Fault Handling - Siemens Synco 700 Basic Documentation

Setpoints
Legionella protection
Note
Configuration errors
Faulty storage tank sensor
Faulty primary flow sensor
Building Technologies
HVAC Products
Consumer control only uses the 2 setpoints "Normal" and "Reduced".
On the service level, it is also possible to set a setpoint reduction against the general
legionella setpoint. The legionella setpoint of consumer control is calculated as follows:
Legionella setpoint – Legionella setpoint reduction
Main menu > DHW > Setpoints consumers > ... or
Main menu > Settings > DHW > Setpoints consumers
Operating line
Legionella setpoint reduction
Normal setpoint
Reduced setpoint
Legionella protection of consumer control requires the circulating pump to be running.
This can be a pump controlled by the controller or an external pump. In the case of an
external pump, the following setting is required:
Main menu > Commissioning > Settings > ... or
Main menu > Settings > DHW > DHW > External circulating pump
The setting to be made is "Yes".
The user must ensure that the external pump is in operation during the time the le-
gionella function is performed.
For legionella protection, the general settings of the legionella function apply. For
detailed information, refer to section 10.6 "Legionella protection".
The setpoints selected here do not act on the storage tank setpoints or on the setpoints
of direct DHW heating. The user must ensure that sufficient amounts of heat are avail-
able.

10.12 Fault handling

Number Text
5601 DHW plant type undefined
This fault status message appears when the plant's configuration is incomplete so that
the controller is not able to make an assignment to a DHW plant type.
Number Text
71 DHW stor tank sensor top
error
72 DHW stor tank sensor bott
error
In the event one of the storage tank sensors is faulty, storage tank charging is con-
trolled according to the second storage tank temperature (if available).
If there is no second storage tank temperature, charging will be aborted, the pump(s)
switched off and the mixing valve (if present) driven to the fully closed position.
Number Text
DHW flow sensor primary
74
error
If the sensor is required for control (plant types DHW 2 and DHW 4) and no secondary
flow temperature is available (plant type DHW 4), the mixing valve will fully close.
Modular Heating Controller RMH760B
10 DHW heating
Range
0...20 K
5...140 °C
5...140 °C
Effect
Urgent message; must not be acknowl-
edged
Effect
Nonurgent message; must be acknowl-
edged
Nonurgent message; must be acknowl-
edged
Effect
Nonurgent message; must be acknowl-
edged
Factory setting
2 K
55 °C
40 °C
179/238
CE1P3133en
05.02.2007