Tempest I have a video, I will try to figure out where to host it and share in a follow up comment.
Upload video to YouTube as unlisted, then simply paste the link to it hear and it will magically appear.
I have added 2 arrows and numbers to the photo below. 1 is the vacuum breaker vent tube and it doesn’t lead to the tank, but might be hissing.
The tube connected to the metal 4 way connector you indicated with an arrow doesn’t look opaque, but can be the only tube making the tank very hot. Water from this tube should be cold as it vents pressure when the pump runs to limit the maximum brew pressure.
2 indicates an elbow fitting which may be leaking, could even be cracked…sometimes these leaks will happen when cold and cease when hot and everything has expanded.
You don’t mention the limit stat tripping so I’ll assume the brew boiler isn’t getting too hot…So
- There is a leak on the brew boiler - Identify by running up from cold with the top off and observe. Then depending on the leak report back and we can tell you how to fix
- It looks like the expansion valve might be leaking - Open (unscrew the end bit after removing the tube) and clean pad by unscrewing end, or replace. Reset pressure using a blind filter and running a shot, set the max pressure to 9 bar by turning the end part of the expansion valve
- Are you using good water, low in limescale, what water exactly are you using? It might mean more maintenance is required.
There’s nothing to be afraid of, but it needs fixing or the problems will get worse and more expensive. At the moment worse case scenario, you are in for around a £30 fix cost in parts. If you need any parts, you might not.
