Why is my AC system freezing up?
There are a lot of reasons why your AC system freezes up.
Double-checking the air filter isn’t dirty and airflow isn’t decreased are the only tasks you can safely take care of on your own. If you need to replace the filter, you can accelerate the defrosting process by switching off the system and using the fan. If you have a heat pump, you can turn it to heat mode until the ice has disappeared.
After the ice is gone, move settings back to normal. If your system freezes again, contact Knochelmann Service Experts to correct the problem.
Here are several other reasons why your system might be freezing up.
Insufficient refrigerant—A frozen system may be a result of a refrigerant leak.
What creates a leak?
- Weakened solder joints
- Resistance from piping jarring against an object
- Broken valves
- Unsecured fittings
How long your system has been running and the area of the leak play a part in whether you should repair or replace your AC system.
Filthy evaporator coil—As time passes, the evaporator coil gets dirty and creates issues resembling a clogged filter. You’ll gradually lose airflow until your equipment freezes or halts cooling. You’ll need to call Knochelmann Service Experts to fix the problem.
Defective blower motor or relay—A blower motor going at the wrong speed or not working at all can result in freezing. It could also be sporadic, starting at maximum speed and decelerating after it gets too hot. Or a relay may make it start one time and not the following time. In either situation, you will need to call Knochelmann Service Experts to repair the problem.
Requesting yearly AC maintenance could help you bypass this malfunction. Our technicians will meticulously examine and clean your system, which usually allows us to catch minor issues before they become major problems.
