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Hello, if the fuel pump runs when you hold the reset down for more than 2 seconds it will flood the inside of the combustion chamber with fuel oil, then when it finally ignites there can be a huge sooty blow back of flame and partially burned oil out of the fire box.
You should inspect the inside bottom of the fire box for that condition before attempting to ignite the burner,
We can go from there depending on what you find.
If the bottom of the fire box is dry we know that problem is no fuel, there can be numerous causes for that from a blocked spray nozzle to air trapped in the oil pump due to an empty fuel tank.
There is no other way to reset it....there is a defect in the burner or the fuel supply to its spray nozzle that must be corrected. Tell me please if the manual you have shows rebuild instructions or not... there can be bad connections from the ignition transformer to the sparking rods or dirty sparking rods, bad CAD cell, or no fuel to the nozzle, those are most common.
Correct, the primary control unit (ignition module part of the burner assy) must be replaced not rebuilt, but the rest of the burner, oil pump, debris in the oil pump, clogged nozzle and etc are commonly repaired... (I am 75 years old with 55 years in the business, 27 staff)
Jumpering wires is begging for a boiler explosion...aside from that there are too many circuits involved to know which one is bad... it is more than likely a fuel pump issue (have you inspected the bottom of the boiler for fuel or can you smell it inside fire box) if not, its a fuel circuit problem, not electrical.
I am still active and work with the latest model boilers on a weekly if not daily basis...You are simply barking up the wrong tree with the reset and hot wiring of the control module is all.
Thanks for trying Just Answer, I will put in a refund request for you,