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8-9. Leakage/Clogging of Refrigerating Cycle Circuit
List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle
or Oil Circuit Part
(MMY-MAP0806 , 1006 , 1206 , 14B6
Clogging
Part
Outdoor PMV1
Check valve in discharge pipe
convergent section
Check valve in discharge pipe
Check valve in oil-equalization circuit
Capillary
Strainer
S
V
3
A
v
a
v l
e
S
V
3
B
v
a
v l
e
S
V
3
C
v
a
v l
e
SV3D valve
SV3D valve circuit capillary
Strainer
Reducer
O
l i
e r
u t
n r
d
s i
r t
b i
t u
r o
S
V
3
C
b
y
p
a
s s
c
a
i p
a l l
y r
Leakage
Part
Outdoor PMV1
Check valve in discharge pipe
c
o
n
v
e
g r
e
t n
s
e
t c
o i
n
Check valve in discharge pipe
Check valve in oil-equalization circuit
S
V
3
A
v
a
v l
e
S
V
3
C
v
a
v l
e
Note: "XX" represents sub-code
∗
)
Location of
Unit generating
problem
check code
(see next page)
Corresponding unit
A
Corresponding unit
B
C
Corresponding unit
Corresponding unit
D
E
O
h t
r e
c
o
n
n
e
c
e t
F
C
r o
e r
s
p
o
n
d
n i
g
G
O
h t
r e
c
o
n
n
e
c
e t
Corresponding unit
H
Corresponding unit
I
J
C
r o
e r
s
p
o
n
d
n i
g
K
C
r o
e r
s
p
o
n
d
n i
g
Location of
Unit generating
problem
check code
(see next page)
Corresponding unit
Other connected unit Discharge temp. error (TD1)
A
Corresponding unit
B
Corresponding unit
C
Corresponding unit
D
E
C
r o
e r
s
p
o
n
d
n i
g
G
C
r o
e r
s
p
o
n
d
n i
g
Detected fault and check code
Activation of high-pressure protection
Activation of low-pressure protection
Discharge temp. error (TD1)
Discharge temp. error (TD2)
High-pressure protection error
High-pressure SW system error
High-pressure SW system error
Oil level detection circuit error
Oil level low detection and protection
d
u
n
t i
O
l i
e l
v
l e
o l
w
d
e
e t
t c
o i
n
a
n
d
p
u
n
t i
O
l i
e l
v
l e
o l
w
d
e
e t
t c
o i
n
a
n
d
p
d
u
n
t i
O
l i
e l
v
l e
o l
w
d
e
e t
t c
o i
n
a
n
d
p
Oil level low detection and protection H07
Oil level detection circuit error
Oil level low detection and protection
u
n
t i
O
l i
e l
v
l e
o l
w
d
e
e t
t c
o i
n
a
n
d
p
u
n
t i
O
l i
e l
v
l e
d
e
e t
t c
o i
n
i c
c r
u
t i
e
r r
Detected fault and check code
Outdoor liquid backflow error
Oil level low detection and protection
Discharge temp. error (TD2)
Oil level low detection and protection
Compressor breakdown
Compressor error (lockup)
Oil level low detection and protection
Compressor breakdown
Compressor error (lockup)
Oil level low detection and protection H07
u
n
t i
O
l i
e l
v
l e
o l
w
d
e
e t
t c
o i
n
a
n
d
p
u
n
t i
O
l i
e l
v
l e
o l
w
d
e
e t
t c
o i
n
a
n
d
p
− 228 −
Symptom
P20
Rise of pressure
H06
Fall of pressure
P03
Rise of discharge temp.
P17
(compressor 1)
Rise of discharge temp.
(compressor 2)
P20
Abnormal rise of pressure
P04-XX
P04-XX Abnormal rise of pressure
H16-XX
Oil circuit error or oil level low
H07
o r
e t
t c
o i
n
H
0
7
O
l i
e l
v
l e
o l
w
o r
e t
t c
o i
n
H
0
7
O
l i
e l
v
l e
o l
w
o r
e t
t c
o i
n
H
0
7
O
l i
e l
v
l e
o l
w
Oil level low
H16-05
Oil circuit error
H07
Oil level low
Oil level low
o r
e t
t c
o i
n
H
0
7
O
l i
e l
v
l e
o l
w
r o
H
1
6
0 -
4
O
l i
i c
c r
u
t i
e
r r
r o
Symptom
P13
Refrigerant entrapment
H07
P03
Rise of discharge temp.
P17
(compressor 1)
Rise of discharge temp.
(compressor 2)
H07
Refrigerant entrapment
H01-XX
H02-XX
H07
Refrigerant entrapment
H01-XX
H02-XX
Excessive amount of oil
(Leaking side)
Insufficient amount of oil
(Normal side)
o r
e t
t c
o i
n
H
0
7
O
l i
e l
v
l e
o l
w
o r
e t
t c
o i
n
H
0
7
O
l i
e l
v
l e
o l
w
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Troubleshooting
