Operating Instructions
Table Of Contents
- Table of Contents
- How To Use This Manual
- Chapter 1—Hardware
- Chapter 2—Applications for ATEC— Base VAV
- Chapter 3—Applications for ATEC—VAV with Reheat
- Chapter Overview
- Introduction
- Application 2500: VAV Cooling Only
- Application 2501: VAV Cooling or Heating
- Application 2522: VAV with Electric Reheat or Baseboard Radiation
- Application 2523: VAV with Hot Water Reheat (only one reheat valve)
- Application 2524: VAV Series Fan Powered with One Stage of Electric Reheat
- Application 2526: VAV Parallel Fan Powered with One Stage of Electric Reheat
- Application 2473: Slave Mode
- Chapter 4—Point Database
- Chapter 5—Troubleshooting
- Glossary
- Index
Chapter 5—Troubleshooting
5-12 Siemens Building Technologies, Inc.
2. Check sensor. Contact your local Siemens Building Technologies representative if
sensor replacement is necessary.
L. Points cannot be commanded at the field panel.
1. Incorrect point addresses entered. Correct as needed using Datamate. See the point
database tables in Chapter 2 or Chapter 3—Applications for addresses. Check
whether points can now be commanded.
2. Check priority of points to see if they are overridden. Release as appropriate.
3. Contact you local Siemens Building Technologies representative.
Temperature Sensor Troubleshooting
The following information describes troubleshooting procedures you should use if you encounter
a problem with a temperature sensor used with the controller. Find the symptom that best
describes the problem and perform the corrective action that follows. If the problem persists,
contact your local Siemens Building Technologies representative.
A. The following points read failed (*F*): ROOM TEMP (Point 4),
RM STPT DIAL (Point 13), and DI OVRD SW (Point 19).
The room temperature sensor override switch is stuck. Adjust the cover on the room
temperature sensor to free the override switch.
B. The following points read failed (*F*): ROOM TEMP (Point 4) and RM
STPT DIAL (Point 13).
1. The cable for the room temperature sensor may be unplugged or loose. Check both
ends to ensure that the cable is securely seated.
2. Contact your local Siemens Building Technologies representative.
C. Cannot communicate with the controller through the port on the
room temperature sensor.
1. The cable for the room temperature sensor may be unplugged or loose. Check both
ends to ensure that the cable is securely seated.
2. Connect directly to the controller through the room temperature sensor connection
and check whether communication is possible. If so, the problem lies in the room
temperature sensor or its cable. If not, the problem is with the controller.
3. Contact your local Siemens Building Technologies representative.