Self Diagnostic Display Information - Toshiba MAR-C104M8-1-PE Service Manual

7. SELF DIAGNOSTIC DISPLAY INFORMATION

7.1 MAR-C104M8-1-PE, MAR-M104HTM8-1-PE, 2-Pipe Outdoor Unit.
Malfunction judgement is performed using the self-diagnostic function of the outdoor unit. The
combination of the display switch and the 8 LED's (LED 1 ~ LED 8) indicate the diagnostic details.
R S T
U V W
7.1.1 Display switch information.
Switch position
0
1
2
3
4
5
6
7
8
9
10 ~ 15
Electrolytic
Capacitors
Interface control board
MCC-1211
Fuse 20Ax3
52C3
L1 L2 L3 N
51C3
Power supply
Electrical parts location
MCC-1211
Interface control board
Malfunction information
System Communication
Status of Compressors
System Status
Fault Diagnostics (Outdoor Units)
M/C 1 Units A & B Indoor Capacity Codes
M/C 1 Units C & D Indoor Capacity Codes
M/C 2 Units A & B Indoor Capacity Codes
M/C 2 Units C & D Indoor Capacity Codes
Fault Diagnostics (Multi Controller)
Circuit Test
Not used
Power
Transistor
MCC-1252
Inverter control
board
MCC-1251
Connectors
1 2 3
1 2 3
M/C (1) M/C (2)
J2
31
LED 1~8
Display switch