Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 10 DHW heating 2017-09-29
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
available.
10.12 Fault handling
Number
Text
Effect
5601 DHW plant type undefined
Urgent message; must not be
acknowledged
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 Effect
71
DHW stor tank sensor top
error
Nonurgent message; must be
acknowledged
72
DHW stor tank sensor bott
error
Nonurgent message; must be
acknowledged
In the event one of the storage tank sensors is faulty, storage tank charging is
controlled 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
Effect
74
DHW flow sensor primary
error
Nonurgent message; must be
acknowledged
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.
Number Text Effect
75
DHW flow sensor sec error
Nonurgent message; must be
acknowledged
If the sensor is required for control (plant types DHW 3, DHW 4, and DHW 6) and no
primary flow temperature is available (plant type DHW 4), the mixing valve will fully
close.
Number
Text
Effect
76
DHW flow sensor cons
error
Nonurgent message; must be
acknowledged
The consumer’s mixing valve will fully open and no legionella function will be performed
in consumer control.
Number
Text
Effect
77
Faulty DHW return sensor
Nonurgent message; must be
acknowledged
Return temperature limitation is no longer possible.
Note
Configuration errors
Faulty storage tank sensor
Faulty primary flow sensor
Faulty secondary flow
sensor
Faulty consumer flow
sensor
Faulty return sensor