Resistance To Earth Check; Fault Finding; Fault Codes - VOKERA Syntesi Installation & Servicing Instructions Manual

or a supply fault, consult the local electricity
supplier for advice.
7.7.5

RESISTANCE TO EARTH CHECK

Isolate the appliance from the electrical supply,
and using a suitable multi-meter carry out a
resistance test. Connect test leads between the
Live & Earth connections at the appliance
terminal strip (fig.16). If the meter reads other
than infinity there is a fault that must be isolated,
carry out a detailed continuity check to identify
the location of the fault.
IMPORTANT
These series of checks must be carried out before
attempting any faultfinding procedures on the
appliance. On completion of any task that
required the disconnection and re-connection of
any electrical wiring or component, these checks
must be repeated.
7.8

FAULT FINDING

Before attempting any faultfinding, the electrical
checks as detailed in 7.7 must be carried out.
Isolate the appliance from the electrical supply.
Disconnect any external controls from terminals
TA & Spare of the appliance terminal strip and
make safe. Insert a solid link-wire between
terminals TA & TA.
Ensure jumper tags are fitted to the main PCB at:
JP6
JP7
JP8 (Nat. Gas only).
M7
NOTE
If the Vokera remote-control (RC05) is connected
to the appliance, it should be disconnected during
any faultfinding checks.
Restore the electrical supply to the boiler and
turn the selector switch to the on position. The
boiler should now function as described in section
7.2. Should the boiler fail to respond, the internal
fuses and connectors should be checked to
ensure integrity and continuity. If the boiler still
fails to respond, refer to the detailed faultfinding
flowcharts overleaf.
7.9

FAULT CODES

When the boiler displays a fault code, the
appropriate code is shown on the display,
accompanied by a flashing red LED. To reset the
boiler, slowly turn the mode selector switch to
the reset position then back to the on position. If
the boiler does not reset, refer to the following
section and the detailed faultfinding flowcharts
overleaf.
FAULT CODE 01
Fault code 01 appears when the burner has failed to ignite,
or the flame supervision system has failed to detect a flame.
Check incoming gas supply
Check spark electrode
Check polarity
Check integrity of flue system
Check gas valve
Check ignition control PCB
30
Supplied By www.heating spares.co Tel. 0161 620 6677
FAULT CODE 02
Fault code 02 appears if the boiler has overheated.
Check high limit thermostat
Check thermistors
Check pump
Check gas pressures
FAULT CODE 03
Fault code 03 appears if the boiler or flue system has devel-
oped a fault.
Check operation of fan
Check flue venturi
Check analogue pressure switch
Check flue system
FAULT CODE 04
Fault code 04 appears if the pressure in the boiler is low.
Check water pressure
Check water pressure switch
Check water pressure gauge
FAULT CODE 05
Fault code 05 appears if the appliance is connected to the
optional remote control (RC05) and there is a communica-
tion problem.
Check wiring between RC05 and appliance
FAULT CODE 06
Fault code 06 appears if a problem exists with the second-
ary (DHW) thermistor.
Check thermistor
Check wiring continuity
FAULT CODE 07
Fault code 07 appears if a problem exists with the primary
thermistor.
Check thermistor
Check wiring continuity
FAULT CODE 08
Fault code 08 appears if the burner thermostat has been
activated.
Check gas pressures
Check burner thermostat
Check wiring continuity
FAULT CODE 09
PCB fault
FAULT CODE d1
Fault code d1 appears if the condense trap/pipe has become
blocked.
Ensure the condense trap is clear
Ensure the condense pipe is clear
FAULT CODE d2
Fault code d2 appears if a problem exists with the condense
sensor.
Check wiring continuity
Check condense sensor