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True blue 90 tech 4 furnace shows primary limit circuit open on diagnostic led
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https://www.askmehelpdesk.com/showthread.php?t=829444
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Dec 20, 2016, 08:07 AM
putz88
True blue 90 tech 4 furnace shows primary limit circuit open on diagnostic led
Burners light and blower fan doesn't kick on. Unit shuts down after 30 60 seconds
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