Data Sheet for Product

Siemens Building Technologies, Inc. Page 5 of 8
Document No. 127-0014
Table 6. Alarm: Fault Conditions
(Points 21 and 43) for Input Points.
Value Description
24 Supply Vanes Open after Unit is Off or Closed after
Unit is on.
25 Fan Fail. Airflow switch open after unit is on.
26 Supply Temperature Below Low Limit after Unit is On.
27 Supply Temperature Above High Limit after Unit is
On.
28 Return Temperature Above High Limit after Unit is
On.
29 Supply Air Temperature Sensor Shorted or Open and
is selected as the Control Temperature.
30 Return Air Temperature Sensor Shorted or Open and
is selected as the Control Temperature.
31 Duct High Limit Switch is Open. SAT Units only.
32 Smoke Detector Input Open.
33 Freeze Shutdown. Digital freeze input closes while
unit is operating.
35 Outdoor Air Temperature Sensor Shorted or Open
and is selected as the Control Temperature.
36 Mixed Air Temperature Sensor Shorted or Open and
is selected as the Control Temperature.
37 Zone Air Temperature Sensor Shorted or Open and is
selected as the Control Temperature and no Return
Air Temperature Sensor is installed.
38 Outdoor Air Damper not Open when fan should be
operating on a 100% Outdoor Air Unit.
Table 7. Heating Control Status
(Point 32) for Input Points.
Value Description
0 Off – High Temperature
1 Off – Schedule
2 Off – Bridge
3 Off – Network
4 Off – Enable Switch
5 Off – Manual
6 Off – Fault
7 Heat Enabled