2. Remove the air outlet of the air conditioner. Remove the air outlet to see the location of the heating water pipe. You need to remove several fixing screws with a screwdriver and gently pull out the air outlet.
3. Remove the heating water pipe. The heating water pipe is fixed on the air outlet. You can see a slender pipe with a fixing clip fixed on the heating water pipe. You need to open the clamp with a wrench and gently unplug the heating pipe.