Ariston 47-116-34 Installations- und Wartungsanweisungen - Seite 40

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7.

FAULT FINDING

7.1.
F
F
AULT
INDING
(F
-
LOW
CHARTS
Model 27/32 MFFI
COMFORT
SELECTOR ON/OFF:
yellow L.E.D . on
NO:
NO:
COMFORT OFF
COMFORT OFF

D.H.W.

IS BEING
DRAWN?
BUILT-IN
ELECTRONIC
ANTI-FROST DEVICE:
Is there a condition for it to be active?
(flow temp between 3C & 8C)
- PC0 continuous pump
operation selected on
menu
THERE IS NO CALL FOR PUMP OPERATION
G
UIDE
It is possible to detect and correct any defect by using the standard fault
)
finding diagrams described in this chapter.
1. There is sufficient water in the system
2. The gas is turned on
3. The electrical supply is turned on
PRESS THE ON/OFF BUTTON
YES
YES
DOES AN ERROR CODE
TABLE
APPEAR ON THE DISPLAY?
I and II
SUMMER
SUMMER
YES: COMFORT ON
YES: COMFORT ON
Flow
temperature
<36C
NO
NO
Flow
temperature
>42C
YES
YES
YES
YES
NO
NO
YES
YES
NO
NO
MAKE SURE THAT:
TO THE ON POSITION
IS THE
DISPLAY ON?
NO
YES: COMFORT ON
YES: COMFORT ON
YES
YES
YES
YES
Flow
temperature
<36C
NO
NO
NO
NO
NO
NO
Flow
temperature
>42C
YES
YES
YES
YES
YES
YES
A
NO
NO
1. Check the fuses
2. Check the power supply to
the control panel
3. Check/replace the
ON/OFF button
4. Check the connection between
the main and display P.C.B.s
5. Check/replace the
main and display P.C.B.s
WINTER
WINTER
COMFORT
SELECTOR ON/OFF:
yellow L.E.D. on
NO:
NO:
COMFORT OFF
COMFORT OFF
D.H.W.
YES
YES
IS BEING
DRAWN?
NO
NO
IS THE
THE TIME CLOCK
AND/OR ROOM THERMOSTAT
BE ACTIVATED?
NO
NO
BUILT-IN
ELECTRONIC
ANTI-FROST DEVICE:
Is there a condition for it to be active?
(flow temp between 3C & 8C)
- PC0 continuous pump
operation selected on
menu
NO
NO
THERE IS NO CALL FOR PUMP OPERATION
55