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12. Troubleshooting 1/2
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 o.
• 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.
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