Error Messages; Application Examples - Siemens QAX910 Manual

Error messages

Supply state

Application examples

1 room group with
room temp. control
and DHW heating
without precontrol
Siemens
Building Technologies
When power is restored, the central apartment unit and its components will resume
normal control operation.
To facilitate fault tracing, the QAX910 delivers detailed error messages.
They are output as clear-text messages, thus simplifying the interpretation of mes-
sages by the user or the heating engineer.
Error messages can be used for triggering other events, such as optical or audible
alarms.
The last 10 error messages are saved as a history and can be individually re-
trieved.
The central apartment unit can be reset to its supply state via an operating line.
M1
M2
M1 Room group pump
M2 DHW diverting valve
E Heating circuit
T Room unit and / or
room temperature sensor
Central apartment unit QAX910
B
T
E
K E
Y
Y
2707H04
Y Heating circuit valve (2-position) or
radiator control actuator SSA955
B DHW sensor
K Electric immersion heater
T
CE1N2707en
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06.01.2009