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Old 12-20-2012, 03:32 PM   #1
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roof top heater/gas furnace

hello I thank and appreciate the help

my heater just stopped working one day and noticed that the air filter was bad, after replacing it i pushed the reset button ,t but to no luck.. all it makes is a humming noise..

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Old 12-20-2012, 04:16 PM   #2
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roof top heater/gas furnace

Can you be a litlle more specific what heater or furnance are you using ? If it is electric heater, a blocked filter can cause overheating and damage something if the overheat protection switch is not working. A gas furnance may not have the same result with the blocked filter.

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Old 12-21-2012, 07:23 AM   #3
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Location: Pittsburgh, PA
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roof top heater/gas furnace

Does the humming sound seem to be coming from the blower assembly?

If Gas furnace Do the burners light?

If Gas furnace do you have a sprak ignition, hot surface (Glow coil) ignition, or standing pilot?

The people on this forum who can help will need some more information.
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