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Oil furnace master control

Firehack
Firehack Member Posts: 1
in Oil Heating
I am looking for a replacement for a GE CR7865A101A2 Master Control for my 55 year old oil furnace. Do these exist or are there replacements that will work?

Comments

  • Ironman
    Ironman Member Posts: 7,514
    Are You referring to the primary control or a stack switch?

    How about posting some pics?
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    You could take a chance and buy one on ebay, but they aren't made anymore. You can also switch out the burner for something modern, or just convert it to primary/ignitor, etc.
    But in reality, a 55 year old furnace doesn't owe you anything.
    It's probably 45-50% overall system efficiency, and a modern furnace would probably give you some nice payback.

    There was an error rendering this rich post.

  • MikeAmann
    MikeAmann Member Posts: 1,044
    Yes, there is one on ebay https://www.ebay.com/itm/112104617123 but I would avoid going down this rabbit hole. Post some pics of your boiler and control.
  • Steamhead
    Steamhead Member Posts: 17,330
    If this uses a standard cad-cell flame detector, which I cannot tell from the ebay listing, a modern primary control would probably work.

    IIRC, "Master Control" was GE-speak for primary control, and all their Master Control model numbers started with CR7865.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting

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