Bosch A01 (5201)

Medium

Compress — Outdoor sensor T1 — open circuit (resistance too high).

Bosch A01 (5201): Outdoor sensor T1 — open circuit (resistance too high). This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Sensor T1 or signal cable open.

Check steps

Check signal cable & sensor T1.
Compare resistance with sensor table.

Affected parts

Außenfühler T1

Safety note

230V — isolate power.

Source: Bosch resmi servis kılavuzu — Alarm List 8754, code 5201, Display Code A01, Installer: "Info Outside temperature sensor T1 open circuit — Warning if the resistance of the outdoor sensor T1 > 179 kOhm (corresponding to a temperature < -50°C)."

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

Look up in Enthalio →

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