Dynasty DGRC 60-7GV The burner unit is a "U".the ggas enters one of the unit flows all around to the other end of the "U." By the time the gas is ignited the burning chamber is partially filled with gas and there is an explosion. The igniter should be at the other end of the "U."
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Re: explosion in heating chamber when oven is lit.
The air adjustment is open just a little to much the flame will have a hard time to go to the other side, try closing the vent to the burner just a Little bit and try the oven,another problem that i see is that the ignitor is getting to weak to ignite the flame on time.
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I think you are talking about the oven safety valve or thermal valve. before you change you oven safety valve, I would check the Amperage on the oven ignitor first, install AMP meter on one of the ignitor wire, it should draw above 3AMPs, if not then you have problem with the oven ignitor and not the safety valve. we hardly change the safety valve, I'll try to change the ignitor first. Have fun.
30 inch oven has only one oven tube, 36 inch oven has 2 burners in it, most comment is the oven ignitor is out. If you have 2 burners, I'll change both oven ignitor at the same time, because they worked together. also check the oven tube, if it is corroded at the ignitor area, change the burners. Have fun.
STOP USING THE OVEN IMMEDIATELY!!! You are not getting enough air to the burners to burn all the fuel. Not only will you have an explosion hazard, you'll have a carbon monoxide hazard either of which will KILL YOU. Read all of the info below before you begin.
You need to clean all the burners and inlets thoroughly. You probably used the oven for a lot of broiling of meats or it is quite old. The deposits are clogging the tubes which gauge the amount of air entering the burners or the burner holes themselves. The burner tubes are generally removable by removing one screw and giggling the units clear. Before taking anything apart, note carefully the positions of any mix plates and scribe small marks between the two surfaces. Use a heavy duty cleaner or WD-40 to loosen grime. Don't use abrasives like Comet. Then wash in mild detergent with hot water and dry. Be sure all burner openings are clear. After assembly, note the color of the flames. They should be about 90% blue along their length from the burner head. If they are not, you didn't finish the job cleanly or you have another problem. If the burners are old, rusty or have irregularly shaped flame holes, replace them.
It is usually a bad thermocouple. Mine had only had a weak pilot flame and the problem turned out to be a corroded and leaking pilot gas line. It was leaking whee it enters at the bottom of the oven chamber.