S
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VICI
NG
& S
PA
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INSTALLATION & SERVICING INSTRUCTIONS
32
6-720-611-730b (12.05)
INSPECTION & SERVICE
INSPECTION & SERVICE
IMPORTANT: Any service work must be
carried out by competent registered
engineers, such as British Gas or Corgi
registered personnel.
To ensure the continued efficient operation of
the appliance it must be checked at regular
intervals.
The frequency of servicing will depend upon the
particular installation conditions and usage
however, an annual service is recommended.
The extent of the service required by the
appliance is determined by the operating
condition of the appliance when tested by fully
qualified engineers.
NOTE: The appliance is set at the factory and
adjustment to the CO
2
settings (gas/air ratio) is
only required where the appliance has been stripped
down and assembled or if the fan, burner or gas
valve are replaced or the appliance has been
converted to a different gas type. See 'Setting the
gas/air ratio'.
INSPECTION:
Check that the terminal and terminal guard, if
fitted, are clear and undamaged.
If the appliance is in a compartment or cupboard
check that the specified service space around
the appliance is clear.
See 'Boiler Location & Clearances' under the
Pre-Installation section for compartment
clearances.
Check all the joints and connections in the
system and remake any that show signs of
leakage. Refill and re-pressurise the system.
See 'Filling the System' and 'Water Treatment'
under the Commissioning section.
Operate the appliance and take note of any
irregularities. Call up the last fault stored by the
Bosch Heatronic, Service Function '
.0
'.
Refer to 'Fault Finding' under the Fault Finding
& Diagrams section for display codes and
rectification procedures.
SERVICE FUNCTION:
1 To select a service function (level 1- service
functions
.0
to
4.9
): press and hold button (A)
until the display (B) shows '
'.
2 Turn the temperature control (C) to select the
required function, in this case '
.0
', as shown in
display (B).
To delete the last fault code stored:
3 Turn the DHW temperature control (D) anti-
clockwise as far as the stop.
Press and hold button (A) until the display
shows '
[ ]
'.
CAUTION: TURN OFF THE GAS SUPPLY AND ISOLATE THE MAINS SUPPLIES BEFORE
STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS.
IMPORTANT: AFTER REPLACEMENT OF ANY COMPONENTS ALWAYS CHECK FOR GAS
SOUNDNESS WHERE RELEVANT AND CARRY OUT FUNCTIONAL CHECKS AS
DESCRIBED IN COMMISSIONING. ANY O-RING OR GASKET THAT APPEARS DAMAGED
MUST BE REPLACED.
A
B
1
B
2
C
B
3
A
D