Check
SiE12-411
212
Service Diagnosis
6.1.13 Main Circuit Electrolytic Capacitor Check
Check No.14
"
Checking the main circuit electrolytic capacitor
!
Never touch any live parts for at least 10 minutes after turning off the circuit breaker.
!
If unavoidably necessary to touch a live part, make sure there is no DC voltage using the
tester.
!
Check the continuity with the tester. Reverse the pins and make sure there is continuity.
6.1.14 Turning Speed Pulse Input on the Outdoor Unit PCB Check
Check No.15
<Propeller fan motor>
Make sure the voltage of 270±30V is being applied.
(1) Stop the operation first and then the power, and disconnect the connector S70.
(2) Make sure there is about DC 270 V between pins 4 and 7.
(3) With the system and the power still off, reconnect the connector S70.
(4) Make a turn of the fan motor with a hand, and make sure the pulse (0-15 V) appears twice at
pins 1 and 4.
If the fuse is blown out, the outdoor-unit fan may also be in trouble. Check the fan too.
If the voltage in Step (2) is not applied, it means the PCB is defective. Replace the PCB.
If the pulse in Step (4) is not available, it means the Hall IC is defective. Replace the DC fan
motor.If there are both the voltage (2) and the pulse (4), replace the PCB.
∗
Propeller fan motor : S70
Keep the te
s
ter in the
re
s
i
s
t
a
nce me
asu
ring r
a
nge.
When the pointer
s
wing
s
,
it me
a
n
s
the c
a
p
a
citor
f
u
nction
s
.
If the pointer doe
s
not
s
wing
a
t
a
ll,
or if it
s
wing
s
a
ll the w
a
y
bu
t doe
s
not ret
u
rn,
it me
a
n
s
the c
a
p
a
citor m
a
lf
u
nction.
DC270V
S
70
PCB
T
u
rning
s
peed p
u
l
s
e inp
u
t (0-15 V)
15V
(R2
8
59)
7
6
5
4
3
2
1
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...
