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Chapter 7 Troubleshooting
7.1 No display
Description
Solution
No power supply for power outlet
Confirm power outlet is normal
Electrical outlet loose
Change electrical outlet
System power cord is not properly installed
Make sure the power cord is plugged into the
electrical outlet of main unit
system power is turned off
Turn on the power switch on the back of the
main unit
Power cord is damaged
Change the power cord
Fuse burned
Change fuse
Internal component failure
Contact Technical service
7.2 Making RO water is too low
Description
Solution
No feed water supply, warning for no water
confirm the patency of external water supply
Pre-filter blocked, warning for no water
Rinse the filter and replace it when necessary
Feed water pressure is too low, indicating no
water warning
Needs another pressure pump
water supply connection error, indicating no
water warning
Make sure that feed water pipe connecting to
the FEED connector of the main unit.
Pretreatment blocked
Replace the pretreatment module
There are impurities on the RO surface
Press “Flush/▼”button to flush RO
RO blocked
Replace the RO module
Pure water outlet connection error
Verify that the RO OUT of main unit connected
with RO IN of water tank
Water temperature is too low
Add the preheat system
Internal component failure
Contact Technical service
7.3 The pure water conductivity of Smart-NE is too high
Description
solution
Feed water conductivity is high
Choose RO-2 module
RO exhausted, showing RO or DS alarm
Replace the RO membrane
New reverse osmosis membrane with
remaining protection liquid.
Press “Flush/▼”button to rinse the membrane
Internal component failure
Contact Technical service
7.4 Ultra-pure water resistivity is too low
Description
Solution
Purification cartridge is exhausted
Replace the Purification cartridge
The unit display conductivity value
Switch the unit mode to resistivity
Purification cartridge installation error
Make sure the purification cartridge
installation OK.
Disinfectant is not fully discharged after
disinfection
Discharge amount of the ultra-pure water
Internal component failure
Contact Technical service
7.5 The flow rate of ultra-pure water is too low
Description
Solution
System is in recycling mode
Wait for the producing water reaching preset
quality
Water tank level is less than 20%
Wait for pure water level increase in water tank
Ultra-pure water resistivity is too low
Adjust the ultra-pure water quality to the
requirement
Ultra-pure water resistivity value is setting too
high
Adjust the ultra-pure water quality to the
requirement
Supply pipe connection error
Confirm the RO OUT of water tank connecting
to the RO IN of main unit
Internal component failure
Contact Technical service