Troubleshooting - Toshiba MMY-MAP0804FT8-E Installation Manual

<Corrective trial>
▼ Start operation
1
Set the rotary switches on the interface P.C. board of the header outdoor unit as below.
When in "COOL" mode: SW01=[2], SW02=[5], SW03=[1].
When in "HEAT" mode: SW01=[2], SW02=[6], SW03=[1].
When in "FAN" mode: SW01=[2], SW02=[9], SW03=[1].
7-segment display
[A] [B]
[C ] [ ]
[H ] [ ]
[F ] [ ]
2
Push and hold SW04 for more than 2 seconds.
NOTE
• You cannot change the temperature setting during the test run.
• Errors 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 ]
[F ] [ - F ]
▼ 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] [ ]
Interface PC board
63-EN
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
12

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 outdoor connected
E20
02: Other line indoor connected
E23 —
E25 —
E26 Number of outdoor units which received normally
E28 Detected outdoor unit number
(*1)
E31 IPDU quantity information
E31 80
F04 —
F05 —
01: TE1 sensor
F06
02: TE2 sensor
F07 —
F08 —
01: TS1 sensor
F12
02: TS2 sensor
– 32 –
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
Communication error between MCU and sub MCU
TD1 sensor error
TD2 sensor error
TE1 sensor error
TE2 sensor error
TL sensor error
TO sensor error
TS1 sensor error
TS2 sensor error
B
)
3
64-EN