The very first thing you should do is find out if one or more of the lines is leaking. If the air conditioner run-off pipe is the cause of the problem, you will need to change it, you can purchase the lines at an air conditioner supply or at a hardware store. You will also need to purchase the glue for the particular line you have, remember to follow the instructions.
If when testing the pump it does not start it really is either busted or stuck. You will need to detach the pump motor from the electricity and from the tube, eliminate the top of the power pump and clean it out if the pump is stuck. You will find that if it’s pretty aged or busted now is the right time to change it out.
Last but not least, Ice may be blocking the tube. Installing new air conditioner filters can stop the icing up.