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Hello, one minute while I get some information together.
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Replace the controller it is bad.
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I am a different expert.Lets' back up and start fresh. Do the burners ever actually light?
OK , let me ask this .When thermostat calls for heat, inducer comes on , then ignitor.While igniter is on check and see if you get 24v to valve.
What probe.Are you referring to the lame sensor on pilot?
I see so pilot is lighting, just not the burners?
The 1-5 is normal as it will fluxuate.Looks like it will be the board as everything else in circuit has done as it should, board is just not getting signal.It is common for these boards to develop stress cracks.Not very many people attempt trying to trace and repair the solder joints.Best bet is to get number off of board and lets Google it to find best price on a replacement.
I understand. I never like to just throw out an answer telling someone to replace a part, especially an expensive part without doing some troubleshooting and verifying a few things.