Data Sheet for Product

Siemens Building Technologies, Inc. Page 5 of 6
Document No. 127-0005
Table 4. Unit Status (Point 42).
Value Description
0 Off – Manual Set Point
1 Off – S-1 Switch. System switch is in stop position.
2 Off – System Communication
3 Off – Remote Switch. Chiller commanded off via the network.
4 Off – Time Schedule. The time schedule indicates an off time
period.
5 Off – Compressor 1 or 2 Fault (Alarms). Condition exists that
prevents normal operation. Chiller disabled.
6 Off – Outside Air Temperature Lockout
7 Off – Pump-down Switches PS-1 And PS-2. Chilled water
requirements met. Compressors unload. Liquid line solenoid
valves are deenergized. Condenser fans shut off.
8 Off – Ready To Start. Only when none of states 1–6 are true.
9 Starting
10 Waiting For Flow. Chiller enabled. Remains in this state until
chilled water is detected in field installed flow switch.
11 System Cooling
12 Cooling Stage-up. Chilled water is above set point.
13 Cooling Stage-down. Chilled water is below set point.
14 Cooling Staging
15 Manual Cooling Staging