Summer days in Indiana are amazing, but there’s always the time when you need the refreshingly cold air of your AC. When you reach for the AC control, it needs to work every time. If you have an AC not working, your Nissan dealer can fix it for you. These are a few signs your AC is on the fritz.
No Air From the Ducts
If you can hear your AC running, but no air is blowing into the cabin, your ducts could be blocked. Air is drawn into your AC via a vent just underneath your windshield. This air passes into the AC, where the moisture is removed, the air is chilled and then blown into the cabin. Dirt, leaf particles, and other debris can also enter the vent and cause blockages over time. This will reduce or prevent air movement.
Another possible cause of the problem is a damaged AC fan. The fan switches on to blow the cold air into the cabin. If the fan fails due to damage or electrical problems like a blown fuse, it won’t circulate any air. We’ll examine your AC system to identify the cause of the problem and then we’ll repair it.
Noises From the AC
Your AC makes barely any noise when it’s working. If you listen closely, you’ll hear the tiny click-click of the AC compressor switching on and off as the air is chilled. You’ll also hear the slight sound of the fan if it’s set to its highest setting. Strange noises like rattling, clunking, or grinding are abnormal and a clear sign that something is amiss in your AC.
Rattling noises are usually due to dirt or debris. As we saw above, these substances can enter the ducts and will be blown around by the air. Clunking noises mean one of the compressor bearings has failed, and this can cause the compressor to fail too. Grinding noises suggest worn or damaged parts that need to be checked. Our technicians will examine your AC and fix the problem.
Cold Then Hot AC
When you set the AC temperature, it should stay in that position until you change it. If you’re driving and your AC starts blowing cold air, then rapidly switches to blowing hot air, you have an AC problem. The usual cause of this problem is a failing expansion valve. The expansion valve in the AC is responsible for passing cold liquid refrigerant into the evaporator.
The expansion valve can become worn over time, and it can also be affected by liquid dripping onto it. Any liquid on the expansion valve will freeze due to the low temperate and block the refrigerant flow. Without refrigerant, your AC will blow hot air. We’ll investigate and fix the problem for you.
Enjoy your summer with a healthy AC. Visit our service department today at Ed Martin Nissan.
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