Bosch A01 (5204)

Medium

Compress — Flow sensor T0 — open circuit.

Bosch A01 (5204): Flow sensor T0 — open circuit. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Sensor T0 or signal cable open.

Check steps

Check signal cable & sensor T0.
Compare resistance with sensor table.

Affected parts

Vorlauffühler T0

Safety note

230V — isolate power.

Source: Bosch resmi servis kılavuzu — Alarm List 8754, code 5204, Display Code A01, Installer: "Info Z1 Flow temperature sensor T0 open circuit — Warning if the resistance of flow sensor T0 > 30 kOhm (<0°C)."

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

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