EGK 1 Ex2
7.1 Troubleshooting
Problem /
Malfunction
Possible cause
Action
Condensate
inside the gas
output
• Condensate trap
full
• Empty condensate
trap
• Valve inside the
automatic con-
densate drain
may be stuck
• Flush in both direc-
tions
• Cooler overload
• Maintain limits
Reduced gas
flow rate
• Gas circuit
clogged
• Remove and clean
heat exchanger
• if necessary, re-
place filter ele-
ment
• Condensate out-
put iced over
• Send in unit
Excess tem-
perature
• Operating point
not yet reached
• Wait (max. 20 min)
• Cooling output
too low despite
the cooler run-
ning
• Ensure the vents
are not covered
(heat buildup)
• Flow rate too
high/dew point
too high/gas tem-
perature too high
• Maintain limits /
install pre-separ-
ator
• Built-in fan
stopped
• Check and replace
if necessary
Temperature
low
• Control unit fail-
ure
• Send in cooler
No cooling
• Compressor
doesn’t start up
• Compressor PTC
not cooled down
sufficiently. Wait 5
minutes and try
again.
Fuse is trig-
gering
• Increased com-
pressor current
consumption due
to faulty com-
pressor start-up
• Compressor PTC
not cooled down
sufficiently. Wait 5
minutes and try
again.
7.2 Error messages on the display
If an error occurs, the display will read "Err". Press the "
"
button to show the error number(s).
Error messages will appear until the unit has been restarted
or the error is cleared using the "Func" button. It can only be
cleared if the cause for the error has been corrected.
Causes / Action: The following is a list of the most common
causes and actions for the respective error. If the actions listed
do not resolve the problem, please contact Service.
Problem /
Malfunction
Possible cause
Action
No display
• No voltage
• Loose con-
necting cable
• Display de-
fective
• Check the sup-
ply cable
• Check fuse
• Check connec-
tions
(perman-
ent)
D1.02
(The software ver-
sion for the dis-
play will appear).
• Not commu-
nicating with
the controller
• Check connec-
tions
Error
• An error has
occurred
• Read the error
number as de-
scribed above
Error 01
• Controller
malfunction
• Clear error
(temporary
fault)
• Disconnect
from power for
approx. 5 s
• Contact service
Error 03
• Microcontrol-
ler fault /
MCP2
• Contact service
Error 04
• EEPROM error
• Contact service
Error 40
• General error
temperature
sensor 1
• Sensor possibly
defective
Error 41
• Low temper-
ature / short-
circuit tem-
perature
sensor 1
• Check temper-
ature sensor
connection
Error 42
• Excess tem-
perature /
short-circuit
temperature
sensor 1
• Check temper-
ature sensor
connection
Error 43
• Measurement
fluctuation
temperature
sensor 1
• Check temper-
ature sensor
connection
15
Bühler Technologies GmbH
BX450022 ◦ 12/2018
