Check code
Location
of
detection
Description
System status
Check code detection
condition(s)
Check items (locations)
• Check switch setting of
outdoor P.C. board (I/F).
SW setting
mistake
I/F
All stop
Outdoor P.C. board (I/F)
does not operate normally.
L23
—
—
When external device is
connected:
1) Check for trouble in
external device.
2) Check for trouble in
indoor P.C. board.
When external device is
not connected:
1) Check for trouble in
indoor P.C. board.
Indoor external
interlock
(External
abnormal input)
Indoor unit
Detected indoor
address
Stop of
corresponding
unit
• Indoor unit has been shut
down due to external
abnormal input signal.
L30
L30
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
• Check No. of outdoor units
connected (Only up to 5
units per system allowed).
• Check communication
lines between outdoor
units.
• Check for failure in outdoor
P.C. board (I/F).
Too many
outdoor units
connected
I/F
All stop
There are more than 5
outdoor units.
L28
L28
—
Check outdoor P.C. board
(I/F).
Extended IC
trouble
I/F
Continued
operation
There is part failure in P.C.
board (I/F).
—
L31
—
• Check the lock of fan
motor (AC fan).
• Check wiring.
Indoor fan
motor trouble
Indoor unit
Stop of
corresponding
unit
P01
—
—
• Check outdoor service
valves (gas side, liquid
side) to confirm full
opening.
• Check outdoor PMVs
(PMV1, 2, 3, 4) for
clogging.
• Check resistance
characteristics of TD1
sensor.
• Check for insufficiency in
refrigerant quantity.
• Check for failure in 4-way
valve.
• Check for leakage of SV4
circuit.
• Check SV4 circuit (wiring
or installation trouble in
SV41 or SV42).
Discharge
temperature
TD1 trouble
I/F
All stop
Discharge temperature
(TD1) exceeds 115 ˚C.
P03
P03
—
• Check model setting of
P.C. board for servicing
outdoor I/F P.C. board.
• Check connection of UART
communication connector.
• Check compressor P.C.
board, fan P.C. board, and
I/F P.C. board for failure.
Trouble in No.
of P.C. board
I/F
All stop
Insufficient number of P.C.
board are detected when
power is turned on.
L29
L29
Circle (O):
Trouble
P.C. board
• Check model setting of
P.C. board for servicing
outdoor I/F P.C. board.
Outdoor
capacity not set
I/F
All stop
Initial setting of I/F P.C.
board has not been
implemented.
L10
L10
—
• Check central control
addresses.
Duplicated
central control
address
Network
adaptor
Indoor unit
All stop
There is duplication in
central control address
setting.
L20
—
—
P.C.board
Compressor Fan Motor
01
02
03
08
09
0A
0B
10
O
O
O
O
O
O
O
O
O
O
O
O
O
1
2
1
2
11
12
13
18
19
1A
1B
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
- 144 -
Содержание MMC-UP0151HP-E
Страница 41: ...2 2 Ceiling type MMC UP0151HP E TR MMC UP0181HP E TR 41 ...
Страница 42: ...MMC UP0241HP E TR MMC UP0271HP E TR 6 4 12 7 42 ...
Страница 43: ...MMC UP0361HP E TR MMC UP0481HP E TR MMC UP0561HP E TR 43 ...
Страница 58: ...3 WIRING DIAGRAMS 3 1 4 way cassette type MMU UP HP E TR 58 ...
Страница 59: ...3 2 Ceiling type MMC UP HP E TR 59 ...
Страница 60: ...3 3 Concealed Duct Standard type MMD UP BHP E TR 60 ...
Страница 61: ...3 4 Concealed Duct High Static Pressure type MMD UP HP E TR 61 ...
Страница 62: ...Concealed Duct High Static Pressure type MMD UP HP E TR 62 ...
Страница 63: ...3 5 Concealed Duct High Static Pressure fresh air intake type MMD UP HFP E TR 63 ...
Страница 65: ...3 7 High wall type MMK UP HP E TR 65 ...
Страница 247: ...MMU UP0241HP E TR MMU UP0271HP E TR MMU UP0301HP E TR 211 233 252 253 251 254 255 213 216 263 247 ...
Страница 249: ...MMU UP0361HP E TR MMU UP0481HP E TR MMU UP0561HP E TR 268 267 213 214 249 ...
Страница 252: ...12 2 Ceiling type MMC UP0151HP E TR MMC UP0181HP E TR 025 024 252 ...
Страница 254: ...MMC UP0241HP E TR MMC UP0271HP E TR 029 028 254 ...
Страница 256: ...MMC UP0361HP E TR MMC UP0481HP E TR MMC UP0561HP E TR 051 028 027 256 ...
Страница 261: ...MMD UP0151BHP E TR MMD UP0181BHP E TR 240 239 238 233 235 261 ...
Страница 263: ...MMD UP0241BHP E TR MMD UP0271BHP E TR MMD UP0301BHP E TR 240 239 238 233 235 263 ...
Страница 265: ...MMD UP0361BHP E TR MMD UP0481BHP E TR MMD UP0561BHP E TR 240 239 238 233 235 265 ...
Страница 289: ...MMK UP0031HPL E TR MMK UP0051HPL E TR MMK UP0071HPL E TR MMK UP0091HPL E TR MMK UP0121HPL E TR 289 ...
Страница 295: ...144 9 MOO 5 BANGKADI INDUSTRIAL PARK TIVANON ROAD TAMBOL BANGKADI AMPHUR MUANG PATHUMTHANI 12000 THAILAND ...