Technical information

57
PRELIMARY CHECKS
MAKE SURE THAT:
IS
THE POWER
L.E.D.
ON?
ESTATE
NONO
YESYES
1 - Check the fuses
2 - Check the power supply
cable, plug and outlet
3 - Check/replace the power
supply to the P.C.B.
4 - Check/replace the P.C.B
T
URN THE SELECTOR 
K
NOB TO
TURN THE CH
CONTROL KNOB TO MAX
A
1 - There is sufficient water in 
the system
2 - The gas is turned on 
3 - The electrical supply is
turned on
IS DHW BEING
DRAWN
YESYES
YESYES
TURN THE DHW 
CONTROL KNOB TO MAX
NONO
NONO
NONO
YESYES
IS CLOCK TURNED
ON AND THE ROOM
THERMOSTAT
TURNED UP
NONO
YESYES
FC P001
It is possible to detect and correct defects by using the standard fault finding diagrams described in this chapter.
N
OTE:
T
HESE CHECKS ARE NOT EXHAUSTIVE.
19. FAULT FINDING GUIDE (Flow-chart)