Try this
Check if the model that you use is intended for both heating and cooling.
Check if the remote controller is the one provided when you purchased the model.
→ It is possible to set the power supply or cooling mode, even in case of wrong model, but you cannot set the heating mode, in case of wrong model.
Try again if there is another remote controller nearby.
※ You can use the Mode button to select cooling, AI, dehumidification or heating.
