18
B063
2.
FAULT FINDING
PRELIMARY CHECKS
MAKE SURE THAT:
IS
THE POWER
L.E.D.
ON?
POSTION
OF THE
SELECTOR
NO
NO
WINTER
ESTAT E
SUMMER
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
1 - Check the fuses
2 - Check the power supply
cable, plug and outlet
3 - Check/replace the power
supply to the P.C.B.
TURN ON THE ON/OFF
SWITCH
D.H.W. IS
BEING DRAWN?
D.H.W. IS
BEING DRAWN?
FOR BOILERS
WITH ELECTRONIC
ANTI-FROST DEVICE:
PROTECTION IS ACTIVATED
IF HEATING TEMP
IS < 5
°
C
FOR BOILERS
WITH ELECTRONIC
ANTI-FROST DEVICE:
PROTECTION IS ACTIVATED
IF HEATING TEMP
IS < 5
°
C
MUST
TIME CLOCK
AND/OR ROOM
THERMOSTAT
BE ACTIVATED?
A
ECONOMY/
COMFORT
SELECTOR
TEMP.
C.H. < 34
°
C
Comfort
Comfort
Economy
Economy
1 - There is sufficient water in
the system
2 - The gas is turned on
3 - The electrical supply is
turned on
1 - Check/reset system
pressure
2 - Check/restore gas
supply
3 - Check/replace short-
circuited heating probe
4 - Check/replace siezed
pump
1 - Check/reset the
system pressure
2 - Check/restore
gas supply
3 - Check/replace short-
circuited heating probe
4 - Check/replace
siezed pump
TEMP.
C.H. < 34
°
C
ECONOMY/
COMFORT
SELECTOR
It is possible to detect and correct any defect by using the standard fault
finding diagrams described in this chapter.
2.1
F
AULT
F
INDING
G
UIDE
(F
LOW
-
CHARTS
)
FC004Aa
Содержание micro Genius 23 MFFI
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