Coreco HA2 Error Code
Dixell XW controller — condenser high-temperature alarm
Source: Coreco_1592027610-xw60lt-xw60lrt-gb-r10-13022012_termostatos.pdf
What does Coreco HA2 mean?
On the Coreco controller (Dixell XW30/XW60/XW70), HA2 is the condenser high-temperature alarm: the condenser probe has exceeded the Au2 limit after the Ad2 delay. What happens to the outputs depends on the AC2 parameter (compressor may be switched off).
Symptoms
- Display shows HA2
- Condenser running hot
- Compressor may switch off depending on AC2
Common causes
- Dirty or blocked condenser
- Restricted condenser airflow
- Failed or weak condenser fan
- High ambient temperature
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Diagnostic steps
Clean the condenser
Clean the condenser coil and clear any airflow obstruction; HA2 means the condenser temperature exceeded the Au2 limit.
Check the condenser fan
Confirm the condenser fan runs and moves air.
Review AC2/Au2/Ad2
Verify the condenser-alarm parameters are set correctly for the unit.
When to call a professional
If cleaning the condenser and confirming the fan does not clear HA2, have a qualified refrigeration technician check the fan and sealed system; 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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