User guide

Error Codes

In the event of a problem, the power status indicator (2) will flash error code(s) in red.

Errors are identified by a sequence flashes. There is a pause between codes, and in the

case where there is only one error code, the same code is repeated.

(SECTION SIX: Troubleshooting continued)

Diagnostic Code Possible Condition Course of Action

1 flash Internal power supply rail fault Breaker Switch will

automatically shut off.

Contact your Dealer /

Distributor or the Krell

Factory

2 flashes Excessive DC at Output Breaker Switch will

automatically shut off.

Contact your Dealer /

Distributor or the Krell

Factory

3 flashes Excessive Output Current Check loudspeaker and

cables for short circuits. If

you are driving more than

one loudspeaker per

channel, check that

thecombined load does not

drop below 2 Ohms. The

power breaker switch must

be shut off to reset the fault

condition.

4 flashes Excessive temperature Allow the amplifier to cool,

and increase ventilation. If

the problem persists,

please contact your Dealer

/ Distributor.

5 flashes Excessive DC at input Check the preamplifier

output and source outputs

for excessive DC voltage.

If you are using a vacuum

tube preamplifier

, use only

the single-ended inputs, as

they are capacitor coupled.

6 flashes Line frequency error Contact your Dealer /

Distributor or the Krell

Factory