Fault Finding; Fault Finding Guide (Flow-Chart) - Ariston EuroCombi A/23 MFFI Servicing Instructions

2.

FAULT FINDING

2.1 Fault Finding Guide
(Flow-chart)
IS HOT
WATER BEING
DEMANDED?
FOR BOILERS
EQUIPPED WITH AN
ELECTRONIC ANT-FREEZE
SYSTEM: HAS THE SAFETY BEEN
NO
TRIGGERED TO ACTIVATE
THE DEVICE?
(T sensor <5°C)
20
Supplied By www.heating spares.co Tel. 0161 620 6677
It is possible to detect and correct any defect by using the standard fault
finding diagrams described in this chapter.
Preliminary Checks
1) There is sufficient
water in the system
2) The gas is turned on
3) The electricity to the
boiler is on
On / Off Button
THE POWER SUPPLY
FOR THE OPERATING
SUMMER
FUME DISCHARGE TEST
YES
NO
YES
Make sure that:
Press the
HAS
THE LIGHT fOR
NO
COME ON?
YES
SETTING
WINTER
MODE
YES
YES
A
1) Check the fuses
2) Check the power
supply cord, plug and
outlet
3) Check/replace the power
supply PCB
IS HOT
WATER BEING
DEMANDED?
NO
DO THE
PROGRAMMING
TIMER AND/OR EXTERNAL
THERMOSTAT NEED
TO BE ACTIVATED
FOR BOILERS
EQUIPPED WITH AN
ELECTRONIC ANT-FREEZE
SYSTEM: HAS THE SAFETY BEEN
TRIGGERED TO ACTIVATE
THE DEVICE?
(T sensor <5°C)
NO
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