Most mini-splits come with a remote for each indoor air handler. This makes it simple to adjust the temperature and other settings from your couch or bed. If you press a button and nothing happens, though, this can be incredibly frustrating. Fortunately, before you call an HVAC technician, there are a few ways to troubleshoot remote problems.
Dead Batteries
The first thing you’ll want to check is the batteries. If it’s been awhile since you replaced them, there’s a good chance they’re weak or dead, which could definitely cause the remote to be unresponsive. Many remotes will even have a battery light that tells you when they’re starting to go bad. And a lot of times, simply replacing the batteries with new ones will fix the problem right away.
You Put the Batteries in Backwards
If you replace the batteries and it doesn’t resolve the issue, don’t automatically assume something is wrong with the air handler. You may have accidentally put the batteries in backwards. This is why double-checking their placement is always worth the time. To do this, take the batteries out, and look inside the battery compartment for the polarity markers. You should see a plus (+) and minus (−) symbol that tells you exactly which way to insert each battery. You’ll match the positive and negative ends on the batteries with the corresponding symbols inside the compartment. Keep in mind that some remotes will turn each battery a different direction.
There’s a Blocked Signal
Mini-split remotes typically rely on infrared signals to communicate with the air handlers. Anything that blocks a signal’s path can lead to a remote that’s unresponsive. This includes furniture, plants, curtains, and other household objects. If you suspect something is in the way, simply move it to another spot to see if the location change fixes the communication problem.
You’re Too Far Away
Even if the infrared signal path is completely unobstructed, you still need to be within a certain distance for the remote to respond. For rooms that are large, you may want to experiment with how far away you can be from the air handler before the remote starts to lose its signal so that you know exactly how close to stand for the remote to work reliably.
The Remote Sensor Is Dirty
There’s a small transmitter on the end of the remote that you point toward the air handler. If the sensor becomes dirty, it may interfere with the remote’s ability to respond to your button taps. To resolve this problem, you just need to wipe the sensor with a soft, dry cloth. Don’t use a wet wipe since the moisture may seep into the remote and damage its internal components.
If you’ve tried all of these troubleshooting tips and the remote still won’t work, you need to call a professional. You may need to replace the whole remote, or the air handler itself might be the culprit. If you live in San Diego, CA or a surrounding area and need ductless mini split services, make your first call to Mauzy.