Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Flow temperature, demand-controlled (basic type C) 03.10.2011
Settings:
 Chilled water flow setpoint = 8 °C
 Flow temperature increase max = 0 K
 Setpoint compensation by outside air humidity absolute (with enthalpy
calculation SEZ220 or RMS705B):
[w-compensation 1] Delta = 10 K
[w-compensation 1] Start = 6 g/kg
[w-compensation 1] Endp = 13 g/kg
[w-compensation 2] Delta = 0 K
13.8 Troubleshooting
If the flow temperature is missing, the plant is switched off and fault message [Main
contr var 1] sensor error" is triggered.
If the bus anticipates a heating / cooling changeover signal but no such signal is
sent, a fault message is generated and the plant set to heating operation.
No. Text Effect
3011 [Main contr var 1] sensor
error
Urgent message, with plant stop; must
not be acknowledged
5801 H/C changeover signal
failure
Urgent message; must not be
acknowledged
Fault status messages