Ariston Type C Installation Instructions Manual page 44

B
IS THE FAN
RUNNING?
YES
C
20
NO
BOILER
SHUTDOWN?
NO
PUMP PROTECTION
ACTIVATED?
NO
INTERNAL
P.C.B. PROTECTION
ACTIVATED?
NO
POWER
TO FAN?
YES
1 - Replace fan
YES 1 - Reset the boiler
1 - Check/replace main
circuit flow switch
YES
2 - Check/replace
connection cable
3 - Check/replace P.C.B.
1 - Check/replace air
pressure switch
YES
2 - Check if reset button
is jammed
3 - Check/replace flame
detection electrodes
1 - Check/replace
connection cable
NO
2 - Check/replace P.C.B.
3 - Check/replace air
pressure switch
FC004Ac
B063