Coreco rtC Error Code
Dixell XW controller — real-time-clock alarm (RTC models)
Source: Coreco_1592027610-xw60lt-xw60lrt-gb-r10-13022012_termostatos.pdf
What does Coreco rtC mean?
On the Coreco controller (Dixell XW30/XW60/XW70) with the optional RTC, rtC is the real-time-clock alarm: the clock has to be set. While rtC is present, scheduled (time-band) defrosts fall back to the idF interval.
Symptoms
- Display shows rtC
- Scheduled/time-band defrosts revert to the idF interval
- Clock time lost or not set
Common causes
- Real-time clock not set (e.g. after a long power loss)
- RTC enabled but time invalid
- Power interruption affecting the clock
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Diagnostic steps
Set the real-time clock
rtC is reset by setting the time — enter the Hur/Min/dAY clock parameters and re-enter the current time and day.
Confirm scheduled defrosts
After setting the clock, verify the time-band defrosts (Ld/Sd) resume.
When to call a professional
If rtC returns after the clock is set correctly, the RTC hardware may be at fault (see rtF); have a qualified technician assess the controller.
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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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