[Elecraft] K3 Fault 6 and loss of power control

[Pete Smith N4ZR]

Today I started seeing this in my K3 driving a KPA-1500.  It only needs 
around 30-34 watts to drive it to full power on CW, but when I set the 
K3's power to that, and everything looks fine, occasionally the K3 
displays Fault 6 on its panel and causes the KPA-1500 to fault, 
displaying 65 watts input on the amp's display and well over 1500 watts 
on the power bargraph.

I can't find any reference to Fault 6 in the manual for the K3 - can 
anyone clue me in?  Is something dying in the K3?

-- 
73, Pete N4ZR