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9. TROUBLESHOOTING
Error Indications and Descriptions
Troubleshooting guide
When any of these error messages appears on the screen, confirm the error message and its detail.
Then turn "OFF (
○
)" ELB immediately and close the tap. When an error message is displayed, replacing
consumable(s) or unit inspection is required. Contact original dealer of purchase or Yamato sales office
for assistance.
Please inform of the error message appeared on the screen and serial number of main unit.
Symptom
Error message
Possible causes
Possible measures
Ion-exchange
resin (S)
replacement
alarm
Dio Wtr Qlty Err
Rplc Rsn Ctrdg S
When the quality of ion
exchanged water
becomes over 1 × 10
-4
S/m (the alarm will be
automatically released
when replacement
completes)
Replace ion-exchange resin
cartridge. (P.23)
After replacement completes,
press and hold the reset
switch on the back of front
door. Alarm display will reset
accompanying confirmation
tone.
(P.44)
Pre-treatment
cartridge
replacement
alarm
Rplce Pre-Crtrdg
When the accumulated
power-on time has
reached 6 months
Replace pre-treatment
cartridge. (P.24)
After replacement completes,
press and hold the reset
switch on the back of front
door. Alarm display will reset
accompanying confirmation
tone.
(P.44)
Distilled water
membrane filter
replacement
alarm
Rplc Dstl Mb Flt
When the accumulated
power-on time has
reached 3 months
Replace membrane filter for
distilled water. (P.25)
After replacement completes,
press and hold the reset
switch on the back of front
door. Alarm display will reset
accompanying confirmation
tone.
(P.44)
Ion-exchanged
water membrane
filter
replacement
alarm
Rplc Ion Mb Fltr
When the accumulated
power-on time has
reached 3 months
Replace membrane filter.
(P.25)
After replacement completes,
press and hold the reset
switch on the back of front
door. Alarm display will reset
accompanying confirmation
tone.
(P.44)
Water cut-off
alarm
Alert: Wtr Loss
Chk Flw&Prssr
When the raw water is
cut off or the raw water
pressure becomes 0.5 ×
100 kPa or less (When
the raw water pressure
returns to normal, unit
will automatically resume
operation).
Ensure that the water is not
suspended, and turn on the
tap further. If problem
persists, call for service.