– 182 –
Is 220-230V being generated
at ter
minals A and B?
Are the connections f
or
ter
minals C and D correct?
Is 5V being generated between
Pin
④
(0V) and Pin
③
(5V) at
CN 18 (test pin)?
Is the 25A fuse nor
mal?
[No operation or abnor
mal operation]
Be sure to tur
n the po
wer off
bef
ore correcting the connection.
mainly
, v
a
ristor (VS2), 3A fuse
,
smoothing capacitors
, IPM, etc.
The SW po
wer supply's
ov
ercurrent protection is
activ
ated, disab
ling the microcomputer
.
Correct proper
ly
.
If the 25A fuse has b
lo
wn,
be a
w
are that other par
ts
ma
y also be def
ectiv
e.
Replace def
ectiv
e par
ts
.
Is the po
wer circuit nor
mal?
See the descr
iption on po
wer
circuit f
o
r details
.
Is the s
witching po
wer
circuit OK?
Has the 3A fuse b
lo
wn?
Chec
k to see if C and D cab
les are
connected correctly
.
If re
v
ersed or incompletely inser
ted,
correct the cab
le connection.
Replace an
y def
ectiv
e par
ts
.
If the 3A fuse has b
lo
wn, the v
a
ri
stor 2, etc.
ma
y also be def
ectiv
e
.
With the piping and lines (A,
B,
C
, D) connected, operate
the unit in the f
o
rced cooling
mode using the outdoor unit
ser
vice s
w
itch.
Ho
w did the self-diagnosis
lamp (LD301) b
link?
See the self-diagnosis
lamp mode
.
Ye
s
Ye
s
Po
wer is OK
Ye
s
Ye
s
Ye
s
No
No
No
No
NG
(Fuse b
lo
wn)
CHECKING OUTDOOR UNIT ELECTRICAL PARTS
Содержание RAC-25FX8
Страница 44: ... 49 MODEL RAC 25FX8 RAC 35FX8 SELF CHECK SELF MODE FORCECOOLING RED RED RED ...
Страница 48: ...BASIC MODE MODEL RAF 25FX8 RAF 35FX8 57 button 63 67 67 71 75 67 ...
Страница 148: ... 166 SELF DIAGNOSIS LIGHTING MODE MODEL RAC 25FX8 RAC 35FX8 ...
Страница 191: ...TC NO 0780EF RAF 25FX8 RAC 25FX8 RAF 35FX8 RAC 35FX8 Printed in Japan HRT ...