Hi guys. Hi to everybody. I am new here. I have cx5 2013 and when l drive l put AC on heating. At first start hot air and after 15 second air start get cooler and cooler until start blowing a coold air. Does anybody knows what can be a problem. Thanks guys.

 

Not really clear by your question as to what you are asking.
I can tell you the Mazda is no different than any other vehicle.
AC and heating both take a bit of time to affect temperature change, neither is instantaneous.
The heater takes a bit longer than the AC as it needs the engine to come to sufficient temperature to produce heat.

 

After 30-40 minutes of driving it is the same problem. Sometimes ac work normal but in last 15 days it is rare. It seems that when l start ac flaps are on heating and bit by bit moving to cold. After l turn off ac and turn on after 5 minutes same story. First hot ait then bit by bit cold.

 

Okay there are a host of possible issues you can check yourself (or take to a shop if not comfortable doing so).
1. Check that your cabin filter is clean (not likely your issue but it should be clean)
2. Check the refrigerant charge is correct (this is usually the issue especially on older vehicles)
3. Check that the compressor is operating correctly (is it actually running and/or making any weird noises?)
4. Check that your heating system dampers are working correctly.
There are a bunch more possibilities, but they get more involved and time consuming to check out.

 

Thank you. I will check some of this possible problems.

 

To add: If the radiator fans and the fan speed controls are not working properly your AC will also be intermittent. Check for proper fan operations when using the AC.

 

Ok. I don't know to do that but l will search on youtube and try. Thanks.