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Norcold 628661 2-Way / 3-Way RV Refrigerator Lower Power Control Circuit Board (N611 / N811 / N621 / 1200) Engineering Diagram
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SPECFOUNDRY SKU: SF-RV-103 · BRAND REF: Norcold / Thetford

Norcold 628661 2-Way / 3-Way RV Refrigerator Lower Power Control Circuit Board (N611 / N811 / N621 / 1200)

Stamped Casting / OEM Numbers: 628661 621991001 633299 628661-KIT NOR-628661

Compatible Units: Norcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006)

Critical Dimensions & Spec: 12V DC & 120V AC lower rear power module; single 10-pin + 6-pin edge connectors (replaces obsolete 621991001)

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Pre-Order Dimensional Verification Checklist

OEM Cross-Reference & Stamped Casting Number Table

Use this cross-reference table to confirm that the number stamped or printed on your original hardware or circuit board corresponds to SpecFoundry SKU SF-RV-103:

Stamped / OEM Part Number Manufacturer / System Brand Compatible Models & Years SpecFoundry Replacement SKU
628661Norcold / ThetfordNorcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006)Direct Match (SF-RV-103)
621991001Norcold / ThetfordNorcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006)Direct Match (SF-RV-103)
633299Norcold / ThetfordNorcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006)Direct Match (SF-RV-103)
628661-KITNorcold / ThetfordNorcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006)Direct Match (SF-RV-103)
NOR-628661Norcold / ThetfordNorcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006)Direct Match (SF-RV-103)

Common Failure Symptoms Solved by SF-RV-103

Technicians and property owners typically replace 628661 when experiencing one or more of the following failure modes:

  • Norcold refrigerator brow display completely blank or flashing 'no co' communication error
  • 120V AC element won't heat while LP gas mode works (or vice versa)
  • Burnt relay or blown 5A/3A fuse on lower exterior access compartment board

Step-by-Step Dimensional Verification & Installation Notes

Disconnect 120V shore power and 12V battery supply. Open exterior lower refrigerator vent door, remove black plastic cover over power board, label spade terminals, and swap 628661 board.

Related Technical Guide: Dometic, Norcold, Atwood & Suburban RV Circuit Board & Alde 3010/3020 Cross-Reference Guide →

Frequently Asked Technical Questions (628661)

Where is the casting or OEM part number (628661 / 621991001 / 633299) stamped on this part?

On Norcold / Thetford assemblies, look for the stamped or die-cast numbers (628661, 621991001, 633299, 628661-KIT, NOR-628661) on the underside of the metal housing, along the link arm, on the stainless hinge track, or printed on the circuit board/valve label. Note that casting numbers identify the housing casting, so always confirm critical dimensions (12V DC & 120V AC lower rear power module; single 10-pin + 6-pin edge connectors (replaces obsolete 621991001)) as well.

Does SpecFoundry SKU SF-RV-103 directly replace OEM part 628661 (628661, 621991001, 633299, 628661-KIT, NOR-628661)?

Yes. SF-RV-103 is verified to match the mounting footprint, electrical/mechanical ratings, and dimensional envelope of Norcold / Thetford 628661, 621991001, 633299, 628661-KIT, NOR-628661 used on Norcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006).

What measurements should I verify before ordering SF-RV-103?

Before ordering, verify: (1) Stamped or OEM code matches one of 628661, 621991001, 633299, 628661-KIT, NOR-628661; (2) Dimensional spec matches: 12V DC & 120V AC lower rear power module; single 10-pin + 6-pin edge connectors (replaces obsolete 621991001); and (3) Application matches: Norcold N410, N412, N510, N512, N611, N621, N641, N811, N821, N841, 1200, 1210 Series (Serial > 9056491, Post-2006).

How fast does SF-RV-103 ship and what payment methods are accepted?

SF-RV-103 ships within 1–2 business days from our US warehouse network. Flat-rate US Ground shipping is $8.95, or FREE on orders of $150+. You can check out online immediately via PayPal, Venmo, Credit/Debit Card, or request an Instant Card Payment Link / Net-30 Commercial PO Invoice.

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