The anti-scale light on my steam generator iron stays on after descaling
Home Nura guide — category: Irons & Steam Generator Irons
Diagnosis
A steam generator's anti-scale light often stays on after descaling because the maintenance counter was not reset, or because the boiler still holds scale or descaler residue. Rinse thoroughly, then follow the reset procedure in the manual.
Possible causes
- Maintenance counter not reset — the reminder relies on a counter that stays lit until it is deliberately reset.
- Incomplete descaling — scale remains in the boiler and the appliance keeps signalling that maintenance is needed.
- Insufficient rinsing — descaler residue is left in the boiler and can keep the alert on or affect steam output.
- Worn anti-scale cartridge or cassette — the built-in filter is saturated and no longer protects the unit.
Recommended steps
- 1Unplug the unit, let it cool completely and never unscrew the boiler cap while it is hot or under pressure.
- 2Re-read the manual's descaling procedure: approved product, dosage, soaking time and the recommended number of rinse cycles.
- 3Rinse the boiler several times with clean water by filling, swirling and emptying it until no residue comes out.
- 4Repeat a full descale if scale-laden water still drains out, then rinse again before putting the appliance back into use.
- 5Reset the light as the manual describes, often by holding a button, and replace the anti-scale cartridge if your model has one.
Repair or replace?
If the light stays on after careful descaling and a reset, or the boiler is heavily scaled, repair is costly. On an older unit used with very hard water, replacing it is often the better choice.
If you decide to replace it
Irons & Steam Generator Irons: the shortlist from our buying guide
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Best overall
Philips PerfectCare 8000 Series PSG8160/30
8.5 bar, 170 g/min continuous steam, a 1.8 L tank and OptimalTEMP: no temperature to set.
Photo: © Philips
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Best value
Philips PerfectCare 7000 Series PSG7130/20
8 bar, 120 g/min, a 1.8 L tank, OptimalTEMP and auto shut-off after 10 minutes.
Photo: © Philips
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The only truly smart one
Laurastar Smart U
Ironing system with an active board and a Bluetooth tutorial app, for a premium finish.
Photo: © Laurastar
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Other common problems in this category
These issues affect the same type of appliance — each one comes with a diagnosis and the recommended steps.
- Irons & Steam Generator IronsMy steam generator iron spits water onto my clothes
- Irons & Steam Generator IronsThe soleplate of my iron keeps snagging the fabric
- Irons & Steam Generator IronsMy steam generator iron spits brown drops that stain clothes
- Irons & Steam Generator IronsThe soleplate of my steam generator iron sticks to fabric and leaves shiny marks
Frequently asked questions
Usually, yes, if the failure shows up during the warranty period and isn't caused by misuse. A product in the Irons & Steam Generator Irons category bought new from an authorized retailer normally comes with a manufacturer's warranty: check its length in the manual or on the brand's website. Consumer protection rules also vary by province and territory, so keep your proof of purchase.
If you're still within the store's return window, a return or exchange is usually the fastest fix. After that, the manufacturer's warranty takes over: its customer support can arrange a repair or a replacement. Even outside the warranty, the manufacturer can often repair the device for a fee. Either way, keep your proof of purchase.
Our public methodology lowers the Nura Score /10 of any model in the Irons & Steam Generator Irons category whose recurring failures are documented in owner reviews. A model that breaks down too often never tops our rankings, whatever the brand.
Generally, yes. Routine maintenance, such as cleaning, replacing a gasket or recalibrating, is part of normal use and doesn't usually affect your warranty. Irreversible changes to the hardware are what can cause problems. For a product in the Irons & Steam Generator Irons category, stick to the steps described in the manufacturer's manual and read the warranty terms before going any further.
When a product fails in its first few months of normal use, the cause is usually a manufacturing defect. Contact the seller or the manufacturer with your proof of purchase and a description of the symptom: for a model in the Irons & Steam Generator Irons category that is still under warranty, this is the typical case for a free repair or replacement. Warranty terms vary by brand, so read yours.