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Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
No
* Chec
k there is 220-240V v
oltage of 1-3 pin of CN68 on indoor P
.C
. board.
[P10]
Sub-code:
Ov
erflo
wing indoor unit's address
Chec
k code
Cause
Chec
k code name
Is float SW
connector (Indoor control P
.C
. board
CN34) connected
nor
mally?
Does float SW
oper
ate?
Is wir
ing nor
mal?
Does dr
ain pump
oper
ate?
Is po
w
er supply to
dr
ain pump nor
mal?*
Correct connector connection.
Chec
k and correct wir
ing.
Chec
k indoor P
.C
. board.
F
ailure
→
Replace
Chec
k indoor P
.C
. board.
F
ailure
→
Replace
Chec
k dr
ain pipe
, etc.
Replace dr
ain pump
, and chec
k cab
ling.
W
ater o
v
erflo
w in an indoor unit
1.
Float SW malfunction
2.
Dr
ain pump malfunction
3.
Clogging of dr
ain pipe
4.
Indoor P
.C
. board error
No
No
No
No
No
[P12]
CN333
CN334
Chec
k code
Cause
Chec
k code name
Indoor f
an motor error
1.
Wir
ing error of f
an motor connector
2.
F
an motor error
3.
Indoor P
.C
. board error
T
ur
n off po
w
er supply
.
* Detectab
le in model equipped with DC f
an motor
(4-w
a
y cassette
, 2-w
a
y cassette
, 1-w
a
y cassette
,
concealed duct, w
all and ceiling types)
Does f
an tur
n
without troub
le when
tur
ning it with hands?
Is
there connection
error or disconnection on
connectorCN333, CN334 of
indoor P
.C
. board
(MCC-1402, MCC-1570)?
Is
resistance v
alue
betw
een each phase at
motor side of f
an motor connector
CN333 on indoor P
.C
.
board (MCC-1402,
MCC-1570) correct? *1
Is
resistance v
alue
at motor side of f
an
motor connector CN334 on
indoor P
.C
. board (MCC-1402,
MCC-1570)
correct? *2
Is output
of indoor f
an motor
position detectiv
e signal
correct? *3
Correct connector connection.
Replace indoor f
an motor
.
Replace indoor f
an motor
.
Replace indoor f
an motor
.
Replace indoor f
an motor
.
Chec
k indoor P
.C
. board
(MCC-1402, MCC-1570).
F
ailure
→
Replace
Remo
v
e connectors CN333 and CN334 on
indoor P
.C
. board (MCC-1402, MCC-1570).
*1
• Is not winding 1 (Red lead) to 3 (White lead), 3 (White lead) to 5 (Blac
k lead), 5 (Blac
k
lead) to 1 (Red lead) opened/shor
ted?
→
Resistance v
alue should satisfy the f
ollo
ws
.
[4-w
a
y Cassette type]
AP007 to AP030:
Appro
x.
70 to 100
Ω
AP036 to AP056:
Appro
x.
35 to 50
Ω
[2-w
a
y Cassette type]
AP007 to AP015:
Appro
x.
70 to 100
Ω
AP018 to AP030:
Appro
x.
30 to 70
Ω
AP036 to AP056:
Appro
x.
20 to 50
Ω
[1-w
a
y Cassette type]
Appro
x.
30 to 70
Ω
[Ceiling type]
AP015 to AP027:
Appro
x.
30 to 70
Ω
AP036 to AP056:
Appro
x.
20 to 50
Ω
[W
all and concealed duct types]
Appro
x.
15 to 35
Ω
• Is not g
rounded betw
een cabinet and 1, 3, 5?
→
Should be 10M
Ω
or more
.
*2
*3
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Chec
k f
an motor position detectiv
e signal.
• Measure v
oltage with tester betw
een 1 and 5 of CN334 on
indoor P
.C
. board (MCC-1402, MCC-1570) under condition of CN333
and CN334 installed and po
w
er-ON.
→
T
ur
n f
an slo
wly with
hands so that pin v
oltage fluctuates betw
een 0 and 5V
.
• Betw
een 4 and 5:
5V
Chec
k resistance v
alue of f
an motor position detectiv
e circuit.
•
Is not winding 1 (Y
ello
w lead) to 4 (Pink lead)
opened/shor
ted?
→
Resistance should be 5 to 20k
Ω
.
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