How to change the radiator of Pentium b70 heater?

There are two types of air conditioners for Pentium 70: manual and automatic.

Manual air conditioner needs to convert cold and hot air into warm air (red area), just turn on the fan. Of course, turn off the air conditioner compressor at this time, otherwise it will increase fuel consumption.

The automatic version will automatically switch as long as the temperature is adjusted to the temperature you want. Also pay attention to turn off the compressor to reduce fuel consumption.

The compressor control switch is an air conditioning button on the panel. As long as the light on the button is off, it means that the compressor is not working.