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Worcester-Bosch GB162 Manual

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Energy saving and environmental protection
6720814333 (2018/04) 9
7.2 A fault has occurred but no fault code is displayed
It is possible that even though a fault code is not displayed the boiler
does not operate according to your expectations. You should then check
the following:
Heating system does not heat up.
▶ Check in the information menu whether a fault code is displayed and
try to remedy the fault.
▶ Check the set boiler temperature in the setup menu.
▶ Check the settings of the heating controller by referring to its manual.
If the fault code still persists contact your installer.
▶ Note the fault code.
▶ State the appliance type and serial number. These are listed on the
right-hand side of the boiler.
Fig. 7 Right-hand side of the boiler
[1] Serial number
[2] Device type
8 Energy saving and environmental protection
8.1 Energy savings
Efficiency optimised
The boiler has been designed to keep gas consumption and
environmental pollution to a minimum and to maximise comfort.
The gas supply to the burner is controlled according to the heat demand
of the heating system.
The boiler operates with a “modulating control.” This control adjusts the
gas consumption in relation to the existing heat energy demand. The
modulating control reduces temperature fluctuations so the heat is
distributed evenly in the rooms.
The modulating control enables the boiler to still use less gas when
burning continuously than a boiler which is continuously being switched
on and off.
Underfloor heating system
▶ Never set the flow temperature higher than the maximum flow
temperature recommended by the installer.
Living space ventilation
Do not ventilate by leaving the windows slightly open. This draws heat
continuously from the room without significantly improving the quality of
the room air.
▶ Ventilate the room intermittently. Close the doors of the room to be
ventilated.
▶ Turn down the thermostatic valves of the radiator(s) in the room
when ventilating it.
8.2 Environment / disposal
Environmental protection is a fundamental corporate strategy of the
Bosch Group.
The quality of our products, their efficiency and environmental safety
are all of equal importance to us and all environmental protection
legislation and regulations are strictly observed.
We use the best possible technology and materials for protecting the
environment taking into account of cost-effectiveness.
Packaging
We participate in the recycling programmes of the countries in which our
products are sold to ensure optimum recycling.
All of our packaging materials are environmentally friendly and can be
recycled.
Old appliance
Old appliances contain recyclable materials.
The assemblies are easily separated and the types of plastic are clearly
marked. In this way the individual components can be easily sorted and
directed to recycling or disposal.
E 9 2 2 4 The temperature
measured by a
thermostat in the boiler
is too high.
• Check the water
pressure of the boiler
and top up if necessary.
• Check whether a
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the boiler.
E A 2 2 7 No burner ignition. • Check that the gas
isolator is open.
• Reset the boiler.
E 9 2 7 6 The temperature
measured by the
sensors in the boiler is
too high.
• Check the water
pressure of the boiler
and top up if necessary.
• Check whether a
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the boiler.
E 9 2 8 5
E F 3 4 5 The sensors inside the
boiler detected
unexpected
temperatures.
• Check whether a
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the boiler.
F d 2 3 1 The power was briefly
interrupted during a
fault.
• Reset the boiler.
H 0 7 The water pressure is
too low.
• Check the water
pressure of the boiler
and top up if necessary.
r E The boiler is reset.
Code Explanation Corrective measure
Table 6 Operating and fault codes
6720813683-2.1TD
2
1
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