Long time lurker, first time poster.
I have owned a Rocket Giotto PP for about 5 years, used daily and backflushed weekly.
This week the machine has experienced a problem, the machine heats up normally and maintains ordinary boiler pressure. When a shot is pulled the extraction starts normally (perhaps a touch slower than usual) however after about 10 seconds the boiler pressure escalates suddenly (as indicated on the front pressure gauge) - and then the boiler safety valve kicks in and exhausts the pressure (as it should in this circumstance I guess).
I have taken the sides off the machine and cleaned/descaled the water level probe, I didn't expect this to fix the problem however I knew this was a potential area requiring attention and figured may as well clean it up.
Does this behaviour point to a particular issue? Any help appreciated.
I have owned a Rocket Giotto PP for about 5 years, used daily and backflushed weekly.
This week the machine has experienced a problem, the machine heats up normally and maintains ordinary boiler pressure. When a shot is pulled the extraction starts normally (perhaps a touch slower than usual) however after about 10 seconds the boiler pressure escalates suddenly (as indicated on the front pressure gauge) - and then the boiler safety valve kicks in and exhausts the pressure (as it should in this circumstance I guess).
I have taken the sides off the machine and cleaned/descaled the water level probe, I didn't expect this to fix the problem however I knew this was a potential area requiring attention and figured may as well clean it up.
Does this behaviour point to a particular issue? Any help appreciated.

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