My magic cheif oven is very old and needs replacing. Funding is low and the oven has gone out. The part 74002387 would fix the problem. Rather than replace with a new part, can I repair the existing one?
Answer Hello Regena. If the gas valve is bad, it will need to be replaced. You can not repair the old part. Test for 3.2-3.6 volts AC at the gas safety valve with the igniter turned on. If the voltage is there, you have a bad safety valve. If the voltage is low, you have a weak igniter and the igniter will need to be replaced. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html
My oven doesn't maintain a constant temperature. It heats up then drops way below temperature before it finally kicks on and heats back up. Makes cooking times alot longer. I am suspecting gas valve, and wondering if there is a way to repair it or if I have to get a new one.
Answer Hello Dale,
This can be caused by the temperature sensor, the control, the ignitor, or the gas valve. I would start by doing a current draw check on the ignitor. With a clamp on amp meter clamped on one of the ignitor wires, start the unit and make sure the ignitor is drawing between 3.2 to 3.6 amps of current. If the amperage draw is low, the issue will be the ignitor breaking down during high heat conditions, If the current draw is safely in range, the next suspect will be the temperature sensor. It should read about 1100O at 70°F.
I was going to send you some illistrated information to aid in your repair. The e-mail delevery failed permanently, which is normally an indication that the e-mail address will not recieve e-mails containing attachments. If you would like this additional information, please re-post with an e-mail address that will recieve the information.
I replaced my igniter stove lights fine but after it's turned off a strong gas smell still comes from the oven. The gas smell is all the time no matter how long its been since the oven was used. Thanks!
You should turn the gas off to the unit and do not use it even for the surface until you replace the gas valve 74002387. Once the part has been replaced, check for gas leaks with a soap and water solution mixed as follows: One teaspoon of liquid soap to a gallon of water and mix well. There is so little pressure in the gas lines, if you mix the soapy water solution too thick, the soap will actually stop a gas leak until it drips off.
oven is shut off,but lights itself anyway,-acts like the oven push switch is sticking in.
Answer Jerry, you're on track. If the thermostat 74002390 shaft is "sticking", that could cause the ignition switch to stick closed and apply 120 VAC to the ignitor 12400035, and could cause the igniter to glow. Thanks
When turning on the oven, 120Vac is sent to the igniter, 2.8Vac (terminal to ground) sent to safety valve (orange wire). The voltage climbs to 3.0 vac. After 5 minutes, the voltage measured again. 3.0Vac at safety valve orange wire, .5Vac at white wire. Voltage drop across safety valve 2.5 vac. Does 3Vac at the safety valve indicate a faulty safety valve and a good igniter? 2nd , how does the safety valve determine when gas should be turned on to the burner? Thank you
Answer Hello Kirk,
The ignitor isn't checked by the voltage, but by the amperage. You see, since heat increases amperage, the hotter the ignitor gets, the more amperage it draws. This amperage is being used by the safety valve coils to build an electromagnetic field, which is what actually opens the gas valve. The amperage required to open the safety valve is ranged by the manufacturers as 3.2 to 3.6 amps. This is why a clamp on ampmeter TJCL1100 is an invaluable diagnostic tool in this type repair job. Note also, when a clamp on ampmeter is used, it is only clamped over one of the two ignitor wires.
If the current draw is below 3.2 amps, the ignitor 74007498 will require replacement. If the current is above 3.2 amps, the safety valve is the component at fault. If you serial number is 10 or below, you will need the safety valve 74002387. If your serial number is 11 or higher, you will need safety valve 74006281. This information is assuming the model number is CGR1420BDW.
Igniter glows cherry red and actually heats the oven to about 130 degrees but oven does not light. Is it the safety valve? No propane smell in oven. Stove top works fine and just changed out tank so it's not low on propane.
Answer Hi Big. The oven ignitor is usually the issue. Part # is 12400035. It may be getting weak and opening/closing the gas valve. It should ohm out to 50- 800 ohms. Test for 3.2-3.6 volts AC at the gas safety valve with the igniter turned on. If the voltage is there, you have a bad safety valve. If the voltage is low, you have a weak igniter and the igniter will need to be replaced. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html. Thank you.
14yr old unit, oven will not flame. Ignitor glows up hot and constant, but no flame. Smell propane after a minute or two. Stove top works fine.
Answer Hello Paul. Based on the information you provided, it sounds like the igniter 12400035 is weak and will need to be replaced. If the gas is releasing, but not lighting, the igniter is not hot enough to lite the gas. Hope this helps.
My igniter turns on and glows, but does not light the gas. The gas sometimes spurts on and off but doesn't stay lit very long. My boiler and stove top both work fine. Please give me some info.
Answer Hi Dan. Your coils might be weak. To Check the coils 279834 and see if they test good. You can test the coils using a multi-meter TJMA-DM1. The two prong coil will read 1,000-1,300 ohms, and the three prong coil will read 1,300-1,400 ohms across prongs 1&2, and 500-600 ohms across prongs 1&3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html. ALSO-, your ignitor can be intermittently working and not keeping the circuit satisfied to let the coils open the gas valve. This part # is 12400035. Thank you.
The oven will not flame up. Top of the range work fine. What could be the problem?
Answer Hello Sam. You will need to check and see if there is 120 volts AC at the igniter. If so, and the igniter does not glow, or the igniter is weak, you will need to replace the igniter 74007498. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps.http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html