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Diagnostic Codes Possible Condition Course of Action
1 flash, pause, 2 flashes, Amplifier is over Allow the amplifier
repeat; then the amplifier temperature to cool. When the LEDs
reverts to stand-by mode stop flashing, the ampli-
fier has cooled down.
flash, pause, 5 flashes, Short circuit Check all connections
repeat; then the amplifier on output at the amplifier and loud-
reverts to stand-by mode speaker binding posts.
Cycle the power breaker
switch (21) on the power
supply and attempt to
power on the amplifier.
Call the factory if the
problem persists.
1 flash, pause, 7 flashes, Line frequency error: Contact your local
repeat; then the amplifier The amplifier is set for authorized Krell
reverts to stand-by mode 60 Hz, but is attempt- dealer or distributor.
ing to operate via a
50Hz system.
Output mutes while music DC detected at input Check source and
is playing, and then sound during playback. preamplifier for
r
esumes.
Input capacitors ar
e
excessive DC output.
automatically engaged. Once DC has been elimi-
nated, cycle the power
breaker switch (21) to
disengage the input
capacitors.
The power breaker switch Possible component Contact your local
(21) trips; then the amplifier failure. authorized Krell
powers of
f. The amplifier
dealer or distributor
, or
r
epeats this action when
the Kr
ell Ser
vice
powered on. Department.
Evolution One amplifiers report operational issues by flashing the power/stand-by
LEDs (4) in red, in a specific sequence, or by tripping the rear panel breaker (21),
as follows:
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