Ariston microGENUS 27 MFFI Instrucciones de mantenimiento - Página 18
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2.
FAULT FINDING
2.1
F
F
AULT
INDING
(F
-
LOW
CHARTS
Economy
BEING DRAWN?
1 - Check/reset system
pressure
2 - Check/restore gas
supply
3 - Check/replace short-
circuited heating probe
4 - Check/replace siezed
pump
WITH ELECTRONIC
ANTI-FROST DEVICE:
NO
PROTECTION IS ACTIVATED
IF HEATING TEMP
18
G
It is possible to detect and correct any defect by using the standard fault
UIDE
finding diagrams described in this chapter.
)
PRELIMARY CHECKS
1 - There is sufficient water in
2 - The gas is turned on
3 - The electrical supply is
TURN ON THE ON/OFF
SUMMER
ESTAT E
ECONOMY/
Comfort
COMFORT
SELECTOR
TEMP.
C.H. < 34 C
NO
NO
NO
NO
D.H.W. IS
YES
YES
NO
NO
FOR BOILERS
YES
YES
IS < 5 C
MAKE SURE THAT:
the system
turned on
SWITCH
IS
THE POWER
NO
NO
L.E.D.
ON?
1 - Check the fuses
YES
YES
2 - Check the power supply
3 - Check/replace the power
POSTION
WINTER
OF THE
SELECTOR
Comfort
TEMP.
C.H. < 34 C
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
YES
PROTECTION IS ACTIVATED
A
cable, plug and outlet
supply to the P.C.B.
ECONOMY/
COMFORT
SELECTOR
NO
NO
Economy
D.H.W. IS
BEING DRAWN?
NO
NO
MUST
TIME CLOCK
AND/OR ROOM
THERMOSTAT
BE ACTIVATED?
1 - Check/reset the
system pressure
NO
NO
2 - Check/restore
gas supply
3 - Check/replace short-
circuited heating probe
4 - Check/replace
siezed pump
FOR BOILERS
WITH ELECTRONIC
ANTI-FROST DEVICE:
IF HEATING TEMP
IS < 5 C
NO
FC004Aa
B063