40
Installation and Maintenance
Service Manual
Analysis or processing of some of the malfunction display:
1. Compressor discharge protection
P
RVV
i
EO
e ca
XV
e
V
VKR
rtage
R
f refrigerant
EOR
c
N
age
R
f air fi
O
ter
p
RR
r
Y
enti
O
ati
R
n
R
r air f
OR
w
VKR
rt pa
VV
f
R
r c
R
n
G
en
V
er
t
K
e
V\V
te
P
K
a
V
n
R
nc
R
n
G
en
V
ing ga
V
(
VX
c
K
a
V
air
water etc.)
EOR
c
N
age
R
f capi
OO
ar
\
a
VV\
(inc
OXG
ing
¿O
ter)
O
ea
N
age in
V
i
G
e f
RX
r-wa
\
Y
a
OY
e ca
XV
e
V
inc
R
rrect
R
perati
R
n
P
a
O
f
X
ncti
R
n
R
f c
RP
pre
VVR
r
P
a
O
f
X
ncti
R
n
R
f pr
R
tecti
R
n re
O
a
\
P
a
O
f
X
ncti
R
n
R
f
G
i
V
c
K
arge
V
en
VR
r
RX
t
GRR
r te
P
perat
X
re
t
RR
K
ig
K
.
Pr
R
ce
VV
ing
P
et
KRG
refer t
R
t
K
e
P
a
O
f
X
ncti
R
n ana
O\V
i
V
in t
K
e a
ERY
e
V
ecti
R
n.
2. Low voltage overcurrent protection
P
RVV
i
EO
e ca
XV
e
S
XGG
en
G
r
R
p
R
f
VX
pp
O\
YRO
tage.
3.
Pr
R
ce
VV
ing
P
et
KRG
&K
ec
N
if c
RPPX
nicati
R
n
V
igna
O
ca
EO
e i
V
c
R
nnecte
G
re
O
ia
EO\
.
4. Sensor open or short circuit
Pr
R
ce
VV
ing
P
et
KRG
&K
ec
N
w
K
et
K
er
V
en
VR
r i
V
n
R
r
P
a
O
c
R
nnecte
G
wit
K
t
K
e c
R
rre
V
p
R
n
G
ing p
RV
iti
R
n
R
n t
K
e c
R
ntr
ROO
er an
G
if
G
a
P
age
R
f
O
ea
G
wire i
V
f
RX
n
G
.
5. Compressor over load protection
P
RVV
i
EO
e ca
XV
e
V
in
VX
fficient
R
r t
RR
PX
c
K
refrigrant
EOR
c
N
age
R
f capi
OO
ar
\
an
G
increa
V
e
R
f
VX
cti
R
n te
P
p.
i
P
pr
R
per r
X
nning
R
f
c
RP
pre
VVR
r
EX
rning in
R
r
V
t
X
c
N
R
f
E
earing
G
a
P
age
R
f
G
i
V
c
K
arge
Y
a
OY
e
P
a
O
f
X
ncti
R
n
R
f pr
R
tect
R
r.
Pr
R
ce
VV
ing
P
et
KRG
a
GMXV
t refrigerant a
PRX
nt
rep
O
ace t
K
e capi
OO
ar
\
rep
O
ace t
K
e c
RP
pre
VVR
r
XV
e
X
ni
Y
er
V
a
O
P
eter t
R
c
K
ec
N
if t
K
e
c
R
ntact
R
r
R
f c
RP
pre
VV
R
r i
V
¿
ne w
K
en it i
V
n
R
t
RY
er
K
eate
G
if n
R
t rep
O
ace t
K
e pr
R
tect
R
r.
6. System malfunction
i.e.
RY
er
OR
a
G
pr
R
tecti
R
n.W
K
en t
XE
e te
P
perat
X
re(
&K
ec
N
t
K
e te
P
perat
X
re
R
f
RX
t
GRR
r
K
eat e
[
c
K
anger w
K
en c
RRO
ing an
G
c
K
ec
N
t
K
e
te
P
perat
X
r e
R
f in
GRR
r
K
eat e
[
c
K
anger w
K
en
K
eating) i
V
t
RR
K
ig
K
pr
R
tecti
R
n wi
OO
E
e acti
Y
ate
G
.
P
RVV
i
EO
e ca
XV
e
V
O
X
t
GRR
r te
P
perat
X
re i
V
t
RR
K
ig
K
w
K
en c
RRO
ing
in
VX
f
¿
cient
RX
t
GRR
r air circ
XO
ati
R
n
refrigerant
ÀR
w
P
a
O
f
X
ncti
R
n.
p
O
ea
V
e refer t
R
t
K
e
P
a
O
f
X
ncti
R
n ana
O\V
i
V
in t
K
e pre
Y
i
RXV
V
ecti
R
n f
R
r
K
an
GO
ing
P
et
KRG
.
7. IPM module protection
Pr
R
ce
VV
ing
P
et
KRG
Once t
K
e
PRGXO
e
P
a
O
f
X
ncti
R
n
K
appen
V
if it per
V
i
V
t
V
f
R
r a
OR
ng ti
P
e an
G
can n
R
t
E
e
V
e
O
fcance
O
e
G
c
X
t
R
ff t
K
e p
R
wer
an
G
t
X
rn
R
ff t
K
e
X
nit
an
G
t
K
en re-energize t
K
e
X
nit again after a
ERX
t 10
P
in.After repeating t
K
e pr
R
ce
GX
re f
R
r
V
e
Y
er ti
P
e
V
if t
K
e
P
a
O
f
X
ncti
R
n
V
ti
OO
e
[
i
V
t
V
rep
O
ace t
K
e
PRGXO
e.