Environmental protection and disposal
Greenstar 8000 Life – 6720883865 (2019/02)
64
Table 28 Indicators and fault displays
10.1.3 Faults that are not displayed
Table 29 Faults that are not shown on the display
11
Environmental protection and disposal
Environmental protection is a fundamental corporate strategy of the
Bosch Group.
The quality of our products, their economy 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 account of economic considerations.
Packaging
Where packaging is concerned, we participate in country-specific
recycling processes that ensure optimum recycling.
All of our packaging materials are environmentally compatible and can be
recycled.
Used appliances
Used appliances contain valuable materials that can be recycled.
The various assemblies can be easily dismantled. Synthetic materials are
marked accordingly. Assemblies can therefore be sorted by composition
and passed on for recycling or disposal.
Old electrical and electronic appliances
Electrical or electronic appliances that are no longer
serviceable must be collected separately and sent for
environmentally compatible recycling (in accordance with
the European Directive on Waste Electrical and Electronic
Equipment).
To dispose of old electrical or electronic appliances, you
should use the return and collection systems put in place in the country
concerned.
2970 B
Pressure drop in heating system too rapid
–
2971 B
System pressure too low
1. Vent the heating system.
2. Top up water until the preset pressure is reached.
3. Replace the cable to the pressure sensor.
4. Replace the pressure sensor.
Fault
code
Fault
category
Fault text on the display, description
Remedy
Appliance faults
Remedy
Combustion noises too loud; rumbling noises
▶ Check the gas type.
▶ Check the gas supply pressure.
▶ Check the flue system; clean or repair if required.
▶ Check the gas/air ratio.
▶ Check the air/gas ratio control valve; replace if required.
Flow noises
▶ Set the pump rate or pump characteristic map correctly and match to the maximum
output.
Heat-up takes too long.
▶ Set the pump rate or pump characteristic map correctly and match to the maximum
output.
Flue gas values incorrect; CO content too high.
▶ Check the gas type.
▶ Check the gas supply pressure.
▶ Check the flue system; clean or repair if required.
▶ Check the gas/air ratio.
▶ Check the air/gas ratio control valve; replace if required.
Violent ignition, poor ignition.
▶ Check the ignition transformer with service function t01 for misfiring, replace if
required.
▶ Check the gas type.
▶ Check the gas supply pressure.
▶ Check the power supply.
▶ Check the electrodes with cable; replace if required.
▶ Check the flue system; clean or repair if required.
▶ Check the gas/air ratio.
▶ For natural gas: check the external gas flow monitor, replace if required.
▶ Check the burner, replace if required.
▶ Check the air/gas ratio control valve; replace if required.
Condensate in air box
▶ Check the non-return valve in the air gas manifold, replace if required.
Combi boilers: hot water outlet temperature is not
reached.
▶ Check the turbine, replace if required.
▶ Check the gas/air ratio.
Combi boilers: DHW volume is not reached.
▶ Check the plate heat exchanger.
No function, the display remains dark.
▶ Check the electrical wiring for damage.
▶ Replace defective cables.
▶ Check the fuse, replace if required.
