Question about Jandy Laars Lt 400,000 Btu Heater

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Jandy LAARS LT pool heater blows out the fusible link. What could be the cause?

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Check for a heater that is leaking current to the water jacket and this would be a ground and if enough current leaks to ground it will open this link you can check this by undoing the heater,then if its ok then you know its the heater or by checking with an ohmmeter

Posted on Mar 23, 2011

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Posted on Jan 02, 2017

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http://www.parts4heating.com/Pool-Heaters-Teledyne-Laars-LX-LT-s/435.htm

Specifically this is the part for a heater built after 2003
http://www.parts4heating.com/SearchResults.asp?Extensive_Search=Y&Search=R0302000

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