– 67 –
Correct wiring.
Replace o
u
tdoor P.C.
b
oard.
NO
NO
Doe
s
the
s
ame tro
ub
le occ
u
r in
operation witho
u
t compre
ss
or lead?
Check compre
ss
or. (layer
s
hort, etc.)
Tro
ub
le
→
Replace
I
s
there no pro
b
lem on connection
of compre
ss
or lead or reactor?
(Check referring to Wiring diagram.)
YES
YES
Replace o
u
tdoor P.C.
b
oard
(MCC-1597).
Check wiring con
s
tr
u
ction.
A
s
k repair of power
su
pply.
YES
NO
I
s
power
su
pply voltage normal?
(342 to 457V)
Replace fan motor.
Doe
s
the fan rotate witho
u
t tro
ub
le when rotating
s
haft of fan motor with hand
s
d
u
ring power-OFF?
I
s
coil re
s
i
s
tance of fan motor correct?
Between red and white lead wire
: 12 to 20
Ω
Between white and
b
lack lead wire : 12 to 20
Ω
Between
b
lack and red lead wire
: 12 to 20
Ω
YES
NO
Check
code
[P22]
[P26]
[P29]
—
No code
Outdoor
LED display
<Display 1> <Display 2>
<Display 1>
<Display 2>
<Display 1>
<Display 2>
<Display 1>
<Display 2>
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Fan system trouble]
Single operation check for outdoor fan
1) Set SW804 of Dip
s
witch a
s
the following fig
u
re and then p
us
h SW801 for
approx. 1
s
econd to check
s
ingle operation of o
u
tdoor fan. U
s
e thi
s
method to
check which fan,
u
pper or lower fan, ha
s
a tro
ub
le.
• When p
us
hing SW801 for 1
s
econd again or 2 min
u
te
s
pa
ss
ed, the fan
s
top
s
.
2) After check, t
u
rn off all Dip
s
witch
SW804.
[Short-circuit of compressor drive element]
Outdoor fan single operation
[Position detection circuit trouble]
[Other trouble]
Compre
ss
or di
s
order d
u
e to
su
dden change of load, etc.
∗
Altho
u
gh the di
s
play of o
u
tdoor LED o
u
tp
u
t
s
, the
u
nit a
u
tomatically re
s
tart
s
and tro
ub
le i
s
not determined.
∗
LED di
s
play al
s
o may o
u
tp
u
t d
u
e to negative pha
s
e of compre
ss
or or wire
coming-off.
Replace o
u
tdoor P.C.
b
oard
(MCC-1596).
ON
1 2 3 4
SW804
SW801
P
us
h
