A O Smith Thermocoupler Replacement - HVAC - DIY Chatroom Home Improvement Forum

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Old 10-29-2010, 05:32 PM   #1
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a o smith thermocoupler replacement

I;m replacing the thermocoupler on my pro max water heater. However, the honeywell universal replacement doesn't match the existing one. the smith tc is actually two pieces, with what seems to be a sort of fuse between them. The replacement is a single copper line.
Can I just bypass this fuse contraption or do I need to buy an actual smith replacement. I saw something that ao smith knew there were problems with their tc
Thanks for a prompt reply. we need to take showers here!!



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Old 10-29-2010, 05:43 PM   #2
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Sometimes they make them with backwards or left hand threads and so that only theirs will fit. May have a fusible link which is required by UL and AGA codes so if you bypass it then you could be liable.


"Cut it twice and it is still too short".
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Old 10-29-2010, 10:07 PM   #3
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If that's the newer type wh with piezo ignitor. regular thermocouple won't work
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