Cut your condensate line close to your house so the water drains before freezing.
Condensate pump drain line frozen.
You can unscrew that float unit and put a bucket there to drain the condensate until the line thaws.
During periods of snow verify that snow hasn t risen to the level of the drain line where it can block it and cause further freezing.
We went outside and saw the drain line was about 2 feet long of 2 pvc mounted vertically about 6 inches off the ground.
The best way to stop condensate drain line freeze is to use weather proof sleeves placed around the drain.
The vast majority of your condensate line should be inside your home where it s warm.
The condensate pump will only come on if the outside gravity line freezes.
It pumps it out only when the drain line is frozen.
Today a plumber figured out that my heater is 90 efficient produces lots of condensate and the drain line had frozen.
If you already have a frozen condensate line this is an easy fix.
Last night my heat forced air suddenly stopped.
Shortening the drain pipe to give water less space in which to freeze can also be effective.
Just saw off the portion of the line that is frozen.
Your inside coil should have two outlets to drain condensate one running outside and the other with a float switch to shut down the unit if the outside drains clogs.