Troubleshooting - Toshiba Carrier MMY-MAP0726HT6P-UL Installation Manual

2
Push and hold SW04 for more than 2
seconds.
NOTE
• The temperature setting cannot be changed during
the test run.
• Check codes are detected as usual.
• The unit does not perform test run for 3 minutes
after turning the power on or stopping running.
7-segment display
[A] [B]
[C ] [ - C
[H ] [ - H
▼ Stop operation
1
Set the rotary switches on the interface P.C.
board of the header unit back:
SW01 to [1], SW02 to [1] and SW03 to [1].
7-segment display
[A] [B]
[U1] [
SW04 SW05 SW15
Push switch Push switch
D600 D601 D602 D603 D604
7-segment 7-segment
display [A] display [B]
SW01 SW02 SW03
Rotary switches
Interface PC board
49-EN
]
]
]
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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
* 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 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
01: TL1 sensor
F07 02: TL2 sensor
03: TL3 sensor
F08 —
01: TG1 sensor
F09
02: TG2 sensor
01: TS1 sensor
F12
03: TS3 sensor
01: Compressor 1
F13
02: Compressor 2
D600
Indication LED
Outdoor unit number
A
Outdoor unit check code
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
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,TL2 or TL3 sensor trouble
TO sensor trouble
TG1 or TG2 sensor trouble
TS1 or TS3 sensor trouble
TH (Heat sink) sensor trouble
D601 D602 D603 D604
A B
(U to U )
1 3
50-EN