17
B063
IS THE PUMP
RUNNING?
NO
YES
POWER T O
THE PUMP?
1 - C
HECK THE OPERATION
OF THE PUMP
2 - R
ELEASE
/R
EPLACE THE
PUMP
1 - C
HECK THE PUMP CABLE
2 -
C
HECK
/R
EPLACE
P.C.B.
(CT1)
3 - C
HECK THE SYSTEM
PRESSURE GAUGE IS AT
1.5
BAR
A
IS THE FAN
RUNNING?
BOILER
SHUTDOWN?
POWER T O
THE FAN?
NO
YES
YES
NO
YES
NO
NO
YES
1 - C
HECK
/R
EPLACE AIR
PRESSURE SWITCH
AND CABLE
2 - C
HECK IF THE RESET
DETECTION ELECTRODE
IS JAMMED
3 - C
HECK
/R
EPLACE
1 - C
HECK
/R
EPLACE FAN
CONNECTION CABLE
2 - C
HECK
/R
EPLACE
P.C.B.
3 - C
HECK
/R
EPLACE AIR
PRESSURE SWITCH
1 - R
EPLACE THE FAN
1 - R
ESET THE BOILER
INTERNAL
P.C.B. PROTECTION
ACTIVATED?
B
NO
YES
FC002Ab