9-2
9.2 Troubleshooting
Table 9-2(a) Troubleshooting
Alarm
code
Description Probable
cause
Remedy
E001 Receiver tank full
Water flows into the tank continuously because
the Solenoid Valve Operation setting is set to
“Man. Open.”
Set the Solenoid Valve Operation to “Auto.”
Water does not stop running because of a failure
in the ball tap.
Check and/or replace the ball tap.
Water does not stop running because of a failure
in the inflow solenoid valve.
Check and/or replace the inflow solenoid
valve.
Water has seeped inside the electrode holder.
Check and/or correct the electrode holder
section.
Although water level has reached the point of
closing the solenoid valve, water still comes out
because an incorrect setting of the Solenoid Valve
Type (P103) causes the solenoid valve to open.
Correctly set the Solenoid Valve Type to the
type of the inflow solenoid valve in use.
E002
E003
Receiver tank low
Dry-run
Prevention
The Tank Selection setting is set to a water tank
not in use (to which no electrodes are connected
or for which cleaning work is in progress).
Set the Tank Selection to the water tank to be
used.
Water does not flow into the receiver tank
because the Solenoid Valve Operation setting is
set to “Man. Close.”
Set the Solenoid Valve Operation to “Auto.”
Water does not come out because of a failure in
the ball tap.
Check and/or replace the ball tap.
Water does not come out because of a failure in
the inflow solenoid valve.
Check and/or replace the inflow solenoid
valve.
Although water level has reached the point of
opening the solenoid valve, no water comes out
because an incorrect setting of the Solenoid Valve
Type (P103) causes the solenoid valve to close.
Correctly set the Solenoid Valve Type to the
type of the inflow solenoid valve in use.
Poor connection or disconnection of the electrode
wiring
Check and/or correct the electrode wiring.
Poor connection of the electrode holder section
Check and/or correct the electrode holder
section.
E004 Electrode
failure
Wrong electrode wiring
Check and/or correct the electrode wiring.
Poor connection or disconnection of the electrode
wiring
Check and/or correct the electrode wiring.
E006
Start frequency
failure
Because of damage to the diaphragm of the
pressure tank, its internal pressure cannot be
maintained when no pumps are running, thus
increasing the start frequency of the pump(s).
It is necessary to check and/or replace the
pressure tank. Contact us or the service
provider.
Water usage continues at low flow rate because of
water leakage or the user’s failure to close the
faucet.
Check and/or replace the piping.
Additionally install a pressure tank with a large
capacity.
A low flow rate is constantly detected because of
malfunction of the flow switch.
It is necessary to check and/or replace the
flow switch. Contact us or the service
company.
E051
Pressure
transmitter failure
The pressure transmitter is broken.
It is necessary to check and/or replace the
pressure transmitter. Contact us or the service
company.
The piping is frozen.
Protect the piping with a heat insulating
material, or contact us or the service provider
to make modifications for the freeze-proof
specifications.
E070
Control panel
high temperature
The cooling fan of the outdoor cover is broken.
Check the cooling fan. If it is broken, replace
it.
The ambient temperature is too high.
The unit is exposed to direct sunlight.
Improve the installation environment.
E080 EEPROM error
The memory device of the control board is broken.
It is necessary to check and/or replace the
control board. Contact us or the service
company.
