8.5 Faults
If there is a fault in the system, by activating the display (by pressing any button) it will be possible to view, for
5 seconds, the relevant error code at the same time as "eRR".
after 8 seconds, the display returns to normal operation.
Thermostat faults are displayed with symbols "exx":
"E10" – internal temperature sensor fault
"E20" – communication error with RF module
"E21" – no communication with gateway.
fig. 32 - example of a thermostat error
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cod. 3542B150 - Rev 02 - 04/2022
EN