Our microwave does not consistently come on. When we put in the time to cook it tells us to open/close door. If the cavity light comes on then it works, if not it doesn't work. Please HELP! Thank you

The damper is a door inside that opens or closes depending on cooking mode (open for microwaving, closed for convection cooking). If the controller senses that the door is not in the right position, it will shut down the cook cycle or display an error code.

This is a problem in one of the damper-related components, either the damper switch or damper motor, or the damper door may be binding.

I can provide more specific help if you will let me know your full model number as shown on the tag inside the cooking cavity or around the door area.

- Ed Miller
http://www.microwavecontrol.com

Need a bit more information here. Does it still cook when told to do so? If not, you may have a problem with the door close switch. Perhaps it is as simple as using a screwdriver to finesce the actuator back into position. The inside edge of the door has a metal latch and often times a slightly shorter pin or tab that actuates the door open switch. This not only enables the light in the microwave to turn on when the door is open it also tells the cooking circuits to disable until the door is properly closed. If the switch itself is bad you'll have to take the microwave apart to get it out. RepairClinic.com has a huge assortment of parts that are easy to search and find.

try working the directions backwards start command then open door put mug in then use select then time then start

If and when an oven is coming on or doing anything by itself, this is very dangerous and can result in a fire.

So until it is repaired, please leave it unplugged or leave the door open when it's not in use, and of course one should never leave a microwave unattended while cooking.
Please post a new help request here on FixYa and include the full model number from the tag in the cooking cavity or elsewhere on the microwave, such as the door frame, controller frame, etc. and detailed symptoms and when they occur.

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

HELLO.

Solution to your microwave problem is given as below.

* 1 Set your Daewoo microwave on a countertop near an electrical outlet and plug it in. Open the door and place the circular roller guide in the center of the oven cavity, then place the glass cooking tray over it.

* 2 Set your food on a microwave-safe dish and then put the dish on the cooking tray and close the door. Make sure that it latches properly.

* 3 Turn the upper knob to select a power level. Power levels include "Defrost," "Med-High," or "High." If your Daewoo has a touch pad, touch the "Microwave" button once to set the highest power level. Touch it consecutive times to lower the power level.

* 4 Turn the lower knob to set the cooking time. For cooking times less than two minutes, turn the knob up past the two-minute mark, then back to the correct time. For touch pad models, enter in the cooking time with the numerical keys and then press "Start."

* 5 Open the door at any time to stop the cooking and check the temperature of your food. Shut the door to automatically continue cooking, or turn the timer knob to the right to add more time. For touch pads, press the "Stop/Clear" button, then key in a new cooking time and press "Start."

* 6 Open the door when the timer reaches the "Off" position and take out your food.

Thanks.

We have the same oven, and the light comes on only when the oven is operating. When the door is open, the light is not on. I would be interested in knowing if anyone has done a work-around to make the light come on when the door is open.

From the factory manual here:

SPECIFICATIONS
Rated Power Consumption ..............1700W maximum (Microwave oven+Cook top lamps+Ventilation fan)
Microwave Output ...........1100W (IEC60705)
Frequency ....2,450 MHz ±50 MHz
Power Supply .................120 VAC, 60 Hz
Rated Current ................14.5 Amp. (Microwave oven+Cook top lamps+Ventilation fan)
Magnetron Cooling .........Forced Air Cooling
Rectification .Rectification Voltage Double Half-Wave
Door Sealing ..................Choke System
Safety Devices ...............Magnetron Thermostat: Open at 145 °C ±5 °C
Close at 60 °C ±5 °C .....................Oven Thermostat: Open at 110 °C ±5 °C
Close at 0 °C ±5 °C ......................Fuse(20A)
Magnetron ......................2M282J (Toshiba)
Cook top Lamp ...............130 V, 35 W (Halogen)
Cavity Lamp ...................130 V, 35 W (Halogen)
Timer ..............................Digital,up to 99 min.(in each cooking stage)
Tray ..............Tempered Safety Glass
Overall Dimensions ........2915/16"(W)x167/16"(H)x153/8"(D)
Oven Cavity Size ...........231/2"(W)x10"(H)x141/2"(D)
Effective Capacity of Oven Cavity ....2.0 Cu.ft.
Accessories ..Owner 's Manual &Cooking Guide, Installation Manual,
Exhaust Adapter, Exhaust Damper, Mounting Kit and Filter,
Rotating Ring Assembly, Glass Tray, Metal Rack, Guide Tray.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Check here

http://www.geappliances.com/search/fast/infobase/10000007.htm

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online.

Asta, the cavity light runs through the secondary door switch which is the top one. Sometimes during shipping these switches get knocked loose from there mounting and the oven starts doing some funky things. You can remove the control panel and get a look at these switches, they will be to the left. See if they are all secure in their mounts. Also check the p-4 harness on the board, re-set it. This is where the cavity light relay harness is. If it's new, call for warranty service...high voltage here, be careful....Catriver...post back.