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Antique Rheem Questions
bemason
Member Posts: 1
in Gas Heating
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 on the rockwell ![](https://us.v-cdn.net/5021738/uploads/editor/f4/4ozjlytmrde9.jpg)
![](https://us.v-cdn.net/5021738/uploads/editor/vz/twzz3oyyanby.jpg)
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 . A Rheem manual/diagram should help me locate the 2 heat sensor probes . Also the one probe is broke but it unscrews so maybe I can find new/used one ? Thanks
![](https://us.v-cdn.net/5021738/uploads/editor/f4/4ozjlytmrde9.jpg)
![](https://us.v-cdn.net/5021738/uploads/editor/vz/twzz3oyyanby.jpg)
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 . A Rheem manual/diagram should help me locate the 2 heat sensor probes . Also the one probe is broke but it unscrews so maybe I can find new/used one ? Thanks
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