Troubleshooting - Toshiba MMY-MAP0804HT8-E Installation Manual

61-EN
SMMS-i
11

TROUBLESHOOTING

In addition to the CODE No. on the remote controller 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
00: Header is nothing
E19
02: 2 or more header units
01: Other line indoor connected
E20
02: Other line indoor connected
E23 —
E25 —
E26 Number of outdoor units which received normally
E28 Detected outdoor
(*1)
E31 IPDU quantity information
F04 —
F05 —
01: TE1 sensor
F06
02: TE2 sensor
F07 —
F08 —
F12 —
01: Compressor 1
F13 02: Compressor 2
03: Compressor 3
Installation Manual
D600 D601 D602 D603 D604
Indication LED
A
Outdoor unit number
A
(U to U
1
B Check code display*
Check code name
Decrease of number of indoor units
Indoor/outdoor communication circuit error
Duplication of indoor addresses.
Automatic addressing start error
No indoor unit during automatic addressing
Capacity over / number of connected indoor units
Number of header outdoor unit error
Other lines connected during automatic addressing
Sending error between outdoor units communication
Duplicated follower outdoor address set up
Decrease of connected outdoor units
Follower outdoor unit error
IPDU communication error
TD1 sensor error
TD2 sensor error
TE1 sensor error
TE2 sensor error
TL sensor error
TO sensor error
TS1 sensor error
TH (Heat sink) sensor error
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Indication on 7-segment display on the outdoor unit
F15
F16
F22
F23
F24
F31
B
01: Compressor 1
H01 02: Compressor 2
03: Compressor 3
)
4
01: Compressor 1
H02 02: Compressor 2
03: Compressor 3
01: Compressor 1
H03 02: Compressor 2
03: Compressor 3
H05
H06
H07
01: TK1 sensor error
02: TK2 sensor error
H08 03: TK3 sensor error
04: TK4 sensor error
05: TK5 sensor error
H15
01: TK1 oil circuit error
02: TK2 oil circuit error
H16 03: TK3 oil circuit error
04: TK4 oil circuit error
05: TK5 oil circuit error
H25
L04
L06 Number of prior indoor units
L08
L10
L17
L28
L29 IPDU number information
L30 Detected indoor unit address
L31
P03
01: Compressor 1
P04 02: Compressor 2
03: Compressor 3
00:
01: Compressor 1
P05
02: Compressor 2
03: Compressor 3
Check code
Auxiliary code
Outdoor temp. sensor miswiring
—
Outdoor pressure sensor miswiring (TE1, TL)
Outdoor temp. sensor miswiring
—
Outdoor pressure sensor miswiring (Pd, Ps)
— TD3 sensor error
— Ps sensor error
— Pd sensor error
— Outdoor EEPROM error
Compressor breaking down
Compressor error (Locked)
Current detection circuit error
— TD1 sensor miswiring
— Low pressure proctive operation
— Oil level down detection
Temperature sensor error for oil level
— TD2 sensor miswiring
Oil level detector circuit error
— TD3 sensor miswiring
— Outdoor system address duplication
Duplication of indoor units with priority
— Indoor unit group/address unset
— Outdoor unit capacity unset.
— Mismatch of the outdoor unit model
— Outdoor connected quantity over
(*1)
IPDU quantity error
External interlock of indoor unit
— Other compressor errors
— Discharge temperature TD1 error
High-pressure SW system operation
Phase missing/power failure detection
Inverter DC voltage error (on compressor)
62-EN
Installation Manual
Check code name