Sharp AF-X7BCA Operation Manual page 29

Always wait at least 3 minutes before
switching the air conditioner on again
after you have switched it off during
cooling or heating.
refrigerant R32.
Inappropriate treatment of the unit involves the risk of severe
damages of people and material. Details to this refrigerant
are found in chapter "refrigerant".
The appliance is using mildly flammable refrigerant R32 and
tested to comply with IEC 60335-2-40. There is no minimum
room area requirement for the appliance.
filled with mildly flammable
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Always wait at
least 3 minutes.