Yamato Scientific WG221S Water Purifiers - Manual (Page 39)

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Safety Devices and Error Codes
Trouble Displays other than Error Codes/Details
Safety devise Indicator indication Cause Effect on operation Troubleshooting
Ion-exchanged water
deteriorates lower
than the standard.
See page24 about the
standard. The indicator
repeatedly alarms
. However,
operation continues
as usual.
It is not machine
trouble. Change the
old ion-exchange
resin into new one.
Distilled water
deteriorates lower
than the standard.
(When the value
reaches 10×10
-4 S/m
or more.)
The indicator
repeatedly alarms
. However,
operation continues
as usual.
Contact the seller or
Yamato Scientific’s
Technical Service
Department.
Detecting
abnormal
water quality
Water quality is too
low to measure.
The usual operation
continues. However,
the sign is
continuously shown
when you select the
electrode.
Indications of
and
are shown
at the same time.
Follow the respective
instructions.
Disconnection of the
measured electrode
without water.
The usual operation
continues. However
the sign is
continuously shown
when you select the
electrode.
This situation
sometimes occurs in
operation of this
device. However, if
this indication would
not disappear for a
long time when water
flows, request
service.
Indicator (1)
STAND BY
lamp is lit
Interruption/pressure
decrease of original
water flow.
When pressure of
water service gets
lower than 50kPa
(0.5kgf/cm
2 )
Distillation and
collection of ion-
exchanged water
stops temporarily.
Make sure if the water
pressure is normal
and the tap is open.
Distillation starts
again when the
original water
pressure is re-gained. Detecting
sensor
trouble
Lamp to
identify the
electrode
measured.
Blinking
Disconnection of the
thermistor for
temperature
compensation of the
measured electrode.
The temperature
without compensation
is shown when you
select the electrode.
It is better to request
earlier service.