4. Troubleshooting
Problem
Solution
The thermostat is hot.
In normal operating conditions, the
thermostat housing can reach nearly
40°C
(104°F)
at maximum load.
It is normal and will not affect the
operation of the thermostat.
Heating is always on.
Check if the thermostat is properly
connected. Refer to the installation
section.
Heating does not run even
if the thermostat indicates
it is on.
Check if the thermostat is properly
connected and make sure the red
indicator is not lit. Refer to the
installation section.
The display does not come on.
Check if the thermostat is properly
connected. Refer to the installation
section. Check the power supply at
the electrical panel.
The red indicator lights up
frequently.
Contact customer service.
The displayed ambient
temperature is incorrect.
Check the presence of an air
stream or a heat source near
the thermostat, and correct the
situation.
The display indicates E1*, E2**
or E3***.
Faulty thermal sensor. Contact
customer service.
Weak luminosity of the
display.
Possibility of a bad contact. Check
thermostat wirings. Refer to the
installation section.
* E1: Faulty ambient exterior sensor (open circuit) - written in the ambient section
** E2: Faulty interior sensor (open circuit) - written in the ambient section
*** E3: Faulty floor sensor (open circuit) - written in the floor section
Note: If you do not solve the problem after checking these points, cut off the
power supply at the main electrical panel and contact customer service
(see page 24 for contact information).
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