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– 180 –
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
No
No
[P1
9
]
Sub-code:
Detected outdoor unit No
.
Chec
k code
Cause
Chec
k code name
4-w
a
y
v
alv
e re
v
e
rse error
1.
4-w
a
y
v
a
lv
e error
2.
TS1 sensor/TE1 sensor error
3.
Pd sensor/Ps sensor error
4.
TE sensor/TL sensor misconnection
5.
SV14 v
a
lv
e circuit oper
ation error (Coil wir
ing f
a
lls out)
Is 4-w
a
y v
a
lv
e
coil connector
connected?
Are output v
o
ltage
char
acter
istics of Pd and
Ps sensors nor
mal?
Are
char
acter
istics of
resistance v
a
lue of
TS1,
TE1 and
TL sensors
nor
mal?
Are TS1, TE1
and TL
sensor
connectors connected
nor
mally?
Does
discharge refr
iger
ant
gas b
ypass to suction
side through 4-w
a
y
va
lv
e? *1
Does 4-w
a
y
v
a
lv
e
oper
ate?
Correct connector connection.
(4-w
a
y
v
a
lv
e coil:
CN317)
Sensor error
Sensor error
Correct connector connection
TS1 sensor
: CN505
TE1 sensor
: CN520
TL sensor
: CN523
If no error occurs in the test
oper
ation, restar
t oper
ation.
4-w
a
y v
a
lv
e error
Chec
k 4-w
a
y v
a
lv
e
.
Reset the po
w
e
r supply and
star
t heating test oper
ation.
*1 Chec
k
TS1 and
TE1 temper
ature of the outdoor unit which is r
u
nning.
(I/F) SW01=[1], SW02=[7], SW03=[2]
→
TS sensor temper
ature
SW01=[1], SW02=[
9
], SW03=[2]
→
TE sensor temper
ature
<J
udgment cr
iter
ia>
TE1 sensor
: Nor
mal if
TE1 is 86
°
F (30
°
C) or less in the seasons e
xcept
summer (Outside temp 68
°
F (20
°
C) or lo
w
e
r)
TS1 sensor
: Nor
mal if
TS is 122
°
F (50
°
C) or less in the seasons e
xcept
summer (Outside temp 68
°
F (20
°
C) or lo
w
e
r)
* See "Outdoor unit temper
ature sensor
char
acter
istics" on "
9
-9
. Sensor Char
acter
istics".
No
Is
Cooling/Heating
FS unit nor
mal?
Repair Cooling/Heating FS unit.
Ye
s
Ye
s
[P20]
Chec
k code
Cause
Chec
k code name
High-pressure protectiv
e
oper
ation
1.
Pd sensor error
2.
Ser
vice v
alv
e closed.
3.
Indoor/outdoor f
an error
4.
Indoor/outdoor PMV clogging
5.
Indoor/outdoor heat e
xchanger clogging
6.
SV2 circuit error
7.
SV4 circuit error
8.
SV5 circuit error
9
. Outdoor I/F P
.C
. board error
10.
Oper
ation error of chec
k v
alv
e of main
discharge pipe
11.
Refr
iger
ant o
v
ercharge
Are ser
vice v
a
lv
es fully
opened?
Is
Cooling/Heating
FS unit
nor
mal?
Open ser
vice v
a
lv
es fully
.
Repair Cooling/Heating
FS unit.
Reset po
w
e
r supply
, and star
t a test
oper
ation corresponded to the season.
All Cooling
→
T
o
(B)
All heating
→
T
o
(C)
* 1.
Pressure b
y
pressure gauge (Chec
k joint)
2.
Pressure displa
y
on 7-segment displa
y
3.
Output v
o
ltage of I/F P
.C
. board
If 1 and 2, 3 are diff
erent, an error of pressure sensor
is considered.
If 2 and 3 are diff
erent, chec
k I/F P
.C
. board.
No
No
Are
char
acter
istics of
highpressure sensor
nor
mal?
Chec
k par
ts
.
F
a
ilure
→
Replace
NORMAL
NORMAL
NORMAL
Chec
k
incorrect piping of discharge
gas/suction gas main
pipes
.
Correct piping as nor
mal.
ABNORMAL
ABNORMAL
ABNORMAL
PMV4, SV12
oper
ation chec
k
Replace def
ectiv
e par
ts
.
Summary of Contents for MMY-MAP0724FT6UL
Page 35: ...35 3 5 Parts Layout in Outdoor Unit 072 type Model MMY MAP0724FT...
Page 36: ...36 096 120 type Model MMY MAP0964FT MAP1204FT...
Page 37: ...37 3 6 Parts Layout in Inverter Assembly 208 230V model MMY MAP0724FT9UL...
Page 38: ...38 208 230V model MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 39: ...39 460V model MMY MAP0724FT6UL...
Page 40: ...40 460V model MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 41: ...41 3 7 Outdoor Inverter print circuit board 3 7 1 Interface P C board MCC 1606...
Page 42: ...42 3 7 2 Inverter P C board for compressor MCC 1595 A3 IPDU For 208 230V model MMY MAP 4FT9UL...
Page 43: ...43 3 7 3 Inverter P C board for compressor MCC 1596 A3 IPDU For 460V model MMY MAP 4FT6UL...
Page 44: ...44 3 7 4 Inverter P C board for fan motor MCC 1610 FAN IPDU...
Page 45: ...45 3 7 5 Noise Filter P C board MCC 1608 A B For 208 230V model MMY MAP 4FT9UL...
Page 46: ...46 3 7 6 Noise Filter P C board MCC 1625 A B C For 460V model MMY MAP 4FT6UL...
Page 195: ...195...
Page 197: ...197...
Page 257: ...257 15 EXPLODED DIAGRAM PARTS LIST Outdoor unit 15 1 MMY MAP0724FT9UL...
Page 258: ...258 15 1 MMY MAP0724FT9UL...
Page 262: ...262 15 1 Inverter Assembly MMY MAP0724FT9UL...
Page 264: ...264 15 2 MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 265: ...265 15 2 MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 269: ...269 15 2 Inverter Assembly MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 271: ...271 15 3 MMY MAP0724FT6UL...
Page 272: ...272 15 3 MMY MAP0724FT6UL...
Page 276: ...276 15 3 Inverter Assembly MMY MAP0724FT6UL...
Page 278: ...278 15 4 MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 279: ...279 15 4 MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 283: ...283 15 4 Inverter Assembly MMY MAP0964FT6UL MMY MAP1204FT6UL...