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Lennox Elite Furnace keeps shutting off

Klabiuk

Premium Member
Joined
Oct 17, 2015
Messages
26
Location
Winnipeg
Model Number
C33-18a-2-6
Brand
-major brand-
Age
6-10 years
Model c33-18a-2-6
We noticed today that our furnace will just shut off. We noticed our thermostat dropping and it wasn't firing back on so it was getting colder (we're in Manitoba). My husband opened it up and cycled the safety switch, and it fired back up...but then at some point would shut off again. This happened three times today. My husband blew out one of the tubes (following what he saw a repair man do before) and it works again. We'll see how long it lasts for. Does this sound familiar?

(Funny....we had an old school furnace for 20 years that was not energy efficient but never once had a problem. We replace it with this high efficiency furnace and have an issue every year.)
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
107,969
Location
McMullen Valley, Arizona
When did you have this unit installed? This year? Last year?

Jake
 
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