Operation Manual
Table Of Contents
14. Appendix 
40 
D SERIES Lake Operation Manual rev 3.0.1
14. Appendix 
14.1. Faults and warnings 
Category/Type Name On screen text Description Action
FRAME
Warning
Lake Controller ofine CTRL OFFLINE
Frame unable to nd Lake controller 
on the network
Check network cabling/
network if controller 
expected on the network
Warning
AES / Dante clock slipping CLOCK SLIPPING
Frame not able to lock to incoming 
AES stream or Dante clock slipping.
Check AES sender and 
clock conguration or 
Dante clock settings
Warning
Dante device name conict NAME CONFLICT
Two or more devices on the network 
with the same Dante name
Review Dante 
conguration
Warning
Dante module not detected
DANTE NEEDS 
SERVICE
Lake cannot detect a functioning 
Dante module
Restart device; if not 
cleared it needs service 
to operate Dante
Warning
Dante module with 
incompatible rmware
DANTE FW INVALID
Dante module not loaded 
with correct FW
Retry updating the rmware 
with LakeUpdate
Warning
Dante module disabled DANTE DISABLED
Dante module not communicated
correctly or other internal 
conguration fault
Restart device; if not 
cleared it needs service
Warning
Sense fault DSP SENS FLT:DSP
Voltage and current sensing on amplier 
output faulty. Audio continues but 
protection might be compromised. 
No load monitoring
Restart device; if not 
cleared it needs service
Warning
A/D converter power 
supply fault
A/D PSU FAULT
Voltage supply to the analog input 
converters faulty
Restart device; if not 
cleared it needs service for 
analog input to work
Fault
Audio Fault AUDIO FAULT
Internal audio interface 
not functioning
Restart device; if not 
cleared it needs service
Fault
DICO communication fault DICO COMM FAULT
Communication fault between host 
 and amplier platform
Restart device; if not 
cleared it needs service
TEMP
Warning
Temperature warning 
power supply
TEMP WARN:PSU
Power supply temperature 
approaching critical levels
Improve cooling or reduce 
output power to avoid 
temperature becoming 
critical
Warning
Temperature warning 
DSP area
TEMP WARN:DSP
DSP area temperature approaching 
critical levels
Improve cooling or reduce 
output power to avoid 
temperature becoming 
critical
Warning
Power supply 
Temperature Limit
PTL ACTIVE
Amplier is reducing output power 
to avoid power supply temp 
fault protection
Improve cooling or reduce 
output power to avoid 
limiting
Warning
Amp channel 
Temperature Limit
ATL ACTIVE
Amplier channel is reducing output 
power to avoid amplier channel 
temp fault protection
Improve cooling or reduce 
output power to avoid 
limiting
Category/Type Name On screen text Description Action
Fault
Temperature fault 
power supply
TEMP FLT:P SU
Power supply temperature reached 
internal protection limit
Automatically restarts 
when cooled down
Fault
Temperature fault 
DSP area
TEMP FLT:D SP
DSP area reached 
critical temperature
Improve cooling or 
reduce power
PSU
Warning
Under Voltage Limit UVL ACTIVE
The Under Voltage limiter is active a
 the mains supply is approaching
the lower end of the device’s
operational voltage. Output power
is decreased to ensure mains
distribution does not collapse
Increase mains distribution 
stiffness or reduce output 
power to avoid limiting
Warning
Power Average Limit PAL ACTIVE
Amplier is reducing output power due 
to average power or mains current 
draw is above safe operating levels
Reduce output power 
to avoid limiting
Warning
Breaker Emulation Limit BEL ACTIVE
Power supply is reducing mains current 
draw to stay within BEL congured 
nominal current and prole
Improve mains distribution 
and update BEL 
conguration or reduce 
output power to avoid 
limiting
Warning
Mains supply glitch MAINS GLITCH
Mains glitch (missing cycles) was 
detected on the mains inlet
Check mains distribution/
connection
Fault
Need service NEED SERVICE:1–8 Power supply internal error
Restart device; if not 
cleared it needs service
Fault
Mains voltage above 
400 volt peak
MAINS>400 VPK
Power supply detects mains voltage 
above 400 volt peak. Protective shut 
down, auto restart attempt
Check mains distribution/
connection
Fault
Mains voltage above 
270 V
MAINS>270 V
Power supply detects mains voltage 
above operation voltage. Protective 
shut down, auto restart attempt
Check mains distribution/
connection
Fault
Mains voltage below 
65 V
Mains<65 V
Power supply detects mains voltage 
below operation voltage. Protective 
shut down, auto restart attempt
Check mains distribution/
connection
Fault
Power supply fault PSU FAULT Internal power supply fault
Check mains distribution/
connection. Restart 
device; if not cleared 
it needs service
Fault
Check mains CHECK MAINS
Power supply detects unstable
mains supply. Protective shut down,
auto restart attempt
Check mains distribution/
connection
Fault
Power supply power protect PSU POWER PROT
Too high output power for too low
mains supply voltage. Protective
shut down, auto restart attempt
Improve mains supply 
voltage or reduce 
output power
LOAD
Warning
Speaker short SPKR SHORT Both LoadPilot tones below thresholds Check load or calibration
Warning
Speaker damaged SPKR DAMAGED
One LoadPilot tone is above
or below threshold
Check load or calibration










