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Fault Code for Breville BES980

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  • Fault Code for Breville BES980

    Hi everyone,

    I bought 2 breville machine on auction, one is the bes980 and the other one is a cheaper model with no grinder but they are basically the same inside.

    The bes980 had some leaks at the boiler so I swapped a cable and no more leak. I was very happy until I found out it shuts off after it gets to a certain temperature (temperature sets at 93 but it keeps creeping up until 96-97 and then i have to let it cool down)

    After fiddling around I found online how to fetch the fault codes and it came up with fault code 27 and 28. I am not sure what it means and I can't find any information on the codes.

    Can anyone point me to the right direction? Once the machine is repaired i am more than happy to ship some parts from the other machine if any member needs to repair their machine btw

    Cheers

  • #2
    Error 27 : Group head temperature overshot : Group head NTC sense 10deg° over the target temperature : Group head NTC, group head element triac PCB

    Error 28 : Communication error : Main/ Panel MCU found the panel/ Main MCU no response-Main/Panel MCU found the checksum of the data transfer not correct : Check software version in service menu (to see whether if the software has been successfully programmed into both side MCU or not), connector between main/panel PCB


    Java "The data is out there" phile
    Toys! I must have new toys!!!

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    • #3
      Thanks Javaphile

      Error 28 didn't appear after reset the machine but 27 still get triggered.

      I tried to change the solenoid but that's not the issue, is changing the whole group head overkill?

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      • #4
        What is it about an over temperature alarm that makes you think you should change out the solenoid? Sounds like you should be leaving it to qualified people

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        • #5
          The more likely culprit is the group head element triac PCB. That seems to be a common problem due to moisture getting on it from leaking o-rings on the boilers. I'd replace all of them as well as long as you're diving inside.


          Java "Do 'em all, o-rings are cheap." phile
          Toys! I must have new toys!!!

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          • #6
            Originally posted by level3ninja View Post
            What is it about an over temperature alarm that makes you think you should change out the solenoid? Sounds like you should be leaving it to qualified people
            following some youtube tutorial and i am of course a beginner but you have to start somewhere.
            i bought the two machines for a really cheap price ($50 for both) and it will teach me how to service and repair a coffee machine.
            thanks for the feedback and i wish i could pay for a repairer but most around my area want $200 just to look at the machine...

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            • #7
              Originally posted by Javaphile View Post
              The more likely culprit is the group head element triac PCB. That seems to be a common problem due to moisture getting on it from leaking o-rings on the boilers. I'd replace all of them as well as long as you're diving inside.


              Java "Do 'em all, o-rings are cheap." phile
              thanks for your knowledge, i run accross old coffee machine all the time and i used to throw the duds away, and this time i got two nearly identical one with different issues so i thought i'd try to tackle a repairing projects
              i will order a whole bunch of o'rings i think 007 is the size needed.

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              • #8
                If it's the same as the 900/920 I think there's 2 different size o-rings. At least that's what I seem to recall reading in their threads. But...never having worked on them it would be a good thing to double check me on that.

                These might be helpful to you: https://coffeesnobs.com.au/documenta...-pictures.html


                Java "Good luck!" phile
                Toys! I must have new toys!!!

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                • #9
                  Boy!
                  There's a few parts in these babies...
                  Just had a quick look through the parts manuals.

                  Mal.

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                  • #10
                    Hi I have a BES980 that's been going well for a number of years.
                    Now have a 'service Err' on startup.
                    After entering the service menu (hold 1 and 2 cup buttons while pressing power for 4 seconds) and the fault appears to be A16.
                    Without having any reference to this it also appears that if I physically fiddle with the steam wand temperature probe wiring and cycle power it will start working again.
                    However as soon as I push the temperature nozzle back into the wand it faults again.
                    If anyone has a fault reference to confirm or deny that the steam wand is the culprit that would awesome. Can order the wand assembly complete and seems like a straight forward replacement once top of the machine is off.

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                    • #11
                      Originally posted by kamold View Post
                      Now have a 'service Err' on startup.
                      Err on startup is a steam wand assembly fault, usually a break in the wiring for the thermocouple in the end of the wand, as your findings have evidenced.

                      You can't order components for the inside of the wand, it just comes complete as a whole new drop-in unit. Quite a lot of wiring and connections need to be redone when you replace the wand but it's not a hard job, just can take some time.

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                      • #12
                        Thanks I took the top off and as you've presumed, the wiring is indeed snapped clean at the wand end. Will pull it all out and solder back on as a temporary measure until I can get a full wand assembly.

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                        • #13
                          Took a little while to remove and disassemble the steam wand to get the wiring but I soldered it back on and now machine is back to 100% health!
                          Much relief given the impact on sanity the daily coffee has with the house all of a sudden full of work and school from home family...

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                          • #14
                            Seems I make have made a premature declaration of health...made one cup of coffee yesterday however this morning got the same fault again.
                            I checked that the solder joints are still secure but it's still starting now with 'service Err'
                            Any ideas what the next most likely cause might be?

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                            • #15
                              Whilst the fault code is the same, it now only appears to come up when the machine is hot. If it's started from cold the machine starts up and comes up to temperature OK.
                              My feeling now is that the PCB that sits under the top of the machine would be the next best thing to try.
                              I think this is called the TRIAC PCB assembly? Does that sound correct?

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