Glow-worm Black Beauty 4 - Manual (Page 18)

18 221906B
START HERE
Fire will not light
Turn off appliance tap; turn
on appliance tap and
observe spark
Spark
across gap,
ignition No spark
across
gap Spark
no
ignition
Using a match, ensure correct
functioning of burner in
all setting positions. Check that
electrode and piezo unit connections
are satisfactory. Check that
burner pressure is as specified.
Correct any fault found.
Spark
across gap,
ignition No spark
across
gap
Spark
no
ignition
Ensure gap is within specified
tolerance, refer to SERVICING
Turn tap to energise igniter
Disconnect ignition lead from
electrode, place connector
within 4mm of burner and
operate piezo
Spark
across gap,
ignition Spark
no
ignition
Replace pilot assembly and
reassemble ignition system
Spark
across gap,
ignition Spark
no
ignition
Ensure gap is within specified
tolerance. Turn tap to energise
igniter
Spark
across gap,
ignition Spark
no
ignition
Remove ignition lead from piezo unit
and place screwdriver between
appliance chassis earth and piezo
unit, leaving 4mm gap between blade
and spade connector.
Operate igniter.
Spark
across
gap No spark
across
gap
Renew ignition lead and
reassemble ignition system
Spark
across gap,
ignition Spark
no
ignition
Change piezo unit and
reassemble ignition system
Spark
across gap
ignition
Check several times that
ignition is satisfactory
END
9 Fault Finding
Diagram 9.1
9631
9.1 Fire Font Ignition
Remove casing as section 8.1.
Refer to Fire Front Ignition Fault Finding, diagram 9.1.
9.2 Flue Blockage Safety Device
If the device operates it indicates there could be a problem with
the chimney. First make sure air vents are free of obstructions,
by carrying out spillage checks as section 6.3.