Error Messages In The Display - Bühler technologies RC 1.1 Notice De Montage

RC 1.1, RC 1.2+
Fuse is trig- • Increased com-
gering pressor current
consumption
due to faulty
compressor
start-up
Modbus com- • Bus connection
munication fault
error
• Line termination
fault
• Check bus con-
figuration

7.1.1 Error Messages in 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 / Possible cause
malfunction
No display • No voltage
• Loose connect-
ing cable
• Display defect-
ive
D1.02 (The software ver-
sion for the display
(perman-
will appear).
ent)
• Not commu-
nicating with
the controller
Error • An error has
occurred
Error • Controller
01 malfunction
Error • Microcontrol-
03 ler fault /
MCP2
Error • EEPROM error
04
Error • Moisture de-
22 tector 1 cable
break
Error • Moisture de-
32 tector 2 cable
break
18 Bühler Technologies GmbH
• Compressor PTC not
cooled down suffi-
ciently. Wait 5
minutes and try
again.
• Check electrical con-
nections
• Check bus line
• Check/reset config-
urator
"
Action
• Check the supply
cable
• Check fuse
• Check connec-
tions
• Check connec-
tions
• Read the error
number as de-
scribed above
• Clear error (tem-
porary fault)
• Disconnect from
power for ap-
prox. 5 s
• Contact service
• Contact service
• Contact service
• Check moisture
detector line
• Check moisture
detector
• Check moisture
detector line
• Check moisture
detector
Error • General error
40 temperature
sensor 1
Error • Low temperat-
41 ure / short-cir-
cuit temperat-
ure sensor 1
Error • Excess temper-
42 ature / short-
circuit temper-
ature sensor 1
Error • Measurement
43 fluctuation
temperature
sensor 1
Status text Possible cause
H2o.1 • Moisture
alarm mois-
ture detector 1
H2o.2 • Moisture
alarm mois-
ture detector 2
init • Initialisation
phase
PuMP • Pumps deac-
tivated
• Excess/low
temperature
(Flashing)
• Sensor possibly
defective
• Check temperat-
ure sensor con-
nection
• Check temperat-
ure sensor con-
nection
• Check temperat-
ure sensor con-
nection
Action
• Dry
• Check condens-
ate trap
• Dry
• Check condens-
ate trap
• Wait
• Reactive pumps
via menu
• see chapter
"Troubleshoot-
ing"
BX450028 ◦ 09/2021