Elecraft KXPA100 Programmers Reference - Manual (Page 14)

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Fault Code Name Detail value Description
reduce power.
S SWR SWR * 10 (999 means
99.9:1) NO TUNE
Excessive SWR. ATU is
not available or is in a
mode that inhibits
automatic retune.
T Temperature Temp in tenths of a
degree C. See ^TM HI TnnC
Excessive Heat Sink
Temperature
Note: Seven segment display limitations require that fault codes not be defined with K, M, Q, V, W, X, or
Z.