solid state relays (of this type) never fail partially on or off. they are binary.
try shorting out the load side of the SSR. Does it heat properly then? D On Friday, July 22, 2016 at 12:41:15 AM UTC-7, William Boshuck wrote: > > 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.
