I have a 2024 Samsung Side-by-Side and the water dispenser stops working every two weeks. I think it's limescale because the water here is really hard. Should I use a descaler specifically made for fridges or do I risk damaging the internal filter?
The thing nobody mentions is that generic descalers can leave chemical residue in the tube, so it's better to use pure white vinegar (the cooking kind) to flush out the whole system - that's what I always recommend before running off to call a technician. If the filter's old anyway, just swap it out: it costs next to nothing and that alone should fix about 70% of clogs.
you're already using the internal filter, right? because if that's the problem then replace it every 3-4 months instead of waiting for it to get completely clogged - it's cheap and solves 90% of cases. descaler made specifically for fridges works, but honestly the simplest and safest solution is a mix of distilled water and a splash of white vinegar: run it through the dispenser tube every two weeks, let it sit for a few minutes and then rinse well. you avoid any risk to the filter and limescale won't build up. if it keeps clogging anyway, the filter probably needs changing by now - it's not damage, just wear and tear.
Limescale is indeed the culprit in most cases, especially with the hard water you've got. Before you spend money on specific descaling products, try this: unplug the water tube from the back of the fridge (turn the appliance off first), detach the tank if it's removable, and run hot water mixed with a bit of white vinegar directly through the internal tubes using a large syringe or spray bottle. Let it sit for 20-30 minutes, then rinse thoroughly with cold water. If the dispenser is still blocked, the problem might be in the internal solenoid valve of your Samsung, which is harder to reach.
On the filter thing: yeah, change it more often like they suggested, but I'd add that the real problem isn't so much the filter itself but the fact that limescale builds up in the tube AFTER the filter, in the narrow part that goes to the actual dispenser. The filter gets rid of most of the impurities, but with really hard water the limescale still gets through and crystallizes in those last centimeters, where the tube is narrower. A generic descaler shouldn't damage the filter, but honestly with water as hard as yours it'd be way more useful to install a water softener upstream, even a small one. If you don't want to spend that much, at least use distilled water in the fridge tank for a couple of cycles every now and then - it's cheap and cuts down on clogs dramatically.
The connection tube between the tank and the dispenser is often the real culprit, not just the internal filter - it accumulates limescale and debris that the filter alone can't handle. If you're changing the filter regularly but still having problems, it's worth disconnecting the tube and running a cleaning cycle with diluted white vinegar (half vinegar, half distilled water), letting it sit overnight before rinsing thoroughly. This keeps you away from the risks of generic chemical descalers and usually solves the clog for months.
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