Brent Mason
New Member
NEW MAN HERE , I have a Rheem Mod 3402-110 furnace , it was totally rebuilt . When I installed it I broke the limit switch . Pretty sure it's a White Rodgers 5A75-10 , The outer cover was rusted and I can't get the # of it . I installed a Rockwell limit switch and it works but have tried different settings and it does not cycle right .I think the insertion probe is too short and not reading heat correctly . Is there a way to search my Rheem # to see if this is what limit switch they used (parts diagram)? I think I can find a new/used white rodgers but I am not sure where the probes are located . I see that the probe that is broke off just unscrews so maybe I can find one of those . If I could find a manual/parts diagram for the furnace that should help locate the probe/heat sensors . Thanks
