0020107233_00 - 06/11 - Glow-worm
MAINTENANCE
- 31 -
The following checks should be performed before proceeding
onto specic diagnostics:
• Check the external electrical supply to the boiler is on and
a supply of 230V is present at the ‘L’ and ‘N’ terminals on
the installer interface, refer to section 10.4 for access and
diagram 12.4.
• Check the electrical installation and appliance, carry
out tests for earth continuity, polarity, short circuit and
resistance to earth, using a suitable multimeter.
Remove the front casing panel, see diagram 11.2 and the
control panel securing screw, see diagram 12.1 then lower
into service the position.
Remove the rear panel by prising the retaining clips, see
diagram 12.1.
Carry out the tests at connector plug X17, see diagram 12.2.
Check chassis earth at a bare metal point on the boiler.
• Check that there is a gas supply to the boiler and the gas
service isolation valve is turned on, see diagram 10.1.
• Check pressure at the gas service isolation valve, refer to
section 10.5.
• Check that the heating system pressure indicates at least
1mb, if not, ll and vent the system as described in section
10.2.
• Check that all external controls are on.
• Check the functional ow diagram, 12.5.
Fault codes take priority over all other display functions in the
event of a fault occurring, refer to diagram 12.6.
If multiple faults occur the codes will be displayed for approx.
2 seconds, alternatively.
The Fault memory stores details of the ten most recent faults.
To access this menu, refer to diagram 12.3:
a) Press and hold ‘MODE’ for 5 seconds.
b) When the display shows a ashing ‘0’ press ‘MODE’
button.
c) Press a ‘+’ button to scroll back through the fault memory
(Position 1 is most recent), see fault memory display.
To exit this menu, press the ‘MODE’ button.
The Diagnostic Menu provides the ability to view and
change certain parameters. See diagram 12.7 for available
parameters.
The status codes provide information about the current
operating condition of the boiler and can be accessed through
the diagnostic display, refer to diagram 12.8.
13738
Diagram 12.1
REAR
PANEL
To Next Page
Loading...
Need help?
General