August 14, 2023 41
Chapter 5 Troubleshooting
Topics covered in this chapter
♦ Shutting down the controller
♦ Resolving a passphrase mismatch
♦ Reviewing a controller’s TCP/IP changes
♦ Reviewing a PC’s TCP/IP changes
♦ Restoring factory defaults (EC-BOS-9)
♦ Resetting platform credentials (EC-BOS-9)
During commissioning, it is possible to run into problems. For instance, you may type an IP address incorrectly
when entering it, and as a result be unable to regain access. This chapter provides information that can help
with troubleshooting or general controller operations.
Shutting down the controller
This procedure safely prepares the controller before you remove power.
Prerequisites: The controller is powered on. Any running devices (HVAC, boiler, meter, etc) have been set in a
standby mode.
Step 1 Press and hold the SHUT DOWN button until the SHUT DOWN LED flashes (about 5 seconds).
NOTE: Releasing the button after the flashing LED starts confirms that the button press is intentional.
After about 10 seconds, the BEAT LED is no longer lit, indicating that the shut down preparation proc-
ess is complete.
Step 2 Remove power from the controller.
Shut down is complete.
Resolving a passphrase mismatch
If a controller fails, you can remove its SD or microSD card and insert it into a replacement unit and keep your
business running. However, the removable card contains the system passphrase for the original unit, which
does not match the passphrase for a replacement unit. This results in a boot sequence failing due to a pass-
phrase mismatch indicated by a Stat LED flashing with a 50% duty cycle and a 1 second period.
Prerequisites: A controller has failed. You removed its memory card and inserted it into a replacement unit,
but the replacement unit will not boot due to a passphrase missmatch. You are working in EC-Net 4 Pro running
on a PC that is on the same network as the controller. You know the passphrase for the original controller.
If you are monitoring the debug port, this notification banner opens in the serial shell.
Figure 4 System passphrase mismatch warning in the serial shell
NOTE: The following shows a EC-BOS-8 - shell connection. EC-BOS-9 message is similar.
This warning prompts you to log in using platform credentials and update the system passphrase via the serial
connection.
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