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rtCCoreco

Coreco rtC

Dixell XW controller — real-time-clock alarm (RTC models)

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

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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

Diagnostic steps

  1. 01

    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.

  2. 02

    Confirm scheduled defrosts

    After setting the clock, verify the time-band defrosts (Ld/Sd) resume.

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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

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 →