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When poor air conditioning and refrigeration effect, check the following points: GUVservice manual download site
* Air filter is clogged.
* Temperature set by the temperature control switch is appropriate.
* Are there any obstructions in front of the outdoor unit.
* Room doors and windows are closed.
* Air volume is set to "low-risk" position.
* Indoor area is too large, the air conditioner cooling capacity is too small.
* The house is being used electric appliances heating element.
* Whether the person inside the house a lot.
* Is there a strong sun shine.
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