3.2Safety features
⚫ Compressor three-minute delay start
The compressor starts with a maximum delay of 30 seconds when the unit is started for the
first time, and a maximum of 3 minutes when the subsequent unit restarts.
The outdoor fan motor and compressor start at the same time, but after the compressor stops,
the outdoor fan motor will stop after a delay of 30 seconds.
⚫ Automatic shutoff based on discharge temperature
If the compressor discharge temperature exceeds 115°Cfor 5 seconds, the compressor stop to work.
After the discharge temperature is down to 90°C, the unit restart.
⚫ Inverter module protection
The inverter module has an automatic shutoff mechanism based on the unit’s current, voltage, and
temperature. If automatic shutoff is initiated, the corresponding error code is displayed on the indoor
unit and the unit stops operation.
⚫ Compressor preheating
Preheating is automatically activated when ambient temperature (T4) and discharge
temperature (T5) is lower than 1°C and the compressor stop.
When T4 or T5 is higher than 3°C, or the T4 and T5 temperature sensor are failed at the
same time, or compressor runs, the unit will exit compressor preheating.