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Beckett Oil Burner Repair - How to Replace the Ignition Transformer

Your oil burner will not light up and by checking the transformer you find out that it is not making the spark needed to light the burner. Changing this part on is not difficult. I will give you a few pointers on how this can be done easily.



To check your ignition transformer quickly, just loosen the screws that hold it down and flip the little tabs back. After pushing the reset button wait for the motor to start. Once the motor starts, pull up on the transformer a bit and listen for the spark to jump to the electrodes. This spark is normally very hot and will jump a gap of at least ¼”. If you have a lazy yellow/orange spark instead of a bright blue/white hot spark or if there is no spark at all then you need to replace the transformer.

To change the transformer turn off the power to the burner, and flip the transformer all the way open. There are two screws that hold the hinge at the back of the transformer. Remove the protectorelay from the junction box and unhook the wires going to the transformer. Remember where these wires go so that you can reconnect them to the same spot.

Fasten the new transformer in place using the two screws and connect the wires to the proper places. Turn the power back on and try to fire the burner. The reset button on the protectorelay may need to be pushed again. If the burner does not light then you may have other problems also. You will need to continue to troubleshoot the problem or call professional help.

It is not uncommon for oil burner problems to come in bunches and for more than one part to fail at once. Do not be discouraged if there are multiple problems. This is very normal with oil burners. Have patience and methodically check each component and replace as necessary.

Oil burner repair can be very challenging but there are many things that you can do if you have some mechanical knowledge. Have fun and good luck!

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1 Answer

Columbia oil burner w/ Beckett/Honeywell primary ignitor, motor, transformer, etc. I must push the interm. ign. oil primary to fire up the oil burner & the fire goes out after approx. 45 sec. Ho


It sounds as though the control may not be the problem. Is the burner actually firing ? Are you getting a good strong flame?. If so the cad cell may be the problem . Make sure the wiring to the cad cell is correct and there is nothing blocking the cell from the flame.
Try a different cad cell to see if that solves the problem. If you are not getting flame check the transformer. If that is okay check the gap of the electrodes. Hope this helps

Jan 11, 2014 | Dryers

1 Answer

oil boiler wont fire up


Make sure the electrodes are set properly for your burner. Make sure you are getting oil to the burner by opening up the bleeder on the pump after you press the safety switch to start the furnace. Take the screw out of the transformer and lift it up then hold a screwdriver on 1 of the springs and bring the tip of the screwdriver about 1 half inche from the other contack spring to see if the transformer will spark.

Mar 24, 2011 | Heating & Cooling

1 Answer

Engine runs fine, pump works, but it's not kicking the burner on ?


The first thing I would check is spark on the electrodes in the burner, if you pull the transformer down from the bottom of the burner you will see two springs that touch metal poles in the bottom. You are going to have to have someone else run the machine in cold water mode (these machines will create spark in cold or hot water mode) and holding onto a long insulated screwdriver you are going to get about 1/4 inch away from each of the springs and see if a spark comes across the spring and the screw driver. Be very careful in doing this, you are playing with a lot of power. If no spark then this would indicate that you have a fuse blown or the transformer is bad. You would then proceed in checking power to the transformer. If you are getting spark then it is going to be one of the safety systems that is giving you a problem. Let me know what you find out.

Oct 27, 2010 | Northstar Wet Steam & Hot Water Pressure...

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