What you are describing is exactly how my machine was behaving before replacing the probe. Temp reading would impossibly drop from 95 to 70 in about 1 minute and then within a minute be back to 95. I had previously replaced the control board due to issues with the steam boiler refill not working after the machine came up to temp but the AKO controller is still the same one. Not sure if I still have the video of the behavior, it's not on my phone any longer.
On Thursday, March 10, 2022 at 11:24:08 AM UTC-6 Andre wrote: > Thanks for details. I think I may have failed to mention - looks like > temperature drop occurs only when machine sits idle. Initially when turned > on it gets to set 93c but begins to drop gradually if unused. Flushing a > couple of oz through the brew boiler gets it back to target temperature. Is > that failing temperature sensor or something else? > > Sent from my iPhone > > On Mar 10, 2022, at 11:29 AM, Rob <[email protected]> wrote: > > I unscrewed the brass probe from the boiler, took some work but not as > bad as you probably had with the heating element. I used the exact part > below. I usedTeflon valve packing when I put the brass probe back in. I > used a food grade heat sink compound inside the probe to make sure there > was good thermal transfer and then RTV 4500 silicone on the top of the > brass probe. > > > > > https://www.ebay.com/itm/224663930387?hash=item344f038613:g:4P8AAOSwXI1cIjlS > > On Wednesday, March 9, 2022 at 8:16:02 PM UTC-6 Andre wrote: > >> I was leaning in the bad probe direction. I did not get a good looks as >> I was replacing the busted heating element but entire top of the boiler was >> covered in insulation powder. I just had to replace the line to the brew >> pressure gauge as it was clogged by this stuff. Do you have the part number >> and the source? >> >> Coating is all crumbled up in the well as far as I can see. Do you >> unscrew the well or just pull old one and end up removing it anyway if the >> wire breakes? >> >> Sent from my iPhone >> >> On Mar 9, 2022, at 8:24 PM, Rob <[email protected]> wrote: >> >> Have you looked at your brew boiler temperature probe? I was having the >> same issue on my B2 and the temp probe was apparently bad. The coating on >> the wires at the boiler was crumbling and when i finally got a replacement, >> the old one disintegrated when i pulled on the wire. Took a little work to >> clean out the hole it went into but the new one has been working perfect >> for quite a while, no more than a 1 degree drop in normal operation. >> >> >> >> On Wednesday, March 9, 2022 at 5:04:51 PM UTC-6 Andre wrote: >> >>> Both brew and steam boiler water feels hot. Hard to tell the exact >>> temperature without a digital thermometer though. >>> >>> Sent from my iPhone >>> >>> On Mar 9, 2022, at 5:11 PM, Ira <[email protected]> wrote: >>> >>> >>> >>> Hello 'Andrey, >>> >>> >>> Wednesday, March 9, 2022, 1:10:40 PM, you wrote: >>> >>> >>> Hi group. I recently replaced brew boiler heating element on my original >>> Brewtus 2. With new heating element installed and replaced vibratory pump, >>> deaerator and OPV I observe the following symptom: when machine is turned >>> on initially, pump turns on as usual, machine heats up to set 93C >>> temperature. But then, half an hour later, display suddenly drops into the >>> 70C. What can be the culprit to check? Thanks >>> >>> When it drops, is it really cold or is it really hot? It could be doing >>> this because the sensor gets messed up when it gets hot and in that case >>> the brew boiler should get really hot. If for some reason the steam boiler >>> is not heating properly, that would also cause the brew >>> >>> >>> -- Ira >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Brewtus" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/brewtus/1666607450.20220309141108%40gmail.com >>> >>> <https://groups.google.com/d/msgid/brewtus/1666607450.20220309141108%40gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "Brewtus" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/brewtus/5a3a6a17-194a-4796-bb83-7a82ab5a1351n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/brewtus/5a3a6a17-194a-4796-bb83-7a82ab5a1351n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- > You received this message because you are subscribed to the Google Groups > "Brewtus" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/brewtus/bb5903a7-dfc9-41c5-8591-43d0347cf0c5n%40googlegroups.com > > <https://groups.google.com/d/msgid/brewtus/bb5903a7-dfc9-41c5-8591-43d0347cf0c5n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- You received this message because you are subscribed to the Google Groups "Brewtus" group. 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