FAQs: Thermostat Troubleshooting
I installed my controller and there is nothing on the display.
If you have nothing displayed on your controller then you are most likely not getting power to the controller. The first thing you have to do is ensure that the controller is properly mounted to the backplate. There are two tabs at the top of the controller that interconnect with the backplate, once you line those up, swing the controller down until the bottom tabs engage.
If you are using an EPA-20 or EPA-60 make sure the power adapter is plugged in to a live power outlet. Also, double check that your wires are punched down in the correct order according to the color codes as documented. You should also make sure that the wires are fully punched down into the EPA-20/60. Once you have verified those connections, you should also check the wiring on the backplate assembly of the controller and make sure the connections are in the right order and secure, making good contact with the screw heads on the backplate.
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My controller's display is working but I have no network link indication.
This is a typical indicator of a connection problem with your Ethernet wiring. Troubleshooti this in the same method as you would connecting a pc to your network. Verify your Ethernet cabling using a pc when possible and ensure that you can obtain an IP address from your DHCP server.
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Why do I get a "Connection Refused" during a software upgrade?
The most likely causes of a "Connection Refused" during a software upgrade are:
- Wrong IP address of the controller
- Wrong Port number of the controller
- A firewall application running on your pc is blocking access to the controller
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How do I perform a Factory Reset?
A Factory Reset is a procedure that is used to erase all user configuration from the controller. This will set the controller back to factory defaults which means you will have to re-establish connectivity in the same method as when the unit was first installed.
To perform a factory reset, do the following:
- Power down the controller (remove from backplate or disconnect power to the controller)
- Hold down the center bottom button while restoring power and continue to hold the button down until the LCD displays characters.
- Release the button and the controller has now been reset to factory defaults.
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Can I backup and restore my controllers configuration?
Currently, you can backup and restore your configuration by using the Upgrade Utility. Whenever you run the upgrade procedure, your configuration at the time of the upgrade is saved on the pc that ran the utility.
If you want to create a backup without upgrading your controller, select the Save Configuration option and the controller configuration will be saved to your hard drive.
If you want to restore the configuration at some point in the future, just run the utility and select Restore Configuration. You will be provided a list of configuration files that are date and time stamped and also includes the IP address of the controller that the configuration was obtained from.
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Why is my controller's IP address 0.0.0.0?
By far, the most common reason the controller does not have a valid IP address is because of improper wiring. Once the wiring is confirmed to be correct, you should verify that you have a functioning DHCP server on your network. The easiest way to test this is to use a laptop or other pc and see if it is able to get an IP address via DHCP.
If you do not have a vaild DHCP server, there is a way to have the thermostat use a "fallback" address. The following method will work on NT series units running 2.5.x or great and on all TM series units.
To view the controller's IP address, press next and navigate to Network Status and press select. When you are looking at the controllers IP address, the left button will have the abort label above it. Once you can press it within 60 seconds it will fall back to an ip address of 169.254.111.111. Once the controller is at that IP address, you can set your pc to the same subnet (169.254.111.x) and get web access to the controller's web server. Then you can access the network settings page and statically assign the IP address that you want.
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