So very first thing that you should check is the drain pipes. If you need to replace the air conditioners drain pipe you can purchase them at an air conditioning supply store, or a home improvement center. Be sure you follow the guidelines on the pipe glue.
If the power pump does not work, it’s either broke or stuck Should you see that it’s stuck, you will need to eliminate the top off the water pump and cleanse it out, be sure to disconnect the electricity prior to deciding to do this. If it’s quite old or broken, you’re probably best off replacing it so you don’t have to do this again in the near future.
If none of the above scenarios are the problem you most likely have ice building up this can and will block the line and prevent drainage. In most cases you can fix this problem quite easily by buying new air conditioner filters.