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3 year old Beckett AFG with Clean-Cut system. New inline filter new strainer, new nozzle, flame looks correct in pattern always. Flame does not sputter prior to shut-off. I did notice that when it shut off though the motor kept running for some seconds(maybe 5 seconds)which is unlike when the motor shuts off as in a satisfied call for heat. Burner shuts down. Sometimes will run for 2 or 3 hours all normal and other times will shut down after running 15 minutes. Green led goes to "lockout" mode - 1/2 second on - 1/2 second off. I blew 60psi backward into the fuel supply line to clear a possible restriction. No change. Cleaned the eye, no change. I suspect a bad R7184B that is maybe heating up and failing. Do these units ever have fuel cut solenoids fail? This is ruining several nights already with 35 degree weather. I run down and push the reset button and sometimes I get heat for an hour sometimes for 15 minutes more before all goes quiet. There is a seperate new 50 gallon hot water heater also with a beckett burner which never fails and has never needed a reset so it is not an oil supply problem and have seen them both run together with no failure happening as well. What is it?

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Called Beckett at 1-800-OIL-BURN and explained the problem. They told me that the solenoid on the oil pump (Clean Cut) was the cause. I purchased a new pump for $50 at the local plumbing supply and installed it. Problem solved.

Posted on Nov 23, 2008

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SOURCE: Honeywell Beckett Oil burner locked out.....just

is a single pipe oil line or a double pipe

Posted on Nov 04, 2009

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I have a 5 year old RUDD heater. Burner turns on for 5 seconds then shuts off. Air filter was plugged. Replaced last week and thought prob was solved. Prob is back now. Tried pulling new filter out a...


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It would help if I knew the model of heater because there are 2 different technologies that are used in Reddy Heaters. Having more information could affect my answer.

Generally, if a heater runs with the lid off but shuts down with the lid on, its a sign that either the air pump pressure is not to specs or the nozzle is restricted or worn out. Desa International, the manufacturer, recommends annual replacement of the nozzle, but this is arguable, depending on the age of the heater.

I am pasting a document that I've had around for awhile, that may help:

"A worn nozzle creates a spray pattern, where a good nozzle creates a fog. With a coarse spray pattern poor combustion results in an off color flame, . The photocell doesn’t like the color, sends a signal to the computer which shuts everything down. That’s the job of the electronics. On HSI heaters it is all about correct flame color , not just flame.

The part where you write "If I remove the cover again it runs fine" is a symptom of a bad, worn, or restricted nozzle. Remember- the ignitor only stays red for 5 seconds, then the flame keeps itself lit. The nozzle's pattern is a cone. Lift the lid & the pattern widens (aerodynamics) - replace the lid and the cone narrows & possibly distorts then the flame goes out.

This nozzle rule will only apply if everything is correct as far as fuel delivery applies. The pump pressure must be correct- not almost correct. Set the pressure with a low-pressure gauge that registers12-15 psi max. A gauge with a higher scale just will not read close enough to satisfy the system. If the pressure is not correct, the above rule will not apply. Instructions for setting the pressure can be viewed at http://reddyparts.com/pressure.htm.

In addition, a fan can cause the same problem if damaged or mis-matched to your specific model.

I must mention that any air leaks on the pressure side (or vacuum leaks on the fuel line, for that matter) between the pump and the nozzle will create a rich/lean mixture at the combustion chamber, creating an off-color flame."

Good luck, I hope this helps.

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I have a riello burner for my central heating system. When i turn the heating on the burner ignites for a few swconds and then goes out.... the burner tries to re-ignite and the same happens. I have...


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