MES Internal temp sensor

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fourthwind

Master of the Pit
Original poster
OTBS Member
SMF Premier Member
Mar 12, 2009
1,203
12
Thornton, CO
OK so as most of you know I use my MES a LOT. I noticed on a pastrami smoke yesterday that the gill level temp was 25° higher on the 2nd from the bottom grill than what the MES was set for. In the past it was always within a few degree's of my digital probes. This morning I decided to check things out since I have a smoke on a large t-bone roast today. After pluggin it in, and turning it on, I saw that the MES thought it was at 32°. Ambient air temp was 65°, so I rigged up two digital probes. One at the vent and one at the grill level (sencond from the bottom is where I typically cook) I started with setting the MES temp to 110° and whithin 15 minutes both my digitals said the temp inside was about 200° and the MES said it was at 80°. At this point i am panicking since I wanted to do a cooler smoke today. Well after another 15 minutes the temps on the probes remained at about 205 and the MES said it was at 110. I set the temp one the MES to 150, and let it go another 15 minutes. Now the MES said 150 and probes 225. Long story short I kept playing with this and it looked like the MES probe takes longer to catch up. After an hour and a half I have a 30 degree split between MES and probes. Usable but annoying.

Anyone else see this kind of lagging?

Is this a pre cursor to a total failure?
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Have you tried to reset it by unplugging it?
 
I unplug every time I finish smoking. Cycled it several times this morning as well. I also remove the controller and store it in house when it's not in use. I checked the contacts of the controller as well. no corrosion or wear.
 
Just got off the phone with Masterbuilt. Talked to a very polite lady in customer service that eventhough my unit is well out of warranty (like a year out) is sending me a new controller. Should be here in a week. I cannot stress enough how impressed I am with that kind of service and product support. I use this thing a lot. Typically at least two smokes a week throughout the year. More in the winter than summer, but man call me impressed.

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thumbs up for Masterbuilt service.

One of these day's I'll have to upgrade to the 40 inch when I can afford it.
 
Do you clean your smoker after use? If not, try cleaning the built-in probes on the back wall (my 1,200 watt 40" has two). They may be covered with crud not allowing an accurate temperature reading.

Just a thought.

Phillip.
 
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