Why Does the Sharp Portable Air Conditioner Turn Itself off?

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The Sharp portable air conditioner (AC) can be carried into any room, plugged in and used to cool the room. Every now and then, you might experience an issue with the unit suddenly losing power. The cause of the power loss can be remedied with basic troubleshooting and maintenance.

Tripped Breaker

  • If the Sharp air conditioner suddenly loses power, the breaker might have been tripped due to a power surge or a lightning strike. Open the breaker box inside of your home and examine the breaker that is connected to the portion of the home that supports your AC's electrical connection. If the AC breaker switch is in between "Off" and "On" or completely "Off," flip the switch over to "On." Allow three minutes to pass before you turn the AC back on.

Three-Minute Rule

  • When you turn off the Sharp portable air conditioner and start it again without allowing three minutes to pass, the air conditioner's internal compressor might shut off after a moment as a safety measure, which will cause the unit to stop working. The unit won't allow you to turn it back on until approximately five minutes have passed. Wait five minutes before trying to turn the air conditioner back on.

Full Water Tank

  • If the unit shuts off suddenly, observe the indicator lights on the Sharp. If the "Operation," "Timer" and "Mega Cool" indicator lights are flashing, the internal water tank is full and requires draining before the unit will turn back on. Unplug the power cord for safety. Pick up the portable AC, and move it to a drainage area or outside. On the side of the unit is a stopcock. Pull the stopcock out of the drainpipe, and allow the water to drain out from the Sharp. When the water is fully drained, push the stopcock back into place, plug the unit back in and turn it on.

Bad Power Connection

  • Unplug the power cord from its designated outlet to reset the connection. The power cord might not be firmly plugged in, thus causing random power outages. Plug a separate device into the outlet to ensure that the outlet is working correctly. Look the power cord over to confirm that it's intact with no dents or holes. If the power cord is damaged, replace it immediately as it's likely the reason the unit loses power suddenly -- plus it's a safety hazard.

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