Furnace electrical connector to Igniter/lockout control


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Old 02-10-13, 12:50 AM
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Furnace electrical connector to Igniter/lockout control

I have a 20+ year old Day & Night furnace model number 394GAW060125. When I call for heat it doesn't always come on, totally dead. I went out and unplugged the connector to the igniter/lockout controller Carrier part LH33WZ512A reinserted the connector and the furnace come on. But if I inserted the connector all the way in it will not work. Sometimes I have to wiggle it to get it to start. Is there a short in the connector plug. I pulled on the wires and they all seem tight or maybe the igniter/lockout controller board has a short. This had been a ongoing intermittent problem. I posted a couple of pictures one is of the plug which is about a 1 inch long and the other is the igniter/lockout controller not real clear.

http://i1205.photobucket.com/albums/...psbcf2111d.jpg

http://i1205.photobucket.com/albums/...psc8a2c743.jpg
 

Last edited by Hiker; 02-10-13 at 12:57 AM. Reason: more information
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Old 02-10-13, 04:00 AM
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I'm not an HVAC expert, but it appears your power lead (red) is missing the female ferrule that plugs into the male part. Wiggling may surely make it come on once the power lead touches its counterpart. The experts will chime in here with a proper way to fix it.
 
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Old 02-10-13, 07:51 AM
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You will likely need to replace the spark module as the fix. it is doubtful that it is the molex connector.
 
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Old 02-10-13, 01:12 PM
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Kevin, even with the missing connector ferrule on the female side? Just curious.
 
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Old 02-10-13, 01:30 PM
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I agree it is most likely the module.

It is common for these connectors not to use every available port.
 
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Old 02-19-13, 02:22 PM
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Replacement of igniter/lockout control board

I replaced the igniter/lockout control board and everything seems to be working fine. Thanks guys for your help.
 
 

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