Fault Codes / Bitzer / 3400
BI
Bitzer 3400
High
ECOLINE / IQ Module — Suction pressure low
Bitzer 3400: Suction pressure low This fault noticeably affects operation.
Possible causes
- Refrigerant shortage / leak
- Clogged filter or expansion valve
- Iced evaporator / low airflow
Check steps
- Measure low pressure vs setpoint
- Check charge and leaks
- Check filter drier and EXV
Affected parts
- Filtertrockner
- Expansionsventil
- Drucksensor (Niederdruck)
Safety note
Ventilate if leak suspected.
Source: Bitzer CM-RC-01 Reference Manual s.27 — 3400='Suction Pressure Low'
Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.
Look up in Enthalio →
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