HomeRoast Digest


Topic: Behmor Err4 - any weekend help? (7 msgs / 190 lines)
1) From: Greg Hollrigel
What a bummer way to start the weekend.  Just finished doing a full clean
of the Behmor, and was running the 1/2 A cleaning cycle and got the Err 4
message about 8 minutes into the cycle.  Cooling cycle runs fine.  Tried a
reset by unplugging and plugging in, and it still gave me the message.
I submitted a support ticket to Behmor, but I'm thinking they won't get
back to me until Monday.  If I can't fix it this weekend, I'm out of
homeroast for my upcoming camp trip.  I checked the wires that I could see
going to the fans, and they look connected.
Just thought I'd check here with all of the great electronic gurus, and see
if anyone else has any ideas of what I could check to see if I can fix it
before Monday.  I'm very simple when it comes to electronics, so I don't
plan on doing anything serious like replacing a fan or anything.
Any thoughts or suggestions?  Feel free to email me off list if there might
be some issues with conflicting with my awaited Behmor support.
Thanks,
Greg
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2) From: John Nanci
Error 4 is the draw fan, assuming it is a 'real' error and not and 
error error :)
Just in case there is a clue there, would you describe your 'full clean'.
In the first case above, take off the back exhaust cover and make 
sure the impeller on the draw fan and is spinning freely.  If it's 
catching on something (a screw that has come loose for instance) then 
as it heats, the metal will swell and cause the error - and often 
intermittently at that.
If it is catching on a loose screw, it's moderately involved to fix 
it, but not real hard.
Check that and report back.
If it's an error error (meaning a false error) that usually requires 
a board change and there isn't anything you can do about it.
John
At 10:10 AM 8/11/2012, you wrote:
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3) From: Greg Hollrigel
John:
Thanks!  Following whatever the law of mechanics and IT support are, I ran
it this morning (with the caveats below), and the error did not appear.  It
appears just asking for help from those more knowledgeable than myself is
enough to fix it.  :-)
In all seriousness, I did the "super clean".  Basically, wiped the roasting
chamber clean, removed the side panel, exhaust panel, and the back panel,
and wiped off the residue/dust, and blew away all the chaff.  Then I
reassembled to do the 1/2AP1 clean burn.
Today, I left off the side panel, and removed the silver exhaust cover, and
ran the 1/2 A P1 again with those 2 pieces removed.  The fan above the
circuit boards (presumably the draw fan) ran the entire time, and just
seemed to change speed a bit.  So it was successful, and I'm guessing it's
not the fan that is stopping, which based on your comment below, I'm
guessing might be leading to a circuit board issue.
However, I have a thought too.  Do you Behmor roasters out there think
excessive ambient heat could have caused it to short out and give me the
Err4?  I live in Orange County, CA, and it's been hot the past few days
(probably mid-80s with 60-70% humidity), and I roast in my garage, so maybe
a bit higher than that in the garage.  I never had this problem before, and
the roaster is about 3 years old with probably a 100-200 pounds of coffee
roasted.
Is there any downside to roasting with the side panel off to allow the
circuit boards to try and stay cooler?
Anyways, I think I'll try a roast late tonight or tomorrow morning in the
cool temps and see if it works, but interested in your comments to my
thoughts/questions.
Thanks,
Greg
On Sat, Aug 11, 2012 at 1:56 PM, John Nanci wrote:
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4) From: Greg Hollrigel
I also checked the other fan that blows into the chamber and it spins fine.
I couldn't wait anymore so I put a fan on the roaster to help cool it and
successfully roasted 2 batches of beans.   Yay!  One less thing to worry
about for camping.
Thanks for all the input.   I hope to hear from tech support tomorrow about
other possible causes.
Greg
On Sunday, August 12, 2012, Greg Hollrigel wrote:
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5) From: John Nanci
Greg,
It sounds to me that you had one of those 'unknowns' that hopefully 
will not re-occur.  I would hazard to guess it was the cleaning, and 
getting particles into the fan, causing it to error out.  And 
basically it worked itself out with opening it up and checking it out 
again.  I doubt tech support will be able to tell you anything more 
than this.  There are really only three causes of an Err 4.  Bad 
fan.  Jamming fan.  False PCB signal error.  That's it.  Choices 1 
and 3 basically don't fix themselves.  2 sometimes does or can be fixed.
As for the heat, your garage, etc, no, that won't cause an error 
4.  Sometimes and Err 1 or 2, but not a 4.
Congrats on roasting 2 batches.  I doubt the fan on it was the 
reason, but it's no harm to have the side off with a fan on it.
John
At 01:36 PM 8/12/2012, you wrote:
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6) From: nannernlp
I get an error message about 50% of the time only on my cleaning cycles, never on an actual roast. Im in Texas and roast on the porch and it's been 100+ for a while. 
Sent from my iPad
On Aug 12, 2012, at 11:50 AM, Greg Hollrigel  wrote:
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7) From: Dave Huddle
Two times, while the roaster is in the cooling phase of an empty
cleaning cycle, I've got Err 3.    Both times,  I let it cool about 5
minutes and restarted it in cooling mode with no  problem.    It's a
very rare event - I've run over 500 roast or cleaning cycles in the
Behmor.
Dave
On Sun, Aug 12, 2012 at 6:37 PM,   wrote:
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