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Siemens Basic Documentation RVP340, RVP350, RVP351 CE1P2545en
Building Technologies 4 Acquisition of measured values 15.03.2011
In the event of a short-circuit or an interruption of one of the 2 measuring circuits,
the controller continues to operate with the other measuring circuit. An error mes-
sage is delivered.
If both measuring circuits do not produce a valid measured value, 2 error mes-
sages are delivered. D.h.w. is no longer heated; the charging pump will be deacti-
vated.
If there is neither an interruption (thermostat open) nor a short-circuit (thermostat
closed) in measuring circuit B31, an error message is delivered. D.h.w. is no longer
heated; the charging pump will be deactivated.
If there is neither an interruption (thermostat open) nor a short-circuit (thermostat
closed) in one of the measuring circuits, an error message is delivered. The con-
troller continues to operate with the correctly working measuring circuit.
If there is neither an interruption (thermostat open) nor a short-circuit (thermostat
closed) in both measuring circuits, 2 error messages are delivered. D.h.w. is no
longer heated; the charging pump will be deactivated.
In the event of a short-circuit or an interruption of one of the 2 measuring circuits,
the controller continues to operate with the other measuring circuit, if possible. An
error message is not delivered.
If both measuring circuits do not produce a valid measured value, an error mes-
sage is delivered. D.h.w. is no longer heated; the charging pump and the collector
pump will be deactivated.
In the event of a short-circuit or an interruption of one of the 2 measuring circuits,
the controller continues to operate with the other measuring circuit. An error mes-
sage is delivered.
If both measuring circuits do not produce a valid measured value, 2 error mes-
sages are delivered. D.h.w. is no longer heated; the charging pump and the collec-
tor pump will be deactivated.
If a measured value of the d.h.w. temperature is not available and the temperature
is queried, the QAW70 room unit displays ---.
4.7 Collector temperature (B6)
4.7.1 Type of sensor
The collector temperature is acquired by a Siemens sensor operating with a sens-
ing element LG-Ni1000 and an extended measuring range.
4.7.2 Error handling
In the event of an interruption of the measuring circuit, an error message is deliv-
ered with a delay of 12 hours and the collector pump is deactivated. This means
that solar d.h.w. heating is no longer provided.
2 storage tank sensors
(operating line 126 = 1)
1 storage tank thermostat
(operating line 126 = 2)
2 storage tank thermo-
stats (operating line
126 = 3)
1 storage tank sensor for
solar d.h.w. heating
(operating line 126 = 4)
2 storage tank sensors
for solar d.h.w. heating
(operating line 126 = 5)
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