Chaffoteaux & Maury MINIMA MX2 24 FF NG - Boiler Fault Finding Flowchart

42
PRELIMARY CHECKS
MAKE SURE THAT:
IS
THE POWER
L.E.D.
ON?
ESTAT E
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
PRESS THE ON/OFF
SWITCH
CH THERMOSTAT KNOB
TURNED CLOCKWISE
A
1 - There is sufficient water in 
the system
2 - The gas is turned on 
3 - The electrical supply is
turned on
DHW IS BEING
DRAWN
YESYES
YESYES
DHW THERMOSTAT KNOB
TURNED CLOWCKWISE
NONO
NONO
NONO
YESYES
TURN CLOCK
AND / OR ROOM
THERMOSTAT
UP / ON
NONO
YESYES
FC P001
It is possible to detect and correct defects by using the standard fault finding diagrams described in this chapter.
NOTE: THIS FAULT FINDING GUIDE IS NOT EXHAUSTIVE.
24.1 Fault finding guide (flow-chart)
24
Fault Finding