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Yolanda BarnesAug 12, 2025
How to fix E101 non-locking fault on Envirovent energiSava 300 Fan?
- CChristine FigueroaAug 12, 2025
An E101 non-locking fault on your Envirovent Fan indicates a defective pressure sensor extract fan or blocked/kinked blue pressure hoses. In this state, the system switches to constant RPM control, and the preheater turns on when outdoor temperatures drop below 0°C. To address this: * Disconnect the unit from power. * Examine the blue pressure hoses (and pressure tubes) for fouling, kinking, or damage.
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