Start troubleshooting – Bell & Gossett S13654B Technologic 5500 Series Pump Controller User Manual
Page 17
17
No
No
No
Correct the wire
connections
Change the node number
as defined by the JC
technician
The JC device requires the
JC DLL file for the Technologic
controller to allow the JC
device to see the Technologic
data points.
Change the node number
as defined by the JC
technician
Yes
Yes
Yes
Yes
Yes
Johnson Controls N2 drivers are working
Is B&G Write count active?
(Are write values non-zero and
constantly changing?)
Is B&G Read count active?
(Are read values non-zero and
constantly changing?)
View the “COMMUNICATION” test screen
Is the device
type setting correct in the JC
master setup?
Is the node
number setting correct?
Range 1 - 255
Is RS485 Connection Correct?
Data <-> +; N_data <-> -
Start Troubleshooting
JOHNSON CONTROLS N2 TROUBLESHOOTING FLOW CHART
Contact Building Control
Manufacturer for the correct
JC N2 communication
requirements
No
Is
B&G Read Count
active?
Cycle the Control
Panel’s Power
No
No
Yes
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