Meat probe not working, reads over 400 - Masterbuilt ESQ30B Smoker

perhaps you are expecting too much cold meat temps may be too low for the indicator to read

170 degrees is likely the minimum it can read. put a container of water in the oven, put the probe in the water, and set the oven for 250 degrees. Watch the probe, and see what temperature it shows when the water boils. Depending on your altitude, it should be 212 or a little less.

faulty meat probe, probably a factory defect, if still covered by warranty, return oven for replacement.

You will need to replace the jack for the probe. Here is the part to order.

It is possible that the therrmometer has over shot the limit set on it .It can be spoiled because the hat was in direct contact with the probe and has resulted in the failure of the unit.

Measure the resistance of the meat probe on the K-ohm setting. If it's open, then the probe is bad. I'm not finding a spec on the resistance but it should be something in the K-ohm range.

Next stop is to check the meat probe socket. May be gunked up with condensed grease or whatever. Sometimes a light schmear is all it takes to flake it out. Then check continuity from each leg of the meat probe socket back to the ERC, where the meat probe harness connects.

Error U80: Shorted meat probe

1) Food, moisture, or other substance is in the socket or on the oven connection end of the meat probe. Check: Verify proper operation with new probe (replace probe). If still fails with new probe check wiring of housing to eliminate shorting to sheet metal. Solution: Clean socket and meat probe.

2) Bad meat probe (shorted). Check:Use new meat probe to test for correct values in the service screens. Solution: Replace meat probe.

3) Shorted socket or wiring. Check: Test socket at connector J20 on relay board. Solution: Replace meat probe socket.

Functionality when error U80 reported: Cooking and cleaning are available but meat probe options will not be available.

User action/solution:
1) Verify oven connection end of meat probe is clean and no food, moisture or other substance in is the meat probe socket.
2) Call for service.

I left mine in a hot tub for well over an hour. It started reading room temp at about 125 degrees. It worked for me to put the thermometer in the freezer until the readings were correct. hope this works for you.

I have the same problem. The problem is the probe went bad. I had a friend with another sumbeam digital probe (the mavrick) put that probe into mine and the temperature reading was working properly. So, now I am looking for a replacement probe. but looks like I will have to just buy another digital meat probe.

replace the probe