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Topic Title: Sudden loss in temp
Created on October 10, 2012 at 10:28 PM

Dan

I've had a Holland for four years, and I've never had any trouble with tempterature until now. Tonight I put inch thick pork chops on. When I preheated and opened the lid to put them on, I knew there was something wrong. The chops didn't sizzle when I put them on the grate, and I could just feel the temp as too cool. At the end of 20 min., I went out and turned them. Again, as soon as I opened the grill, I knew it was too cool. I went ahead and did the 20 min on the second side. At the end of that time, I opened the grill and the chops were about 1/4 done. The grill was so cool that I could actually put my hand on the outside. It's been a couple of months since I've cleaned it, so it's pretty dirty, but I've cooked with a dirty grill before, and it never had this heat problem. Tomorrow I plan to take it apart and see if anything looks out of place. Peeking through the holes, the flame looks to be the right color. Any ideas? Again, the is a 4 year old Heritage that has never had any trouble with temperature. By the way, it was 50 degrees out at the time. I've grilled here (central Indiana) in January when it was 10 degrees out with no trouble.

@ Dan

Your sudden heat loss is probably due to a drop in gas/pressure to the burner. Check the "Trouble-shooting" tips under "Support" at hollandgrill.com
If you are on an LP tank, try the regulator reset explained in that section. You may have done something to activate the safety valve in the regulator & it is blocking some gas flow. You say the flame looks good, but if the flame was correct it would heat correctly.

Dan

Thanks for your reply. I just finished cleaning the inside of the grill. There was quite a bit of gunk on the food grate and the drip pan. I took the pan completely out so I could completely clean the drain pipe. Since I did this in the daylight, I had a hard time seeing what the burner was doing. It sounded normal and was heating. I decided to put the Holland digital food thermometer inside, close the lid and take a look at the temp. After about 25 minutes, the temp topped out at 288 degrees. I'm not sure if a probe-type thermometer is the best way to test the inside temperature. Maybe not.
This is a natural gas hookup, and I had a licensed heating/cooling contractor install the gas service to the grill when it was new. I guess I'm going to have to wait until I cook next to see if the temperature problem persists. Any additional comments would be appreciated.

@ Dan

Dan,
The wireless thermometer probes will fail if they get too hot. Don't use to check grill temps.
If it doesn't cook hot enough on a NG set-up, it is more likely that something has blown up through the line & is partially blocking the gas valve orifice. Holland has good info on changing the orifice on the web-site in the "Support" section. You would not change it, but just remove it from the gas valve & clear it.

Dan

Thanks, Dan, for this additional information. Is this the kind of thing you think I could do, or should I call the heating/cooling guy who hooked the NG up? I've looked at the information on the troubleshooting page, and it doesn't look all that complicated.
I thought maybe the probe wasn't going to give me a true ambient temperature since it's designed to have mass around it to register temperature.

@ Dan

You can do it.You will be surprised at how simple the heating system is when you take it apart.
When you put it back together, before you fire it up, take the end of the gas hose away from the house. Blow a few seconds of gas through it to blow out any particles that might still be in the hose.

Dave

use an oven thermometer to check what temp your grill is getting up to they don't cost very much

Dan

Dave, I think I'll buy an inexpensive oven thermometer and check the Heritage temperature with that before I take anything apart. This blog is one of the very best parts about owning a Holland grill. I have yet to have a problem or question that when I posted it here wasn't answered and usually with several replies. Holland owners are the best. Which isn't surprising since they own the best grill going.

Dan

I've included a picture I took of the burner on my Heritage that I'm having temperature trouble with. To my untrained eye, the flame looks fine, color-wise anyway. Maybe it should be a bigger flame indicating the gas supply is insufficient. Can someone take a look and give me an opinion before I take the front off to get to the orafice. This is a natural gas hookup, and the grill worked fine for four years. I just cleaned it,and it's only getting to 250 degrees in mile weather.

@ Dan

That flame is too short & is all blue. That indicates to me that not enough gas/pressure is getting to the burner. On a natural gas set-up that usually means a blockage (orifice) or just low gas pressure at the end of the hose .
Just so you know when you get there, the flame should be about 2 1/2" long, blue with yellow tips & showing more pressure by coming out sideways for an inch or so.
Clear the orifice, make sure the valve is clear & purge the hose before reattacning it to the valve.

wes

If you have the waffles in your vent stacks you might want to check those.I had the same prob and the waffles get clogged w gunk. Take one or both out. When the lid is shut this is the only means of venting if they are clogged the holland does not get oxygen. you raise the lid and you never can tell by looking at the flame because it is venting with the lid open. This is what fixed my prob and i found out through this blogg. You might not have the waffles i hear they stopped putting them in and say there is no nead for them. I am fine wout them. happy grilln

@ Wes

The stack filters were only used on early ('98/'99)stainless steel grill models. You are correct that anyone with these filters should remove them & discard them. They can cause the burner to go out if not kept clean.
Since Dan has a Heritage (black grill) he should not have the filters in his stacks.

Dan

No, I don't have the waffles since this is a 2008 Heritage. I really appreciate the response from everyone about this. I think I'm going to take Dan's advice and take the control panel off to get to the orafice. I need to wait for s weekend and warmer weather than we're having. I want to make sure to get this taken care of before winter hits because, cold as it is here in central Indiana, we always use the Holland in the winter.

Dan

Well, my Heritage is working like new again. After doing as much as I felt comfortable doing, which included cleaning the burner screen and trying to take the lines apart to get to the ofifice, I called the Heating and Cooling man who installed the grill and hooked it up to my natural gas line four years ago. He cleaned the orifice saying there was a boatload of bugs clogging it. It's now registering over 400 degrees. The pork chops post cleaning were wonderful. Again, thanks to everyone, especially @Dan for taking the time to respond to my questions.

fred

I am experiencing the same thing. I changed tanks to no avail. I will take apart the controls and clean the orifice. Hope this works as brats aren't the same out of frying pan and football party seems out of place.