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jphussey
Joined: 17 Oct 2012 Posts: 171
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Link Posted: Fri Dec 09, 2016 9:40 pm Post subject: Amp meter malfunction? |
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Twice today my amp meter seems to be freaking out. The display just changes to what looks like a -1 for no apparent reason. I had just bumped up the HLT to 170 for mash out.
Any idea what's up with this? The first time was after transferring strike water to the MLT. I powered off the panel and back on again and it worked fine until this 2nd time.
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11121 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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jphussey
Joined: 17 Oct 2012 Posts: 171
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Link Posted: Fri Dec 09, 2016 9:51 pm Post subject: |
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Strangely enough, it appears to have just started functioning normally again. Any ideas on this? Loose wire?
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jphussey
Joined: 17 Oct 2012 Posts: 171
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Link Posted: Fri Dec 09, 2016 9:51 pm Post subject: |
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This is my first brew, so no historical data. The kit was a DIY purchased from your site, and I think the DC voltage was preset to 4.7, right?
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11121 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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jphussey
Joined: 17 Oct 2012 Posts: 171
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Link Posted: Fri Dec 09, 2016 10:12 pm Post subject: |
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Just do that with a voltmeter across the two posts on the transfomer? While it's running, right?
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jphussey
Joined: 17 Oct 2012 Posts: 171
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Link Posted: Fri Dec 09, 2016 10:15 pm Post subject: |
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Both of them read ~4.8V (it was negative, which I think means I have the probes backwards from polarity, right?). This is on the wires that run to the amp meter.
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11121 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Link Posted: Fri Dec 09, 2016 11:43 pm Post subject: |
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jphussey wrote: | Just do that with a voltmeter across the two posts on the transfomer? While it's running, right? |
No. We need to know the output of the DC power supply, not the output of the transformer.
jphussey wrote: | Both of them read ~4.8V (it was negative, which I think means I have the probes backwards from polarity, right?). This is on the wires that run to the amp meter. |
If it reads negative you have something backwards. Make sure to follow the build instructions and hook positive to positive, and negative to negative.
Can you confirm that you are reading 4.8V DC? And that the polarity is hooked up correctly?
Kal
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My basement/bar/brewery build 2.0
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jphussey
Joined: 17 Oct 2012 Posts: 171
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Link Posted: Sat Dec 10, 2016 2:08 am Post subject: |
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Yes, 4.74V DC and 4.81V DC respectively. The negative was just because I had the probes of my multimeter flipped around.
The amp meter probably flipped back and forth between that weird -1 thing in the attachment above and normal function about a dozen times during the brew day. The first time I just reset the panel and it started back up normally, but after that I just let it go because everything seemed to be functioning fine. That's when I noticed it was just changing back and forth by itself.
I couldn't really discern any pattern to it. For instance, I had the boil going and it probably went through this cycle 2 or 3 times in that 90 minute span. I wasn't changing anything on the panel, etc.
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11121 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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jphussey
Joined: 17 Oct 2012 Posts: 171
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Link Posted: Sun Dec 11, 2016 2:16 am Post subject: |
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Ok, will do!
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