[Elecraft] [KPA500] 270V ERR

[Augie "Gus" Hansen]

Be certain that both ends of the heavy power cable between the PS and 
the amp are properly installed. Unplug the power pole connectors and 
reinsert them fully until you hear and feel the click.

This ERR indication happened to my KPA1500 recently because the APP on 
the amp end was slightly loose. I have revised my cabling layout to put 
some strain relief on that heavy cable to prevent this problem from 
recurring.

Gus Hansen
KB0YH (proud son of Norway!)


On 8/7/2020 10:11 AM, LA7NO wrote:
> Hello,
>
> We are constantly getting the "270V ERR" when switching over to OPER.
> We have checked that the micro-switch is working properly and is correctly
> operated by the lid.
> We have also tried the power reset, but still the same.
>
> We know there is a problem with the I/O card, since we are not able to get a
> PC connected to the serial port - RS232 (PC).
> So, we can not use the KPA500 Utility Program.
>
> Is it in any way possible that a fault on the I/O-card can cause the "270V
> ERR" message?
>