Overview
Smeg makes three kinds of coffee machine that people descale: the retro espresso machine with a portafilter, the drip filter coffee maker and the fully automatic bean-to-cup machine. They look as though they belong to one family, but each descales differently. The espresso machine runs a programme from a button sequence and a steam knob. The drip machine flashes an icon and starts a mode from two buttons. The fully automatic machine uses the lungo button and a middle button, then tells you the result with the colour of its lights.
This guide covers all three, using Smeg's own manuals for the ECF01 espresso machine and the DCF02 drip machine, and a published walk-through for Smeg fully automatic machines. It explains which descaler to use, what the lights mean, how often to do it, what goes wrong and when the problem is not scale.
If your Smeg is faulty rather than due for a descale, see the signs near the end. For a repair, see coffee machine repair in Dubai, or for a portafilter machine espresso machine repair. For other makes there is a general guide to descaling a coffee machine.
How to descale a Smeg machine: the short answer
Retro espresso (ECF01 style), drip filter (DCF02 style) or fully automatic. The steps differ.
The ECF01 shows an orange light. The DCF02 flashes a DESCALING icon. The fully automatic machine shows a descaling light, and if it flashes you must descale before making more coffee.
Smeg's manuals say to use descaling products recommended by Smeg, and warn that others may damage the machine.
Mix water and descaler as the pack states and pour it into the tank, up to the maximum mark.
A container of at least 1.4 litres is used in the fully automatic walk-through. On the ECF01 you put a container under the frothing nozzle.
Hold the buttons your model uses. The sequences are below.
The machine runs the solution through and pauses on its own.
Empty the tank, fill it with fresh water to the maximum mark, and run the rinse cycle.
The orange light goes off, the icon disappears or the buttons turn white when it is finished.
The sections below take each type in turn, with the lights and the mistakes to avoid.
Which Smeg do you have?
Look at the base or back of the machine for the model code, such as ECF01, DCF02 or BCC. Search the code with the word manual and compare the steps with those below. The model names on the plate matter more than the colour of the machine, because Smeg sells the same body in many colours.
What Smeg says about the descaler
The ECF01 and DCF02 manuals say the same thing in the same words, and it is worth reading before you shop.
If your machine is under warranty, ask the dealer which product Smeg approves. If it is out of warranty, read the pack for coffee machines, use the pack's dose and never mix products.
Searches for a Smeg recommended descaler have a plain answer: Smeg's manuals say to use one that Smeg recommends, and the dealer or Smeg's support can name it for your model.
When to descale
The fully automatic walk-through adds an average of about every two months, and says hard water means more often. That is a retailer's advice and not a Smeg figure, so follow the machine's own signal where it has one. For the DCF02, set the water hardness correctly in the menu. The machine uses that setting to decide when to ask.
A signal that is ignored is a job postponed. The machine does not forget, and the scale keeps building.
What you need
The ECF01 manual and the DCF02 manual both warn that the descaler is acidic. Handle it as the pack says, and keep it away from children and pets.
Descaling a Smeg retro espresso machine (ECF01)
The ECF01 manual gives the sequence below. The manual page dropped some icon and button names, so we describe each stage in words and ask you to match it to the picture in your own manual.
Descaling is needed when the orange light comes on.
Fill the water tank with the water and descaler solution.
Use the ON/OFF switch.
Take out the portafilter. Place a container under the frothing nozzle.
An indicator light stays on steadily when the machine is ready.
Press and hold the descaling button, shown by an icon in the manual, for 10 seconds, until the three buttons flash in sequence.
Turn it to the position shown in the manual.
Press the button shown in the manual. The machine runs automatic rinse cycles at intervals until the tank is empty.
During descaling, close the steam knob now and then, so some solution comes out of the boiler outlet.
When the tank is empty, the cycle stops and the orange light comes on.
Rinse it under running water.
The rinse cycle
Fill the tank to the maximum mark and put it back.
Place an empty container under the frothing nozzle and set the steam knob to the position the manual shows.
To start the rinse.
Close the steam knob now and then during the rinse, to flush the boiler outlet.
The rinse is complete when the tank is empty and the orange light goes out. Turn the steam knob back to its rest position.
If you are not sure which button or position your machine's manual shows, stop and check. Do not press buttons at random during a descale.
Descaling a Smeg drip filter machine (DCF02)
The DCF02 manual describes a much simpler routine, driven by an icon on the display.
The DESCALING icon flashes when descaling is due. The machine decides this from the water hardness set in the menu. You can still brew while the alarm is on, but run a cycle when prompted.
Pour water and a Smeg-recommended descaler into the tank up to the maximum level, using the amount the descaler's maker recommends.
Take out the paper filter and any grounds, and place the jug in position.
Press the two buttons shown in the manual together for 5 seconds. The button LEDs flash.
The DESCALING icon keeps flashing until the cycle finishes.
When the cycle ends, the display returns to the clock and the icon disappears.
Run a rinse as the manual describes in its section on rinsing the internal circuits.
If you press the wrong pair, nothing harmful should happen, but check the manual's diagram before you try.
Because the DCF02 bases the alarm on the water hardness you set, check that setting once. A machine set too soft asks too late.
Descaling a Smeg fully automatic machine
This sequence comes from a retailer's walk-through for Smeg fully automatic machines. It matches the lungo and middle button layout of the BCC series. If your machine's buttons differ, use your manual.
Put a container of at least 1.4 litres under the coffee outlet.
Fill the water tank with fresh water to the Max mark.
Add the descaler to the water, in the amount the pack says.
Press the lungo button and the middle button together for 3 seconds.
The lungo button flashes orange and the descaling light stays on while the programme runs.
Descaling is done when the lungo button and the descaling indicator turn white.
The rinse
Put it back under the outlet.
Fill the tank to the Max mark.
To start the rinse.
The lungo button flashes white and the indicator stays on during the rinse.
The rinse is finished when the tank is empty and all the buttons are white.
The walk-through gives no total running time. Allow half an hour or more, and stay within earshot so you can empty the container.
Reading the lights: orange, white and flashing
The colours come from the manuals and the walk-through, and your machine's may differ slightly. If a light you see is not in this table, check the manual or message us a photo.
Rinsing and the first cup
Smeg's descaler is acidic, so a thorough rinse protects both the seals and your cup.
Cleaning your Smeg between descales
Descaling does not clean coffee oil or milk residue. Do both jobs, at their own intervals.
Mistakes that damage a Smeg
The one we meet most is ignoring the orange light on the espresso machine until the flow has nearly stopped. Descaling at the first light is easier than descaling after months of delay.
Troubleshooting a Smeg descale
The machine will not enter descaling mode
The cycle stops partway
The orange light stays on after the rinse
The rinse did not finish, or the tank was not filled to the maximum mark. Run the rinse again until the tank is empty. If the light stays, the cycle did not register, and a repeat of the full programme may be needed.
The fully automatic still flashes
A flashing descaling light means the machine will not brew until it is descaled. Run the full programme, with the rinse.
The retro espresso machine gives no steam or water
Check that the steam knob is in the position the manual shows for the stage you are on. A knob in the wrong position stops the flow.
Coffee tastes sharp afterwards
Run two or three more tanks of fresh water through, including the steam wand or frothing nozzle.
When descaling is not the answer: call a technician
We repair Smeg coffee machines at your home or office in Dubai. The visit is AED 100 plus VAT, the repair is AED 80 to AED 400 depending on the fault, and the price is agreed before work starts. Parts are genuine and a month of cover applies. See coffee machine repair.
Why scale builds up differently in each Smeg
Scale is mineral left behind when hot water evaporates or cools. Calcium and magnesium in the water settle as a hard white crust on whatever is hottest, and the hottest parts of a coffee machine are the ones that matter most: the heater, the boiler and the narrow pipes leading from them.
The retro espresso machine and the fully automatic machine both push water through small passages under pressure, so a thin layer of scale there cuts the flow quickly. Coffee comes out slower, cooler and with a weaker body, and you may hear the pump working harder. The drip machine has a simpler path, but its heating element still gets coated. A coated element takes longer to bring the water to temperature, and the jug of coffee ends up lukewarm.
The descaler is an acid. It dissolves the mineral layer so the water carries it out. It has no effect on coffee oil, milk or mould, which need their own cleaning. That is why a machine can be freshly descaled and still taste bitter: the scale is gone but the oil in the brew path is not.
How hard water changes your schedule
The harder the water, the faster scale forms, and the more often the machine asks for a descale. The DCF02 manual builds this into the machine: you set the water hardness in the menu and the machine decides when to flash the DESCALING icon. If the setting does not match your water, the reminder comes at the wrong time.
A water filter cartridge slows scale but does not remove the need to descale. If your Smeg model accepts a filter, check the manual for how and when to change it.
Before you start: a five-minute preparation
Most descaling problems come from rushing the start. Take five minutes first.
Note the code on the base or back, so you follow the right sequence.
Search the code with the word manual and keep the page open on your phone. Match each icon with the one on your machine.
Discard old water, remove any capsule or paper filter, empty the grounds container and the drip tray.
Put the machine on a surface that tolerates acid, with a tray or cloth under the container. Keep descaler away from natural stone and polished metal.
Read the pack and measure the dose. Mix it with the water in a separate jug and then pour it into the tank, so the tank is not overfilled.
Do not start if you need the machine in the next hour. A descale that is interrupted leaves solution in the lines.
If the descale light is steady, you have time to plan. If it is flashing on a fully automatic machine, the machine will not brew until you descale, so clear the time now.
Safety with acid descaler
Both Smeg manuals warn that the descaler is acidic and can irritate skin and eyes. That is standard for descaling products and it deserves respect.
Because the solution has been through the machine, it carries dissolved scale. Treat it as waste, not as something to reuse on another appliance.
Descale, clean and rinse: which job, how often
The signal-based approach is what both Smeg manuals describe. If your machine has no signal, a calendar reminder every two or three months is a practical stand-in. Shorten the gap if you notice the flow slowing.
Buying a second-hand Smeg or inheriting one
A Smeg of unknown history is a machine of unknown scale. If you buy one second-hand, or receive one from a relative, treat the first descale as a reset.
If the machine will not enter the descaling mode, leaks, or gives no heat, book a visit rather than forcing it.
Ask the seller for the model code and the date of purchase if you can. A Smeg still under warranty is best taken back to the dealer for any fault, and a machine with a missing manual is easy to replace with a download. Keep the descaler pack with the machine, so whoever uses it next knows which product it was run on.
Leaving the machine for a few weeks
If you travel, a Smeg left with water in the tank grows film and smells when you return.
If the machine has been sitting a long time and the orange or descaling light was already on before you left, descale it before use.
How to read the Smeg manual for your model
Smeg's manuals share a layout, and the descaling steps sit in a section called descaling, usually after the cleaning section. Knowing how to read it saves guesswork when this guide and your machine disagree.
If your manual and this guide differ, the manual wins. We wrote this from the ECF01 and DCF02 manuals and a fully automatic walk-through, and newer models may change a button or a timing.
A simple descale log
A short note after each descale shows if your schedule fits your water. Keep it in your phone.
If the gap between descales keeps shrinking, shorten your reminder. If the light comes back within days of a descale, scale is probably not the cause, and a technician should look at the machine.
Frequently asked questions
How do I descale a Smeg coffee machine?
Use a Smeg-recommended descaler, mix the solution as the pack says, pour it into the tank, start the descaling mode for your model, let it run, then rinse with fresh water to the maximum mark.
How often should I descale a Smeg?
When the machine signals. A retailer walk-through suggests about every two months for a fully automatic machine, and more often in hard water.
What descaler does Smeg recommend?
Ask your dealer or Smeg for your model.
Can I use Durgol or NoKalk?
A walk-through for the fully automatic machine uses Durgol Universal. Under warranty, ask the dealer. Otherwise read the pack for coffee machines.
How do I descale a Smeg BCC02?
The BCC series is a fully automatic machine. Press the lungo button and the middle button together for 3 seconds, as the fully automatic steps above describe, and check your manual for your model.
How do I descale a Smeg ECF01?
Wait for the orange light, put solution in the tank, remove the filter holder, place a container under the frothing nozzle and hold the descaling button for 10 seconds until the three buttons flash. The steps are above.
What does the orange light on my Smeg mean?
On the ECF01 it means descaling is needed. It also comes on when the descaling cycle stops with an empty tank.
Can I still make coffee with the descale light on?
On the fully automatic machine, a steady light leaves a few cups. A flashing light stops brewing until you descale.
Do I need to rinse?
Yes. The manuals includes a rinse with fresh water. Smeg's descaler is acidic.
The cycle will not start. What now?
Hold the buttons for the full time, check that the tank holds solution and check that your model uses that sequence.
Is it safe to touch the descaler?
It is acidic and can irritate skin and eyes. Follow the first-aid instructions on the pack.
Who repairs Smeg coffee machines in Dubai?
One Click Dubai sends a technician the same day. Message us on WhatsApp at +971 55 209 9785. If your machine is under warranty, contact the dealer first.
A technician can find the cause on site. The diagnostic is AED 100 plus VAT, and repairs carry a 1-month warranty.
