The Mitsubishi air conditioner remote controls every setting on the unit, from mode to airflow. Most people use three buttons on a Mitsubishi remote. On and off, up, and down. Everything else on the screen is treated as decoration, which is a shame, because two of the buttons nobody presses are the ones that cut a power bill.
The difficulty is that Mitsubishi prints almost every button as a picture, and the manual went into a drawer years ago. This guide works through the Mitsubishi air conditioner remote button by button, using the instructions Mitsubishi publishes for the Australian range, so you can set the clock, build a weekly schedule and understand what the named functions actually do.
Which Mitsubishi remote you have, and why it matters
Before anything else, check the model. Mitsubishi Electric sells two very different feature sets in Australia and a single instruction written for both would be wrong for one of them.
The MSZ AP range is the standard wall mounted series. The MSZ LN range is the premium series. They share the basics, and then they part company.
| Function | MSZ AP | MSZ LN |
|---|---|---|
| Clock and weekly timer | Yes | Yes |
| i save | Yes | Yes |
| ECONO COOL | Yes | Yes |
| NIGHT MODE | Yes | Yes |
| POWERFUL | Larger models only | Yes |
| i see sensor and airflow control | Not published | Yes |
| Air purifying | Not published | Yes |
One more check worth doing first. Mitsubishi Electric and Mitsubishi Heavy Industries are two different companies. Both badge their units with three diamonds. If your model number begins with SRK you have a Heavy Industries unit and none of the button names below will match.
Setting the clock on a Mitsubishi remote
Do this first, because every timer depends on it. Mitsubishi publishes four steps.
- Press CLOCK.
- Press the time buttons to set the time.
- Press DAY to set the day of the week.
- Press CLOCK again to finish.
Two practical notes from the manual. Each press changes the clock by one minute, and holding the button moves it in ten minute steps, so hold rather than tap if you are a long way out.
The CLOCK button is recessed. Mitsubishi asks you to press it gently using a thin instrument, which in practice means a paperclip or the tip of a pen rather than a fingernail.
Setting the timers
The on timer and the off timer
Both are set while the unit is running. Press the on timer or off timer button, then use the forward and backward buttons to set the time. Each press moves the setting ten minutes.
Mitsubishi confirms that the two can be used together, so you can have the unit start before you get home and stop again later the same evening.
To cancel either one, press its button again.
The weekly timer
This is the feature that earns its keep and almost nobody sets up. Mitsubishi publishes a maximum of four on or off settings for each day of the week, which is twenty eight across a week.
The sequence runs like this.
- Press the weekly timer button to enter setting mode.
- Select the day and the setting number.
- Choose whether that setting turns the unit on or off, then set the time.
- Set the temperature for that setting.
- Send the setting to the unit to complete it.
The temperature is the part worth noticing. A weekly setting is not simply an on or off switch. Each one can carry its own temperature, which means a bedroom can run warmer at bedtime and cooler through the night without anyone touching the remote.
To check what you have set later, enter the weekly timer setting mode and step through the settings to view them.
Clearing everything at once
If the schedule has become a mess, Mitsubishi publishes a single hold to wipe it. Press and hold for five seconds to erase all weekly timer settings.
Choosing a mode
The MODE button cycles in a fixed order on both the MSZ AP and MSZ LN ranges. Auto, cool, dry, heat, then fan.
Each one does something quite different, and mode is the setting most often wrong when somebody says the system is not working.
- Auto lets the unit decide between cooling and heating by comparing the room with your setting. Useful in settled weather, less so on a mild day when it can choose the mode you did not want.
- Cool removes heat from the room.
- Dry removes humidity rather than chasing a temperature. The fan runs slowly by design.
- Heat brings warmth in from outside. Expect a delay before warm air arrives.
- Fan moves air with no cooling or heating at all.
If a symbol on the screen has you stuck rather than a button, our guide to Mitsubishi air conditioner symbols covers the display in detail.
Setting the temperature
Each press of the up or down button raises or lowers the setting by one degree.
Worth being precise about the range, because it varies by series and Mitsubishi does not state it the same way everywhere. The MSZ EF operating instructions publish a normal minimum of 16 degrees in heat mode and a maximum of 31 degrees. The MSZ AP owner manual does not carry a range table at all, and the figures that exist in service documentation written for technicians do not agree with each other on the heating minimum. Go by your own manual rather than a figure found online.
There is one published exception worth knowing. Under i save, the minimum heating setting drops to 10 degrees, which is what makes it usable as a frost protection setting for a room nobody is in.
What the manual does state clearly is where temperature cannot be set at all. In dry mode the temperature cannot be set, because the unit works it out from the room temperature when you start. In fan mode there is no temperature setting either.
Fan speed, six steps rather than three
Mitsubishi publishes six fan settings, which is more than most people realise. Auto, the quietest step, low, medium, high, and super high.
The quietest step is named differently depending on which manual you have. The smaller MSZ AP models call it silent, while the MSZ AP60 and above and the MSZ LN call it quiet. Both are correct for their own range.
Auto is the sensible default. It varies the speed based on how far the room is from your setting, which means it runs hard when it needs to and quietly when it does not.
Airflow direction, the vane and the wide vane
The vane is the wide flap across the outlet that steers air up and down. Mitsubishi publishes seven settings on the VANE button. Auto, then positions one through five, then swing.
Auto is smarter than it sounds. In cooling, drying and fan modes it sets the vane horizontal. In heating it drops to position four, which pushes warm air toward the floor where it is needed.
If you set it by hand, Mitsubishi recommends an upper position for cooling and drying and a lower position for heating. That follows how air behaves, since cool air falls and warm air rises.
Swing moves the vane up and down intermittently, which spreads air through a larger room.
The wide vane button controls left and right airflow on models that have it, and it includes its own swing setting.
The comfort functions worth learning
i save
This is the most useful button on the remote and the least understood. Mitsubishi describes it as a simplified setback function that recalls a preferred setting with a single press. It stores temperature, fan speed and airflow direction together.
Two settings can be saved, one for cooling and one for heating, so a single button can serve summer and winter.
Mitsubishi publishes its own suggestion for what to store. Set the temperature two to three degrees warmer in cooling and cooler in heating than you normally would. That is the whole energy saving idea behind the button.
To set it, press the i save button during cooling, econo cool, heating or night mode, then set the temperature, fan speed and airflow direction you want. From then on a single press recalls it.
It cancels when you press it again, and also automatically when the mode or powerful button is pressed.
ECONO COOL
Pressed during cooling, econo cool swings the vane vertically in varying cycles. Mitsubishi explains why this works rather than leaving it vague. Moving air makes you feel cooler than still air, so the microprocessor can hold a slightly higher set temperature and you will not notice the difference.
It cancels when pressed again, and automatically if the vane or powerful button is pressed.
There is no published time limit on econo cool. It runs until you stop it.
POWERFUL
This one is on the MSZ LN range and on the larger MSZ AP models such as the AP60, but not on the smaller MSZ AP models, so check your own remote before looking for it.
Pressed during cooling or heating, it runs the system at maximum output to shift a room quickly. Mitsubishi cancels it automatically after fifteen minutes, or when the on and off, fan, econo cool or i save button is pressed.
Temperature cannot be set while powerful is running. It is a burst setting, not a way to run the system.
NIGHT MODE
Night mode does three published things at once, and all three are aimed at bedrooms. It dims the operation indicator lamp on the indoor unit, it disables the beep except when operation starts or stops, and it lowers the noise level of the outdoor unit below the figure in the specifications.
It has no timer. Press it again to cancel.
If a bright lamp on the indoor unit keeps you awake, this is the only published way to dim it. Mitsubishi does not offer a separate brightness setting.
i see and airflow control, on the premium range
MSZ LN models add a sensor Mitsubishi calls i see, which controls room temperature based on the sensible temperature rather than the air temperature alone.
With it running you can choose an airflow control setting. Indirect means an occupant will be less exposed to direct airflow. Direct means mainly the area around an occupant is conditioned. Even means the unit learns the area where an occupant spends most of the time.
Turning off i see turns off airflow control with it, since one depends on the other.
Running the unit when the remote is lost
Every Mitsubishi Electric indoor unit has an emergency operation switch, which Mitsubishi abbreviates to E.O. SW. Each press changes the operation in a fixed order. Emergency cooling, then emergency heating, then stop.
The settings are fixed at 24 degrees, medium fan speed and automatic horizontal vane. You cannot change any of them from the unit.
One caveat that surprises people. Mitsubishi publishes in the owner manual that the first 30 minutes of emergency operation is a test run, during which temperature control does not work and the fan is set to high. So the first half hour will be loud and will not stop at 24 degrees. That is designed behaviour rather than a fault.
If the remote itself is the problem rather than lost, our guide on a Mitsubishi remote not working works through the batteries, the reset button and the range.
Where to keep the remote
The holder is not just tidiness. Mitsubishi asks you to install the remote controller holder in a place where the signal can be received by the indoor unit, and publishes a mounting height of about 1.5 metres above the floor, checking from that position that signals are received reliably.
That matters because the published signal distance is about 6 metres. A holder fitted on the far wall of an open plan room can sit outside it.
Common questions about using a Mitsubishi remote
Why will my air conditioner not start?
Check the timers before anything else. An on timer holds the unit off until its set hour, and a weekly timer set months ago will do the same thing every week. Cancel every timer, then try again.
The screen works but the unit ignores it
That is a transmission problem rather than a power problem. Move within about 6 metres, point at the receiver and listen for the beep. Mitsubishi publishes the beep as the confirmation that the signal was received, not the lamp.
Do I have to set the clock again after changing the batteries?
Yes. Mitsubishi asks you to press the reset button after fitting new batteries, and that clears the clock and the timers with it. Set the clock first, then rebuild any schedule.
What is the best setting to leave it on?
For many Melbourne homes, auto fan speed, auto vane and a sensible temperature, with i save programmed two to three degrees off your usual setting for the days you want it running cheaply. Our guide on how often to service your air conditioner covers the other half of running cost, which is maintenance.
Why does the room never reach the set temperature?
If the remote settings are right, the cause is usually physical rather than electronic. Blocked filters, an outdoor unit crowded by plants or fencing, or a door left open. Our guide on a Mitsubishi not cooling properly works through it.
Getting more out of the remote you already have
Three things are worth doing today. Set the clock, because nothing else works properly without it. Program i save with a temperature two to three degrees off your normal setting. And build one weekly schedule for the room you use most.
That is perhaps fifteen minutes of work and it changes how the system runs every day afterwards.
If the system is not doing what the remote tells it, that is a different problem. Our Mitsubishi air conditioning service covers split and ducted systems across Melbourne, and you can request a quote before booking anything in.
For general advice on staying safe around electrical appliances at home, see Energy Safe Victoria.
Reviewed by AC repair and service specialist on 22 October 2026. How we write our articles