I'm puzzling over the behavior of a Honeywell R4184D primary control. If the burner is left alone for several hours, on return the primary will be locked out. A press of the button and all is well for another march of hours, and so on. New filter, reset electrodes, recent oil delivery from a good company.
Since I am told that Honeywell no longer manufacturers this part number (R4184D) does that fact suggest that this model has a problem with failure?
Is this a typical failure mode for this uinit?
One company (Ground Heaters) used the R4184D, and lists the replacement part as R8184G. Is there a better choice?
Any thoughts about this? How would you approach this problem?