Dixell PAL

Critical

XR160D / XR170D (i1F/i2F dijital giriş yapılandırması) — Pressure switch alarm via the configurable digital input (i1F/i2F = PAL) — the compressor and regulation are stopped; on XR160D/XR170D the raw code is displayed as "PAL" (the equivalent alarm is collapsed to "CA" on other Dixell models).

Dixell PAL: Pressure switch alarm via the configurable digital input (i1F/i2F = PAL) — the compressor and regulation are stopped; on XR160D/XR170D the raw code is displayed as "PAL" (the equivalent alarm is collapsed to "CA" on other Dixell models). This fault typically halts operation and needs immediate attention.

Possible causes

The pressure switch has activated the number of times set in parameter nPS within the 'did' time interval, indicating repeated short-cycling — typically caused by low refrigerant charge, a restriction, or a faulty pressure switch.
Wiring fault or stuck contact on the pressure switch digital input keeps the compressor permanently disabled (compressor stays OFF as long as the digital input is ON).

Check steps

Investigate the refrigerant circuit for the cause of repeated pressure switch trips (low charge, blocked filter/drier, faulty condenser fan) before restarting.
Once the nPS activation count is reached within the did interval, switch the instrument off and on to restart normal regulation — this is required by design and will not clear automatically.

Affected parts

Yüksek/alçak basınç presostatı
Soğutucu devre bileşenleri (filtre kurutucu, kondenser fanı)
Dixell XR160D/XR170D kontrolör

Safety note

The high-pressure side is under system pressure — verify system pressure and disconnect all electrical connections before working on the refrigerant circuit.

Source: Dixell resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Dixell XR160D-XR170D (with built-in RS485) Installing and Operating Instructions, rel.1.0, cod.1592008430, Dixell s.r.l. Independently re-fetched and full text verified (https://webapps.copeland.com/Dixell/Content/Pages/Manuals/XR100500/XR170D/XR170D_E.pdf). Section 6.4 "CONFIGURABLE INPUT - PRESSURE SWITCH (PAL)": …

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

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Related fault codes

Generic (non-serious) external alarm via the cEAL Serious external alarm via the configurable diBAL Thermostat probe (Probe 1) fault or wrong probP1 Evaporator probe (Probe 2) fault — defrost conP2 Third probe (Probe 3) fault (e.g. condenser/prP3 High temperature alarm (too warm).HA