Trying to identify a refrigerator temperature sensor, display board or power board? RV refrigerators can use several electronic components with very different functions. A thermistor senses temperature; a front control board handles user settings; a rear power board or compressor driver manages electrical operation. Use the exact model and part number to find the correct assembly.
Identify the electronic component by function
Original simplified component-location diagram. Actual placement differs by refrigerator model; use the manufacturer’s exploded view before disassembly.
Refrigerator thermistors and temperature sensors
A thermistor is a temperature-dependent sensor. It is not the same component as a gas flame thermocouple, a mechanical thermostat or a cooling-fan thermal switch. Thermistor harnesses, connectors and mounting styles vary by refrigerator family.
Temperature thermistor and coverNorcold 50888 / 640149View product & availability
Lamp and thermistor wire assemblyNorcold 618548View product & availability
Refrigerator thermistor assemblyDometic 38510590422View product & availabilityFront display and user-interface boards
A front eyebrow or optical board is used for controls and indicators. The correct board depends on the refrigerator series and sometimes the serial number; a front board does not automatically replace a rear power module.
N8DC/N10DC front user-interface boardNorcold 640089View product & availability
Optical display control boardNorcold 628663View product & availabilityRear power boards and compressor drivers
Absorption refrigerators and 12V compressor refrigerators use different electrical architectures. A Norcold compressor power module, a Dometic gas/electric control board and a Furrion compressor driver are not interchangeable.
| Brand | Part number | Component | Listing |
|---|---|---|---|
| Norcold | 640178 | N8DC/N10DC rear compressor power module | View part |
| Norcold | 628661 | Main power board for specified gas/electric models | View part |
| Dometic | 3316872.900 | DM2672/DM2872 circuit board | View part |
| Furrion | C-FCR10DCGTA-006 | Arctic compressor driver board | View part |
N8DC/N10DC rear compressor power moduleNorcold 640178View product & availability
Main power board for specified gas/electric modelsNorcold 628661View product & availability
DM2672/DM2872 circuit boardDometic 3316872.900View product & availability
Arctic compressor driver boardFurrion C-FCR10DCGTA-006View product & availability
Confirm the part before ordering
Record the full refrigerator model and serial number, compare the existing component’s manufacturer number, and review the matching exploded parts drawing. Some replacement kits supersede earlier numbers or require specific harnesses. Do not assume that a similar-looking board has the same connectors, operating logic or supported models.
Electronic parts should be selected after diagnosis. Disconnect power before opening service areas and use qualified service personnel for live electrical testing, gas-system work or sealed-refrigerant repairs.