Model: BGU07512A
Serial #: 971241375
COMMUNITY FORUM
Is it possible that the one on the wall is the LS and the elbow the referred to ROS? I'm basing this question on the wiring diagram on the unit that shows 3 ROS switches and 1 LS. It looks like this:
--(LS)--(POS)--(POS)--(POS)--
The wire to (LS) is red and comes off Pin 3 on the 12 pin connector and the one from the last (ROS) is red going to Pin 8 (original board).
--(LS)--(POS)--(POS)--(POS)--
The wire to (LS) is red and comes off Pin 3 on the 12 pin connector and the one from the last (ROS) is red going to Pin 8 (original board).
sounds to me like the brown plate on the cabinet wall you describe is the high limit switch, this as an automatically resetting internal temperature switch. It is sensing the combustion chamber temperature. It must be wired in series with all of the other limit swithces. The switch you mention on the elbow may be a flue exhaust limit switch, senses the flue gas temeprature.
