Circuit Boards for Janitrol PGB Models
Goodman & Janitrol PGB model gas-electric package units were built with three different circuit boards. The way to determine which circuit board is correct for your application is with the first four numbers of your unit’s serial number.
— Units with serial number that start with 9504 thru 9606 (April 1995-June 1996) use circuit board number B1809911S
— Units with serial number that start with 9607 and higher (July 1996-present) use circuit board number PCBAG123S