Ariston microSYSTEM 21 RFFI Installationsanleitung Handbuch - Seite 40
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2.
FAULT FINDING
2.1
F
F
AULT
INDING
(F
-
LOW
CHARTS
16
G
It is possible to detect and correct any defect by using the standard fault
UIDE
finding diagrams described in this chapter.
)
P
RELIMINARY CHECKS
:
MAKE SURE THAT
1 - T
HERE IS SUFFICIENT
WATER IN THE SYSTEM
2 - T
HE GAS IS TURNED ON
3 - T
HE ELECTRICAL SUPPLY
IS TURNED ON
P
RESS THE
/
ON
OFF BUTTON
IS
THE SUPPLY
L.E.D. ILLUMINATED?
YES
P
RESS THE CENTRAL
HEATING BUTTON
IS
THE L.E.D.
ILLUMINATED?
YES
IS
THE
TIME CLOCK/
PROGRAMMER
AND/OR ROOM
THERMOSTAT
CALLING FOR
HEATING?
YES
A
NO
1 - C
HECK THE FUSES
2 - C
HECK THERE IS POWER
P.C.B.
SUPPLIED TO THE
3 - C
/
HECK
REPLACE THE
(CT1)
NO
1 - C
HECK THE INTEGRITY
L.E.D.
OF THE
2 - C
/
HECK
REPLACE THE
(CT1)
NO
FROST
PROTECTION IS
ACTIVATED <5¡C. IS THE
FROSTPROTECTION
REQUESTED?
YES
S
P.C.B.
P.C.B.
NO
B063