In this HVAC Training Video, I show How the Oil Burner Works, How the Cadmium Sulfide Flame Detector (CAD Cell) Works, and How the Oil Primary Control (R8184 Protectorelay) Works.

In this video we will discuss common oil primary control behavior, issues, and troubleshooting for a Lanair waste-oil heater. We’ll cover isolating issues to the primary control, thermostat, flame …

Oil Burner Guides Commercial Guides System Control Guides Oil Burner Guides AF/AFG, AFII, NX, SF/SM CF375, CF500/800 1. Burner will not start 2. Burner runs, ignites, then stops 3. …

I'm trying to get a boiler to fire for the heating season and can use some help understanding the primary control, and what to expect. When the system has power, the primary control shows …

Jan 29, 2011 · Troubleshooting the Oil Burner Primary Control Table 5-4 lists possible remedies to a number of different operating problems associated with oil burner primary controls.

Is your oil furnace leaving you in the cold? Understanding the nuances of an oil furnace primary control is crucial for any homeowner. This vital component, sometimes called a 'stack relay', …

Sep 13, 2025 · Replace the primary control if it fails diagnostic tests or displays internal faults. Consider replacing the pump or pressure regulator when pressure is unstable or below spec …

By following these troubleshooting steps and addressing any issues with the oil burner’s primary control wiring, you can ensure that your oil burner functions properly and reliably.

Jun 11, 2025 · To fix the issue, clean or replace the nozzle, check and adjust the electrode position, replace the fuel filter if clogged, and inspect wiring for loose connections. If these …

Included is an explanation of the operation of the Honeywell RA116A, RA117A, and RA817A protectorelays, a primary control that senses heat to confirm that the oil burner is operating …