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Troubleshooting
SiENBE04-512A
106
Service Diagnosis
4.5
Thermistor or Related Abnormality (Indoor Unit)
Remote Control
Display
C4, C9
Method of
Malfunction
Detection
The temperatures detected by the thermistors are used to determine thermistor errors.
Malfunction
Decision
Conditions
When the thermistor input is more than 4.96 V or less than 0.04 V during compressor
operation
∗
.
∗
(reference)
When above about 212°C (less than 120 ohms) or below about -50°C (more than 1,860 kohms).
Note:
The values vary slightly in some models.
Supposed
Causes
Faulty connector connection
Faulty thermistor
Faulty PCB
Troubleshooting
Check No.6
Refer to P.132
C4
: Heat exchanger thermistor
C9
: Room temperature thermistor
Check the connector connection.
YE
S
Correct the connection.
Repl
a
ce the thermi
s
tor.
(Repl
a
ce the indoor
u
nit PCB.)
Repl
a
ce the indoor
u
nit PCB.
I
s
it norm
a
l?
I
s
it norm
a
l?
(R140
3
)
NO
Check No. 6
Thermi
s
tor re
s
i
s
t
a
nce check
YE
S
NO
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.
SiENBE04-512A.book Page 106 Friday, October 5, 2007 1:49 PM
Содержание ARKH20CVMB7
Страница 1: ...SiENBE04 512A Service Manual Inverter Pair Wall Mounted Type C Series D Series ...
Страница 17: ...List of Functions SiENBE04 512A 8 List of Functions ...
Страница 18: ...SiENBE04 512A Specifications 9 Part 2 Specifications 1 Specifications 10 1 1 Cooling Only 10 1 2 Heat Pump 16 ...
Страница 37: ...Specifications SiENBE04 512A 28 Specifications ...
Страница 73: ...Control Specification SiENBE04 512A 64 Function and Control ...
Страница 103: ...Instruction SiENBE04 512A 94 System Configuration ...
Страница 147: ...Check SiENBE04 512A 138 Service Diagnosis ...
Страница 225: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 512A 216 Removal Procedure ...
Страница 226: ...SiENBE04 512A Others 217 Part 8 Others 1 Others 218 1 1 Test Run from the Remote Control 218 1 2 Jumper Settings 219 ...
Страница 229: ...Others SiENBE04 512A 220 Others ...
Страница 241: ...Wiring Diagrams SiENBE04 512A 232 Appendix ...
Страница 245: ...SiENBE04 512A iv Index wiring diagrams 229 ...