Toshiba Carrier MMY-MAP1446FT9P-UL Installation Manual - Page 30
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11
Troubleshooting
In addition to the CODE No. on the remote control of an indoor unit, you can diagnose failure type of an outdoor
unit by checking the 7-segment display on the interface P.C. board.
Use the function for various checks.
Set every DIP switch to OFF after checking.
7-Segment display and check code
Rotary switch setting value
SW01
SW02
SW03
1
1
1
Outdoor unit check code
* If a check code has an auxiliary code, the display indicates the check code for three seconds and the auxiliary
code for one second alternately.
Check code (indicated on the 7-segment display on the outdoor unit)
Indicated when SW01 = [1], SW02 = [1], and SW03 = [1].
Check code
Indication on 7-segment display on the outdoor unit
Auxiliary code
E06
Number of indoor units which received normally
E07
—
E08
Duplicated indoor addresses
01: Communication between indoor and outdoor units
E12
02: Communication between outdoor units
E15
—
00: Capacity over
E16
01~: Number of connected units
E17
—
00: Header is nothing
E19
02: 2 or more header units
01: Other line outdoor connected
E20
02: Other line indoor connected
E23
—
E25
—
E26
Number of outdoor units which received normally
E28
Detected outdoor unit No.
E31
IPDU quantity information
(*1)
E31
80
F04
—
F05
—
01: TE1 sensor
F06
02: TE2 sensor
F07
01: TL1 sensor
F08
—
57-EN
D600
D601 D602 D603 D604
Indication
LED
A
Outdoor unit number
A
(U
1
B
Check code display*
Check code name
Decrease of number of indoor units
Indoor/outdoor communication circuit trouble
Duplication of indoor addresses.
Automatic addressing start trouble
No indoor unit during automatic addressing
Capacity over / number of connected indoor units
Indoor/Flow selector unit communication trouble
Number of header outdoor unit trouble
Other lines connected during automatic addressing
Sending trouble between outdoor units
communication
Duplicated follower outdoor address set up
Decrease of connected outdoor units
Follower outdoor unit trouble
IPDU communication trouble
Communication trouble between MCU and sub MCU
TD1 sensor trouble
TD2 sensor trouble
TE1 sensor trouble
TE2 sensor trouble
TL1 sensor trouble
TO sensor trouble
– 29 –
Indication on 7-segment display on the outdoor unit
01: TS1 sensor
F12
02: TS2 sensor
01: Compressor 1
F13
02: Compressor 2
F15
F16
F23
F24
F31
B
01: Compressor 1
H01
02: Compressor 2
to U
)
3
01: Compressor 1
H02
02: Compressor 2
01: Compressor 1
H03
02: Compressor 2
H05
H06
H07
Detected outdoor unit No.
01: TK1 sensor trouble
02: TK2 sensor trouble
H08
04: TK4 sensor trouble
05: TK5 sensor trouble
H15
01: TK1 oil circuit trouble
02: TK2 oil circuit trouble
H16
04: TK4 oil circuit trouble
05: TK5 oil circuit trouble
J03
J10
Flow selector units overflow trouble
J11
L02
Model mismatch of indoor and outdoor unit
L04
L06
Number of prior indoor units
L08
L10
L12
01: Flow selector unit(s) installation trouble
00:
L17
FE: Flow selector units connected capacity
L18
Detected indoor unit address
L23
01: Clean Converter setting trouble
d0: Duplication of flow selector unit address
L24
d1: Indoor unit(s) operation mode priority setting
L28
L29
IPDU number information
L30
Detected indoor unit address
L31
Check code
Auxiliary code
TS1 or TS2 sensor trouble
TH (Heat sink) sensor trouble
—
Outdoor temp. sensor miswiring (TE1, TL1)
—
Outdoor pressure sensor miswiring (Pd, Ps)
—
Ps sensor trouble
—
Pd sensor trouble
—
Outdoor EEPROM trouble
Compressor breaking down
Compressor trouble (Locked)
Current detection circuit trouble
—
TD1 sensor miswiring
—
Low pressure protective operation
Oil level down detection
(Indicated only on the header outdoor unit)
Temperature sensor trouble for oil level
—
TD2 sensor miswiring
Oil level detector circuit trouble
—
Flow selector units duplicated
Flow selector units overflow trouble
—
Flow selector TCS sensor trouble
System shutdown trouble from indoor unit
—
Outdoor system address duplication
Duplication of indoor units with priority
—
Indoor unit group/address unset
—
Outdoor unit capacity unset.
Flow selector unit(s) system trouble
—
Inconsistent models of outdoor units
Flow selector units connected capacity over
Flow selector unit trouble
Setting trouble
Flow selector unit(s) system trouble
—
Outdoor connected quantity over
IPDU quantity trouble
(*1)
External interlock of indoor unit
—
Other compressor troubles
Check code name
58-EN