Mitsubishi air conditioner symbols appear on the remote and as lamps on the indoor unit. You have picked up the remote, pressed something, and now there is a small picture on the screen that you have never seen before. A snowflake, a leaf, a fan, an arrow pointing at nothing in particular, and no words anywhere to tell you what any of it does.
Mitsubishi air conditioner symbols are compact by design, because the screen is small and the same remote has to work in every country. The result is a display that makes perfect sense once someone explains it, and none at all until then.
This guide works through the symbols you will actually meet on a Mitsubishi remote and on the indoor unit itself, what each one changes, and which ones mean the system is protecting itself rather than misbehaving. By the end you will be able to read your own screen without hunting for the manual.
The chart below covers the symbols you are most likely to meet on a Mitsubishi remote. Everything after it explains the same symbols in more detail, including the ones that only appear on certain models.
Mitsubishi air conditioner symbols at a glance
If your system is a different brand, our general guide to air conditioner symbols covers the ones every manufacturer shares.
| Symbol | What it means | What to do |
|---|---|---|
| Snowflake | Cooling mode. The system removes heat from the room and sends it outside. | Use it in summer. If the air is not cold, check the set temperature and the filters first. |
| Sun | Heating mode. The system brings heat in from outside. | Use it in winter. Expect a warm up delay before any warm air arrives. |
| Water drop | Dry mode. Removes humidity rather than chasing a temperature. | Use it on a humid but mild day. Slow airflow in this mode is normal. |
| Fan | Fan only. Air moves with no cooling or heating. | Useful on a mild day at very low running cost. |
| AUTO | The unit chooses cooling or heating by comparing the room with your setting. | Fine in settled weather. On a mild day it can pick the mode you did not want. |
| Rising bars | Fan speed, stepping through auto, quiet and the numbered speeds. | Leave it on auto unless you want the unit quieter. |
| Bar with an arrow | Vane position, which steers the air up or down. | Set it to push air across the room rather than down onto a seat. |
| Curved arrows | Swing. The vane moves continuously instead of holding one position. | Use it to spread air through a larger room. |
| ECONO COOL | Swings the vane in varying cycles so moving air feels cooler, which lets the unit hold a slightly higher temperature. | Leave it on in cooling to reduce running cost. |
| POWERFUL | Maximum output to shift a room quickly. Mitsubishi Electric cancels it after fifteen minutes. | Use it on arrival, then return to a normal setting. |
| i save | Recalls a saved temperature, fan speed and airflow direction in a single press. | Handy for a bedroom or an office setting you use every day. |
| NIGHT MODE | Dims the indoor lamp and disables the confirmation beep. | Use it in bedrooms. |
| LONG | Pushes air further into the room. | Try it where the far corner of a long room never catches up. |
| Clock, or ON and OFF | A timer is set. | If the unit refuses to start, cancel every timer before anything else. |
| Battery outline | The remote batteries are running low. | Replace both at once, press the reset button, then set the clock again. |
| Filter reminder | Maintenance rather than a fault. | Clean the filters and reset the indicator. |
Symbols vary between model ranges, and the wireless remote sold with a wall mounted split system carries a different set from the wall controller fitted to a ducted system. The model code printed on the back of your remote is the quickest way to match a chart to your own unit.
First work out which Mitsubishi you have
This catches people out constantly and it matters before you read any symbol chart. There are two separate companies selling air conditioners under the Mitsubishi name in Australia, and they are not the same business.
- Mitsubishi Electric units carry the three diamond badge and the words Mitsubishi Electric.
- Mitsubishi Heavy Industries units carry the same three diamond badge with the words Mitsubishi Heavy Industries.
- The remotes are different, the model numbers are different, and the symbol sets are not identical.
- The badge is usually on the front of the indoor unit and again on the outdoor unit.
Check the badge before you go looking for a chart. A symbol guide written for one will get you close on the other, because the mode symbols are near universal, but the extra functions differ and so do the model codes you would use to find your manual.
Everything below covers the symbols common to both, with the Mitsubishi Electric names noted where they are specific.
The five Mitsubishi aircon mode symbols
Mode is the single most important setting on the remote, and it is the one most often wrong when someone says the system is not working. Mitsubishi Electric lists five.
- A snowflake is cool. The system removes heat from the room until it reaches your set temperature.
- A sun is heat. The system brings heat in from outside, even on a cold day.
- A water drop is dry. The system dehumidifies, running the fan slowly and removing moisture rather than chasing a temperature.
- A fan is fan only. Air moves around the room and nothing is heated or cooled.
- The letters AUTO, or a combined symbol, is automatic. The unit picks the mode based on the difference between the room temperature and the temperature you set.
Fan mode is the one that causes the most confusion. The unit is running, air is coming out, and the room never changes, which feels like a fault but is exactly what fan mode does.
Dry mode causes the second most. It runs the fan very slowly on purpose, so the airflow feels weak, and it is not designed to cool a hot room quickly.
Why the mode symbol matters more than the temperature
People reach for the temperature buttons first when a room is uncomfortable. On a Mitsubishi the mode symbol usually decides the outcome before the temperature does.
In auto mode, the unit chooses cooling or heating by comparing the room to your setting. On a mild day that can mean heating when you expected cooling, which is the system doing what it was told rather than what you wanted.
If comfort is the goal on a hot afternoon, select cool directly rather than leaving it on auto. It removes the guesswork and it is the single most useful habit for anyone who finds their system unpredictable.
Mitsubishi aircon symbols for fan speed
Fan speed is usually shown as a row of small bars or curved lines that grows as the speed increases. Mitsubishi Electric steps through the settings each time you press the button.
- Auto lets the unit choose the speed based on how far the room is from your setting.
- Quiet is the lowest, intended for bedrooms and overnight running.
- Low, medium and high step up from there.
- Super high is the top setting on models that have it, for pulling a hot room down quickly.
Auto is the right default for most rooms. It runs hard while the room is a long way off and then backs off, which is both quieter and cheaper than sitting on high all afternoon.
If the airflow feels weak and the room is not changing, check this symbol before assuming the system is faulty. A remote left on quiet does a very good impression of a failing air conditioner.
The vane and airflow direction symbols
The vane is the wide flap across the outlet that steers air up or down. Its symbol is usually a small horizontal bar with an arrow, and the arrow angle changes as you cycle through positions.
- Auto sets the vane to the most efficient direction for the mode you are in.
- Numbered positions let you fix the vane at a chosen angle.
- Swing moves the vane up and down continuously.
There is a practical rule behind this. Cold air falls and warm air rises, so cooling works best with the vane high and heating works best with the vane pointed down at the floor.
A system that heats the ceiling and leaves your feet cold is very often a vane problem rather than a capacity problem, and it costs nothing to test.
The comfort and efficiency symbols on a Mitsubishi remote
These are the named functions that sit beyond mode, fan speed and airflow. None of them is a fault, and all of them can be switched off if you would rather the system simply ran.
Econo cool and what the symbol is actually doing
Econo cool appears on Mitsubishi Electric remotes and it does something slightly unusual. Rather than simply raising the set temperature, it swings the vane through varying cycles so the moving air makes you feel cooler.
Because you feel cooler, the unit can hold a slightly higher temperature and still feel comfortable, which is where the saving comes from.
If the airflow on your system seems to wander for no reason, check whether this symbol is showing. It is a feature, not a fault.
Powerful and why it turns itself off
The powerful symbol runs the fan at a speed reserved for that mode, to shift a room quickly. Mitsubishi Electric cancels it automatically after fifteen minutes.
That time limit is deliberate. Powerful is a burst setting, not a way to run the system, and leaving it on permanently would be both noisy and expensive.
If you press it and the symbol disappears a quarter of an hour later, nothing has gone wrong. The unit has simply returned to your previous settings.
The i save symbol
This one saves a set of preferences rather than changing how the system runs. It recalls a preset temperature, fan speed and airflow direction in one press.
It is most useful where one setting suits a room every time, such as a bedroom overnight or a home office during the day.
If your system suddenly jumps to a temperature nobody chose, this symbol is worth checking. A saved preset recalled by accident looks exactly like a system deciding things on its own.
Night mode and the dimming display
Night mode changes what the unit does rather than how it cools. On Mitsubishi Electric models it dims the operation indicator lamp and disables the beep.
That is aimed squarely at bedrooms, where a bright lamp and a confirmation beep at two in the morning are the two things nobody wants.
If your indoor unit has gone dark and stopped beeping, this is almost certainly why, and it is reversible from the remote.
Long mode
Long is a simpler idea than it sounds. It pushes air further into the room, which helps in a long space or where the unit sits at one end of an open plan area.
It is worth trying in any room where the far corner never seems to catch up with the rest.
Timer symbols on a Mitsubishi remote
Timer symbols are usually a small clock face or the words ON and OFF beside a time. They are also the likely reason a system refuses to start when you want it.
- An on timer holds the unit off until its set hour arrives.
- An off timer stops the unit at a set hour whether the room is comfortable or not.
- A weekly timer runs a schedule across the whole week.
- A clock display has to be set correctly or every timer above runs at the wrong time.
If the system behaves strangely at the same time every day, look at these symbols first. A weekly timer set by somebody a season ago will quietly override the button you just pressed.
The battery symbol
A small battery outline lights up when the remote batteries are running low. It is easy to miss because it is usually the smallest thing on the screen.
A remote with weak batteries often still lights up while sending nothing to the unit, which looks like an air conditioner that has stopped responding. Fresh batteries are the cheapest diagnostic step there is.
The lamp on the indoor unit is a symbol too
Not every signal is on the remote. The operation indicator lamp on the indoor unit reports what the system is doing, and Mitsubishi Electric gives it specific meanings.
- Lit steadily means the unit is running to reach your set temperature.
- Blinking means the room temperature is approaching the set temperature.
- Not lit means the unit is in standby, which only happens during multi system operation.
That middle one surprises people. A blinking lamp is often read as a fault when it is the system telling you it is nearly there and beginning to ease off.
Demand response symbols on Australian models
Australian Mitsubishi Electric models include a demand response function, which lets the system reduce its load when the network asks it to. It is shown through the lamps on the indoor unit rather than by a symbol on the remote.
The manual describes distinct lamp patterns for each demand response level, with one lamp lit and another blinking in a set rhythm.
If your unit is showing an unusual lamp pattern and still cooling, this is a possible explanation and it is not a fault. The pattern in your own model manual is the definitive reference.
Symbols on a wired controller or ducted system
Ducted Mitsubishi systems use a wall mounted controller rather than a handheld remote, and the screen is larger, so it usually shows words alongside symbols.
- Mode, temperature and fan speed appear much as they do on a handheld remote.
- Zone names or numbers appear with an indicator showing which are open.
- A filter reminder appears after a set number of running hours.
- A spanner or similar maintenance symbol indicates a recorded fault.
The advantage of a wired controller is that a fault shows as a readable code rather than a blink pattern you have to count. Write it down before you clear it.
Working out which Mitsubishi remote you have
Two Mitsubishi remotes can look almost identical and carry different functions, which is why a chart found online sometimes does not match the screen in your hand.
The model code is printed on the back of the remote, or inside the battery compartment. Mitsubishi Electric Australia publishes a list of them, and the codes you are most likely to find include KG1F, KP0C, KM04A and KP0A on handheld remotes, the SG and XG families on older units, and PAR 41MAAM on wired wall controllers.
Match the code rather than the shape. It takes a few seconds and it saves reading a chart written for a different range.
Two more things worth knowing while the remote is in your hand. Mitsubishi publishes a signal distance of about 6 metres, so a remote that works up close and not from the couch is usually telling you about distance rather than a fault. And the indoor unit beeps when it receives a command, which makes the beep, not the lamp, the way to confirm the unit heard you.
Common questions about Mitsubishi air conditioner symbols
What does the snowflake symbol mean on a Mitsubishi air conditioner?
The snowflake is cooling mode. The system removes heat from the room and sends it outside until the room reaches the temperature you have set.
If the snowflake is showing and the air is not cold, the common causes are a set temperature above room temperature, a filter that needs cleaning, or the system still being inside its start up delay.
What does the water drop symbol mean?
The water drop is dry mode, which removes humidity rather than chasing a temperature. It runs the fan slowly by design, so weak airflow in this mode is normal.
Dry mode is useful on a humid but mild day. It is not the right choice for cooling a hot room, and switching to the snowflake will do far more.
Why is my Mitsubishi blowing cool air in heat mode?
Most often because the system is warming up or defrosting. In heating, the outdoor coil collects ice, and the unit periodically reverses to melt it off, during which the indoor unit stops delivering warm air.
This is a protective cycle and it ends on its own. If cool air in heat mode continues well beyond a few minutes, that is worth investigating properly.
What does a flashing light on my Mitsubishi mean?
It depends which light. A blinking operation lamp during normal running means the room is approaching your set temperature.
A lamp blinking in a repeating pattern, particularly alongside a system that has stopped, is a fault indication. Note the pattern before switching anything off, because a power cycle clears it.
What is the heat mode on a Mitsubishi aircon?
Heat mode is the sun symbol. A reverse cycle Mitsubishi runs the refrigeration circuit backwards in this mode, collecting heat from the outdoor air and releasing it inside, which is why it still works on a cold morning.
Two things surprise people about it. Warm air does not arrive immediately, because the indoor coil has to warm up first and the unit holds the fan back to avoid blowing cold air at you. And in very cold weather the system will pause to defrost the outdoor coil, which is normal and ends on its own.
If you are unsure whether you have heating at all, check the remote for the sun symbol. A cooling only unit will not offer it.
What do the error codes on a Mitsubishi air conditioner mean?
Mitsubishi Electric does not publish error code meanings to owners. The manual asks you to stop using the air conditioner and consult your dealer when the operation lamp blinks in a repeating pattern, and it gives no table for decoding the pattern yourself.
That is a deliberate choice rather than an oversight, because the same pattern can mean different things on different model ranges. What helps is to count it. Note how many times the lamp flashes, whether there is a long pause before the pattern repeats, and what the system was doing when it stopped.
On a ducted system with a wired wall controller the code appears on the controller screen instead, which is far easier to pass on.
Is there a child lock on a Mitsubishi remote?
Not on the handheld wireless remote. None of the current Australian wall mounted manuals documents one, and no button combination exists to clear something that is not there.
The lock does exist on the wired controllers used on ducted and commercial systems, where it is set through a restriction menu and released with an administrator password.
Symbols that mean call someone, and symbols that do not
It helps to sort the display into two groups, because most symbols are settings rather than warnings.
- Mode, fan speed, vane, swing, timer, econo cool, powerful, night mode and i save are all settings you chose or can change.
- A filter reminder is maintenance you can do yourself.
- A defrost or standby indication is the system protecting itself.
- A maintenance symbol on a wired controller, or a repeating lamp pattern with the system stopped, is a recorded fault.
Only the last of those needs a technician. Everything above it is either a setting or a normal cycle, which is why reading the symbol correctly saves so many call outs.
When a symbol is not the real problem
Sometimes the display is perfectly normal and the system still underperforms. The usual causes are physical rather than electronic.
- Return air filters blocked enough to starve the indoor coil.
- An outdoor unit crowded by plants, fencing or stored items.
- Doors and windows open to a room the system was never sized for.
- A system genuinely too small for the space it is being asked to handle.
Filters are the first thing to rule out and the only one on that list that costs nothing. Our guide to how often you should service your air conditioner covers what else is worth doing each season. For the symbols every brand shares, our guide to air conditioner symbols covers the universal set.
Reading your own remote from here
Almost every Mitsubishi air conditioner symbol falls into one of five groups. Mode, fan speed, airflow direction, a comfort or efficiency function, or a timer. Once you can place a symbol in its group, its meaning is usually obvious from context.
The two that are worth committing to memory are the mode symbols and the timer symbols, because between them they explain most of the times a system appears to be doing nothing.
When something looks wrong, read the screen in this order.
- Check the mode symbol, because cool, heat, dry, fan and auto all behave differently.
- Check the set temperature against how the room actually feels.
- Check the fan speed symbol, since quiet looks a lot like a failing system.
- Check for a timer symbol, which is the usual reason a unit will not start.
- Check the vane direction, because cooling wants it high and heating wants it low.
- Check the lamp on the indoor unit, which reports what the system is doing rather than what you asked for.
If the symbols all read correctly and the system still will not perform, our guide to a Mitsubishi air conditioner not turning on takes the next step, and we service Mitsubishi split and ducted systems across Melbourne with the price confirmed before any work starts.
If the fault turns out to need a technician rather than a setting, we handle Mitsubishi air conditioning service, repairs and installation across Melbourne, with the price confirmed before any work starts.
If the settings look right and the room still will not cool, our guide on a Mitsubishi not cooling properly covers the causes.
For your model’s manual and warranty details, see the official Mitsubishi Electric Australia website.
Reviewed by AC repair and service specialist on 22 October 2026. How we write our articles