Fault Codes / Vaillant / F.532

flexoTHERM/aroTHERM — Building circuit: flow too low.

Possible causes

• Circuit not bled / strainer clogged.
• Water shortage / pump faulty or blocked.

Check steps

• Bleed, clean strainer, check pressure.
• Check pump & PWM signal (flow in sensor/actuator test).

Affected parts

• Umwälzpumpe
• Schmutzfilter

Safety note

Source: Vaillant resmi servis kılavuzu — ManualsLib s.39: 'F.532 – Building circuit: Flow rate too low'

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

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