My AC condensate pump is full of water. What should I do?

If your residential HVAC condensate pump reservoir tank is completely full of standing water and the motor fails to turn on, you need to take immediate steps to prevent an indoor flood. First, turn off your air conditioning system immediately at the thermostat or main circuit breaker to stop any further water generation from the evaporator coil. Second, unplug the pump's power cord from the wall outlet and inspect the unit to see if it is receiving electrical power. Third, check the clear plastic reservoir tank for heavy algae slime or a jammed float switch, and check the discharge tubing for clogs or kinks. Fourth, manually scoop or siphon the standing water out into a bucket. You can troubleshoot drainage blockages easily. You can verify that the problem is resolved when cleaning clogs or replacing a faulty pump restores normal, automatic water drainage.