Hi,
We have a gas magic chef range model number cgr3742adc. The oven does not seem to hold temp. My wife was baking cookies and they were not cooking. Turns out the oven that was set at 375 was actually at 225 ish. When she turned it off and back on it wet to about 375 but later was much higher and she had burned cookies. Where do I start looking? Is there a service manual available for this range?
Thanks!
Martin
[quote=haveissues;315265]Hi,
We have a gas magic chef range model number cgr3742adc. The oven does not seem to hold temp. My wife was baking cookies and they were not cooking. Turns out the oven that was set at 375 was actually at 225 ish. When she turned it off and back on it wet to about 375 but later was much higher and she had burned cookies. Where do I start looking? Is there a service manual available for this range?
Thanks!
Martin[/quote]
Martin,
Did you have any failure codes, in the recent times ?
Did you run a self clean cycle recently ?
Have you observed the glow bar igniter operation ?
You may need a multi meter to test circuits and voltages.
If you had no failure codes, I would suspect the oven temperature sensor or a weak glow bar igniter.
Occasionally after a self clean cycle, the high heat(850 to 950 degrees) causes the resistance of the oven temperature sensor to fluctuate and become out of range,
(sensor resistance at room temperature should be less than 1100 ohms,1084 is average and 1350 to 1450 ohms at 210 degrees, boiling water).
Your glow bar igniter, when glowing, should draw 3.2 to 3.6 amps or produce 3.2 to 3.6 VAC at the bake burner valve terminals.
(if you have a weak igniter, it could produce erratic temperatures)
The most common problem for your complaint is a weak igniter
Good Luck,
Hi Joe,
No, we have not had any failure codes nor have we ran the self clean.
I do have a multi meter so I’ll check the resistance of the temp sensor and the draw of the glow bar ignitor. Can you point me in the right direction on where to find the temp sensor?
Thanks Joe
Marti
[quote=haveissues;316170]Hi Joe,
No, we have not had any failure codes nor have we ran the self clean.
I do have a multi meter so I’ll check the resistance of the temp sensor and the draw of the glow bar ignitor. Can you point me in the right direction on where to find the temp sensor?
Thanks Joe
Marti[/quote]
Martin,
Your oven temp sensor, is the stainless steel rod aproximately 3 inches long attached to the back wall of the oven cavity, with 2 screws(usually on the right side/ upper area).
Remove the 2 screws and slowly/carefully slide the sensor and wires out the opening, until the plastic connector or wire nuts are far enough out to disconnect.
(don’t loose the wires,or you’ll need to dismantle the back of the range).
Your resistance across the wires on the sensor should be less than 1100 ohms at room temperature(avg 1084 ohms).
If you dip the sensor into a container of boiling water the resistance should increase to 1350 to 1400 ohms.
Without any fail codes and with your explanation/description, I’m pretty sure you’ll find your sensor is OK, and you’ll find that the igniter is the weak component.
Let us know what you find.
