R410A DC Inverter Multi-split Technical Manual Outdoor Units
GD Chigo Heating & Ventilation Equipment Co., Ltd.
1.2 The outdoor unit display function
Malfunction or protection
Outdoor condenser temperature (T3) sensor malfunction
Outdoor ambient temperature (T4) sensor malfunction
Communication failure between DSP and 780034
Compressor discharge temperature (T7) sensor malfunction (Only available when short connection)
Communication failure between outdoor unit and indoor units
Inverter compressor current protection (Current too big)
Inverter compressor discharge temperature protection (Temperature too high)
High / low pressure switch protection
Outdoor coil temperature too high protection (Only available in cooling mode)
AC power voltage abnormal protection(Voltage too high or too low)
Low temperature of the outdoor environment protection (cancel)
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