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136 Posts
Happy new year everyone!
I have a really old Lennox furnace which was running great but tonight I heard a popping noise, like something electrical blowing type of noise from the furnace. Now the furnace blower won't turn on. I can hear the furnace light and flame burning but the blower won't run. I can hear a click and then humming every few minutes which sounds like electrical current passing through to a switch or relay trying to start the blower motor. Sound seems to be emanating from the motor area. It hums for several seconds then stops and just keeps cycling like that every several minutes. i just shut the furnace off for now at the emergency shut off switch. Is the motor shot? I don't think it has a capacitor since its a very old furnace but I will check tomorrow since its like 5am pacific time here in Vancouver, Canada.
I have a really old Lennox furnace which was running great but tonight I heard a popping noise, like something electrical blowing type of noise from the furnace. Now the furnace blower won't turn on. I can hear the furnace light and flame burning but the blower won't run. I can hear a click and then humming every few minutes which sounds like electrical current passing through to a switch or relay trying to start the blower motor. Sound seems to be emanating from the motor area. It hums for several seconds then stops and just keeps cycling like that every several minutes. i just shut the furnace off for now at the emergency shut off switch. Is the motor shot? I don't think it has a capacitor since its a very old furnace but I will check tomorrow since its like 5am pacific time here in Vancouver, Canada.