Solution
This error is caused when the NHR 9420 front panel display is not able to communicate with the NHR 9420 hardware IP address. The 192.168.0.149 IP address is the default IP address of the NHR 9420 hardware, so more likely the IP address has been changed when this error occurs. To resolve this error, you can follow the steps below.
Configure the NHR 9420 hardware IP address to a known IP address:
- Turn off the master module’s breaker and switch the options switch (#1) to the ON position then turn the module’s breaker back on.
- This will force the module to use a fixed IP address of 192.168.0.2.
- This is a temporary configuration intended to allow the system’s IP address to be known for the purposes of configuration.
- Open a web browser and browse to "http://192.168.0.2". This will open the configuration screen as shown below.

- Selecting “Blink LED” in the left menu will cause the module to blink the LAN LED. This may be used to ensure the proper module has been selected before making a change.
- Select LAN Configuration to adjust the LAN configuration.

- Here a static IP or DHCP configuration may be made. If DHCP is selected, NHR recommends IT assign the modules MAC address to a static DHCP address for proper operation. Be sure to record the new IP address as it will be required by the touch panel.
- Power Cycle the module and continue with the touch panel configuration.
Configure the NHR 9420 Touch Panel to recognize the new NHR 9420 hardware IP address:
- Click the “Menu” button (three vertical dots in the top right corner of the screen) located at the upper right left of the touch panel. This will open the additional menu options.
- Select "IP Address"
- Provide the NHR 9420 hardware IP address configured in the previous steps and click "OK".
- For example, the screenshot in the steps above shows 192.168.0.246. The IP address you configured on the browser page is what you'll use.
- Note: This is not the touch panel's IP address; it informs the touch screen where to look for the hardware IP address on the network.
- Select "Back"
- If the module has the same domain (first three numbers of the IP address), the Touch Controller will now load and is ready for use. (No further steps required).