User Guide
Table Of Contents
- Contents
- 1 Key to symbols and safety instructions
- 1.1 Key to symbols
- 1.2 Safety instructions
- 2 Information about the appliance
- 3 Preparing the appliance for operation
- 4 Operation
- 4.1 Overview of controls
- 4.2 Switching the appliance ON/OFF
- 4.3 Turning the space heating ON
- 4.4 Programming the heating control unit
- 4.5 ZBR..-3A appliances with DHW tank: Setting the DHW temperature
- 4.6 ZWB..-3A appliances (combi boilers): Setting the DHW temperature
- 4.7 Setting manual summer mode
- 4.8 Setting frost protection
- 4.9 Activating the key pad lock
- 4.10 Display codes
- 5 Thermal disinfection
- 6 Energy saving tips
- 7 Troubleshooting
- 8 Maintenance
- 9 Environmental responsibility/disposal
- 10 Quick reference
- Index
22 | Thermal disinfection
6 720 806 993 (2013/03)Greenstar
4.10 Display codes
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.
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. If the slab drying function is activated on the
outdoor reset control unit, refer to the operating instructions for the
heating control unit included in the scope of delivery.
Table 6