Display Codes; Thermal Disinfection - Bosch Greenstar ZBR16-3A Operating Instructions Manual

22 | Thermal disinfection

4.10 Display codes

Display Description
Fault-Code ( chapter 7)
Inspection due
Pump anti-seize function active
Key pad lock active
Condensate trap filling function active
Bleeding function active
Excessively rapid increase in supply temperature (temp. gradient
monitoring).
Heating mode is disabled for two minutes.
If this message appears repeatedly, inform a trained and certified
heating contractor.
Drying function
Table 6
5 Thermal disinfection
When using ZBR..-3A appliances with DHW tank it may be necessary to disinfect the
DHW tank and DHW system after longer idle periods to prevent bacterial
contamination, for example from legionella bacteria. This step is typically not
necessary if the drinking water is chlorinated or ozonated.
Thermal disinfection can also be carried out automatically and on a
regular basis; see operating instructions for the heating control unit
included in the scope of delivery.
Greenstar 6 720 818 061 (2015/11)