INS-TSSHC-3NPSBFS-16A-1209
15
Backlighting
The screen lights up when you press down a button. If you
do not press down any button for more than 15 seconds, the
screen turns off.
N.B.
If you press down the + or – button once when the back light
is off, it will light up without changing the set point value. The
set point value will change only if you press down one of these
buttons again.
Ground-fault Circuit Interrupter (GFCI)
The GFCI is designed to reduce the risk of electric shock. It
can detect a leakage current of 5 mA. If a defect is detect ed,
the GFCI device lights up, and both screen and heating system
circuit are deactivated. The GFCI can be reinitialized either by
pressing down the Test button or by disconnecting the thermo-
stat at the electrical panel.
Ground-fault circuit interrupter (GFCI) verification
It is important to verify the ground-fault circuit interrupter in-
stallation and operation on a monthly basis.
GFCI verification procedure
1- Increase the temperature set point until the heating power
bars are displayed (displayed beside the floor tempera ture).
2- Press down the Test button.
3- The following two cases can occur:
a) Successful test: The red indicator of the thermostat lights
up. In this case, press down once again the Test button
to reinitialize the ground-fault circuit interrupter, the red
indicator turns off.
b) Failed test: The red indicator does not light up and the
entire display blinks during 5 seconds. In this case, dis-
connect the heating system at the electrical panel.
