Dinosaur N991 Norcold Refrigerator Replacement Control Board

Dinosaur Electronics N991 is a replacement power/control board for specific Norcold absorption-refrigerator controllers. Rather than matching a refrigerator by its family name alone, this board must be configured for the exact original Norcold circuit-board number.

Fitment & Compatibility

Dinosaur specifies the following six replacement-board numbers:

• 618198 and 618224
• 618574 and 618575
• 618828 and 619378

The earlier supplier listing also references Norcold 900, 9100 and early 1200 refrigerator families. Those are broad model references only: confirm the physical board number at the back of the refrigerator before ordering.

Features & Installation Checks

• Manufacturer part: N991; compatible two-way or three-way AC/DC/LP-gas control configurations.
• Required jumper: Program-selection jumper must be positioned for the exact original board number. An incorrect setting may prevent proper operation.
• Connections: Manufacturer-labelled AC heaters, power, gas-valve, fan/DC-heater and door/flapper circuits; verify the installed wiring and equipment.
• Fuse configuration: Single- and dual-heater refrigerators have different AC fuse requirements. Follow the N991 installation instructions.
• Electrical supply: Use stable, filtered 12-volt DC power; high-ripple converter output can damage refrigerator electronics.
• Warranty: Dinosaur Electronics three-year limited manufacturer board warranty, subject to terms.

This listing is for the replacement board, not the refrigerator or a universal retrofit kit. Have qualified RV personnel check the controller setup and LP-gas/electrical safety before installation.