Norcold AC Heating Element 621702 (fits many older style models)

Norcold AC Heater Element 621702/ 638365MC (N6XX/ N8XX/ N1095/ 600/ 6000/ 900/ 9000/ 462/ 482 models)

This heater is made by MC Enterprises as Norcold has discontinued the part all together. It's an exact replacement.

This model heater fits the N6/ N8/ N1095/ 600/ 600/ 900/ 9000 series refrigerators with a cooling unit serial number below 11231023. If your cooling unit serial number is above that number, you need: 
AC Heater 630811/ 638374 (<click)

*The cooling unit serial number can be found on the cooling unit itself. Remove the rear side panel on the outside of your RV to access the back of the refrigerator.

This model heater fits the following models:

• N6XX: N611, N621, N622, N641
• N8XX: N811, N821, N822, N841
• N1095
• 400 series: 462, 482
• 600 series: 652, 653, 662, 663, 682, 683
• 6000 series: 6152, 6062, 6162, 6082, 6182
• 900 series: 962, 963, 982, 983
• 9000 series: 9162, 9163, 9182, 9183

Troubleshooting 

Potential problems that a new ac heater/ heating element could solve:

• N611 or N811 red light flashing three times
• N621 or N821 displaying an "n" code
• N641 or N841 displaying "ac he" code
• No cooling on AC mode
• Insufficient cooling on AC mode

Installation

Time: 30 minutes or less

Tools:

• PB Blaster (optional)
• Rubber mallet (optional)
• Phillips head screwdriver
• Gloves

Steps:

• Turn refrigerator off for several hours to let things cool down on and around the cooling unit
• Unplug refrigerator from the AC outlet in the back and turn refrigerator off from front control panel
• Remove power board cover
• Take a picture of the board before disconnecting AC wires
• AC heater wires are labeled AC HT HI and AC HT LO (both leads are interchangeable)
• Follow the wires over to the flu
• The AC Heating rod drops down into a slot on the flu that is buried within the insulation.
• Remove tin shroud that is holding insulation around the flu and locate the AC heater/ AC heating element
• If the AC heater does not slide out easily, you may need to use PB Blaster or Liquid Wrench to break up corrosion. Gently tap with a rubber mallet and it should come out just fine.
• Slide new AC heater into the old slot and connect its wires in place of the old. 
• Once everything is connected, turn refrigerator on and plug it back in to verify that there is no AC heater fault displayed.