4
Power light (green)
– connecting the heater to the network
Malfunction indicator light (red)
– burner ignition failure or flame extinguishing
Running light (orange)
– presence of flame
Over temperature light (red)
– exchanger overheating (failure)
Emergency thermostat deblocking button
(unscrew the cap)
E
F
B3
B2
10
30
10
A
250
N
M
P
C
B1
B
H
J
K
L
G
øD
øD