Ariston ecoGENUS 24 MFFI Anweisungen für die Wartung - Seite 19
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2.
FAULT FINDING
2.1
F
F
AULT
INDING
(F
-
LOW
CHARTS
Model 24 MFFI
SELECTOR ON/OFF:
NO:
COMFORT OFF
ANTI-FROST DEVICE:
Is there a condition for it to be active?
(- flow temp. < 3 C
- outdoor temp. < -3 C (outdoor sensor optional)
- Jumper 4 selects the pump
THERE IS NO CALL FOR PUMP OPERATION
G
It is possible to detect and correct any defect by using the standard fault
UIDE
finding diagrams described in this chapter.
)
YES
TABLE
I and II
SUMMER
COMFORT
YES: COMFORT ON
green L.E.D. on
Flow
temperature
<40 C
NO
Flow
temperature
>50 C
YES
D.H.W.
IS BEING
YES
DRAWN?
NO
BUILT-IN
ELECTRONIC
for continuous
operation)
NO
MAKE SURE THAT:
1. There is sufficient water in the system
2. The gas is turned on
3. The electrical supply is turned on
PUSH THE ON/OFF
BUTTON TO ON
IS THE
POWER L.E.D. AND
DISPLAY ON?
DOES A STOP CODE
APPEAR ON THE DISPLAY?
POSITION OF THE SUMMER/
WINTER SELECTOR
YES: COMFORT ON
YES
YES
temperature
NO
NO
temperature
YES
YES
YES
A
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
COMFORT
SELECTOR ON/OFF:
green L.E.D. on
Flow
COMFORT OFF
<40 C
NO
Flow
>50 C
YES
D.H.W.
YES
IS BEING
DRAWN?
NO
MUST
THE TIME CLOCK
AND/OR ROOM THERMOSTAT
BE ACTIVATED?
NO
BUILT-IN
ELECTRONIC
ANTI-FROST DEVICE:
Is there a condition for it to be active?
(- flow temp. < 3 C
- outdoor temp. < -3 C (outdoor sensor optional)
- Jumper 4 selects the pump
for continuous
operation)
NO
THERE IS NO CALL FOR PUMP OPERATION
NO:
19