lennox furnace circuit board

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  #1  
Old 09-23-12, 04:06 PM
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lennox furnace circuit board

hi i hav lennox furnace , its blower fan doesn't come ON . i check the blower motor by conneciting it to line its working , but doesn't work through thermostat. I heard a click maybe fan relay but fan doesn't come on .
please help me what i can do ....
 
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  #2  
Old 09-23-12, 04:14 PM
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you can replace the control board? What is the model number of your furnace?
 
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Old 09-23-12, 04:17 PM
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model number 90ugfa3-75-6
 
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Old 09-23-12, 04:30 PM
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is there any other way i can fix the problem
 
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Old 09-23-12, 04:43 PM
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Looks like you need a 83M00

The relay is on the control board which can not/ should not be attempted to be replaced by itself. You will need to replace the control board. Other than that you can do as you did for testing purposes and wire the fan motor hot 24/7.
 
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Old 09-23-12, 04:52 PM
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Thanx for ur help , i ll replace d board ..
 
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