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AC Float Switch Level Sensor Triggered

When your air conditioner is hard at work to keep you cool, it produces a whole lot of water. As your AC removes humidity from the air that flows through the unit, it keeps moisture out of your home. Should the condensate removal system become clogged, there is a safety overflow pan that collects this water. The pan float switch (or condensate switch) is a component of the drain pan with a very special job to do. It reduces the risk of property damage by disabling the source of the water until corrections are made.

Time to Inspect your AC Float Switch

How does a float switch work? In simple terms, it helps to prevent the drain pan from overflowing if your system malfunctions. If the drain pan fills with too much water, the float switch senses the water level and shuts off the compressor. And there’s a bonus: This little guy also helps prevent mold growth! Acting as your system’s safety net, the pan float or condensate switch ensures that damage is kept to a minimum if there’s an overflow.

What triggers a float or condensate switch? Rising water level that’s often traced to a clog, leak, or broken AC drain line due to buildup of mold and mildew. When any of these lead to a water overflow, the pan float switch will trigger to shut down your system — and then it’s time to call in the experts.

Signs it’s time to call in a technician

When your condensate switch is triggered, you’ll need to call a technician to come over and take a look at your system. Watch for these signs that your pan float switch has triggered:

  • The cooling system suddenly stops working

  • You can see water in the overflow pan (it should always be dry)

How Does an AC Float Switch Trigger Repair Work?

Get an assessment of your air conditioning system

An HVAC specialist will assess your air conditioner and determine the reason that your AC float switch was triggered. Issues that cause a pan float switch to trigger include a clogged drain pan, a clogged or leaking drain line, or a leaking part inside your AC system. Depending on the source of the issue, your technician will discuss what went wrong and how to have it repaired if necessary.

Repair your air conditioner and reset your AC float switch

An HVAC technician will fix your air conditioner. Since there are a couple of problems that could be at play, a pan float switch problem is a bit more complex than it seems. Your technician will get to the bottom of it! Once the issue is sorted, the drain pan will be emptied and your AC float switch will return to its normal self. How long this takes depends on the level of complexity of your AC repair and the service provider and their schedule.

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