Heater will not stop blowing


  #1  
Old 06-21-09, 04:47 PM
I
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Heater will not stop blowing

Hello. I have a York Diamond 80 gas furnace. When I turn off the heater or ac air still blows through the vents, and I can hear air going out the exhaust vent in the house. Any ideas?
 
  #2  
Old 06-22-09, 06:49 AM
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If I understand you correctly, you're saying that the indoor fan motor is circulating air inside the house AND the combustion air fan is blowing air outside the house thru the combustion exahust?

1. have you replaced the thermostat recently?

2. does the furnace control board have any led lights flashing a code?
 
 

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