Issue with HSZ80 EMU

I have an ES40 that is connected to a BA370 array with HSZ80
controllers.  The EMU alarm went off, giving me a solid amber light on
the EMU button and on the BA370 upper-right LED.  I pushed the button,
and that stopped the alarm.

According to this:

http://www.ds10.com/FPL/HW/STOR/ENCLOSURES/BA370/SHOOTERS/ts_emu_module.html
http://www.ds10.com/FPL/HW/STOR/ENCLOSURES/BA370/SHOOTERS/emu_error_codes.html

this means an error condition (temp, blower, DC or term power).
However, the combination of LEDs I see isn't in the list.  I have the
system fault LED solid amber and the power LED solid green.  Nothing is
blinking, and all the blower LEDs are out.

Everything appears to be operating correctly; the HSZ80s both report no
errors, I can feel all the fans blowing, the air is cool, the power
looks good.

Any ideas as to what might be wrong?
-- 
Chris Adams <[email protected]>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.