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Waste Motor Oil / Re: My cb2800 won't start ... thoughts or ideas?
« on: February 16, 2015, 12:57:19 am »
The fluctuation can cause it to shut down. The cad cell (flame sensor) needs to a see a good bright flame or it will tell the primary to shut down. Every time the oil pressure drops it sees dark and if it sees enough dark it locks out. Sucking air is the #1 problem I see with heaters. The smallest amount of air can cause all kinds of problems.
Do not bypass the cad cell unless for test purposes only. If you leave it bypassed and the flame happens to go out the heater will keep running thinking there is still a flame and you will fill the firebox full of oil. I have seen this and it is a ugly mess and a potentially huge fire risk.
Make sure the cad cell is clean then work on the fluctuation issue.
Do not bypass the cad cell unless for test purposes only. If you leave it bypassed and the flame happens to go out the heater will keep running thinking there is still a flame and you will fill the firebox full of oil. I have seen this and it is a ugly mess and a potentially huge fire risk.
Make sure the cad cell is clean then work on the fluctuation issue.