Check to see if the Rancilio Silvia espresso machine heats in steam mode. If it does, you will need a new 100° C coffee thermostat. If it heats in coffee mode, but not in steam mode, you will need to test the Rancilio Silvia on a GFIC outlet less than 3 years old – one of those outlets with a TEST and RESET button. If it trips, then there is a short circuit inside, and the heating element, wiring, switches, or thermostats may need replacement. If it does not trip, then it means you need a new steam thermostat.
Resetting safety thermostat – Only when there is no heating at all and there is no tripping of the GFIC outlet.
- Remove the top cover for access to the safety thermostat – see detailed instructions.
- On the front wall of the brass boiler, you will see a safety thermostat that has 2 wires connected. Between the two wires, there is a red push button. If you feel a click, please reassemble and test the unit. It should work.
- If the safety thermostat does not click, you will need a continuity tester or a multi-meter with a continuity test mode. If you do not have this tool or do not know how to use it, you can send your machine in for evaluation.
Stage Two – Technical –
If you are unsure how to do this, please hire a professional as damage and personal injury can occur. With the multi-meter, please check for continuity between:
- the heat element posts,
- the posts on each heating element post and the boiler wall
If there is no continuity between the posts OR there is continuity between either post and the boiler wall, then you have a damaged heating element. This results from:
- lack of water in the internal boiler, usually from too much steaming,
- leaving the machine in steam mode too long,
- not refilling the internal boiler with water through the steam wand.
On the above, the heating element and boiler may need repalcement. There are a few versions of the boiler and heating element for the Rancilio Silvia espresso machine since 1998.
- the posts on the coffee thermostat
- the posts on the steam thermostat
- the posts on the safety thermostat
If there is no continuity on the above, the appropriate thermostat needs to be replaced.
Parts & diagrams for the Rancilio Silvia can be found here.