Coreco CA Error Code
Dixell XW controller — serious external / pressure-switch alarm
Source: Coreco_1592027610-xw60lt-xw60lrt-gb-r10-13022012_termostatos.pdf
What does Coreco CA mean?
On the Coreco controller (Dixell XW30/XW60/XW70), CA is a serious external alarm when a digital input is set as bAL, or a pressure-switch alarm when set as PAL. All regulation outputs are switched OFF while CA is active.
Symptoms
- Display shows CA
- All outputs OFF (refrigeration stopped)
- Buzzer/alarm relay active
- On PAL: nPS pressure-switch trips within the did window
Common causes
- Serious external alarm on a bAL-configured input
- Pressure switch tripped (PAL) — high/low pressure
- Repeated pressure-switch activations reaching nPS within did
- Fault in the connected protection device
- Digital-input wiring or i1F/i2F configuration issue
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Diagnostic steps
Recognise the shutdown
CA stops all outputs. Determine whether the input is bAL (serious external) or PAL (pressure switch).
Investigate the protection device
For PAL, inspect the pressure switch and the refrigeration condition that tripped it; for bAL, inspect the external protection device.
Reset per the manual
For repeated PAL trips reaching nPS, switch the instrument off and on to restart regulation after the cause is fixed.
When to call a professional
CA indicates a serious/pressure fault that stops the unit. Have a qualified refrigeration technician diagnose the pressure or protection condition before returning it to service; this work is reserved for qualified personnel.
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Other Coreco Error Codes
Control probe (probe 1) error — signal interrupted, short-circuited or incompatible probe
Evaporator / defrost probe (probe 2) error — signal interrupted, short-circuited or incompatible probe
Condenser / product probe (probe 3) error — signal interrupted, short-circuited or incompatible probe
Immediate or delayed alarm from the multifunction digital input (external alarm)
Open-door alarm from the door-switch digital input
Low-temperature alarm — measured temperature below set point by more than parameter AL
High-temperature alarm — measured temperature above set point by more than parameter AH
Unit parameter reading (data) error — saved configuration data error
Operating parameter reading (data) error — manual reset
Defrost ended by timeout — last defrost stopped on maximum duration, not on temperature
Defrost running — status message shown during a defrost cycle (not an alarm)
Dirty-condenser warning/alarm — pre-alarm (cht) between Ac-AE and Ac, then alarm (CHt) when Ac is exceeded and refrigeration stops (manual reset)
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