NORCOLD®
Norcold Power Board 628661 (new style board fits most models!)
Norcold Power/ Circuit Board 628661 | New Style
Below are all of the parts we stock for the Norcold Polar N7 and NA7 models. This refrigerator is still in production as are all of the part for it. This refrigerator is brand new in the Norcold line of refrigerators! It replaces the following models and is the exact same cut out dimensions to make the new install as simple as possible:
Bins, shelves, trays, etc.
Norcold Optical Display Board 639550 (fits select N7/ N8 models)
This optical fits the following Norcold Polar models:
If your model has an "L" before the "X" in your model number, you need:

This optical fits the following Norcold Polar models:
If your model has an "L" before the "X" in your model number, you need:

Norcold Optical Board 639509 (fits the N7V/ NA7V/ N8V/ NA8V)
This is the optical board that fits all N7 and N8 models that have a "V" after the model number, regardless of serial number.
Lucky for you, there is only ONE rear power board made for all Norcold N7 model refrigerators. You can view it below:
This component senses the temperature inside your refrigerator compartment. It tells the refrigerator to turn on or off in order to reach the desired temperature.
Works with the following Norcold refrigerator models:
Any numbers or letters after the model numbers are not important for this part.