Fujitsu · Air Conditioners
In cooling mode, heat generated by other appliances (like ovens or computers) or a large number of people in the room can overwhelm the air conditioner's cooling capacity, reducing its effectiveness.
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Turn off any unnecessary heating apparatus or computers that are generating heat.
Reduce the number of people in the room if possible to minimize body heat.
Consider setting the air conditioner temperature lower if these heat sources cannot be removed.