Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

A really long shot.....

MikeAmann Member Posts: 998

The sensor (7518) for a Beckett Heat Manager (7812) or Intellidyne HW+ 3250 Fuel Economizer >>> has anyone ever figured out the actual IC chip number used for this sensor? The sensor is getting very hard to find (and for a reasonable price). If I knew what the chip number was, I could probably buy that for less than a buck. Or would anyone have a schematic (not a wiring diagram)?
I have a new spare sensor that I will get the numbers from tonight. The chip looks like this:

SOT-23-5 case I don't know if the chip is ANALOG or DIGITAL. Here are the Texas Instruments choices: