Krell Industries Evolution One - Manual (Page 31)

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
resumes. Input capacitors are 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 off. The amplifier dealer or distributor, or
repeats this action when the Krell Service
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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