Error code
Clock not set alarm Clock or clock-memory battery fault
Applies to 3 models
RXC35, RXC50, RXC65
What this means
The clock function is abnormal, possibly because the time is incorrect or the CR1220 battery is faulty, causing loss of clock settings after a power outage.
When to call a technician
This fault involves refrigerant, pressure, or electrical work that must be handled by a certified technician under EU F-gas rules. Do not attempt to open the refrigerant circuit, access mains wiring, or adjust pressure components yourself. Contact a qualified installer or servicer for this one.
See the official ComfortZone manualA deep link to the manufacturer's own PDF for full technical detail. We link to manuals, we never host them.