Danfoss Ally User Manual page 16

User Guide
Danfoss eTRV E-error codes description
Alarm
code
E1 Top PCB sensor error.
E2
Side PCB sensor error.
E6
Motor error.
E8 Invalid communication (Zigbee).
E9 Valve closing ability.
16 | © Danfoss | FEC | 2023.06
Danfoss Ally™ Radiator Thermostat
Problem Solution
The temperature sensor is damaged, return
to a dealer.
The temperature sensor is damaged, return
to a dealer.
Motor jammed, try to remove/insert battery,
if the error persists try to reset, if still no posi-
tive result return to a dealer.
NOTE! The eTRV will retry after 20 min.
The error code will remain on the display, until
cleared by the controller.
Try to remove/re-insert battery. If the error
persists, try to reset. If still no positive result,
return to a dealer.
It appears the valve cannot be closed correctly.
Please check the installation and/or contact an
installer.
BC349733524454en-010401