ECM Synchronika: Cleaning the Fill Probe

An over-filling condition can cause your machine's steam boiler to over-pressurize. Follow these instructions to clean your machine's steam boiler fill probe.

Tools Needed:

3mm Allen Wrench
19mm Combination Wrench OR Adjustable Wrench
PTFE Tape - Teflon tape

1. Remove the panels of the machine.

2. Unplug and allow your machine to fully cool down.

3. Locate the fill probe.

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4. Remove the electrical connector

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5. Using your wrench, loosen the top nut until it can easily be moved by hand.
NOTE: Our updated recommendations require unscrewing the whole fill probe assembly from the boiler using a 19mm wrench as shown below. You will then need to clean the threads and re-seal them with a few wraps of PTFE tape before reinstalling.
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6. Using steel wool, or a clean kitchen sponge, clean the probe of any scale or debris.
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7. Replace the newly cleaned probe and reassemble the machine for testing.

NOTE: On the first start up after cleaning the fill probe the boiler will likely need to be purged, as it will still be over-full from the last time the machine was used.

To do this, start with the machine off and direct the hot water wand into a large pitcher, then fully open the hot water valve and power the machine on. As the machine reaches full temperature, water will begin to flow from the hot water wand. Wait for ~8-12 fl oz to be dispensed, then flip the hot water valve to the fully closed position and allow the machine to finish heating as normal.