Toshiba MAR-C104M8-1-PE Service Manual page 49

8.6 Fault codes displayed at the Multi controller.
Display switch set to position "1".
Fault code
ThA sensor fault
80
ThB sensor fault
81
ThC sensor fault
82
ThD sensor fault
83
ThX sensor fault
84
Communication between M/C and O/D
88
Total I/D capacity codes too high
89
Multi controller control board malfunction.
8A
8.7 Fault codes displayed at the Outdoor unit.
2-Pipe : Display switch set to position "3".
3-Pipe : Display switch SW1 set to position "2", SW2 set to position "0".
Fault code
2-Pipe 3-Pipe
LED 1 ErA0
LED 2 ErA1
LED 3 ErA2
ErA4
ErA5
LED 6 ErA6
LED 7 ErA7
LED 5 ErAA
LED 8 ErAE
LED 4 ErAd
Fault
Fault
ThD1 sensor fault
ThD2 sensor fault
ThS sensor fault
ThO sensor fault
ThE sensor fault
Discharge temperature fault
Suction temperature fault
Pressure sensor fault
Low pressure fault
D.O.L. compressor fault
Sensor open / short circuit.
No initial communication between M/C and O/D
Check the wiring and control boards.
Fault code is displayed when total I/D capacity
exceeds 1.35 times the O/D unit capacity.
Sensor open / short circuit.
Detected by ThD1 and ThD2 > 130°C.
Possible cause – gas leak, refrigerant under
charge, over-load operating condition, or valve
blockage / malfunction.
Detected by ThS > 40°C.
Possible cause – gas leak, refrigerant under
charge, over-load operating condition.
Open / short circuit, or pressure sensor capillary
tube block.
Possible cause – gas leak, refrigerant under
charge, over-load operating condition, or valve
blockage / malfunction.
Detected by low pressure switch. < 0.25kgf/cm
High pressure switch, over-load relay malfunction
or phase rotation incorrect.
52
Note
Note
2 G