I suffered a brew day disaster today. I milled my grains, mashed-in at 122 degrees for a multi-step mash schedule and after 20 minutes at 122, I raised the Foundry temperature to 149 degrees. The system got the mash up to 131 degrees and then abruptly shut-off with an E3 error.
Having no idea what that was, I got out the manual and saw that E3 meant that the unit was operating without water and to "flip the unit over and push the reset." Obviously, it was being operated with 6.3 gallons of water and I couldn't flip it over with the mash in it. However, I was able to tilt it up enough to press the reset. I reset the Foundry temperature to 149 degrees, but the ACT displayed on the Foundry screen read 160 degrees. I used my digital probe, and it had the actual mash temp at 121 degrees. There was nothing I could do to cause the Foundry to display the correct temperature, so I was forced to abort and dump 9 lbs of mashed-in grains.
The area around the temp sensor was perfectly clean.
What possibly could be wrong with the Foundry?