The best way to fix this is to make sure the smoke sensor isn't dirty. Take the panel off of the top the grate... And take the panel off of the bottom. You can access the screws by opening the door.
This will allow you to access the screws that are in sideways on the left panel door.
Then unscrew just a little bit the back screws just to allow the metal door to slide out and remove it place it somewhere so it doesn't fall.
At the exhaust point you'll see a red cable going into the pipe.
It has two metal pieces that clasp onto a groove. Just use your fingers and pull them a little bit and gently lift the probe out.
Give it a clean with a wet rag dry it nicely.
And while you're in there just vacuum.
The other thing I would recommend is on the clean out valve you probably have one near the entry of the stove Make sure any accumulation of dust is out of there.
My tee s about 6 in away from my stove..
I also have another tea on the outside so I can clean both areas
Every year when I clean my smoke chamber which is inside I use a long tube hooked up to my vacuum and kind of go in there to try to get all the ash and junk out I also use a brush too.
Sometimes Ash can accumulate in there and also cause the smoke not to go out as fast.
The last test you can do is going to hit the plus button for 6 seconds which is the last button on your stove hold it down and scroll to stove status.
While the stove is operational you'll see the temperature of the smoke probe.
I think when it reaches 176 or something the fan turns on anything lower it won't.
It takes a good like 20 minutes or so for the fan to go on after the stove is on and there are a lot of variables like if you're at power 3 or at power One or at power 5...
But as long as your temperature is increasing that's a good sign and that just means your stove might have gotten a slower burn it might be at level 1 and the fan just shut off temporarily it will go back on after a few minutes after the temperature goes back up... Can be due to burning the stove at level 1 or just the pellets going through a cycle where you have a few pellets that don't burn as well so the stove pipe doesn't get as hot this is completely normal
I actually just completed this process about 5 minutes ago and just for your information I turned on the stove and it took about 18 to 20 minutes for the fan to go on when I hit the status button it was 178° f
The flame was medium but burning on level 3... So it's natural to assume that if it goes back to level one for a while... And you see that slow globurn the fan may turn off for a little bit until the temperature goes back up... If you want the fan blowing constantly I would probably recommend you increase the temperature of the stove to like 75... And put it on power level 3... That way on those cold winter nights it'll constantly blow hot air and you never have to worry about the stove getting too cool.. this can be caused by some batches of pellets...some burn hotter...some colder... Even la Crete... The ones i burn have some variations in the heat output.
If you're worried about the fan not working there is a way to go into the factory settings and using the code I think it's e9... Will allow you to see the different RPMs and cleaning time settings.. you just have to basically scroll through and keep hitting the set button and eventually it will go to the fans level 1 through level five. This is a good way to test if you're fan actually works without having to turn on your stove. If the fan doesn't turn on in those processes that means the fan may be bad.