Chapter 4 – Troubleshooting
Procedure if DO MODE is set to NCLOSE.
1. Release the points POS.NEG and ACTIVE.NTRAL
2. Set DO MODE to NCLOSE.
3. Connect the meter to pins 9 and 10. See Figure 7.
4. Turn the key to the Infectious Isolation/Negative Pressure position.
•
•
•
The meter should indicate a closed circuit. If the meter does not change in value,
contact your local Siemens Building Technologies representative.
5. Turn the key to the Protective Isolation/Positive Pressure position.
The meter should indicate an open circuit. If the meter does not change in value,
contact your local Siemens Building Technologies representative.
6. Turn the key to the No Isolation/Neutral position.
The meter should indicate a closed circuit. If the meter does not change in value,
contact your local Siemens Building Technologies representative.
SEN0207R1
+
-
++
--
PIN# 1 2 3 4 5 6 7 8 9 10 11 12 13 14
CV Controller
Pressure Mode
Figure 7. DPM Pressure Mode Point.
Siemens Building Technologies, Inc. 27
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