Saunier Duval OPALIA X13, Installation And User Instructions Manual

Page: 9 / 12

9
> check there is 230 V AC :
at the supply
at the appliance plug
> then check : the connections to the ignition PCB
the fuse on the PCB
the thermistor connections
the flow sensor connections
> check that the gas supply is turned on
> check that there is sufficient gas pressure to the
heater
> check that the gas supply is turned on
> check that there is suffient gas pressure to the heater
> change gas valve
> change main PCB
> Correct live and neutral connections to the heater
> change ignition PCB
> incorrectly fitted or obstructed flue
> check connections to the air pressure switch and
that the tubes are not blocked or spilt :
>
check air pressure switch : change if necessary
> check electrode lead : change if necessary
> check flame sense lead : change if necessary
> change ignition PCB
> change main PCB
no electrical supply
no gas flow
gas valve
reversed
live and neutral
flue system
ignition system
the water-heater will not run but
the safety indicator light is not lit
the water-heater will not run =
safety disconnection
the spark train does not light the
burner = safety disconnection
The burner lights for less than 10
seconds, then goes out
there is no spark train then the fan
runs = safety disconnection
fault cause > remedy
> change temperature sensor
> change main PCB
> heat exchanger blocked : descale or replace
> change temperature sensor
>
change main PCB
> change gas valve
electrical circuit
water circuit
electrical circuit
water too hot = safety discon-
nection
water is not hot enough (maxi-
mum temp 50
°
C at 5 l/min con-
trol at max)
FAULT FINDING