[Elecraft] KPA100 error/status codes ("PA Exxx" menu entry)

[Wayne Burdick]

The following information was inadvertently omitted from the KPA100
manual's Troubleshooting section. It will be added to the manual and
also posted on our web site.

73,
Wayne
N6KR

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KPA100 ERROR/STATUS CODES

The "Exxx" PA menu setting can show up to 3 single-digit error/status
codes. Normally there will be none ("E   "). The following codes are
used, alone and in combination:

1: PA is in QRP (bypass) mode. Usually appears with code 2 ("E12").

2: No 12V power supply connected to the KPA100. Usually appears with
code 1 ("E12").

4: The SWR became very high during transmit at or near full power,
typically because of a sudden change to an ATU setting or a shorted/open
antenna connector. This causes the K2 to reduce power to zero and show
"Hi Refl" on the LCD. The error code can be cleared by rotating the
POWER control. (Applies to KPA100 firmware rev. 1.04 or higher.) 

7: The heat sink temperature reached 85 degrees C. This causes the K2 to
reduce power to  zero and show "PA Hot" on the LCD. Both the warning
message and the E7 error code can be cleared by tapping any switch, then
rotating the POWER control (repeat if necessary). The fan will remain on
high until the heat sink temperature has dropped back below 37 degrees
C. (Applies to KPA100 firmware rev. 1.04 or higher.) 

8: This code will always be seen after setting CAL TPA, but it can also
indicate a problem with the KPA100 MCU or its on-chip EEPROM. If it's
just the CAL TPA indication, it can be cleared by turning power off and
back on.

Codes 3, 5, and 6 are not presently used.