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Fixing a Breville BES920 steam boiler issues (descale -> 'vALv' error + burnt probe?)

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  • #16
    Originally posted by yojabbajabba View Post
    I'm struggling to find this write-up - could you please direct me to it?
    Agree. I would like to see this, too. While I have not been victim to needing it, plenty of others have. I would at least like to know where to point them when they need help.

    -Peter

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    • #17
      I would suggest doing a manual flush of the steam boiler, cleaning the probes, replace all the hot orings and then reset the descale flag. Don't even try and do it the Breville way. You can find out to do this here
      Last edited by Javaphile; 15 April 2019, 10:24 PM. Reason: Commercial link removed

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      • #18
        Originally posted by OutwestCoffee View Post
        I would suggest doing a manual flush of the steam boiler, cleaning the probes, replace all the hot orings and then reset the descale flag. Don't even try and do it the Breville way. You can find out to do this here
        Many thanks for the advice. The link to the resetting of the ValV error flag in the article links to the Wordpress login page. Is there an alternate way to see that article?
        Last edited by Javaphile; 15 April 2019, 10:24 PM. Reason: Commercial link removed

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        • #19
          Cut it and paste it here... So we all can see it. Though, I think it's on here somewhere.

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          • #20
            This is how I do steam boilers:

            Step 1: Remove probes, NTC, steam tap tube and anti-vac valve.

            Step 2: Take everything removable off the machine then flip it upside down and let all the water out of the boiler. You'll need to flip it fast and also hold onto the top cover to stop is flopping around.
            Builds good upper body strength doing this a few times.

            Step 3: Siphon or funnel in descaler, allow to soak for a day.

            Step 4: Flip machine again and drain out descaler.

            Step 5: Siphon or funnel in fresh water then flip and drain. Do this again. This is generally enough to flush any remaining sediment and taste out.

            Step 6: Add 200ml or so of fresh water. This means the element is submerged on power up and the tiny steam pump has less work to do. The machine shouldn't power the steam boiler element if it senses both long probes are dry but better to be safe.

            Step 7: Clean probes and replace all boiler o-rings, don't forget about the heat exchanger o-rings as they're the most important ones. Power up and away you go.

            Regarding resetting the descaling alarm manually, I'll check tomorrow and see if I'm allowed to disclose how to do this as it may be restricted information (pretty sure it isn't but I don't feel like being sued).

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            • #21
              How breville dup express machine steamer not working after descaling

              Originally posted by westCoffee View Post
              I would suggest doing a manual flush of the steam boiler, cleaning the probes, replace all the hot orings and then reset the descale flag. Don't even try and do it the Breville way. You can find out to do this here
              How do I flush the boiler replace orings and clean probes as I have the same problem of steamer not working and not flashing? Used the hard copy manual that came with the machine to descale

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              • #22
                Originally posted by noidle22 View Post
                Regarding resetting the descaling alarm manually, I'll check tomorrow and see if I'm allowed to disclose how to do this as it may be restricted information (pretty sure it isn't but I don't feel like being sued).
                And?
                thx.

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                • #23
                  Originally posted by nicfortin View Post
                  And?
                  thx.
                  Easy way to do it without going into the service menu is to just turn the machine on and off 5 times after finishing the descale. It should go away.

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                  • #24
                    Is that at the wall or the power button?

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                    • #25
                      Originally posted by level3ninja View Post
                      Is that at the wall or the power button?
                      Just the power button on the machine. Give it 5-10 seconds before you turn it off to make sure it's properly booted otherwise it might not register.

                      If the warning doesn't go away after the 5 cycles, it means the descale procedure hasn't been completed properly, at least according to the control board.

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                      • #26
                        OP, any luck on this? I have just run into the exact some problem and would like to get an idea as to whether I can do some kind of repair by myself.

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                        • #27
                          Originally posted by noidle22 View Post
                          Step 1: Take everything removable off the machine then flip it upside down and let all the water out of the boiler.
                          Step 2: Flip machine again and drain out descaler.
                          Step 3: ...then flip and drain. Do this again.
                          I've been descaling my machine daily during COVID lockkdowns and you should see me back and bicep muscles!

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