
Reverse osmosis system
GENO-OSMO-X
Order no.
134 750 927-inter Edited by: phar/mrie G:\BA-750927-inter_134_GENO-OSMO_X.docx
67
Continuation table G-2: Troubleshooting
This is what you observe This is the cause
This is what to do
E120:
Error micro-switch
Outside of the regeneration,
the signal of micro-switch S2
is pending at terminal 14.
Check wiring and function of the
switch and notify Grünbeck’s
technical customer service/au-
thorised service company, if
necessary.
E124:
Error motor current
Monitoring of the step motor
current has reacted.
If the error occurs again within 5
minutes after it was acknowl-
edged, notify Grünbeck’s tech-
nical customer service/ author-
ised service company.
E127:
Bus error RO1 - DEA1
Communication with data line
RS485 to control unit of the
pressure booster installed
downstream is interrupted.
Check the lines for proper con-
nection. Check whether the ter-
minating resistors (DIP
switches) are set properly.
E150:
Stage 2 Error OSMO-X
Control unit defective.
Notify Grünbeck’s technical cus-
tomer service/authorised service
company.
E151:
Stage 2 Error power fail-
ure
Power failure has occurred,
system is not set to automatic
restart.
Whether this affects other
subsystems as well, has to be
checked on site.
Ensure reliable power supply of
GENO-OSMO-X
Refer to chapter F-4.1:
If necessary, reprogram the pa-
rameter "automatic system re-
start".
E152:
Stage 2 EEPROM
EEPROM defective.
Notify Grünbeck’s technical cus-
tomer service/authorised service
company.
E153:
Stage 2 Comm. error
stage 1
Communication with data line
RS485 to control unit installed
upstream/downstream is in-
terrupted.
Check the lines for proper con-
nection. Check whether the ter-
minating resistors (DIP
switches) are set properly.
E154:
Comm. error stage 2
E155
Stage 2 sensor error pres-
sure
Malfunction at the sensor sig-
nal 4-20 mA of the pressure
sensor.
Notify Grünbeck’s technical cus-
tomer service/authorised service
company.
E156
Stage 2 sensor error level
probe
Malfunction at the sensor sig-
nal 4-20 mA of the permeate
tank’s level probe.
Notify Grünbeck’s technical cus-
tomer service/authorised service
company.
E157
Stage 2 sensor error
RO1CQ2
Malfunction at the sensor sig-
nal LF/PT100 of the conduc-
tivity probe.
Notify Grünbeck’s technical cus-
tomer service/authorised service
company.
Summary of Contents for GENO-OSMO-X
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