DE DIETRICH Thermostat modulant d’ambiance - Manual (Page 71)

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F227: Wait for RF sensor
Fault indication Fault code F227
Wait for RF sensor.
Display text Wait for RF sensor information. This may take 15 mins
Solution This fault code may appear after the thermostat RF is restarted, e.g.
after changing the battery.
As soon as the thermostat RF has received a message from the con-
nected RF sensors, the message will disappear.
If the RF sensors fail to report, another fault code will be displayedafter
15 minutes.