User`s manual

29
PRELIMARY CHECKS
MAKE SURE THAT:
PRESS THE ON/OFF BUTTON
1
- The mains water supply is turned on
2 - The gas is turned on 
3 - The electrical supply is turned on
DRAW OF WATER > 2.3 L/min

HAS THE 
MICROSWITCH
CLOSED?
NONO
POWER TO
MICROSWITCH?
1 - Check/replace connection cable
2 - Check/replace
w
ater group diaphragm
3 - Check/replace t
he printed circuit board
YESYES
1 - Replace microswitch
YESYES
NONO
HAS THE FAN
STARTED TO RUN?
NONO
MOMENTARY
POWER TO
FAN ?
1 - Check/replace connection cable
2 - Check/replace
c
ontrol box
3 - Check/replace electrical box
YESYES
YESYES
NONO
1 - Replace fan
YESYES
HAS THE
IGNITION SEQUENCE
BEGUN ?
IS FAN
RUNNING
CONTINUOUSLY?
1 - Check air pressure switch
2 - Check venturi & pipes
3 - Check fan efficiency
NONO
YESYES
A
FC P010a
IS THE BURNER
ALIGHT ?
YESYES
YESYES

NONO
NONO
1 - Check ignition electrode cable 
2 - Check/replace ignition electrode
3 - Check/replace control box
4 - Check/replace electrical box
1 - Check power supply of gas valve
2 - Check efficiency of gas valve
3 - Replace gas valve
4 - Check/replace control box
5 - Check/replace electrical box
IS SPARK
GENERATION
NORMAL ?
NONO
YESYES
1 - Check if flame strikes detection electrode
2 - Check soft-light gas pressure
3 - Check/replace detection electrode
4 - Check/replace control box
5 - Check/replace electrical box
HAS THE
BOILER SAFETY
SHUTDOWN BEEN
ACTIVATED ?
8. FAULT FINDING CHART