Kitchen Gas Appliances - Maytag Gas Range
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02-26-01, 11:16 PM
I have a Maytag Gas Range Model #CHG9800AAE. The problem is that the range thermostat does not work properly. The oven temp reaches about 65% of the set temperature; ie if I set the temp at 350 degrees the actual oven temp is approx 225-230 degrees. I used an oven thermometer to determine this. Should I replace the thermostat or is there something else I should do first? All information is appreciated including "how to".
Sharp Advice
02-27-01, 07:32 PM
Hi jmack
Based on your oven temperature findings, the thermostat is defective. However, you will want to be positive it is prior to replacing it. Your time and the item cost has to be considered first.
If you used a liquid filled thermometer and the temp you found is in fact correct, the thermostat will need to be replaced.
FYI: A thermostat that reads more then 50 degress higher or lower then the desired temp setting, cannot be accurately recalibrated. It will never hold any set temp.
The items to check:
The door gaskets and door itself.
The door must fully close.
There must be good gaskets in place for the door to close onto.
Check the complete control panel settings to be sure they are set correctly.
The temp sensing elemnet tube, in the baking compartment, must be in place, not touching anything but the clips and only supported by two retaining clips.
If all the above are correct, replace the thermostat. Some general instructions can be found in the archives of this forum. Select to view as far back as possible and read prior postings on this subject.
Just be aware that a new thermostat isn't too inexpensive, <cheap> it is non refundable and must be handled carefully during installation.
Based on your oven temperature findings, the thermostat is defective. However, you will want to be positive it is prior to replacing it. Your time and the item cost has to be considered first.
If you used a liquid filled thermometer and the temp you found is in fact correct, the thermostat will need to be replaced.
FYI: A thermostat that reads more then 50 degress higher or lower then the desired temp setting, cannot be accurately recalibrated. It will never hold any set temp.
The items to check:
The door gaskets and door itself.
The door must fully close.
There must be good gaskets in place for the door to close onto.
Check the complete control panel settings to be sure they are set correctly.
The temp sensing elemnet tube, in the baking compartment, must be in place, not touching anything but the clips and only supported by two retaining clips.
If all the above are correct, replace the thermostat. Some general instructions can be found in the archives of this forum. Select to view as far back as possible and read prior postings on this subject.
Just be aware that a new thermostat isn't too inexpensive, <cheap> it is non refundable and must be handled carefully during installation.
02-28-01, 03:21 PM
Thanks Tom for the information, however I still have the same problem. I replaced the temp sensor and the results was the same as before. I checked the door gasket and verified that the door closed completely. Both are OK. In your reply you indicated that there is a thermostat as well as a temperature sensor. Is this true? Where is the thermostat? Maytag model #CHG9800AAE; it has an electronic control panel for the oven's operation. All other functions operate normal. No "F" codes are displayed and the functions (bake time, timer, clock, etc.) work fine. Is there any place that I can get a technical manual for this range? Could the igniter and/or gas valve be the cause of this problem? What about the electronic control panel? Any further assistance would be greatly appreciated.
Sharp Advice
02-28-01, 08:55 PM
Hi: jmack
Best advice I can't offer you regarding that specific models service manual, is to contact the local appliance dealer and inquire about purchasing one.
If the dealer doesn't have one in stock, contact Maytag directly.
Regarding the electronic thermostat, most likely the circuit board will need to be tested to determine if a part is defective. The appliance dealer can offer you the best service on that.
If you want to remove the front panel to access parts behind it for testing, just be sure to unplug the unit prior to attempting the job.
Based on the ovens failure to reach the temp. desired but it still is turning on, I highly doubt it is the glow coil.
However, if the solenoid in the gas valve is heating up and dropping out prematurely, it could be the source of the problem. Testing it would need to be done at the dealers store.
Please excuse me if my reply appears vague. In a text only format, it is extremely difficult to diagnose problems on an electronic circuit board that controls a device or in this case temperature.
Regards,
Tom
Best advice I can't offer you regarding that specific models service manual, is to contact the local appliance dealer and inquire about purchasing one.
If the dealer doesn't have one in stock, contact Maytag directly.
Regarding the electronic thermostat, most likely the circuit board will need to be tested to determine if a part is defective. The appliance dealer can offer you the best service on that.
If you want to remove the front panel to access parts behind it for testing, just be sure to unplug the unit prior to attempting the job.
Based on the ovens failure to reach the temp. desired but it still is turning on, I highly doubt it is the glow coil.
However, if the solenoid in the gas valve is heating up and dropping out prematurely, it could be the source of the problem. Testing it would need to be done at the dealers store.
Please excuse me if my reply appears vague. In a text only format, it is extremely difficult to diagnose problems on an electronic circuit board that controls a device or in this case temperature.
Regards,
Tom