If your air conditioner keeps freezing up even after you’ve cleaned the coils and drain pan and checked refrigerant levels, there’s probably something else going on that’s messing with your system.

So, first off, make sure your air filter is clean because a dirty filter can block airflow, making the evaporator coil freeze up. Next, check if your blower motor is running properly; if it stops or slows down, the limited air movement will cause freezing. Also, look at the outdoor unit’s fan to see if it’s spinning like it should. if it’s not, heat won’t dissipate properly, causing cold spots. You mentioned the motor contactor might be sticking. yeah, if that relay keeps the compressor running while the blower stops, it’s a classic freeze-up cause. Another thing is the liquid line restriction; if there’s a blockage or kink in the refrigerant line, it can mess with pressure and cause ice buildup. Make sure your thermostat isn’t set too low or constantly running the AC without breaks, which can push the system to freeze. Lastly, keep an eye on humidity levels inside because high moisture can also lead to ice on the coils.

One of the most common mistakes is ignoring airflow problems like dirty filters or broken fans, which makes your evaporator coil freeze and messes with cooling efficiency. fix it by regular filter changes and making sure all fans run smoothly. Another issue is the stuck motor contactor in the outdoor unit; it keeps the compressor running when it shouldn’t, and you can fix that by having a pro test and replace that relay if needed. The third frequent problem is liquid line restrictions caused by clogs or kinks in refrigerant lines; this creates pressure drops that freeze your coil. getting a technician to flush or fix those lines usually sorts it out.

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