Download Ariston AB 103 M Technical information

7.
FAULT FINDING
7.1
FAULT FINDING GUIDE
(FLOW-CHARTS)
These fault finding guides are not exhaustive. However, it
is possible to detect and correct many defects by using
the standard fault finding diagrams described in this
chapter, ensure these guides are carried out in the set
order.
PRELIMINARY CHECKS
MAKE SURE THAT:
1 - There is sufficient water in
the system
2 - The gas is turned on
3 - The electrical supply is
turned on
To ensure that the external controls do
not interfere with the fault finding,
disconnect the wires from the terminal
block on the rear of the control panel and
provide a solid link between the
terminals (Section 2.13, page 22).
TURN ON THE ON/OFF
SWITCH
IS
THE POWER
DISPLAY
ON?
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
YES
see section 3.7
YES
DOES AN ERROR CODE
APPEAR ON THE DISPLAY?
POSTION
OF THE
SELECTOR
SUMMER
ESTAT E
WINTER
Comfort
ECONOMY/
COMFORT
SELECTOR
NO
Comfort
TEMP.
C.H. < 42°C
Economy
YES
TEMP.
C.H. < 42°C
NO
YES
NO
Economy
NO
YES
IS D.H.W.
BEING DRAWN?
ECONOMY/
COMFORT
SELECTOR
IS D.H.W.
BEING DRAWN?
YES
NO
1 - Check/reset system
pressure
2 - Check/restore gas
supply
3 - Check/replace shortcircuited heating probe
4 - Check/replace siezed
pump
NO
YES
BUILT-IN
ELECTRONIC
ANTI-FROST DEVICE:
NO
Is there a condition for it to be active
(flow temp between 3C & 8C)
NO
YES
YES
A
60
ARE THE
TIME CLOCK
AND/OR ROOM
THERMOSTAT
ACTIVATED
1 - Check/reset the
system pressure
2 - Check/restore
gas supply
3 - Check/replace shortcircuited heating probe
4 - Check/replace
siezed pump
BUILT-IN
ELECTRONIC
ANTI-FROST DEVICE:
Is there a condition for it to be active
(flow temp between 3C & 8C)
NO