Fault Finding Chart - Heatline SARGON 18S Installation, Servicing And User Instructions Manual

NOTE:
When installing, commissioning or servicing a gas appliance that incorporates a pre-mix burner
and zero-set governor, because it is not possible to measure an operating pressure the engineer
should fi rst check that the gas supply is metered and ascertain whether it is possible to measure
the gas rate. If the gas input rate can be measured then the requirements of GSIUR 26(9) can be
met, including any specifi c requirements in manufacturers' instructions. If gas input rate cannot
be measured then, to satisfy the intent of GSIUR 26(9), the engineer shall measure the combustion
quality of the appliance in accordance with BS 7967 or the technical data of this manual.
If the engineer does not have the required equipment and no alternative test is specifi ed
by the manufacturer then the appliance shall be turned off and disconnected as
an un-commissioned appliance until such time that equipment is available to undertake such
tests.

20. Fault Finding Chart

Check electrical supply - C.H. Sensor and frost protection
•
•
•
•
CH system pressure is must
be between 1 and 2 bar.
Is water pressure
between 1 and 2 bar?
YES
Check low water
pressure switch cable
connections.
Check and if necessary
replace low water
pressure switch.
YES
Check CH sensor
cable connections.
Is F3 failure code
shown on lcd?
YES
Check the following carefully before starting
Gas supply is on, adequate and purged.
Electric supply is on.
Polarity is correct.
Pump spins freely.
Winter mode is selected by function
knob on front panel.
NO
Is lcd display on?
YES
Select the CH position.
Is F0 failure code shown on lcd?
YES
NO
NO
Does fan at full
speed?
Fill up system to 1 - 2 bar.
YES NO and F7 or F8 or F9 failure code showing on lcd.
Does pump run?
YES
If temperature of the system is less then 6°C, frost protection
system is activated and snow symbol in shown on lcd display.
Is F3 failure code shown on lcd?
NO
Does burner work?
NO
Go to Chart V
Change main PCB.
Chart I
Is 230 V ac present on
NO
terminals X15?
NO
Check supply lead.
Check suppy lead,
F1 -F2 fuse and replace
if necessary.
NO
Is led display on?
NO
YES
NO
Check pump connection cables
and 230 V ac supplying of pump.
YES
Does pump run?
NO
Replace interface
card.
Replace main
PCB
Go to Chart III
38