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Oil burner/waste oil heater not firing

Reset was stuck in so I replaced that switch. still not working. has power on black. white is good.thermostat has power. cad is good. no power to orange. don't know what else to check.

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Re: oil burner/waste oil heater not firing

Don't know what model Reznor Waste Oil heater you have but I happen to own a Reznor RA235. 235,000 BTU. If there is no oil being pumped up I would first check to see that the filter isn't clogged where the oil sucks up from the tank. There should be a gauge on yours with different color codes as to when the filter must be changed or cleaned. I already had to replace the pump on my Reznor RA235 as the pump went bad a couple of years ago. You can tell if it is pumping or not. There is also a filter built right outside of the pump on mine and one up on top of the unit that need to be cleaned at times. The manual shows all of this.

Posted on Dec 27, 2008

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Re: oil burner/waste oil heater not firing

We have a Reznor oil fired heater that fires but will not induce oil any ideas ?

Posted on Dec 16, 2008

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Re: oil burner/waste oil heater not firing

First check the oil heater element. the oil has to be heated to atomize it. check the air flow mix to the nozzle. if too much it won't atomize the oil, too little you'll get a stream out of it. change out the honeywell burner control

Posted on Jan 05, 2008

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I have an oil fired aga the oil will not come throw to the burner

see the following steps:
f the burner doesn't run, set the thermostat a few degrees higher than normal to see if it comes on. If it still doesn't come on, check switches, and breakers and fuses (see the Electrical Service Panel Fix-It Guide). If the unit has a reset button, press it. Also oil the motor at any oil ports (see below). If the unit doesn't want to start and run, first check the c to make sure that the ignition is getting power. If there is power, check the built-in safety controls (see below) that may turn the system off if they perceive problems.
If the burner cycles too often, replace the filter (see below). Also, oil and adjust the blower (see the Forced-Air Distribution Fix-It Guide).
If the burner runs but won't fire, make sure the oil valves are open and that there's oil in the tank. Check the tank level with a clean stick.
If the burner smokes or squeals, shut off the unit, let it cool, and fill the oil cups. Recheck them after the motor has run for an hour.
If the chimney smokes even after the flue has warmed up, the unit is wasting fuel; call for professional repair.
Safety Controls
Oil furnaces and other heat systems include safety devices that monitor operation and turn off the unit if something goes wrong. In some cases, the safety device can be the problem.
If you encounter an operating problem with an oil furnace, first reset the safety and try again.
If the burner kicks off again, shut off all power at the electrical service panel ; the burner motor and ignition may be protected by separate fuses or breakers.
If the sensor has a photocell, wipe it with a clean rag or tissue and see if the furnace starts.
If the safety is a stack switch mounted on the flue, remove the screw holding the unit to the stack, slide it out, and wipe off the sensor.
If the furnace won't start after three tries, seek professional assistance. Unburned oil can accumulate in the combustion chamber and "flash back."


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I wire a 240 heater using 12/2 wire making both the black and white hot at the breaker to a thermostat using the wire diagram on the website as the guide. I have power to the switch and when I turn on the...

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Check that you have 240 VAC to the thermostat, and that the breakers are fully set.

If you have 240 VAC to the stat, check that 240 VAC is being powered to the heater.

Let me know what you find. (I am assuming the heat strips are good.).

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The Black Wires from the md26 are your load(the heater) and the red lines are your line(power). The lines are also paired up on the thermostat with a red and black on the left and are red and black on the right. In the actual heater connect the black to the black wire and the white to the white and connect the grounds. In the thermostat connect the black from the heater to left side black( remember there are pairs left(black, red) right (black, red) and the white to the right side black connect the black from your power to the left side red and the white from your power to the right side red. Should be ready to go.

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