About a week ago i noticed my sage dual boiler was producing more steam pressure than normal, and then when i turned the machine off (button in the machine) the machine appeared to be off but the steam boiler still seemed to stay hot and the machine would hiss and gurgle so started turning it off at the plug.
Yesterday i descaled the machine thinking the staying on could be due to some scale clogging something up. Machine descaled, i got the vALv error but after tipping the machine backwards and forwards some more water came out (with a few small bits of scale) and then managed to proceed without the error and complete the cycle.
Turned the machine on an no steam at all, just the 3 beeps. I have done the following and none have resolved the issue:
Repeated the descale but this time with just water
Drained the boilers a few times (the coffee boiler water comes out hot but the steam boiler water is cold)
Reset the machine (1cup and power button)
Cleared all of the error codes
Left the machine off (turned off at the plug) overnight (with boilers drained)
Opened up the machine and cant see any problems with o rings on the steam boiler
Cleaned the steam boiler sensors
Is there anyone that has come across this issue before and managed to fix it themselves? I've read various forum posts and no-one ever seems to say what the underlying issue was.
The only thing that looks odd in the machine is the top of the steam boiler looks like something has leaked from it and burnt on but there are no scale marks that would indicate this has been a long term leak. Ignore any water you can see in the pic as that was from me disconnecting the tube that goes from the steam boiler to the coffee boiler while the coffee boiler was hot and it squirting everywhere. Cant figure out how to attach photos in this forum so here is a link https://photos.app.goo.gl/ASskH3hph5DHu5RXA
Any help appreciated otherwise i'll be calling around coffee repair shops on Monday (if any are even open with current Covid-19 restrictions in UK).