Customer calls about error messages
Error messages
If a fault or error occurs, the thermostat will display one of the following error
messages:
• E0: Internal failure. The thermostat is defective. Contact your installer.
The thermostat must be replaced.
• E1: Internal sensor defective or short-circuited. Contact your installer.
The thermostat must be replaced.
• E2: External wired floor sensor disconnected, defective, or short-circuited.
Contact your installer for reconnection or replacement.
• E5: Internal overheating. Contact your installer in order to have the installation
inspected.
Note! If any of the above mentioned errors occur, the heating is shut off.
• Three circles containing dots are shown on the screen; the thermostat cannot be
operated.
The thermostat is in “Child Lock” mode. See the section titled “Child Lock” in this
manual for instructions on how to unlock it.
• A circle containing a dot is displayed in the upper left corner of the screen and the
following text is displayed:
“Press on the filled circle”.
Pressure has probably been applied to the screen while power was connected or
the thermostat was turned on. Restart the thermostat in the following way to continue
using it:
1. Hold the power/reset button on the right side of the thermostat to switch it off.
2. Press the power/reset button on the right side of the thermostat to turn it back
on.
The thermostat will then boot normally.