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MODEL OVERVIEW
About this model: GE JVM1490SK
GE JVM1490SK blends 900-watt microwave, sensor cooking and convection baking; this guide explains CAUTION—OVEN HOT and CONTROL LOCKED without mislabeling normal status as a failure.
Recognize the three cooking systems
The stainless GE Profile JVM1490SK is an over-range Spacemaker with a 1.4-cubic-foot cavity, 900-watt microwave output and a 12.75-inch turntable. Its exact product listing distinguishes three methods: Microwave, Bake and Fastbake, supported by a convection rack and broil pan. It also lists external venting. The manufacturer-linked 72-page owner PDF names JVM1490 on its cover and shows a turn-and-push dial alongside separate Bake and Fast Bake keys. This is important when tracing a complaint: microwave time cooking, circulated hot-air baking and combined Fast Bake do not behave identically. Bake uses moving heated air and a low-position rack, while Fast Bake adds microwave energy for faster browning. Before following instructions for another Profile microwave, verify the SK suffix and the physical dial; a simple microwave-only panel would not explain the temperature and sensor interactions described here.
Why a hot oven refuses a sensor key
A prominent JVM1490SK display warning is CAUTION—OVEN HOT. The troubleshooting table states that it appears when the cavity is over 200°F and calls that condition normal. A sensor-cooking key pressed at this temperature will not run until the cavity cools. That distinction is especially useful after Bake or Fast Bake: the linked guide says those modes can set oven temperatures between 225°F and 450°F, far above the sensor threshold. The heating element and hot-air flow used by Bake are different from a sensor Reheat cycle that watches steam. Let the oven cool before attempting the sensor pad rather than interpreting the warning as a failed humidity sensor. For Fast Bake, use the guide's low rack position and cookware instructions; it specifically rules out metal cookware in the combined mode. A paused sensor function while the cavity is still hot is a protective status, not a decoded component error.
Interpret the panel lock and language settings
GE lists Child Lock for JVM1490SK, and the manual specifies the display text CONTROL LOCKED. It appears briefly if someone presses a button or dial while Child Lock-Out is engaged. Hold CLEAR/OFF for about three seconds to release the panel, then try the intended selection again. This is separate from CAUTION—OVEN HOT: unlocking will not cool an oven, and cooling will not release the deliberate lock. The dial-based OPTIONS menu also allows the scrolling display to use English or Spanish, and its clock display may be switched off. Thus a blank idle clock, a momentary lock word and a hot-cavity message are different observations. If a control remains unresponsive, write down the exact words and prior Bake activity before following the p30 power, door and start-key checks. A family table's normal status lines should not become a fabricated repair diagnosis.
Protect sensor Popcorn and Reheat cycles
The exact JVM1490SK listing confirms sensor Popcorn, Reheat and Cook controls. The owner guide explains that sensor programs need rising steam and often display remaining time only after steam has been detected. For Auto Cook it asks for a selected food type; for Reheat it distinguishes a leftovers plate from smaller or larger cups. The manual warns against opening the door before the countdown, since escaping steam alters the measurement. In Popcorn, opening while POPCORN is displayed produces an error message; the guide does not spell out its exact characters. It tells the owner to close the door, press CLEAR/OFF and begin again. Use Time Cook for any remaining heating instead of repeating the same sensor cycle on one portion, which the manual warns can burn food. That advice is more specific and safer than inventing an alphanumeric Popcorn code that the source never prints.
Verified model details
A cavity above 200°F temporarily blocks sensor pads after high-heat use.
Source for this detail · Source page: 1CONTROL LOCKED is the child lock, released by CLEAR/OFF held three seconds.
Source for this detail · Source page: 30An early Popcorn door opening triggers an error message whose exact wording the guide does not print.
Source for this detail · Source page: 22
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GE Profile Spacemaker® Convection/Microwave Oven - JVM1490SK - GE Appliances
Open official sourceIf there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.