Lennox Alternating Fast Flash Code


Old 10-20-11, 07:01 PM
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Lennox Alternating Fast Flash Code

Need help, turn on heat, combustion air inducer spins, hear relays click, 120V to ignitor for a couple seconds then it turns off; ignitor measures 16.2 ohms.

Doesn't see flame sensor would matter in this case if it never gets flame.

Please help... thanks!

Last edited by hvactechfw; 10-21-11 at 05:22 AM. Reason: Please dont hijack old threads!
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Old 10-21-11, 05:23 AM
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what does the legend on the furnace say alternating fast flash means?

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