Bosch A01 (5573)

Medium

Compress — Brine sensor TB0 — open circuit.

Bosch A01 (5573): Brine sensor TB0 — open circuit. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Sensor TB0 or signal cable open.

Check steps

Check sensor TB0 & screw terminal.
Compare resistance with table.

Affected parts

Solefühler TB0

Safety note

230V — isolate power.

Source: Bosch/IVT/Buderus Compress Wärmepumpe Alarm-Tabelle (lvisawo.fi/jseducation.se resmi servis kılavuzu aynası) — Not independently re-verified -- third source inaccessible in this pass. Deferring to researcher's report.

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

Look up in Enthalio →

Related fault codes

No EMS BUS communication / internal connectionA11 Booster heater limiter (STB) or pressure switcA01 (5246) Hot gas temperature too high (TR6 > 110–120H01 (5311) Z1 phase monitor tripped: one or more supply-vA01 (5273) High pressure guard MR1 tripped.H01 (5508) Compressor control failure – not running / locA01 (5350)