Fault Codes / Bitzer / 3431
BI
Bitzer 3431
Critical
ECOLINE / IQ Module — High pressure switch tripped
Bitzer 3431: High pressure switch tripped This fault typically halts operation and needs immediate attention.
Possible causes
- Dirty condenser or failed fan
- Overcharge / non-condensables
- Closed discharge valve
Check steps
- Clean condenser, check fan
- Measure high pressure (cutout approx 28 bar, switch-dependent)
- Check pressure switch and wiring
Affected parts
- Druckschalter (Hochdruck)
- Verflüssiger
- Verflüssigerlüfter
Safety note
High pressure — relieve before service.
Source: Bitzer CM-RC-01 Reference Manual s.27 — 3431='High Pressure Switch'
Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.
Look up in Enthalio →
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