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Re: Cad flame sensor
Go to Mr.heater.com and get a CAD flame sensor for any heater with the same btu output. They are all basically the same. The wires will be a different color so just splice them to you old wire harness, there is no wrong way to connect them. I just did the same thing with my dyna glo and it works perfectly. Most heater parts ar interchangeable they just have different wireing.
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A cad cell is a photo-electric device that reads the UV rays given off by flame after it has ignited. If it does not 'see' the flame, due to a flame failure OR a cad cell failure, the control circuit is locked out.
Make sure there is no carbon on the front (window)of the cell and make sure its adjustment is in perfect alignment to the flame.
A cad cell is normally related to an oil furnace and the cad cell is there to make sure that there is a flame. The cad cell is in a close proximity to the flame and can become covered in soot. Try cleaning it if this is unsuccessfull then you may have to replace it. Being close to the flame they do burn out. Dennis
1) Check wiring to Cad Cell (per wiring schematic in manual).
2) Clean Cad Cell photo cell.
a) Slide Cad Cell out of Cad Cell holder.
b) Push the photo cell out of the white rubber Cad Cell housing by
pushing on the blue and white wires.
c) Clean the photo cell with a soft cloth and rubbing alcohol.
d) Pull the photo cell back into the Cad Cell housing and reinstall into
e) Test heater.
3) If the heater still does not operate, replace Cad Cell.
4) Replace oil flame control assembly.
If you go to mrheater.com and click on the forced air kerosene heater parts tab you need part #26865 cad cell/flame sensor, it's $2.23 the wires will be a different color and also the plug ends so just clip the wires of the old and new one and splice it to the old wires, there is no wrong way to hook them up, no hot or ground it just completes a circuit. Most parts from this company will work with any heater of comparible btu's. you can also call 800-251-0001 Hope this does it for you. I checked reddy heater and the same part lists for $18.08