Troubleshooting MCAC-UTSM-2008-05
48 Outdoor Units
9. Troubleshooting
9.1 Indoor unit malfunction
No Malfunction
Running
lamp
Timer
lamp
Defrosting
lamp
Alarm
lamp
1 Room temperature sensor checking channel is abnormal
☆ × × ×
2 Evaporator sensor checking channel is abnormal
× × ☆ ×
3
In-outdoor unit communication checking channel is
abnormal
× ☆ × ×
4 Water-level switch malfunction
× × × ☆
5 EEPROM malfunction
☆ ☆ × ×
6 IPM module protection
☆ × × ●
7 Condenser sensor checking channel is abnormal
☆ ● × ×
8 Outdoor unit voltage protection
☆ ● × ●
9 Compressor discharge over-temperature protection
☆ × ● ×
10 Outdoor unit over-current protection
☆ ☆ × ☆
(× Extinguish, ☆ Flash at 5Hz, ● On)
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