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Siemens Building Technologies Basic Documentation RVD110, RVD130 CE1P2381E
HVAC Products 9 Function block Standard values and fault indication 27.05.2004
9 Function block Standard values and
fault indication
9.1 Operating lines
Line Function, parameter Unit Factory setting Range
49 Reset of operating lines 2...23 (end-user level) 0 0 / 1
50 Display of faults Display function
9.2 Reset end-user level
If operating line 49 is set to 1, all the current settings on the end-user level (operating
lines 2...23) will be cleared. In that case, the factory settings will be used again.
Proceed as follows:
1. Select operating line 49.
2. Keep buttons
and depressed until the display changes. A flashing 0 on the
display is the normal status.
3. If 1 appears, the controller has retrieved the factory settings.
9.3 Display of faults
Faults in the measuring circuits detected by the controller appear on the display as Er
(error) as well as on operating line 50, accompanied by an error code:
Error code Cause
10 Fault outside sensor
30 Fault flow temperature sensor
40 Fault return temperature sensor on the primary side
42 Fault return temperature sensor on the secondary side
50 Fault d.h.w. temperature sensor
61 Fault room unit
62 Device with wrong PPS identification connected
86 Short-circuit on the room unit bus (PPS)