Yamato Optimum YW12H2/I User Manual (English)

Questions and Answers:

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Stephen WarrenAug 8, 2025
Why is my Yamato Optimum YW12H2/I not cooling properly?
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  Megan JohnstonAug 8, 2025
  Poor cooling can occur due to several reasons. Check if the air filter is dirty and clean it, normally it should be cleaned every 15 days. Ensure there are no obstacles blocking the air inlet and outlet. Verify that the temperature is set correctly. Make sure all doors and windows are closed. If there is direct sunlight coming through the window, use a curtain. Also, consider if there are too many heat sources or people in the room.
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Joy AndersonAug 13, 2025
Why does my Yamato Optimum YW12H2/I smell?
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  sdavisAug 13, 2025
  The smells are generated because the system circulates smells from the interior air, such as the smell of furniture, paint, or cigarettes.
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Latasha ShawAug 18, 2025
Why won't my Yamato Optimum YW12H2/I Air Conditioner restart immediately?
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  daniel61Aug 18, 2025
  When the unit is stopped, it won't restart immediately until 3 minutes have elapsed to protect the system. When the electric plug is pulled out and reinserted, the protection circuit will work for 3 minutes to protect the air conditioner.
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Megan RobinsonAug 23, 2025
What to do if I hear noise from my Yamato Air Conditioner?
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  Michael FuentesAug 23, 2025
  During unit operation or at stop, a swishing or gurgling noise may be heard. At first 2-3 minutes after unit start, this noise is more noticeable. This noise is generated by refrigerant flowing in the system. During unit operation, a cracking noise may be heard, which is generated by the casing expanding or shrinking because of temperature changes. Should there be a big noise from air flow in unit operation, the air filter may be too dirty.
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Charles WilliamsAug 28, 2025
Why does my Yamato Air Conditioner blow mist?
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  Alexander PruittAug 28, 2025
  During COOL or DRY operation, the indoor unit may blow out mist. This is due to the sudden cooling of indoor air.
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Patricia SuarezSep 2, 2025
Why can't I change the fan speed in dry mode on my Yamato Air Conditioner?
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  Debra BakerSep 2, 2025
  In DRY mode, when the room temperature becomes lower than the temperature setting plus 2 degrees Celsius, the unit will run intermittently at LOW speed regardless of the FAN setting.