Technical Overview
Overview & Function
The Norcold 628661 is the power circuit board at the heart of compatible Norcold RV refrigerators. It manages AC and LP operating modes, temperature regulation, and fault detection from one factory-calibrated board. Failure symptoms range from a completely dark fridge to mode-specific faults and repeated lockouts. Replacing it with the same-number 628661 restores the complete factory control stack.
Fitment & Compatibility
This board fits Norcold models documenting 628661 as the power board. Verify against the wiring diagram or the tag on the existing board. It mounts in the factory control location and accepts the original harness connectors without modification.
Technical Construction & Specifications
The board carries the Norcold power and logic layout with OEM-spec relays, regulation, and protection circuitry matched to the original. Terminal positions mirror the factory board so each harness plug has exactly one home. Boards are inspected for solder quality, straight pins, and clean edge connectors before dispatch.
Installation & Maintenance Guidelines
Disconnect shore power, battery feed, and LP supply first. Document all connections with photos, swap the board onto its mounts, and reseat every plug firmly. Restore power in the sequence the manual specifies and confirm operation on both AC and LP through complete cooling cycles.