How to repair & check Condesate Pump - Little Gaint VCMA-15UL

This Condensate Pump is about 5 years old. The Checker Valve Adaptor clogged and caused flood in the basement. This is a simple fix if you find the motor kept turning without water removing from the transparent drain tube. The little round black plastic ball in the Checker Valve Adapter can be removed, and the pump can still eject water out for the quick fix in most cases.