There are lots of reasons why your AC system freezes up.
Double-checking the air filter isn’t dusty and airflow isn’t restricted are the only work 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 switching on the fan. If you have a heat pump, you can switch it to heat mode until the ice is gone.
After the ice is gone, move the temp back to normal. If your system freezes again, contact Hammond Plumbing & Heating to take care of the problem.
Here are a few other reasons why your system may be freezing up.
Insufficient refrigerant—Freezing can be caused by a refrigerant leak.
What causes a leak?
- Weakened solder joints
- Resistance from piping jarring against something
- Ruptured valves
- Slack fittings
How long your equipment has been running and the location of the leak play a part in whether you should repair or replace your AC system.
Dirty evaporator coil—Throughout the seasons, the evaporator coil attracts dirt and creates troubles similar to a dirty filter. You’ll gradually receive lower airflow until your unit freezes or halts cooling. You’ll need to call Hammond Plumbing & Heating to repair the problem.
Broken blower motor or relay—A blower motor working at an incorrect speed or not turning on at all can result in freezing. It may also be sporadic, running at full speed and decelerating after it gets warm. Or a relay can make it start one time and not the following time. In either case, you will need to get in touch with Hammond Plumbing & Heating to fix the trouble.
Scheduling yearly AC maintenance might help you bypass this malfunction. Our techs will fully check and clean your unit, which usually allows us to locate small troubles before they turn into huge problems.