[Homeroast] Behmor Err4 - any weekend help?

John Nanci john at chocolatealchemy.com
Sat Aug 11 15:56:44 CDT 2012

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.


At 10:10 AM 8/11/2012, you wrote:
>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.
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