De Dietrich OpenTherm Bedienungsanleitung Seite 70

F216: No connection with base station (Thermostat RF only)
Fault indication
Display text
Solution
Fault code F216
w and c are lite up
Wireless communication fault.
Check whether the base station for the boiler is on and is functioning
correctly (consult the transmitter manual if necessary). If there is no
connection between the thermostat and base station, then restore the
connection as follows:
- Put the base station in connection mode. Consult the base station
manual for this.
- On the thermostat select Menu > Settings > Users > Connection.
If this does not solve the problem, look for another location for the
thermostat and/or base station or remove "obstacles" that could interfere
with the RF signal.
EN
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