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Regarding the second round of calibration, you simply add freezing ice water, then check it with an accurate probe thermometer. Then add that value into Calibration Point 1 once again as you did the first time. This changes the slope of the line each time you do it, and so it gets closer. The...

It could be that the two slopes don't intersect at all: Source: The two-point calibration procedure - ppt download

Based on the following, the "fixed" reference point does seem to be towards the middle, where the linear "correct" line ("ideal response") intersects with the linear "incorrect" line( "actual response"): Calibrating Sensors However, this can't be correct, since it would indicate that the...

I've mentioned to them that there are several people having similar experiences on a forum I'm on, and offered to let them know the link. They were not interested. They seem to rather not know if there are issues, and will only consider them if more than one person notifies them about the same...

I'm not sure why you would want to erase the settings each time you do a calibration, since you want to retain the earlier calibration results. The next calibration then makes the end results closer. I have been leaving a pail of water outside overnight, which brings it close to freezing...

Do you have any idea on how to interpret the ADC numbers? I know they represent the analogue to digital conversion, but what exactly do they mean? Regarding the 2-point calibration at 138 F and 170 F, you may still have to do the calibration 2 or 3 times to narrow the range each time you clip...

I think the Brewzilla itself is an excellent piece of equipment for the price. Where Kegland failed is in two areas. 1) the RAPT controller; and 2) sufficient documentation. The RAPT controller does not seem to be part of Kegland but something outreached. The factory calibration is not done by...

I think I now have a fix for the Brewzilla Gen 4 temperature calibration issue! After my third attempt at trying to resolve the temperature difference on my Brewzilla, I think I sort of understand how the calibration algorithm works, at least in general. Knowing how it works is the first step...

Once you change one of the points, it affects the other point that you have already set. Thus you have to do the calibration several times in succession. Each time it gets closer. Please let Kegland know as they tell me I am the ONLY person they have heard this from. The person I spoke to is...

I think it indicates that the calibration has to be done several times in succession, not just once. Each time you correct one of the points, it changes the other. It does seem to get closer each time, though, so it has to be an iterative process. Please let Kegland know. They keep telling me...

So I put the theory to practice. I filled the Brewzilla with ice water, recirculated it, let it run for about 5-10 minutes until the temperature on the Brewzilla stabilized. Then I checked the temperature of the water with two accurate probe thermometers (accurate because both read the freezing...

That's a good point. Maybe most customers are reporting any issues directly to their supplier, and the supplier is not lettign Kegland know.

Initially, the temperature was 7 degrees Fahrenheit out, but after the very careful (and time-consuming) 2-point calibration, it was 2.5 degrees out. Thus it is the error that remains after the calibration. The differences at each end were quite significant, and obviously incorrect. I think the...

Yes, your calculation confirms the value I got. It's only 1 degree difference, but why not put in the correct amount, sionce other errors accumulate. Interesting, our local supplier tells us to contact Kegland not them!

I heard back from them today after I sent a photo showing the programming bug in their RAPT App. They are going to look into it, although they said the App was being dealt with by someone else. Regarding the calibration issue, they said they are not going to pursue that since I was the only...

I think it's an ego thing. Kegland thinks their machines are perfect and doesn't like constructive criticism from users.

Good catch - I meant 211.3 F. The boiling point for wort and for water is not that different, from what I have read. Yes, I use the wattage control. I was surprised to see that it goes well beyond 1500 watts for the 120 V machine. I think it went up to about 1700 watts (on a dedicated circuit).

The boiling point at that altitude actually does change that much, that's why I mentioned it. Check this out: Boiling Point at Altitude Calculator Every time I've reported an issue with Kegland they dismiss me and say that "if that was true, why haven't they heard from others reporting the...

I had the exact same thing happen. Even after I finally got it out and took off the tape, etc., it fit into the bootom very tight and I constantly have trouble getting it out to clean each time. I have to bend it to get it out, otherwise it scrapes the inside of the Brewzilla. It's already so...

Yep, there are definitely some issues with the Gen 4 - this applies to at least "some" of the machines shipped out west. Kegland staff don't believe this because few people have the nerve to complain. They are also supported by many users who don't check it out carefully enough, and seem...