Fault Codes / Trane / Very Low Suction Pressure

Trane Very Low Suction Pressure

Medium

Tracer CH530 (CGAM/CXAM) — A circuit's suction pressure dropped below 50% of the low pressure cutout setpoint — forces an entire chiller shutdown.

Trane Very Low Suction Pressure: A circuit's suction pressure dropped below 50% of the low pressure cutout setpoint — forces an entire chiller shutdown. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Severe refrigerant loss or cross-circuit cross-binding.

Check steps

Check the affected circuit's refrigerant charge and circuit lockout status.

Affected parts

Saugdrucksensor

Safety note

Latching — manual (Local) reset required.

Source: Trane Tracer CH530 Control System for Scroll Chillers CGAM/CXAM 020-170 User Guide (CG-SVU06B-E4), Table 4 Main Processor Diagnostics, p.29-31

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

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