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9. TROUBLESHOOTING
Troubleshooting Guide
Symptom
Possible causes
Possible measures
Displays are blank
when control panel is
turned on
●
ELB is OFF (
○
)
Turn ON (|) ELB on the right side of
unit.
●
Power supply failure
Check the power supply capacity.
WG251: 1
φ
115 V AC
WG1001: 1
φ
220 V AC
●
ELB failure
Replace relevant parts
No water is supplied
●
Water tap is not sufficiently open.
Open the tap.
●
Water is cut off or pressure is low.
Check whether the tap is turned on.
●
Water supply hose is not properly
connected
Reconnect water supply hose (P.28)
●
Raw water supply solenoid valve
failure
Replace relevant parts
●
Boiler water supply solenoid valve
failure
Replace relevant parts
●
Float switch failure
Replace relevant parts
●
Pre-treatment cartridge is clogged
Check whether the consumables
have been replaced at regular
intervals.
●
Boiler drain solenoid valve is open
Close the drain cock.
Water supply will not
stop
●
Raw water supply solenoid valve
failure
Replace relevant parts
●
Float switch failure
Replace relevant parts
Water collection of ion
exchanged water will
not stop.
●
Failure in solenoid valve for ion
exchanged water collection
Replace relevant parts
Distilled water
collection will not stop.
●
Failure in solenoid valve for distilled
water collection
Replace relevant parts
Heater does not turn on
●
Float switch failure
Replace relevant parts
●
Heater interruption or disconnection
Replace relevant parts
Cooling water does not
flow
●
Failure in solenoid valve for cooling
water
Replace relevant parts
Initial distilled water is
not discharged.
●
Failure in solenoid valve for initial
distilled water drainage
Replace relevant parts
Distilled water is not
accumulated.
●
Failure in solenoid valve for initial
distilled water drainage
Replace relevant parts
Distillation will not stop
●
Float switch failure
Replace relevant parts
Cannot collect water
●
Failure in solenoid valve for ion
exchanged water collection/distilled
water collection
Replace relevant parts
●
Pre-treatment cartridge, ion-exchange
resin cartridge or membrane filter is
clogged
Check whether the consumables
have been replaced at regular
intervals.
●
Piping connection failure
Check the hose connection. (P.28)
Poor water quality
●
Ion-exchange resin cartridge is
degraded
Dispense about 5 L of water.
If not improved, replace ion-exchange
resin cartridge.
●
Remaining air in ion-exchange resin
cartridge
●
Ion-exchange resin cartridge has not
been used for a long period of time
●
Distilled water is stored in distilled
water tank for an extended period.
Drain distilled water tank and produce
distilled water again.