Short answer: use COOL to cool, HEAT to heat, DRY to remove humidity, AUTO to let the unit choose between heating and cooling, and FAN to move air without heating or cooling. Press the MODE button on the remote to switch: Cool, Dry, Heat, Auto, Fan.
| Mode | What it does | Best for | Tip |
|---|---|---|---|
| Cool (snowflake) | Removes heat (and some humidity) to cool the room | Hot days | Set 2–3°F (1–2°C) below the room temperature |
| Dry (droplet) | Runs at low fan speed to pull moisture from the air, with little change in temperature | Humid, sticky days | Helps prevent mold and musty smells |
| Heat (sun) | Reverses the cycle to bring heat inside | Cold weather | It can take a few minutes to start blowing warm air. This is normal |
| Auto | Switches between heating and cooling to hold your set temperature | Mild or changing weather | Pick a comfortable temperature and leave it |
| Fan | Only the indoor fan runs, no heating or cooling | Air circulation | Uses the least energy |
Can the unit dehumidify while heating?
No. A mini split only removes humidity in COOL or DRY mode. In HEAT mode it doesn't dehumidify, and heating usually lowers indoor humidity anyway.
Good to know
- Available modes can vary slightly by model.
- On multi-zone systems, all indoor units must use the same mode (all heating or all cooling). Otherwise the display shows "--". See "--" mode conflict.
- In heating mode in cold weather, the unit defrosts from time to time and briefly stops blowing warm air. See DF (defrost) code.
- Room feels warmer or cooler than the setting? See Why is my unit heating above or cooling below the set temperature?
More help
- Videos: Senville remote control guide and mini split temperature and humidity tips
- Your remote's manual: Which remote does my unit use?
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