronics
4-96