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Coreco LA2

Dixell XW controller — condenser low-temperature alarm

Source: Coreco_1592027610-xw60lt-xw60lrt-gb-r10-13022012_termostatos.pdf

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What does Coreco LA2 mean?

On the Coreco controller (Dixell XW30/XW60/XW70), LA2 is the condenser low-temperature alarm: the condenser probe has fallen below the AL2 limit after the Ad2 delay. What happens to the compressor depends on the bLL parameter.

Symptoms

  • Display shows LA2
  • Condenser temperature below the AL2 limit
  • Compressor behaviour depends on bLL

Common causes

  • Condenser probe reading low
  • Very low ambient temperature
  • AL2 threshold set too tight
  • Condenser probe fault

Diagnostic steps

  1. 01

    Check the condenser probe reading

    Compare the condenser probe against the actual temperature; LA2 means it fell below AL2.

  2. 02

    Review AL2/bLL/Ad2

    Confirm the condenser low-temperature parameters suit the installation and ambient.

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When to call a professional

If LA2 reflects a genuine fault rather than a parameter/ambient issue, have a qualified refrigeration technician investigate; electrical access is reserved for qualified personnel.

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Other Coreco error codes

E0

Control probe (probe 1) error — signal interrupted, short-circuited or incompatible probe

E1

Evaporator / defrost probe (probe 2) error — signal interrupted, short-circuited or incompatible probe

E2

Condenser / product probe (probe 3) error — signal interrupted, short-circuited or incompatible probe

IA

Immediate or delayed alarm from the multifunction digital input (external alarm)

dOr

Open-door alarm from the door-switch digital input

LO

Low-temperature alarm — measured temperature below set point by more than parameter AL

HI

High-temperature alarm — measured temperature above set point by more than parameter AH

EE

Unit parameter reading (data) error — saved configuration data error

EF

Operating parameter reading (data) error — manual reset

Ed

Defrost ended by timeout — last defrost stopped on maximum duration, not on temperature

dF

Defrost running — status message shown during a defrost cycle (not an alarm)

CHt

Dirty-condenser warning/alarm — pre-alarm (cht) between Ac-AE and Ac, then alarm (CHt) when Ac is exceeded and refrigeration stops (manual reset)

View all Coreco error codes →