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Thanks,
Where would I find the furnace disconnect switch or are you referring to the main power to the furnace. The furnace is on and running just fine, ergo the circuit breaker is fine too.
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Hi all,
Noobie here - so please forgive basic ?'s.

My Lennox Air conditioner will not turn on. When I switch the thermostat to cool and fan to on nothing happens. Can anyone suggest how to begin...