Commercial Dryer DSI Igniter Control Board 110/120V (GEM-1) for American Dryer Corporation (ADC). Replacement for P/N: GEM-1, RAM-1, CDS-1, EPIS-117V Made in U S.

OR / ALSO

Brand New Old Stock unit-less the wiring. High tension lead also not included. 120-06427, 550-07324

Fits propane model heaters; 304C, 304D, CP380, CP400A, Trademan 400, and other L. B. White; Direct Spark Ignition Control Circuit board,DSI, part numbers; 1303, 550-07324, 120-06427   5 PIN--------------see last image for more detailed data for this OEM Replacement part I  put together. Use magnifier to read data sheet please.

also used on 286A & 286B, 290A & 290B,    292E, 296E & 298E  L. B. White Model Heaters made in the U S.

If you look at the last circuit board picture, you’ll see what a USED one looks like inside. Mine is new and I’m not going to take it apart. Third picture is what my 1984 304C 380,000 BTU heater looks like for reference only.

My unit is the only new one on eBay currently as pictured, I checked current and completed listings under many different keyword title searches and didn’t find one. These are likely to be NLA/out of stock/back-ordered with no real delivery date available. 

Note that if you’ve never fired one of these large propane heaters without following the manufacturer’s directions, you won’t get it to light….it happened to me and I’m a service guy since 82, although it was all mostly kerosene related.


All servicing of electrical components should be done by a qualified service technician or Electrician.

“All information is considered my intellectual Property and may not be reused in any form.”

No returns, credits, exchanges or refunds, this is especially true on all electrical parts and has been an industry standard for many many decades.

If you’re going to “watch” and hope I send an offered-discount, you’ll probably be waiting till it sells to someone else at listed price.

Best be certain this is your problem, cause I'll fight to the death on any requested returns, this ain’t Wal Mart!   As per the manufacturer’s instructions, this should only be installed by a qualified service technician or electrician.

Also used for commercial clothes Dryer Control Ignition-IEI Board RAM-1, 120 Volt P/N: M406789

Other uses: Description: Dryer Control Ignition-IEI Board RAM-1, 120V 60Hz 5PIN Lip Out, for Alliance, Speed Queen, Huebsch, Unimac.

Replacement for P/N: M406789P, 406789P, 406789, M411282, 411282.

Go to desatech dot com for DESA heaters and a few Scheu and L B White heater parts lists and owners manuals under the construction heaters drop down box at the top left. Also consider going to L B White;s website for parts breakdown of your heater.

RAM-1, 1303, M406789, 790-100, SCHEU 6643 and 6960, and certain DESA LPG/propane heaters needing a 097807-01 DSI controller.



TERMS;   8% sales tax is now being charged in my region for sales coming out of NYS.

That is on the total amount including shipping costs. Ships to U S only.

shipping now will require a couple working days to get your stuff sent out. Same for responding to emails.

WINNING BIDDER PAYS ALL SHIPPING COSTS. IF THERE IS ANY PROBLEM WITH ANY AUCTION ITEM, PLEASE CONTACT ME FIRST AND I WILL OFFER A POSSIBLE SOLUTION. I PACK WELL SO BE NOT AFRAID OF RECEIVING A DAMAGED PACKAGE.

NO RETURNS, REFUNDS OR EXCHANGES ARE ALLOWED. ALL ITEMS ARE SOLD AS IS.

 I am not a business; therefore, I do not charge ANY SALES TAX, regardless of where you live; however, eBay is collecting sales tax here for NYS at check out, I have no control over this despite my repeated e-signing of eBay petitions to Albany and Washington, D.C.

  I generally leave positive feedback once you’ve posted feedback after receiving an item or items, currently most are not leaving feedback and that’s a problem for my eBay rating and is the reason for this process.

Please remit payment within 24 hours of auctions ending, unless a buy it now option is used requiring immediate payment. Thank you.

SHIPPING AMOUNT REFLECTS ACTUAL COST PLUS EXPENSES; IF SHIPPING AMOUNT IS A PROBLEM, I ENCOURAGE YOU NOT TO BID.

ITEMS SENT BY U S MAIL, AND BY UPS, WHICH EVER IS CHEAPER, No APO, AFB, FPO shipping, (No P O boxes for UPS please).

I will NO LONGER change any addresses for shipping. The buyer is fully responsible for making sure their address is correct (as well as all contact information) in PayPal and eBay and I will ship to the address that prints from they’re PayPal account.

FED EX and DHL not available! (UPS is more expensive to ship here than other places, (no UPS terminal for at least 45 minutes’ drive in any direction).

 I accept various U.S forms of Payment, by bidding on my auction; you have accepted and understand my terms of sale!

 Alaska/Hawaii shipping costs may vary.