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Troubleshooting
SiENBE04-512A
114
Service Diagnosis
4.12 Discharge Pipe Temperature Control
Remote Control
Display
F3
Method of
Malfunction
Detection
The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the
temperature being detected by the discharge pipe thermistor.
Malfunction
Decision
Conditions
If a stop takes place 4 times successively due to abnormal discharge pipe temperature, the
system will be shut down.
If the temperature being detected by the discharge pipe thermistor rises above
°C, the
compressor will stop. (The error is cleared when the temperature has dropped below
°C.)
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).
Supposed
Causes
Refrigerant shortage
Four way valve malfunctioning
Discharge pipe thermistor defective
(heat exchanger or outdoor air temperature thermistor defective)
Outdoor unit PCB defective
Water mixed in the local piping
Electronic expansion valve defective
Stop valve defective
Troubleshooting
Check No.4
Refer to P.130
Check No.6
Refer to P.132
Check No.11
Refer to P.135
Stop temperatures
ARK(X)S
(A)RK(X)H, R(Y)N
(1) above 45Hz (rising), above 40Hz (dropping)
110
97
85
(2) 30~45Hz (rising), 25~40Hz (dropping)
105
92
80
(3) below 30Hz (rising), below 25Hz (dropping)
99
86
74
Repl
a
ce
a
defective
thermi
s
tor.
Repl
a
ce the v
a
lve it
s
elf or
the coil.
Refer to the refriger
a
nt line
check proced
u
re.
Repl
a
ce the o
u
tdoor
u
nit
PCB.
(R2
8
46)
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.
Check No. 6
Check the thermi
s
tor
s
.
M
a
lf
u
nctioning
M
a
lf
u
nctioning
F
u
nctioning
F
u
nctioning
F
u
nctioning
C
heck No.
11
Check the refriger
a
nt line.
M
a
lf
u
nctioning
C
heck No.
4
Check the electronic exp
a
n
s
ion
v
a
lve.
Refriger
a
nt
s
hort
a
ge
Fo
u
r w
a
y v
a
lve m
a
lf
u
nctioning
W
a
ter mixed
S
top v
a
lve defective
Di
s
ch
a
rge pipe thermi
s
tor
O
u
tdoor
u
nit he
a
t exch
a
nger thermi
s
tor
O
u
tdoor temper
a
t
u
re thermi
s
tor
SiENBE04-512A.book Page 114 Friday, October 5, 2007 1:49 PM
Summary of Contents for FTKS20CVMB(9)
Page 1: ...SiENBE04 512A Service Manual Inverter Pair Wall Mounted Type C Series D Series...
Page 17: ...List of Functions SiENBE04 512A 8 List of Functions...
Page 37: ...Specifications SiENBE04 512A 28 Specifications...
Page 73: ...Control Specification SiENBE04 512A 64 Function and Control...
Page 103: ...Instruction SiENBE04 512A 94 System Configuration...
Page 147: ...Check SiENBE04 512A 138 Service Diagnosis...
Page 225: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 512A 216 Removal Procedure...
Page 229: ...Others SiENBE04 512A 220 Others...
Page 241: ...Wiring Diagrams SiENBE04 512A 232 Appendix...