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Réglage de la dureté sur le lave-vaisselle : toutes les marques

Le lave-vaisselle adoucit l'eau avec du sel et une résine ; le réglage de dureté indique la fréquence de régénération. Trop bas, le calcaire reste sur les verres ; trop haut, on gaspille du sel.

Les tableaux viennent de la notice du fabricant pour la gamme indiquée sous chaque tableau. Cherchez la dureté de votre ville, puis votre marque.

Trouver la dureté de votre ville →

Bosch

Water hardness setting H00-H07 (BSH 'Overview of water hardness settings')

Plage de dureté (°dH)mg/LTel qu'imprimé dans la notice
H000–6,20–1110 - 1.1 mmol/l
H016,7–7,8120–1391.2 - 1.4 mmol/l
H028,4–10,1150–1801.5 - 1.8 mmol/l
H0310,6–11,8189–2111.9 - 2.1 mmol/l
H0412,3–16,2220–2892.2 - 2.9 mmol/l
H0516,8–20,7300–3693.0 - 3.7 mmol/l
H0621,3–30,2380–5393.8 - 5.4 mmol/l
H0730,8–49,8550–8895.5 - 8.9 mmol/l

Comment le régler: Model-dependent. SMS46NI20Q quick guide: press the power button, hold the programme button A and press the second button repeatedly until the display shows H:xx, release, programme button A flashes, press programme button C repeatedly until the right level, save by pressing the confirm/start button. Bosch UK web page (other models): hold Setup (or SpeedPerfect/VarioSpeed) 3 s, press Start repeatedly to the H number, hold Setup 3 s to save. Some models vary; see the instruction manual.

Source: Bosch SMS46NI20Q quick reference guide, doc 9001972378 rev B (BSH); year not printed in extracted text. Same H00-H07 mmol/l scheme appears in the German short guide SMV46KX14E (doc 9002007325) and other BSH quick guides, but its table could not be extracted. Step text: https://www.bosch-home.co.uk/en/c/spotlight/bltfa17db9e446d8122/customer-service/dishwasher-hub/water-hardness-setting

Miele

Water hardness level, set in programming/commissioning menu in deg dH (G 7000-series with AutoDos)

Sur les lave-vaisselle Miele, on saisit directement la dureté (1–70 °dH) : indiquez les °dH de votre eau (°fH ÷ 1,785).

Comment le régler: At first start-up the display shows the water hardness screen: select your level and confirm with OK; later via Settings > Water hardness, select level, confirm OK. If hardness fluctuates, set the higher value (example in manual: 10-15 deg dH -> set 15).

Sel: Water softening needed above 0.9 mmol/l (5 deg dH). If water is constantly below 0.9 mmol/l (5 deg dH) no salt is needed and the salt indicator switches off when the hardness is set accordingly. Combination detergents can replace salt below 3.8 mmol/l (21 deg dH).

Source: Miele operating instructions G 7960/G 7965/G 7969, M.-Nr. 11 831 681 (en-SA, HG07); second manual G 7216 en-CA M.-Nr. 12 779 740: https://media.miele.com/downloads/03/63/01_C7F138387F5D1EDFAE8EF4A4FCFD0363.pdf

AEG / Electrolux

Water softener level 1-10 (default 5)

Plage de dureté (°dH)mg/LTel qu'imprimé dans la notice
10–40–71< 4 °H, < 0.7 mmol/l
24–1071–1794 - 10 °H, 7 - 18 °fH
311–14196–25011 - 14 °H, 19 - 25 °fH, 1.9 - 2.5 mmol/l
415–18268–32115 - 18 °H, 26 - 32 °fH, 2.6 - 3.2 mmol/l
5 (factory)19–22339–39319 - 22 °H, 33 - 39 °fH, 3.3 - 3.9 mmol/l
623–28411–50023 - 28 °H, 40 - 50 °fH, 4.0 - 5.0 mmol/l
729–36518–64329 - 36 °H, 51 - 64 °fH, 5.1 - 6.4 mmol/l
837–42660–75037 - 42 °H, 65 - 75 °fH, 6.5 - 7.5 mmol/l
943–46768–82143 - 46 °H, 76 - 83 °fH, 7.6 - 8.3 mmol/l
1047–50839–89347 - 50 °H, 84 - 90 °fH, 8.4 - 9.0 mmol/l

Comment le régler: Not given on the article; refers to the model's user manual (older models: dial on tub wall or button sequence).

Sel: Level 1 (< 4 °dH): 'do not use any salt'.

Source: Electrolux UK 'Before using your Electrolux dishwasher for the first time' and AEG UK equivalent https://support.aeg.co.uk/support-articles/article/before-using-your-aeg-dishwasher-for-the-first-time (current support pages, 2026)

Beko

Water hardness level 1-6 (programme indicator P1-P5)

Plage de dureté (°dH)mg/LTel qu'imprimé dans la notice
1st0–40–710-5 °E, 0-4 °H, 0-8 °F
2nd5–789–1256-9 °E, 5-7 °H, 9-13 °F
3rd8–12143–21410-15 °E, 8-12 °H, 14-22 °F
4th13–15232–26816-19 °E, 13-15 °H, 23-27 °F
5th16–19286–33920-24 °E, 16-19 °H, 28-34 °F
6th20–50357–89325-62 °E, 20-50 °H, 35-90 °F

Comment le régler: Switch on with On/Off while holding the Programme Selection key; hold until the stored level shows in the programme indicator and Start/Pause flashes; adjust with Programme Selection/Delayed Start per table; press Start/Pause/Cancel once to store; Start icon stays lit; turn off with On/Off.

Sel: Below 8 °dF (about 4.5 °dH) 'no need to use salt'. Same manual: water above 6 °dH must be softened; above 90 °dF or well water use external filter.

Source: Beko DIN15210 dishwasher user's manual (Beko UK, document undated in text)

Hoover

Softener level S0-S5 (indicator lights P1-P5)

Plage de dureté (°dH)mg/LTel qu'imprimé dans la notice
S00–30–540-5 °fH, 0-3 °H; no salt
S14–971–1616-15 °fH, 4-9 °H
S210–16179–28616-30 °fH, 10-16 °H
S3 (factory)17–25303–44631-45 °fH, 17-25 °H
S426–33464–58946-60 °fH, 26-33 °H
S534–50607–89361-90 °fH, 34-50 °H

Comment le régler: Switch on; press 'Progr.' and 'ON/OFF' together for 5 s; audio signal, all lights flash 5 s; then lights show current level; press 'Progr.' repeatedly to choose (P1=S1 ... ; all lights off = S0); turn off with ON/OFF held.

Sel: S0 (0-5 °fH / 0-3 °dH): regenerating salt 'NO'.

Source: Hoover H DISH 300 HDIN 2L360PB-80 instruction manual (product code 32900769)

LG

Softening system level H0-H4

Plage de dureté (°dH)mg/LTel qu'imprimé dans la notice
H00–40–71<4 °d, <5 °e, <7 °f, <0.7 mmol/l
H14–771–1254-7 °d, 5-9 °e, 7-13 °f, 0.7-1.3 mmol/l
H2 (factory)7–14125–2507-14 °d, 9-17.5 °e, 13-25 °f, 1.3-2.5 mmol/l
H314–21250–37514-21 °d, 17.5-26 °e, 25-38 °f, 2.5-3.8 mmol/l
H421–…375–…>21 °d, >26 °e, >38 °f, >3.8 mmol/l

Comment le régler: Press Power and Half Load together (current value shows); press Delay Start to choose the value (H0-H4); press Start to save; the unit powers off after saving.

Sel: Set H0 if used without salt so the salt icon does not stay lit; H0 = hardness < 4 °d.

Source: LG dishwasher owner's manual XD64*, MFL70282406 Rev.00_030218 (2018)

Frigidaire

No hardness setting on the support page; detergent amount by grains per gallon

Plage de dureté (°dH)mg/LTel qu'imprimé dans la notice
4 tsp (first line)0–2,90–52Soft 0-3 grains/gal
6 tsp (second line)3,8–7,768–137Medium hard 4-8 grains/gal
8 tsp (full)8,6–11,5154–205Hard 9-12 grains/gal

Comment le régler: Fill the main-wash dispenser cup to the line for your water hardness.

Source: Frigidaire owner centre 'Dishwasher - Dispenser and Detergents Guide' (current)

Marques sans tableau de dureté