The covers are not the problem. The metal connectors in them likely are. Pull the wires off the heating elements and thermostats (take a digital photo before beginning), and clean teh terminals with scotchbrite and use a small wire brush to clean the spade clips. use an electrical contact anti-oxident on them and reassemble. You may need to crimp the female spade clips just a bit for a tight fit.
I doubt that your heating element is shorting. It it did you would be having tripped breakers. The heating element connectors which you mentioned can be the issue. The high temperatures involved reduce the spring tension on the connector which in turn raises the resistance and hence the temperature at the connection. This causes a thermal runaway at the connection. The fix is to replace the connectors on the wires hopefully before the blade connectors on the boiler are damaged beyond use.
I've got a Rancilio Silvia V1 that's starting to act up: the heating element seems to be shorting out. It intermittently stops working but comes back on if I give the machine a little smack.
The last time I had her open, the plastic wire connection covers appeared yellow and brittle. Could a fix be as simple as replacing the wire connectors? Or is this symptomatic of a larger problem?
Thanks in advance for any light that can be shed on this!
Thanks everyone for all the help! Turned out to be the 140 deg thermostat.
After cleaning several contacts, I noticed one of the male posts on the thermostat had some wiggle to it. I powered it up and carefully moved the wire back and forth. Sure enough, the heating element light flicked on and off.
Makes sense why my "comes back on if I give the machine a little smack" worked. The wire that went into that faulty thermo post loops upward and touches the top cover - right where I hit it.
New thermostat ordered - I'll try and update the result.
How about a link? Their search is the worst! I searched for "Rancilio Silvia..." and a number of variations of added terms, and they brought up Rocky parts, rotary pump motors, and a lot of other stuff, but never saw the correct part.
I believe those are generic by the looks of them. The ones I remember for Silvia are the same external size throughout their length. Those appear as to not be able to slip over the terminals and will require cutting of the wire as they go on from the back end (wire end) of the connector. Someone please correct me if I am mistaken..
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