Many people ask how to properly set the automatic turn-on or turn-off time on split systems. We will answer this using the "Centek" brand as an example. This function is quite convenient if you want to return from work to an already cooled or heated apartment—you just need to figure out the settings a bit.

✅ Answer
To set the timer on a "Centek" air conditioner, press the TIMER ON (to turn on) or TIMER OFF (to turn off) button on the remote control. Press the same button or use the up/down arrows to select the delay time (from 0.5 to 24 hours). Wait 3-5 seconds—the setting will save automatically, and the corresponding indicator will light up on the display.
ℹ️ Note: Before setting up, make sure the correct current time is set on the AC remote (if your remote supports a clock function—usually the CLOCK button). Otherwise, the automation may trigger incorrectly.

How to Set the Sleep/Turn-Off Timer

If you want the air conditioner to automatically shut down at night while you sleep, follow these steps:

  1. Turn on the air conditioner and set a comfortable mode (e.g., cooling at 20°C / 68°F).
  2. Press the TIMER OFF button.
  3. Use the arrows to set the number of hours after which the system should completely shut down (for example, a value of 3.0h means it will turn off in three hours). Note that you are specifying the exact number of hours until shutdown.
  4. Set the remote aside. The timer icon on the display will stop blinking—the mode is activated.

A Useful Tip for Winter

Many people set up an automatic split-system start during the autumn-winter period to warm up the room by the time they wake up. If you set the timer but notice that the system blows cold air or doesn't work at all (stays "silent") after starting, be sure to read our article: why the heating mode won't turn on.

Pros of using a timer:
  • Significant energy savings (the AC doesn't run needlessly).
  • Always a comfortable temperature when you arrive home.
  • Protection against overcooling while sleeping.
❓ How do I cancel an active timer?
Simply press the TIMER ON or TIMER OFF button repeatedly until the time value on the remote's display resets to zero (shows 0.0h), or until the timer icon disappears from both the remote screen and the indoor unit.