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Do you have a meter to verify we are getting 24v to gas valve?
That is going to be first step in troubleshooting if igniter is lighting
Let me know when you get it if we get 24v to gas valve when igniter heats up.
Sorry I did not see your reply.When it went to 25.5 did you hear valve click and did any gas come out to burners?
Do you want to continue this Monday?