10 Troubleshooting
Troubleshooting procedure
SMGB0136 rev.0 - 07/2021
238
Alarm code
03
Abnormal transmission between the indoor units and the outdoor unit
• This alarm is displayed when an abnormal operation is maintained for three minutes after the normal transmission
between the indoor units and the outdoor unit. Also, an abnormal operation is maintained for 30 seconds after the
micro-computer is automatically reset. The alarm is displayed when the abnormal transmission is maintained for 30
seconds from the starting of the outdoor unit.
• Investigate the cause of the overcurrent and take the necessary action when the fuses are blown out or the breaker
for the outdoor unit is activated.
• This alarm code may be indicated when the inverter or the fan motor malfunction and the outdoor unit cannot
secure the power source (No indication on the 7-segment of outdoor unit PCB). In this case, surely check the
inverter, fan motor and the continuity of the fuse on the circuit.
(Refer to the next page)
To Next Page
Loading...
