Troubleshooting for Outdoor Unit
SiSG121917E
161
Part 6 Service Diagnosis
Reference
Reference
Troubleshooting
Check No.15
Refer to P.173
Check No.21
Refer to P.178
(R22271)
Caution
YES
2 sec
Time
N
O
YES
YES
N
O
N
O
N
O
YES
YES
N
O
C
u
rrent
(g
u
ideline)
T
u
rn off the po
w
er. Then, t
u
rn on
the po
w
er to restart the system.
Start operation.
Check No. 21
Check the capacitor
v
oltage.
Meas
u
re the rectifier inp
u
t
v
oltage.
T
u
rn off the po
w
er. Disconnect the
harnesses U, V, and
W
.
T
u
rn off the po
w
er and reconnect
the harnesses. Then t
u
rn on the
po
w
er again and restart operation.
Check No.15
Check
w
ith the in
v
erter analyzer.
∗
In
v
erter analyzer:
RSUK0917C
+ 100
- 50
Voltage
w
ithin the allo
w
a
b
le
range (Po
w
er s
u
pply
v
oltage ± 15
%
)?
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Check the po
w
er s
u
pply
v
oltage.
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Replace the compressor.
Capacitor charged
w
hen
the indoor
u
nit or o
u
tdoor
u
nit main relay t
u
rns on
Rising
w
ith increasing
fre
qu
ency
Correct the po
w
er s
u
pply or
replace the o
u
tdoor
u
nit PCB
(main PCB).
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.
∗
R
u
nning c
u
rrent
as sho
w
n at right
w
ith relay ca
b
le 1
or 2?
W
ithin 320 VDC?
Any LED OFF?
Compressor r
u
nning?