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SiE12-411
Troubleshooting
Service Diagnosis
181
5.11 OL Activation (Compressor Overload)
Remote
Controller
Display
E5
Outdoor Unit LED
Display
A
5
1
4
2
1
3
4
4
1
Method of
Malfunction
Detection
A compressor overload is detected through compressor OL.
Malfunction
Decision
Conditions
"
If the compressor OL is activated twice, the system will be shut down.
"
The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
∗
The operating temperature condition is not specified.
Supposed
Causes
"
Refrigerant shortage
"
Four way valve malfunctioning
"
Outdoor unit PCB defective
"
Water mixed in the local piping
"
Electronic expansion valve defective
"
Shut-off valve defective
Troubleshooting
Check No.4
Refer to P.205
Check No.5
Refer to P.206
Check No.6
Refer to P.207
Check No.11
Refer to P.210
In
s
ert the thermi
s
tor in
po
s
ition.
Repl
a
ce the di
s
ch
a
rge pipe
thermi
s
tor.
Repl
a
ce the v
a
lve it
s
elf or
the coil.
Repl
a
ce the fo
u
r w
a
y v
a
lve
coil or the v
a
lve it
s
elf.
Repl
a
ce the o
u
tdoor
u
nit
PCB.
Refer to the refriger
a
nt line
check proced
u
re.
Repl
a
ce the o
u
tdoor
u
nit
PCB.
(R2
8
41)
Caution
Be
su
re to t
u
rn off power
s
witch
b
efore connect or di
s
connect connector,
or p
a
rt
s
d
a
m
a
ge m
a
y
b
e occ
u
rred.
Di
s
ch
a
rge pipe thermi
s
tor
di
s
connected?
YE
S
M
a
lf
u
nctioning
∗
Di
s
ch
a
rge pipe thermi
s
tor
NO
F
u
nctioning
F
u
nctioning
Check No. 11
Check the refriger
a
nt line.
M
a
lf
u
nctioning
Check No. 6
Check the thermi
s
tor
s
M
a
lf
u
nctioning
F
u
nctioning
Check No. 4
Check the electronic exp
a
ntion
v
a
lve.
M
a
lf
u
nctioning
F
u
nctioning
Check No. 5
Check the fo
u
r w
a
y v
a
lve.
∗
Refriger
a
nt
s
hort
a
ge
∗
W
a
ter mixed
∗
S
top v
a
lve defective
Summary of Contents for Super Multi NX C-Series
Page 6: ...SiE12 411 Table of Contents v Index i Drawings Flow Charts v...
Page 7: ...SiE12 411 vi Table of Contents...
Page 67: ...Specifications SiE12 411 56 Specifications...
Page 171: ...Instruction SiE12 411 160 System Configuration...
Page 225: ...Check SiE12 411 214 Service Diagnosis...
Page 295: ...SiE12 411 iv Index...