Yes, it is generally safe to switch off an air conditioner (AC) using the remote control without unplugging the power plug from the main socket. Remote controls for AC units are designed to control the power supply and various functions of the AC unit, including turning it on and off.
When you use the remote control to turn off the AC, it sends a signal to the AC unit to stop running and power down. The AC unit will stop cooling and the compressor will shut off, but it will still be connected to the power supply.
However, it's important to note that if you want to completely cut off power to the AC unit for safety reasons or when it's not in use for an extended period, it is recommended to unplug the power plug from the main socket. This ensures that there is no electricity flowing to the AC unit and reduces the risk of electrical hazards or potential damage to the unit.
Additionally, unplugging the power plug can also help save energy, as some AC units consume a small amount of standby power even when they are turned off with the remote control. By unplugging the unit, you can completely eliminate this standby power consumption.