Temperature Surges?

Sscottfitz

Member
Messages
16
Location
Hot Springs Village, Arkansas
Grill(s) owned
Trailblazer
Two cooks on our new RT-340, and we very happy with this grill......HOWEVER, during both cooks (1) Chicken Thighs at 350, & (2) Salmon at 375, we noticed an unexplained temperature surge of 40~50 deg after we'd achieved desired target temp, but maybe 10 min into the cook. Was able to manually offset the surge by lowering temps via the mobile app, and eventually we were able to get it to steady at the desired target temp. Disclaimer, new to pellet grills, and only two cooks with this grill, but wanted to see if this is normal or something to look at more closely. Got several more cooks planned for this week.(Tired a search in the forum for this discussion but couldn't find one, maybe I missed it, if I did just point me in the right direction....)
 

Mastertech59

Well-known member
Messages
1,187
Location
Burlington CT
Grill(s) owned
Bull
Welcome to the forums, are these temperature surges happing when getting the grill up to temp or is this happing after you open the lid to put the food on?
 
Last edited:

Sscottfitz

Member
Messages
16
Location
Hot Springs Village, Arkansas
Grill(s) owned
Trailblazer
Welcome to the forums, are these temperature surges happing when getting the grill up to temp or is this happing after you open the lid to put the food on?
Yes, both happened after opening the grill to reposition temp probes. I think what caught me off guard was that after the grill adjusted to get the temps back up to target, it went significantly past that (+~50 deg) without making any adjustments. When it seemed like it wasn't going to do anything automatically, I took manual steps to decrease the target temp...
 

Mastertech59

Well-known member
Messages
1,187
Location
Burlington CT
Grill(s) owned
Bull
Yes, both happened after opening the grill to reposition temp probes. I think what caught me off guard was that after the grill adjusted to get the temps back up to target, it went significantly past that (+~50 deg) without making any adjustments. When it seemed like it wasn't going to do anything automatically, I took manual steps to decrease the target temp...
This is pretty much textbook for any pellet grill. When the lid is opened the pit temp drops and the controller sees this and starts commanding too add more pellets to try to maintain temperature . After the lid is closed the extra pellets added by the controller will cause the temps to spike until burned off. The work around that some do is to lower the controllers temp before opening the lid do what they have to do shut the lid and then reset the temp on the controller. My thinking is the RT340 is a smaller grill but pretty much uses the same parts as it's bigger brothers so the temp surges or spikes tend to be greater when the lid gets opened.
 

John.

Active member
Messages
38
Location
Jefferson, MD
Grill(s) owned
Trailblazer
I recently had to make an adjustment on my RT340. I would preheat it at 225 and the temperature would rise to around 264. The factory preset for the feed rate was set to 6.5%. I adjusted that ultimately to 3.5% and the temperature dropped and maintained at 225.

Edited, Mastertech59 is dead on about opening the lid. My suggestion is for a scenario that if the temperature spikes and does not come back down, then the feed rate may need adjusting.
 
Last edited:

Sscottfitz

Member
Messages
16
Location
Hot Springs Village, Arkansas
Grill(s) owned
Trailblazer
This is pretty much textbook for any pellet grill. When the lid is opened the pit temp drops and the controller sees this and starts commanding more fuel. After the lid is closed the extra pellets added by the controller will cause the temps to spike. The work around that some do is to lower the controllers temp before opening the lid do what they have to do shut the lid and then reset the temp on the controller. My thinking is the RT340 is a smaller grill but pretty much uses the same parts as it's bigger brothers so the temp surges or spikes tend to be greater when the lid gets opened.
Thanks, good data point and it makes perfect sense. We'll continue to watch and try some of the adjustments you mentioned. Appreciate the feedback, and looking forward to more grills on the Trailblazer, it's the perfect size for use "Retired Folk" who are usually grilling for just two.........
 

Mastertech59

Well-known member
Messages
1,187
Location
Burlington CT
Grill(s) owned
Bull
Thanks, good data point and it makes perfect sense. We'll continue to watch and try some of the adjustments you mentioned. Appreciate the feedback, and looking forward to more grills on the Trailblazer, it's the perfect size for use "Retired Folk" who are usually grilling for just two.........
Not retired yet but just the two of us empty nesters for most cooks too.
 

Charlie

Member
Messages
13
Grill(s) owned
Trailblazer
Two cooks on our new RT-340, and we very happy with this grill......HOWEVER, during both cooks (1) Chicken Thighs at 350, & (2) Salmon at 375, we noticed an unexplained temperature surge of 40~50 deg after we'd achieved desired target temp, but maybe 10 min into the cook. Was able to manually offset the surge by lowering temps via the mobile app, and eventually we were able to get it to steady at the desired target temp. Disclaimer, new to pellet grills, and only two cooks with this grill, but wanted to see if this is normal or something to look at more closely. Got several more cooks planned for this week.(Tired a search in the forum for this discussion but couldn't find one, maybe I missed it, if I did just point me in the right direction....)
I am having the same problem it would surge 30-40 degrees then cool down but would burn my meat in the process mine was damaged when I got it.leg got bent was wondering if that caused mine to have a heat surge damaged the controller
any way I set the preheat to 500f for burgers Father’s Day went back out to ind it well over 600f it warped my flame deflector and it wasn’t a grease fire I had cleaned it Pryor to the cook.i called RT they said send a pic
 

Macguy

Member
Messages
22
Location
Orlando, FL
Grill(s) owned
Bull
Also, pay attention to direct sunlight. This will wreak havoc inside the pit.
Bytor - what problems do you have in direct sunlight?
I am in Orlando and I cook in direct sunlight all of the time without issues that I can see, just curious what you found. Thanks.
 

Bytor

Well-known member
Messages
228
Location
Knoxville, TN
Grill(s) owned
Trailblazer
Here's a graph of my Trailblazer becoming exposed to direct sunlight. The setpoint was 225. You can see two spikes in the pit temp. That's from the sun glaring down on it. I moved it into the shade, then back into the light then back into the shade. Initially, I couldn't figure out why my pit temp kept increasing. I tried the move and then noticed things settling back down. Temps.jpg
 

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.

Thread starter Similar threads Forum Replies Date
G Temperature Probes Rec Tec Lounge 3
N Temperature chart offline Bull RT-700 8
C Calibrate internal temperature probe? Stampede RT-590 5
Similar threads



Latest posts

Top