B1809913S Goodman control moduleHSI Board w/9-Pin Connector 

 Electronic control module measures 4.5″ x 5.75″. Includes 3 amp fuse, 4 plastic mounts & 2 wiring harnesses. Board contains 20 wire terminals. Used on GMP & GMPN series units. Also known as part number B18099-13 & B1809913. Replaces B18099-06, B18099-08 & B18099-10.

Diagnostic Flash Codes
1 flash – Lockout due to excessive retries.
2 – Low stage pressure switch stuck closed.
3 – Low stage pressure switch stuck open.
4 – Open high limit.
5 – Flame detected without gas valve.
7 – Low flame signal.
8 – Check igniter or improper ground.
9 – High stage pressure switch stuck open.
Continues flash – Reversed 115VAC polarity or check ignitor.
Off – No power or internal control failure, replace board.
On – Normal operation.