INSPECTION & SERVICE
INSTALLATION & SERVICING INSTRUCTIONS
33
8 716 115 216b (09.2008)
INSPECTION & SERVICE
IMPORTANT: Any service work must be
carried out by competent registered
engineers, such as British Gas or other
CORGI registered personnel.
NOTE: A service must NOT be attempted
if a CO/CO2 analyser is NOT available.
• 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.
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
if applicable.
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 '.6A'.
Refer to 'Fault Finding' under the Fault Finding
& Diagrams section for display codes and
rectification procedures.
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 - MASTER SWITCH FOR ON/OFF
B - MAINS ON/OFF INDICATOR + FAULT DIAGNOSTIC LIGHT (BLUE)
C - TEMPERATURE CONTROL
D - BURNER ON INDICATOR LIGHT (GREEN)
E - FAULT RESET BUTTON
F - SERVICE BUTTON
H - NOT USED
K - DISPLAY
L - BOOST BUTTON (SERVICE ONLY)
M- NOT USED
A
D
F
L
C
B
E
H
M
K
SERVICING
& SPARES
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