Honeywell ST9120A 2004 Furnace Control Board Lennox Armstrong 40403-001 🔥Tested

Description

Honeywell Furnace Control Circuit Board
OEM in Armstrong, Lennox, and possibly Ducane and Concord (also made by Lennox)
Part numbers
ST9120A2004
ST9120A 2004
40403-001
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Condition:
Used part, removed from a working furnace - checked thoroughly before removal, no issues.
Please see photos. The part in the photos is the part you will receive.
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Shipping:
Shipped promptly after payment via USPS Priority Mail with tracking and insurance. If you pay before midnight eastern time, it will ship in the morning.
I do not make a profit on shipping. Shipping cost equals the cost of postage .55 for priority Mail with tracking and insurance, plus Ebay is 12.6% surcharge .05 for a total of .60 which is my shipping charge
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Please check part numbers and review photos to be sure this is the correct part for your furnace.
Buyers are responsible for purchasing the correct part for their application and for correctly diagnosing their need for this part.
If you are experienced and competent in servicing and diagnosing Furnaces and their issues and you know this is the part you need - it is an excellent value.
But if you’re fixing your own furnace, and an experienced HVAC tech has not diagnosed your need for this part, please understand you are buying this part at your risk not mine.
While I guarantee this part has been checked thoroughly and is in excellent used condition....I cannot guarantee it will fix your furnace. If it does not fix your furnace - this does not mean the part is defective. It was checked in a working furnace. It does mean you either bought the wrong part, you installed it incorrectly, or your furnace has another issue.
If you have any questions or issues, please feel free to write. I will do my best to help you