II
Checking the safety temperature limit stat (STB)
1.
Switch the heating system
on
.
2.
Enter the key code (see Page
6).
3.
Press the Add
button@
until "RELAY"
appears in the displ
ay.
The first display shows the current sta
tu
s of the
heating system
(Fig.
1).
4.
Turn the knob, the flame symbol
~
for the
burner relay appears first (Fig.
2).
The burner starts.
5.
Remove the control unit knob
(Fi
g.
3).
6.
Push the lever or button (accordi
ng
to
control
panel type) towards the back with a screw-
driver
or
someth
in
g similar and keep pressing
until the safety temperature limit stat
tr
iggers
(
Fig.
4).
Stopp
in
g the check
• Press the Add @ or
EJ
button.
Replace
th
e control panel knob and set to
AUT.
• To reset the safety temperat
ur
e
li
mit stat,
unscrew the safety nut
on
th
e
STB
and press
in
the reset button underneath
(Fig.
5).
4
Fig. 3
Fig. 4
Fig. 5
Example
of current status
RELR':I
~
'iilll~
Fig. 1
Burner
RELR':I
~
Fig.
2
0 Safety
nut
STB
0/'/
