MODEL PROFILE
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MODEL OVERVIEW
About this model: GE JVM1750DMBB
JVM1750DMBB is GE's black 1.7-cu-ft, 1000-W over-range microwave with a 300-CFM outside exhaust and two-position rack. Its manual documents SENSOR ERROR and LOCKED.
Identify this black 2008 Spacemaker
GE's JVM1750DMBB is a black Spacemaker above-range microwave with a 1.70-cubic-foot cavity and 1000 W IEC output. The exact entry specifies a 13.5-inch glass turntable that can be turned off for a dish that needs the extra clearance. The linked 2008 manual covers JVM1750 along with EVM, HVM and LVM1750 families; the DMBB suffix and black appearance therefore come from the exact product page. Before replacing the plate, compare the full model label and the support underneath, not only the broad JVM1750 family. The oven also includes a two-position wire rack, which has narrow operating rules described separately from the ordinary glass turntable.
Interpret the narrower Popcorn sensor range
The manual's Popcorn rule is distinctive: this revision accepts prepared bags of 3.0 to 3.5 ounces. A smaller bag should follow its package and use Time Cook rather than the automatic pad. The rendered page 24 says that opening the door while POPCORN remains displayed brings up SENSOR ERROR. Close the door, press CLEAR/OFF and start the proper program again. Page 42 also connects that message to steam never appearing within the maximum sensor time, for which timed cooking adds heat. Keep vessel exteriors dry and covers vented so humidity comes from the food. GE warns against two consecutive sensor passes on the same hot portion because burning or severe overcooking is possible. The 1 and 9 keys can tune Popcorn time, but they do not remove the bag-weight limit.
Select vegetables, Reheat and Cook appropriately
This exact black model lists sensor Beverage, Popcorn, Potato, Reheat and three vegetable codes, plus a separate Cook convenience control. Reheat targets one previously cooked serving or a plate of leftovers. The Vegetable pad chooses fresh with one press, frozen with two and canned with three; fresh servings need a quarter cup of water. The family guide also describes a six-food Cook menu, but the model listing confirms the control rather than every optional family variation. A covered dish helps the sensor collect steam, while a wide dry plate can lead to a different result. If a large meal or a portion needing stirring is still cool, use measured Time Cook and check the temperature at several spots.
Reserve the rack for timed multi-level food
The supplied rack is useful for timed multi-level reheating, not a permanent cavity fixture. Page 34 says to use it only when heating more than one level, keep it off the oven floor, and remove it for Popcorn, Sensor Cooking and Sensor Reheat. For two-level timed reheating, page 35 starts with one-and-a-half times the usual time and swaps the dishes halfway; it does not claim that the sensor automatically balances two plates. Time Cook II can stage two durations with different power settings, which is more controllable for foods that need a gentler finish. Handle the rack with holders when hot, position it correctly to avoid arcing, and store it outside the cavity when not needed.
Separate hood behavior from panel messages
GE lists a two-speed, 300-CFM hood routed outdoors for JVM1750DMBB. Vent Fan cycles high, low and off; an automatic heat-protection fan may keep running thirty minutes or more after the cooktop and microwave controls are off. That hood response is unrelated to a food-sensor message. The family manual shows one reusable lower grease filter to clean about monthly. Its charcoal instructions apply when a variant recirculates, while this exact unit is listed with outside exhaust. Delay Start and bright/night/off lighting are also on the model page. Finally, LOCKED means a blocked keypad, not failed heating: hold CLEAR/OFF for about three seconds. Read the text before choosing a remedy for fan, lock or steam sensor.
Verified model details
The 2008 JVM1750 guide limits Popcorn to 3.0–3.5-ounce bags, unlike some older GE ovens.
Source for this detail · Source page: 1The rack serves timed multi-level reheating but should stay out of Popcorn and sensor cooking.
Source for this detail · Source page: 42SENSOR ERROR can mean early door opening or no detected steam; LOCKED is a separate keypad state.
Source for this detail · Source page: 25
This description summarizes the linked source documents; check each cited source for your exact model and region.
Manufacturer source
Open official source
GE Spacemaker® Over-the-Range Microwave Oven - JVM1750DMBB - GE Appliances
Open official sourceIf there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.