Everlasting rtc

What does Everlasting rtc mean?

rtc is the internal clock error. The controller has a real-time clock used to date- and time-stamp HACCP alarm records, which log the year, month, day, hour and duration of each event. When the clock is faulty or unset, the controller flags rtc, and the date and time attached to stored HACCP alarms can no longer be trusted, even though refrigeration itself continues to operate.

Symptoms

• rtc shown on the controller display with the alarm LED active
• Incorrect or blank date/time on the controller
• HACCP alarm records with wrong or missing timestamps
• Cooling unaffected while the clock fault persists

Common causes

• Real-time clock not set after installation or a power event
• Depleted or failed clock back-up battery on the controller
• Controller real-time clock hardware fault
• Clock data lost following an extended power failure

Diagnostic steps

1. 01

   Confirm the code

   Read rtc on the display and note that cooling continues; this fault concerns the controller's clock, not the refrigeration.

2. 02

   Check date and time

   View the controller's clock (RTC) and see whether the date and time are blank, reset, or incorrect.

3. 03

   Reset the clock

   Set the correct date and time on the controller and confirm whether the rtc alarm clears once a valid time is stored.

4. 04

   Note HACCP impact

   Be aware that HACCP alarm timestamps recorded while the clock was faulty may be inaccurate for compliance records.

5. 05

   Escalate hardware faults

   If rtc returns after setting the time, the clock back-up or controller hardware may be at fault; contact technical support.

When to call a professional

Call technical support if rtc reappears after correctly setting the date and time, because that indicates a clock back-up battery or controller hardware fault reserved for authorized service. Although refrigeration keeps working, an unreliable clock undermines HACCP record-keeping, so a technician should restore accurate timekeeping where temperature logs are needed for food-safety compliance.