Cold and hot stiky air

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Why is My Air Conditioner Blowing Hot Air

4 Reasons Why Your May Blow Hot Air

How to Fix an Air Conditioner that Blows Hot Air

THE LINKS ABOVE SHOWS THE WHYS AND HOW TO REPAIR YOUR AC. GOOD LOOK.

because you have the temperature set at 28 degrees celcuis . Change the temperature to 18 degrees and it will cool 28 is hotter
It is a reverse cycle air conditioner it will warm the room if you set temperature to 28 degrees . Set it lower and it will blow out cold air.
Have exact same air conditioner as I recognise the remote control.
point it at the air conditioner when altering the temperature setting.
Check under the slide compartment also on the remote for more advanced settings.

either the compressor is not running or you have a leak and are low on freon. the outside fan running does not tell you the compressor is running.

the unit is blowing cold air then tripping out, is it blowing hot air out the back? im sure you mean exhaust air as in hot air so the reason your unit is tripping out is that its overheating and the pressures in the rerigeration system are to high, so the safety trip cuts the unit off.

replace the motor

all the best

Haved you cleaned the filter?? Clean them! It might be out of refrigerant. Have the unit professionally checked.
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the blade may not be connected to the shaft properly

Inadequate angle for drainage

Set thr thermostat to AC instead of HEAT.

I am a repair man and have had this problem quite a few times, check that the remote is set to heat and 30 degrees.usually a symbol like the sun,very similar to cool easy to mix up.If the a/c is set to heat the indoor fan will not start till outdoor unit has heated coil.

Coils could be dirty. Compressor could be getting too hot and cutting off. Will have one fan motor that turns condenser fan and evaporator blower.