Gaggia Classic Pro: Solenoid Valve Troubleshooting

by Whole Latte Love 3 min read Updated: September 18, 2025

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If you are able to get steam flow, but no brew flow, the solenoid valve is the likely culprit. This is a valve that is connected directly to the boiler. Be sure to try the brew flow without the portafilter attached. You're looking for 6oz of water to be dispensed in about 20 seconds. If the flow is significantly slower than that without the portafilter in place, it will likely be the solenoid valve. You should be descaling the machine, monthly. If you haven't been doing so, the valve can become clogged. You can remove and clean the valve, resolving the issue.