Hi, On Wednesday, July 20, 2016 at 12:48:30 PM UTC-4, Bruce Keeler wrote: > > > I would do a bit more poking around with your voltmeter. Keep one probe on > the neutral terminal and test the voltage from that to various points > around the machine. You might find the missing voltage, or find that one of > the three conditions is not, in fact, true. >
and thanks. I started again from scratch, and couldn't reproduce the 60 - 65 volts going to the brew boiler, until I remembered how I found it in the first place. On the WholeLatteLove video for testing electronic components the voltage to the steam boiler is tested by powering down, removing the leads and connecting them to a voltmeter and then powering up. For the steam boiler this gave the expected ~120 V but for the brew boiler it gave ~65 V. Even on power up this later this evening. I re-checked the resistance across the steam and brew boilers, and each was 13 - 14 ohms. The voltage from neutral to the pressurestat, steam boiler, PID and solid state relay (A1) were each ~120 V. The voltage from neutral to T1 on the relay was about 120 V, but it dropped to about 25 V when the steam boiler element was heating. The voltage from neutral to L1 on the relay was negligible, as was voltage from neutral to the high limit switch on the brew boiler (and at the element). Before doing any of this checking I reset the PID (hold "^", power on, wait for PrS, release "^", power off). Another point of information. For a while his evening the brew boiler heated up fully, and it stayed that way long enough that I was able to run out for beans, find a good grind and pull a few shots. Does this look anything like a relay failing? Thanks again. cheers, -wb -- 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 post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/d/optout.
