Error code
Uppvärmning retur max larm Heating return-temperature maximum alarm
Applies to 1 model
RX95
What this means
The return-water sensor temperature is too high; circulation-pump operation and the return-sensor connection require checking.
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.