Troubleshooting for Outdoor Unit
SiSG121917E
167
Part 6 Service Diagnosis
7.21 Output Overcurrent Detection
Error Code
L5
Outdoor Unit LED
Display
A
j
1
h
2
h
3
i
4
h
5
h
Method of Error
Detection
An output overcurrent is detected by checking the current that flows in the inverter DC section.
Error Decision
Conditions
A position signal error occurs while the compressor is running.
A rotation speed error occurs while the compressor is running.
An output overcurrent signal is fed from the output overcurrent detection circuit to the
microcomputer.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Supposed
Causes
Poor installation condition
Closed stop valve
Defective power module
Wrong internal wiring
Abnormal power supply voltage
Defective outdoor unit PCB
Defective compressor
Troubleshooting
(R24911)
Caution
N
O
YES
N
O
YES
∗
An o
u
tp
u
t o
v
erc
u
rrent may res
u
lt from
w
rong internal
w
iring. If the system is interr
u
pted
b
y an o
u
tp
u
t
o
v
erc
u
rrent after the
w
ires ha
v
e
b
een disconnected and reconnected for part replacement, check the
w
iring again.
Check No. 17
Check No.15
T
u
rn off the po
w
er and disconnect
the harnesses U, V, and
W
.
T
u
rn off the po
w
er. Then, t
u
rn on
the po
w
er to restart the system.
See if the same error occ
u
rs.
Monitor the po
w
er s
u
pply
v
oltage,
discharge and s
u
ction press
u
res,
and other factors for a long term.
Possi
b
le ca
u
ses
∗
Momentary drop of po
w
er s
u
pply
v
oltage
∗
Compressor o
v
erload
∗
Short circ
u
it
Check the installation condition.
Check
w
ith the in
v
erter analyzer.
N
ot a malf
u
nction.
Keep o
b
ser
v
ing.
Check the connectors and
other components.
F
u
lly open the stop
v
al
v
e.
Error again?
Stop
v
al
v
e f
u
lly open?
∗
In
v
erter analyzer:
RSUK0917C
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
A
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Содержание FDMR50TVMG
Страница 185: ...SiSG121917E Check Part 6 Service Diagnosis 180 50 65 80 class 90 class V U DC DC R22378 W R21130 W V U DCP2 DCM2 ...
Страница 212: ...Piping Diagrams SiSG121917E 207 Part 8 Appendix MKS65TVMG MKB65TVMG MKS80TVMG 3D103941A 3D103942A ...
Страница 213: ...SiSG121917E Piping Diagrams Part 8 Appendix 208 MKS90TVMG 3D104086 ...
Страница 223: ...SiSG121917E Operation Limit Part 8 Appendix 218 3 Operation Limit MKS50 65 80 90TVMG MKB50 65TVMG 4D078793B ...
