– 198 –
9-8-1.
Flo
w Selector Unit (FS Unit)
Leakage of SVD v
alv
e or SVS v
alv
e,
etc;
P
ositions to be chec
ked and chec
k code when a troub
le such as mis
wir
ing occurred.
P
a
rt
name
SVD v
alv
e
SVS v
alv
e
Clogging
O
All heating
Mainly cooling (Room heating)
Mainly heating (Room heating)
•
TC1 is lo
w
er than nor
mal indoor unit.
•
T
e
mper
ature of gas pipe at indoor side of the flo
w selector
unit is lo
w
er than that of nor
mal FS unit.
Leakage
A
O
SVD circuit –
SVS circuit
O
z
O
All cooling (SV11 ON)
Mainly cooling (Room cooling)
Mainly heating (Room cooling)
• Compared with nor
mal indoor unit,
TCJ is higher
.
• Suction gas pipe at outdoor side of the flo
w selector unit is hot.
• Refr
iger
ant circulating sound is heard in b
ypass from SVD v
alv
e
to SVS v
alv
e
.
Mis
w
ir
ing/
Misinstallation
of coil
SVD
↔
SVS
O
SVSS circuit
O
All cooling (SV11 OFF)
•
TCJ is higher than nor
mal indoor unit.
• Gas pipe at indoor side of the flo
w selector unit is not cold.
• Refr
iger
ant circulating sound is heard from SVSS v
alv
e
.
Clogging
O
SVSS circuit
O
All cooling
Mainly cooling (Room cooling)
Mainly heating (Room cooling)
•
TCJ is higher than nor
mal indoor unit.
• Gas pipe at indoor side of the flo
w selector unit is not cold.
• Refr
iger
ant circulating sound is heard from SVSS v
alv
e
.
SVDD
v
alv
e
Clogging
z
Indoor unit,
flo
w selector unit
O
All heating
Mainly cooling (Room heating)
Mainly heating (Room heating)
• In star
t time
, when e
xchanging mode from cooling to heating after
defrost oper
ation, refr
iger
ant shoc
k sound ma
y be heard.
Leakage
O
SVDD circuit
O
All cooling (SV11 ON)
Mainly cooling (Room cooling)
Mainly heating (Room cooling)
•
Refr
iger
ant circulating sound ma
y be heard from SVDD v
alv
e circuit.
• Suction gas pipe at outdoor unit side of the flo
w selector unit ma
y
be hot.
Mis
w
ir
ing/
Misinstallation
of coil
SVD
↔
SVS
O
SVDD circuit
O
All cooling (SV11 ON)
Mainly cooling (Room cooling)
Mainly heating (Room cooling)
O
SVDD circuit
O
All heating
Mainly cooling (Room heating)
Mainly heating (Room heating)
• Refr
iger
ant circulating sound ma
y be heard from SVDD v
alv
e
circuit.
z
Indoor unit,
flo
w selector unit
O
All heating
Mainly cooling (Room heating)
Mainly heating (Room heating)
•
Refr
iger
ant circulating sound ma
y be heard from SVDD v
alv
e circuit.
• Suction gas pipe at outdoor unit side of the flo
w selector unit ma
y
be hot.
• In star
t time
, when e
xchanging mode from cooling to heating after
defrost oper
ation, refr
iger
ant shoc
k sound ma
y be heard.
Leakage
P19 “4-w
a
y
valv
e re
versal
error”
O
SVS circuit
O
All heating
Mainly cooling (Room heating)
Mainly heating (Room heating)
• Compared with nor
mal indoor unit,
TCJ is lo
w
.
•
T
e
mper
ature of suction gas pipe at outdoor side of the flo
w
selector unit is higher than that of nor
mal flo
w selector unit.
• Refr
iger
ant circulating sound is heard from SVS v
alv
e circuit.
O
SVD circuit
O
All cooling (SV11 ON)
Mainly cooling (Room cooling)
Mainly heating (Room cooling)
B
•
T
e
mper
ature of
TCJ and
TC1 become high similar to heating.
(All
heating circuit)
• Discharge gas pipe at outdoor unit side of the flo
w selector unit is
rather hot.
• Refr
iger
ant circulating sound is not heard from SVS v
alv
e
, b
ut it is
heard from SVD v
alv
e
.
O
SVS circuit
O
L18 “Flo
w
selector unit
error”
C
. Gas pipe at indoor side of the flo
w selector unit is cold.
(Cooling
circuit, Liquid pac
k)
. Refr
iger
ant circulating sound is not heard from SVD v
alv
e
, b
ut it is
heard from SVS v
alv
e
.
All heating
Mainly cooling (Room heating)
Mainly heating (Room heating)
T
roub
le
mode
Operation mode
Phenomenon whic
h appear
s as result
(Corresponding indoor unit or flo
w selector unit)
J
udgment and position to be c
hec
ked
Example of
refrig
erant
flo
w
Not
cooled
Not
heated
Ma
y become
almost normal
capacity
Abnormal
refrig
erant sound
Cir
culating
sound
Detection of
c
h
ec
k code
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...