Dramatic Temp Changes

Old Man Grills

Active member
Joined
Jul 27, 2020
Messages
70
Reaction score
123
Points
33
Location
UK
Grill
SmokeFire EX6
Hi folks,
Hope you are all well and covid free.
Last couple of cooks my SF has been set to 350 but the temperature is jumping all over the place. Today the app was telling me it was 420 and rising before dropping back to 190.
Going out to the unit and it certainly feels hotter or cooler when I open it up but its like the temp gauges are all completely out of whack.

It is around 40 degrees here but not windy or raining - just wondering if this might have anything to do with it.

Anybody else experienced something similar?

Thanks

ps. it has had a new controller and power board already.
 

Tyler6590

Member
Joined
Jan 4, 2021
Messages
34
Reaction score
56
Points
18
Location
Laguna Niguel, CA
Grill
SmokeFire EX4
I've seen fluctuations of 25 degrees and often it say a temp and be off (usually lower by 25). Did you check/clean the fire pot? I had issues getting a temp once and I got a flame out because I didn't clean the fire pot before a cook only the cool chamber. The system maybe over compensated when trying to hit 350, then got buried in ash and dropped to 190.
 
OP
O

Old Man Grills

Active member
Joined
Jul 27, 2020
Messages
70
Reaction score
123
Points
33
Location
UK
Grill
SmokeFire EX6
Thanks. I didn't check the fire pot this time. Maybe that was it.
Shouldn't have been that dirty though I cooked a single chicken last time and it was spotless before that.
 

AHoneyman

Well-known member
Joined
Apr 14, 2020
Messages
442
Reaction score
614
Points
93
Location
Dallas
You are seeing what many of us have been describing for months. We have postulated just about everything. The consensus is that the PID needs a little adjustment. Yet others have never had a problem.
 
OP
O

Old Man Grills

Active member
Joined
Jul 27, 2020
Messages
70
Reaction score
123
Points
33
Location
UK
Grill
SmokeFire EX6
You are seeing what many of us have been describing for months. We have postulated just about everything. The consensus is that the PID needs a little adjustment. Yet others have never had a problem.
Sorry what’s a PID?
 

bbqking

Well-known member
2x SOTM Winner
Joined
Mar 2, 2020
Messages
711
Reaction score
1,133
Points
93
Location
Phoenix,Az
Grill
EX6, 2, 22” kettles, and a e310 gasser
I’ve had mine almost a year with no issues. Until a month ago. I keep mine pretty clean. Shop vac every 3-4 cooks. I ended up replacing my glow plug. I’ve had several fluctuations. My last cook was chicken, I set it at 375. It got there. Let it settle there for a bit. Put the chicken on, 10 minutes later it just dropped to 190. I left it alone it climbed back up to 375. I let it go another 45. Opened to baste chicken, it dropped to like 85, again I left it alone, it did give temp drop warning. I just tapped ok. It climbed back to 375. Another 15 and chicken was done. I then shut it down. So it’s been acting weird recently,
 
OP
O

Old Man Grills

Active member
Joined
Jul 27, 2020
Messages
70
Reaction score
123
Points
33
Location
UK
Grill
SmokeFire EX6
That sounds very familiar to my experience. I could understand a bit of a drop when opening the door but its these random drops when nothing changes. It's still cooking but it's not great for something that is only 6 months old in my case.
 

Goneincognito

Active member
Joined
Oct 17, 2020
Messages
97
Reaction score
152
Points
33
Location
Australia
Grill
SmokeFire EX4, WSM 14.5", 22" kettle
I wonder if the temp sensor at the back spits the dummy if its dirty and causes issues?
 

Goneincognito

Active member
Joined
Oct 17, 2020
Messages
97
Reaction score
152
Points
33
Location
Australia
Grill
SmokeFire EX4, WSM 14.5", 22" kettle
I am sorry but I need a translation. I can "knock with my elbows" but "spits the dummy" lost me. 🤔
Doesn't like it.

1611534640639.png
 

MrPhilGrillTX

Member
Joined
Jan 10, 2021
Messages
33
Reaction score
42
Points
18
Location
TX
Grill
EX6 (+ a kettle from 2003)
Are you looking at the built in sensor for the temp or a different air temp sensor? When I put air temp sensors in, they vary wildly from the built in sensor temp. Sometimes +/- 50 degrees. The sensors were not close together in that case, but the built in sensor always show me the setpoint temp. Its clearly filtered to show only that. The only time it did change was when I thought I had set it to shutdown, left the lid open, and came out to discover it wasn't in shutdown, and was failing to warm the grill up. It warned me about a temp drop.
 
OP
O

Old Man Grills

Active member
Joined
Jul 27, 2020
Messages
70
Reaction score
123
Points
33
Location
UK
Grill
SmokeFire EX6
I have had a Weber CS agent tell me that plus/minus 50 degrees is not unreasonable. I would disagree.
Wow, I agree, if you’re trying to hit a specific serving time temp is everything. Also the impact on large cuts like beef rib.
Guess I’m buying an accurate ambient probe.
 

JpsBBQ

Well-known member
Joined
May 17, 2020
Messages
808
Reaction score
1,378
Points
93
Location
United States
Wow, I agree, if you’re trying to hit a specific serving time temp is everything. Also the impact on large cuts like beef rib.
Guess I’m buying an accurate ambient probe.
Just a little nugget for yah, a good oven will fluctuate 50 degrees routinely. It just doesn’t tell you that it is. I haven’t noticed such fluctuations on my cooks at all. Only issue I’ve had is when it gets stuck after opening the lid and I’ve had to change the set temp. Annoying, but I’m hopeful this will be eliminated eventually.

Second nugget, every protein cooks at a different rate. Often times a butt or brisket can be hours different. Monitoring and adjustment are mandatory in good BBQ. Internal temp of your protein is everything. It far outweighs all the other factors or variables. World champions cook at 225 and others at 275-300. Having a resting cooler is a great tool. Always plan to be done early and then rest. Your product almost always improve with a substantial rest anyway.

Just trying to relieve unneeded stress for everyone.
 

rwhapham

Active member
SOTM Winner
Joined
Nov 23, 2020
Messages
69
Reaction score
150
Points
33
Location
Rockwall, TX
Grill
SmokeFire EX4
Weber has an air probe. Just stick it in one of the ports and leave it there. Their probe at $15 matches my more expensive thermometers.
I have one from when I used Weber's iGrill temp monitor on my WSM. I can also vouch that it is an accurate thermometer. Now I'm just waiting for Weber to implement some decent graphs in the Weber Connect app so I can actually see what is going on without having to watch it all the time. I will say, though, that under most conditions, the ambient probe eventually hovers around the SF setpoint. But you can clearly see how much heat you lose when you open the lid. Why the SF temp display doesn't reflect this is a mystery to me. Maybe Weber felt that because of the ease of using the SF, they'd be getting a customer base that they needed to hide some of the inherent uncertainty of BBQ from. And I somewhat agree with that. Given that it's a relatively small fire giving off the heat (vs., say, a WSM or offset smoker), I can see how temp fluctuations could occur more easily. It then becomes how well the SF reacts to those and how long the temp stays out of tolerance. If I thought I was cooking at 275 but it was more like 225 for the span of hours, I'd be quite irritated. But if it dropped to 225 for 10 minutes or so and then corrected itself, well that's the experience of cooking over a fire. I don't say any of this as a jab to anyone (honestly), because I think it's fantastic that pellet grills open up the world of BBQ to those who wouldn't be inclined to babysit a wood and charcoal smoker. But for those of us who have had to keep a fire going, I'd say that the mechanics of any pellet smoker are pretty dang amazing. Not saying that Weber (and others) don't still have issues controlling those mechanics, but I'll take it warts and all.
 

Tbone707

Member
Joined
Oct 18, 2020
Messages
30
Reaction score
34
Points
18
Location
St Louis, MO
Grill
Weber SmokeFire EX4
These are some of the weird inconsistencies I have been seeing with the WSF after the December update. After having 2 flame outs during Smokeboost doing jerky I set the grill to 550 F for some tri tips. During that warm up the WSF internal probe showed 280 F and the Inkbird probe showed 261 F , 19 F degree difference. The WSF probe then showed 425 F and the Inkbird probe showed 423 F much closer. Then when the WSF grill indicated it hit its target temp of 550 F the Inkbird showed 514 F and never went above that. The Inkbird probe was calibrated and the probe was set within 1 inch of the WSF internal probe. It is weird that the probes can be so far apart at times and then almost identical at other times.
 

Attachments

  • VideoCapture_20210123-180229.jpg
    VideoCapture_20210123-180229.jpg
    127.5 KB · Views: 10
  • VideoCapture_20210123-180559.jpg
    VideoCapture_20210123-180559.jpg
    117.4 KB · Views: 10
  • VideoCapture_20210123-180640.jpg
    VideoCapture_20210123-180640.jpg
    137.4 KB · Views: 10

AHoneyman

Well-known member
Joined
Apr 14, 2020
Messages
442
Reaction score
614
Points
93
Location
Dallas
You can not use the temp displayed on the controller as the real temp. It is the temp that the controller/PID has calculated from the software/firmware and the temp set point. The real temp would be shown on an air probe stuck into another port.

Also, differences of 20 degrees is close enough for BBQ. It is the 50-75 degree differences and wild swings that become problematic.
 

Latest Discussions

Top