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Have you cleaned the cad cell eye?
dont know what you meaning jumping F and F .
On the primary control..the cad cell wires mount to F and F. At start up F and F must read open (dark) but to continue once flame lights F is conected to F by the light picked up in cad cell.
Jumping F to F simulates flame and eliminates the cad cell. Then we can tell if it is primary control or cad cell.
There are only 2 things that fault the control.....no flame to see or the parts that see flame dont recognize it. Many mistake the sound of the burner as actual flame...try jumping F to F BUT make sure there is flame present.
Let me know.
You have to jump it AFTER the flame is present..
have jumper ready..
jump F and F
If F and F is jumped before flame present nothing will turn on.
This bypassed flame and cad cell.
Either the control is wired wrong or not right part or is defective,
The only parts involved in this process are flame, cad cell, primary control.
We eliminated cad cell and flame. The primary control has a issue.
You are right about not much to them so dont overthink the issue.
You can bang your head wondering...but with the bypass we did it has to be contoller or wiring.
Unfortunately I am many miles away.. what control did you install?
Honeywell Tradeline R184G 4009
Protectorerelay Oil Burner Control
is the cad cell a c554a?
the only number on the box is 130367
I just went over everything..the wiring as you saw was pretty simple...and by having flame then jumping the F and F together, if control fails it is bad control.
I apologize I cannot be of more assistance....