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4.2 Trouble shooting guide
Please observe: If your reverse osmosis is not performing as it should, please run through the alarm messages below.
In the event of a fault, repair work may only be carried out by an expert (SERVICE technician).
Alarm / malfunction list: Possible reasons: Acknowledgement:
FAULT 1
4: “FAULT 1: Pump defective“
s¬0UMP¬DOESN@T¬START D Call SERVICE team
FAULT 2
5: “FAULT 2: Pump defective“
s¬0UMP¬DOESN@T¬START
D Call SERVICE team
D Replacement of pump motor
FAULT 3
6: “FAULT 3: Pressure sensor
permeate“
s¬4HE¬PUMPS¬PRESSURE¬SENSOR¬IS¬DEFECTIVE D Call SERVICE team
FAULT 4
7: “FAULT 4: Pressure sensor
pump“
s¬0RESSURE¬SENSOR¬DEFECTIVE
s¬#ABLE¬CONNECTION¬DEFECTIVE¬OR¬
improper (wire rupture)
D Call SERVICE team
D Replacement of pressure sensor
FAULT 5
8: “FAULT 5: Temperature sensor“
s¬4EMPERATURE¬SENSOR¬DEFECTIVE
D Call SERVICE team
D Replacement of temperature sensor
CONDUCTIVITY/TDS
> LIMIT
9: “FAULT 6: CONDUCTIVITY
is too high > xx
μS/cm“
s¬0RESETTED¬ALARM¬LIMIT¬HAS¬BEEN¬EXCEEDED
s¬&LUCTUATING¬FEED¬WATER¬QUALITY¬
s¬High water temperatures
s¬2/¬MEMBRANES¬DEFECTIVE
D Check of alarm limit value - Check of
alarm limit value - If water bleeding was
activated either increase the limit value
of conductivity or shut down the blending.
D Please check the pre-treatment of the
feed water.
D Replacement of the RO membranes
D Call SERVICE team
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