Erie water treatment IQsoft User manual

© 2018 erie water treatment TM-EN-IQ-CS-Rev2018.06
Technical Manual
WATER SOFTENER
Models:
IQ-CS-

TABLE OF CONTENT
Page 2
Table of content.......................................................................................................................Page 2
Warning & Safety instructions.................................................................................................Page 3
Operating conditions & Requirements....................................................................................Page 4
Installation ...............................................................................................................................Page 5
Commissioning.........................................................................................................................Page 6
Electronic control panel...........................................................................................................Page 7
Maintenance ............................................................................................................................Page 12
Hydraulic flow diagrams ..........................................................................................................Page 13
Troubleshooting.......................................................................................................................Page 14
Electrical wiring diagram..........................................................................................................Page 16
Default configuration parameter settings ...............................................................................Page 17
Exploded view - System ...........................................................................................................Page 18
Exploded view - Cover assembly..............................................................................................Page 20
Exploded view - Valve body assembly .....................................................................................Page 22
Exploded view - Valve head assembly .....................................................................................Page 24
Technical data ..........................................................................................................................Page 25

WARNING & SAFETY INSTRUCTIONS
Page 3
•Before you begin the installation of the appliance, we advise you read
and carefully follow the instructions contained in this manual. It contains
important information about safety, installation, use and maintenance of
the product. The actual system that you have received, may differ from
the pictures/illustrations/descriptions in this Technical Manual.
•Failure to follow the instructions could cause personal injury or damage
to the appliance or property. Only when installed, commissioned and
serviced correctly, the appliance will offer you many years of trouble-free
operation.
•The appliance is intended to 'soften' the water, meaning it will remove
hardness minerals; it will not necessarily remove other contaminants
present in the water. The appliance will not purify polluted water or make
it safe to drink!
•Installation of the appliance should only be undertaken by a competent
person, aware of the local codes in force. All plumbing and electrical
connections must be done in accordance with local codes.
•Before setting up the appliance, make sure to check it for any externally
visible damage; do not install or use when damaged.
•Use a hand truck to transport the appliance. To prevent accident or
injury, do not hoist the appliance over your shoulder. Do not lay the
appliance on its side.
•Keep this Technical Manual in a safe place and ensure that new users are
familiar with the content.
•The appliance is designed and manufactured in accordance with current
safety requirements and regulations. Incorrect repairs can result in
unforeseen danger for the user, for which the manufacturer cannot be
held responsible. Therefore repairs should only be undertaken by a
competent technician, familiar and trained for this product.
•In respect of the environment, the appliance should be disposed of in
accordance with Waste Electrical and Electronic Equipment
requirements. Refer to national/local laws and codes for correct recycling
of the appliance.

OPERATING CONDITIONS & REQUIREMENTS
Page 4
•OPERATING PRESSURE MIN-MAX: 1,4-8,3 bar / 20-120 psi
−this appliance is configured to perform optimally at an
operating pressure of 3 bar (45 psi) ±½ bar (7 psi); in case of a
lower or higher operating pressure the performance may be
affected negatively!
−check water pressure regularly; it may fluctuate severely
depending on the time of day, the day of the week or even the
season of the year.
−take into account that night time water pressure may be
considerably higher than day time water pressure.
−install a pressure reducer ahead of the appliance if necessary.
−install a pressure booster, if it is likely that water pressure may
drop below the minimum.
•OPERATING TEMPERATURE MIN-MAX: 2-48 °C / 35-120 °F
−do not install the appliance in an environment where high
ambient temperatures (e.g. unvented boiler house) or freezing
temperatures can occur.
−the appliance cannot be exposed to outdoor elements, such as
direct sunlight or atmospheric precipitation.
−do not install the appliance too close to a water heater; keep at
least 3 m (10 ft) of piping between the outlet of the appliance
and the inlet of the water heater; water heaters can sometimes
transmit heat back down the cold pipe into the appliance;
always install a check valve at the outlet of the appliance.
•ELECTRICAL CONNECTION:
−the appliance only works on 24VDC; always use it in
combination with the supplied transformer.
−make sure to plug the transformer into a power outlet, which is
installed in a dry location, with the proper rating and over-
current protection.

INSTALLATION
Page 5
PREPARATION BRINE CABINET
Picture 1&10
To facilitate the installation, you may want to remove the salt
lid and main cover from the brine cabinet.
INLET & OUTLET
In case of high concentration of impurities in the inlet
water, we recommend the installation of a sediment filter,
ahead of the appliance.
We strongly recommend the use of flexible hoses to
connect the appliance to the water distribution system; use
hoses with a large diameter in order to limit the pressure
loss.
If the appliance is not equipped with the included factory
bypass, we strongly recommend to install a 3-valve bypass
system (not included with this product!) to isolate the
appliance from the water distribution system in case of
repairs. It allows to turn off the water to the appliance, while
maintaining (untreated) water supply to the user.
WITH FACTORY BYPASS
Picture 2
= mains water supply (untreated water)
= inlet of appliance (untreated water)
= outlet of appliance (treated water)
= house/application (treated water)
1. Screw the factory bypass onto the elbow connections of
the appliance (&); make sure to install the gasket
seals. Tighten the nuts firmly by hand.
2. Screw the connection kit with nuts onto the factory
bypass (&); make sure to install the gasket seals.
Tighten the nuts firmly by hand.
3. Connect the mains water supply to the adaptor on the
inlet port of the factory bypass ().
4. Connect the house/application to the adaptor on the
outlet port of the factory bypass ().
WITH 3-VALVE BYPASS SYSTEM (not included)
Picture 3
= inlet of appliance (untreated water)
= outlet of appliance (treated water)
1. Install the 3-valve bypass system.
2. Screw the connection kit with nuts onto the elbow
connections of the appliance (&); make sure to install
the gasket seals. Tighten the nuts firmly by hand.
3. Connect the 3-valve bypass system to the adaptors on the
in () and out () elbow connections
4. Connect the mains water supply to the inlet of the 3-valve
bypass system.
5. Connect the house/application to the outlet of the 3-valve
bypass system.
DRAIN
We recommend the use of a stand pipe with P-trap.
To prevent backflow from the sewerage system into the
appliance, always install and use the included drain adaptor
with air gap and double hose barb, to connect the drain
hoses to the sewerage system.
Always use separate drain hoses for the control valve
(discharge of rinse water) and the brine cabinet's overflow.
Lay-out the drain hoses in such a way that pressure loss
is minimized; avoid kinks and unnecessary elevations.
Make sure that the sewerage system is suitable for the
rinse water flow rate of the appliance.
Picture 4
1. Install the drain adaptor to the sewerage system; it fits
over a 32 mm pipe or inside a 40 mm pipe adaptor. Ensure
a permanent and watertight connection.
2. Connect a 13 mm hose to the drain solenoid of the control
valve (); secure it by means of a clamp.
3. Run the drain hose to the drain adaptor and connect it to
one of the hose barbs; secure it by means of a clamp. This
drain line operates under pressure, so it may be installed
higher than the appliance.
4. Connect a 13 mm hose to the brine cabinet overflow
elbow; secure it by means of a clamp.
5. Run the drain hose to the drain adaptor and connect it to
the other hose barb; secure it by means of a clamp. This
drain line does NOT operate under pressure, so it may
NOT be installed higher than the appliance.

COMMISSIONING
Page 6
ELECTRICAL
Picture 5
1. Plug the transformers output lead into the socket on the
appliances power cord; secure it by means of the
TwistLock clamp.
2. Plug the transformer into an electrical outlet.
PRESSURIZING
1. Make sure the bypass system is in 'bypass' position.
2. Make sure the electronic controller of the appliance is in
service mode.
3. Open the mains water supply.
4. Open a cold treated water faucet nearby the appliance
and let the water run for a few minutes until all air is
purged and all foreign material that may have resulted
from the installation is washed out; close the tap.
5. Gently pressurize the appliance, by putting it into service:
•factory bypass:
1. open the 'outlet' valve;
2. slowly open the 'inlet' valve.
•3-valve bypass:
1. close the 'bypass' valve;
2. open the 'outlet' valve;
3. slowly open the 'inlet' valve.
6. After 2-3 minutes, open a cold treated water faucet
nearby the appliance and let the water run for a few
minutes until all air is purged from the installation and the
resin bed is rinsed (it is normal for the rinse water to show
some discoloration!); close the tap.
7. Check the appliance and all hydraulic connections for
leaks.
After the first regenerations of the appliance, some
slight discoloration of the treated water might occur. This is
totally harmless and will disappear rapidly!
BRINE CABINET
1. Add water conditioner salt to the brine cabinet.
ELECTRONIC CONTROL PANEL
1. Program the electronic controller.
ADJUSTMENT RESIDUAL HARDNESS
In practice the residual hardness is influenced by the
inlet pressure, flow rate and hardness of the incoming
untreated water. When adjusting the residual hardness,
make sure these conditions are similar to the actual
operating conditions.
Picture 6
1. Adjust the residual hardness of the water that leaves the
softener, by means of the adjusting screw, incorporated
in the ‘outlet’ valve of the factory bypass:
•to raise the residual hardness: turn the screw counter
clockwise.
•to reduce the residual hardness: turn the screw
clockwise.
2. Measure the residual water hardness with a water
hardness test kit; readjust if necessary.
PERFORM REGENERATION
1. Manually initiate a regeneration, by pressing the scroll 
button repeatedly until the display shows:
2. Leave the appliance in this position; the countdown timer
will countdown to 0 sec and start a regeneration.
Regen in 10 sec

ELECTRONIC CONTROL PANEL
Page 7
Picture 7
symbol
button
function

SCROLL
to advance to the next
parameter

UP
to increase the value of the
parameter

DOWN
to decrease the value of the
parameter
POWER-UP
After power-up the display will show the 5-digit Part Number
of the electronic board and the installed software version.
POWER FAILURE
In the event of a power failure, the program will remain
stored in the NOVRAM® during an undefined period, while an
incorporated SuperCap will maintain the correct time of day
during a period of several hours; consequently, in case of
prolonged power failure, the time of day might not be
maintained; if this happens, the time of day will be reset to
8:00 when the power supply is re-established, while the
indication will flash, indicating that the time of day needs to
be set.
When the power failure occurs during the execution of an
automatic regeneration, the appliance will immediately
return to the service mode; when the power supply is re-
established, the appliance will resume the regeneration.
TIMER FAILURE
In the event of a timer failure, the display will show the
message:
The buzzer, if enabled (see Basic Settings), will beep
continuously. If powering off/on the appliance doesn’t solve
this problem, professional service is required.
MAINTENANCE REMINDER
Once the maintenance interval is reached, the following will
happen:
1. the display will intermittently show the message:
2. the buzzer, if enabled (see Basic Settings), will beep 3
times every 5 minutes.
While the appliance will continue to operate normally, it is
recommended to have preventive maintenance performed
by a professional.
To reset the maintenance reminder, simply access the
configuration parameters programming mode.
SERVICE MODE
In service mode the display shows:
•on 1st line: the time of day and the remaining capacity;
•on 2nd line: alternately every 5 seconds:
-the total volume of water used since commissioning;
-the instantaneous flow rate;
REGENERATION MODE
In regeneration mode the display shows the actual
regeneration cycle and, where relevant, the total remaining
regeneration time and remaining cycle time:
The appliance can be reset to service mode at any time by
pressing the scroll button, as such manually advancing it
through the regeneration cycles.
CHECKING THE FLOW METER
In case of water usage, the remaining capacity counter in the
service display will count back per unit, i.e. per litre. This way
the correct functioning of the water meter can be verified.
MANUAL REGENERATION
It is possible to manually initiate an immediate regeneration
or a delayed regeneration (at the preprogrammed time of
regeneration).
1. Press the scroll button repeatedly until the display
shows:
•If the control panel is left in this position, the
countdown timer will countdown to 0 sec and start an
immediate regeneration.
•To cancel this mode, press the scroll button before
the countdown timer has reached 0 sec; the display
will show:
•If the control panel is left in this position, a delayed
regeneration will be started at the indicated
preprogrammed time of regeneration.
Service Required
BRINE FILL
REGEN PENDING
Rgn:XXX CycY:ZZZ
Regen in 10 sec
Regen @ 2:00
8:01 1000L –
Maintenance Now
8:01 1000L –
TotVol: 1234567L

ELECTRONIC CONTROL PANEL
Page 8
•To cancel this mode, press the scroll button
repeatedly; the control panel will return to the service
mode.
SALT LEVEL ALARM
The electronic control panel is equipped with a salt level
alarm, that will periodically remind the user to check the salt
level inside the brine cabinet and to refill it with water
conditioner salt if necessary. When the salt level alarm is
triggered, the following will happen:
1. the backlight of the display will flash on/off;
2. the buzzer, if enabled (see Basic Settings), will beep 3
times every hour;
3. the display will show:
After refilling the brine cabinet, simply push the down 
button to reset the salt level alarm. If any other button is
pushed, the salt level alarm will be cancelled, but not reset,
meaning it will be activated again after the next regeneration!
If the brine cabinet is refilled by the user with water
conditioner salt, before the salt level alarm is activated, it is
possible to reset the salt level alarm.
1. Press the scroll button; the display will show:
•Press the down button to reset the salt level alarm.
HOLIDAY MODE
It is possible to put the appliance in holiday mode; this will
prevent automatic regeneration from taking place, yet will
ensure the appliance is automatically regenerated at the end
of the holiday cycle.
1. Press the scroll button repeatedly until the display
shows:
•Press the up or down button to activate the
holiday mode by setting the number of full days away
from home,or deactivate the holiday mode (OFF).
Once the control panel is back in service mode, the display
will show:
The holiday mode is automatically cancelled when a
regeneration is manually initiated!
PROGRAMMING INSTRUCTIONS -
BASIC SETTINGS
Before entering the programming mode, make sure that
the appliance is in service mode.
In case no button is pressed in a period of 5 min, the
control panel will automatically return to the service mode;
any changes made will NOT be saved!
1. Press the scroll button and hold it for 2 sec until the
display shows:
•Press the up or down button to set the
language.
2. Press the scroll button again; the display will show:
•Press the up or down button to set the time of
day.
3. Press the scroll button again; the display will show:
•Press the up or down button to set the unit of
measure for water hardness. Make sure it is identical
to the unit of measure of the water hardness test kit
or water analysis report that is used to determine the
hardness of the incoming untreated water!
4. Press the scroll button again; the display will show:
•Press the up or down button to set the hardness
of the incoming untreated water.
5. Press the scroll button again; the display will show:
•Press the up or down button to enable the
buzzer by setting the sound level, or disable the buzzer
(OFF).
6. Press the scroll button again; the display will show:
•Press the up or down button to save the settings
into the NOVRAM® and exit the programming mode.
Check salt level
To reset push 
Salt Added?
To reset push 
Holiday: OFF
8:01 Holiday
TotVol: 1234567L
Language:English
Set time: 8:01
Set hardn: XX °f
HardUnit: °f
Exit
Buzzer: 2

ELECTRONIC CONTROL PANEL
Page 9
PROGRAMMING INSTRUCTIONS -
CONFIGURATION PARAMETERS
All configuration parameters on this appliance have
been pre-programmed in the factory, to offer optimal
performance in a wide range of applications and situations.
See table at the end of this manual for default configuration
parameter settings.
Before entering the programming mode, make sure that
the appliance is in service mode.
In case no button is pressed in a period of 5 min, the
control panel will automatically return to the service mode;
any changes made will NOT be saved!
1. Press the scroll button and hold it for 6 sec until the
display shows:
2. Within 10 sec, press the up button; the display will
show:
•Press the up or down button to set the units of
measure (Metric or US).
3. Press the scroll button again; the display will show:
•Press the up or down button to activate the
maintenance reminder function by setting the
maintenance interval, or deactivate the maintenance
reminder function.
4. Press the scroll button again; the display will show:
•Press the up or down button to set the
exchange capacity per litre of resin.
5. Press the scroll button again; the display will show:
•Press the up or down button to set the age
correction factor (%/year) to compensate for capacity
loss of the resin due to aging.
6. Press the scroll button again; the display will show:
•Press the up or down button to set the volume
of resin.
7. Press the scroll button again; the display will show:
•Press the up or down button to set the number
of days between regenerations.
8. Press the scroll button again; the display will show:
•Press the up or down button to set the length
of the regeneration cycle.
•Press the scroll button again to advance to the next
regeneration cycle.
Eco
Refill
Cycle 1
Brine preparation
Cycle 2
Backwash
Cycle 3
Brine draw/slow rinse
Cycle 4
Fast rinse
Cycle 5
9. Press the scroll button again; the display will show:
•Press the up or down button to set the
regeneration mode:
−Dlyd/Immd: when the remaining capacity equals
the reserve capacity, a delayed regeneration is
started at the programmed time of regeneration;
however when the remaining capacity equals 0
before the programmed time of regeneration is
reached, an immediate regeneration is started.
−Immediate: when the remaining capacity equals
0, an immediate regeneration is started.
−Delayed: when the remaining capacity equals the
reserve capacity, a delayed regeneration is
started.
10. Press the scroll button again; the display will show
(only when the regeneration mode was set to 'Delayed' or
'Dlyd/Immd'):
•Press the up or down button to set the time of
regeneration.
11. Press the scroll button again; the display will show:
•Press the up or down button to activate or
deactivate the salt level alarm function.
Cycle 1: XXX sec
System Check
Regen @ 2:00
Units:Metric
Resin:XXX liters
Age corr.: 1.0%
Override: 7 days
Regen:Dlyd/Immd
Salt alarm: ON
ExCap:5.1°f M3/L
MaintInt: 24mths

ELECTRONIC CONTROL PANEL
Page 10
12. Press the scroll button again; the display will show:
•Press the up or down button to set the salt level
alarm interval (= number of regens after which the salt
level alarm is activated).
13. Press the scroll button again; the display will show
(only when the regeneration mode was set to 'Dlyd' or
'Dlyd/Immd'):
•Press the up or down button to set the reserve
capacity:
−Variable: the reserve capacity is calculated
automatically, based on the registered daily water
usage.
−Fxd: press the scroll button again and press the
up or down button to set the reserve
capacity to a fixed amount.
14. Press the scroll button again; the display will show:
•Press the up or down button to set the function
of auxilliary contact 1 and auxiliary contact 2:
−Regen: aux. contact is powered during entire
regeneration (does not include refill and brine
preparation cycles!).
−Chlor.Cell: aux. contact is powered at start of
brine draw/slow rinse cycle. Press the scroll 
button again and press the up or down 
button to set the duration of activation of the
chlorination cell.
−Maintenance: aux. contact is powered when
maintenance reminder is triggered.
−Error: aux. contact is powered when timer failure
occurs.
−Light: aux. contact is powered when display
backlight is activated.
−Salt alarm: aux. contact is powered when salt
level alarm is triggered.
15. Press the scroll button again; the display will show:
•Press the up or down button to save the settings
into the NOVRAM® and exit the programming mode.
DIAGNOSTICS MODE
In the Diagnostics mode several operating parameters
can be consulted; particularly during a service intervention,
these parameters can be helpful to identify the cause of a
problem or malfunction.
Before entering the Diagnostics mode, make sure that
the appliance is in service mode.
In case no button is pressed in a period of 5 min, the
control panel will automatically return to the service mode!
ACCESSING THE DIAGNOSTICS MODE
1. Press the scroll button and hold it for 6 sec until the
display shows:
2. Within 10 sec, press the down button; the display will
show:
•You are now in the Diagnostics mode.
•Press the scroll button to advance to the next
diagnostics parameter.
AVAILABLE DIAGNOSTICS PARAMETERS
•Regen X days ago: number of days since last
regeneration.
•In Srvc: total number of days in service.
•# of Regens: number of regenerations since installation.
•TotVol: total volume of treated water since installation.
•LastSet: number of days since last change of configuration
parameter or hardness of incoming untreated water.
•InstFlow: instantaneous flow rate through appliance.
•AvgVol: calculated average daily water usage.
•LastRgn@: consumed capacity at last regeneration.
•Capacity: calculated capacity between regenerations.
•TotAgeCorr: total accumulated age correction factor.
•MaintCnt: current status of maintenance reminder
counter (counting up).
•MP Resets: number of resets of microprocessor.
•Memory Reset: number of corrupt memory start-ups.
•CapToUse: remaining capacity.
•Fill: length of refill cycle of last regeneration.
•Alarm count: current status of salt level alarm counter
(counting up).
•Reserve: calculated reserve capacity.
•EZ2L4d EZ2LPBr13: software version.
EXITING THE DIAGNOSTICS MODE
1. Press the scroll button repeatedly until the display
shows:
•Press the up or down button to exit the
Diagnostics mode.
Exit
Rsrv Variable
Alarm interval:
9 Regens
AUX: Regen
System Check
Regen XXdays ago
Exit

MAINTENANCE
Page 11
RECOMMENDATION
Notwithstanding the reliability of the appliance, we strongly
recommend to have it serviced and maintained on a regular
basis by a competent and duly trained technician. He will be
able to determine the appropriate maintenance interval for
the appliance, depending on your specific application and the
local operating conditions. The advantages of performing
regular maintenance are:
•regular check of the local operating conditions (water
quality, pressure, etc);
•regular control and adjustment of the settings of the
appliance, to guarantee it operates at maximum
efficiency;
•minimize the risk of unexpected break-down.
Contact your dealer or installer for more information, or visit
our website.
ROUTINE CHECKS
Regularly the user should perform a basic check to verify if the
appliance is functioning correctly, on the basis of the
following control points:
1. Check settings of electronic control panel.
2. Measure water hardness before/after appliance.
3. Check drain line from control valve; there shouldn’t be
any water flow (unless appliance is in regeneration).
4. Check drain line from brine cabinet overflow; there
shouldn’t be any water flow.
5. Check appliance and surrounding area; there shouldn’t be
any water leakages.
BYPASSING THE APPLIANCE
Occasionally it may be necessary to put the appliance
hydraulically in bypass, i.e. to isolate it from the water
distribution system; f.e.:
•in case of an urgent technical problem;
•when it is not necessary to supply treated water to the
house/application (refill swimming pool, irrigation,...).
WITH FACTORY BYPASS
Picture 8.a
SERVICE POSITION
= inlet valve to appliance is OPEN
= outlet valve from appliance is OPEN
Picture 8.b
BYPASS POSITION
= inlet valve to appliance is CLOSED
= outlet valve from appliance is CLOSED
Picture 8.c
MAINTENANCE POSITION
= inlet valve to appliance is OPEN
= outlet valve from appliance is CLOSED
WITH 3-VALVE BYPASS SYSTEM (not included)
Picture 9.a
SERVICE POSITION
= bypass valve is CLOSED
= inlet valve to appliance is OPEN
= outlet valve from appliance is OPEN
Picture 9.b
BYPASS POSITION
= bypass valve is OPEN
= inlet valve to appliance is CLOSED
= outlet valve from appliance is CLOSED
Picture 9.c
MAINTENANCE POSITION
= bypass valve is OPEN
= inlet valve to appliance is OPEN
= outlet valve from appliance is CLOSED
WATER CONDITIONER SALT
Picture 10
The appliance needs 'brine' for its periodic regenerations. This
brine solution is made from water, that is automatically dosed
in the brine cabinet by the control valve, and water
conditioner salt. The user should make sure that the brine
cabinet is always kept full of water conditioner salt. Therefore
he should periodically check the salt level inside the brine
cabinet and refill it if necessary; the salt level alarm will
remind him of this on a regular basis. The salt lid can be
removed completely to facilitate refilling. The brine cabinet is
equipped with internal LED illumination; press any button on
the control panel to activate it.
Ideally the level of water conditioner salt inside the brine
cabinet is kept between 1/3 and 2/3. A lower level of water
conditioner salt can cause insufficient brine saturation,
resulting in a loss of softening capacity. A higher level of water
conditioner salt can cause salt bridging (hard crust or salt
bridges in the brine cabinet). When you suspect salt bridging:
•carefully pound on the outside of the brine cabinet to
break loose the salt bridges;
•using a broom (or like blunt tool) carefully push the salt to
break it apart;
•pour warm water over the top of the salt to dissolve it.
APPEARANCE
To retain the appearance of the appliance, simply wipe it with
a damp cloth or clean it with a mild soap solution; never use
abrasive cleaners, ammonia or solvents.
RESIN CLEANER
Other contaminants (f.e. iron) present in the feed water can
cause the resin bed to foul up, resulting in a loss of softening
capacity. An approved resin cleaner can be used periodically
to thoroughly clean the resin bed.

MAINTENANCE
Page 12
SANITIZING THE APPLIANCE
This appliance is manufactured from premium quality
material and assembled in safe conditions to assure it is clean
and sanitary. If installed and serviced correctly, this appliance
will not infect or contaminate your water supply. However, as
in any 'device' plumbed-in in your water distribution system,
a proliferation of bacteria is possible, especially in case of
'stagnant water'. Therefore this appliance is equipped with a
'days override' feature, that will automatically rinse the resin
bed periodically, even in case of low or absence of water
usage.
If the power supply to the appliance is disconnected for a
longer period of time, we recommend, when the power
supply is re-established, to manually initiate a complete
regeneration.

HYDRAULIC FLOW DIAGRAMS
Page 13
SERVICE REFILL BRINE PREP. BRINE DRAW SLOW RINSE FAST RINSE
SERVICE REFILL
BRINE PREPARATION BRINE DRAW / SLOW RINSE
FAST RINSE

TROUBLESHOOTING
Page 14
PROBLEM
CAUSE
SOLUTION
Hard (untreated) water
to service
Open or defective bypass
Close or replace bypass
Appliance in regeneration
Wait until regeneration finishes or manually
advance regeneration to end
No salt in brine cabinet
Add salt and initiate regeneration manually
Salt bridging
Break salt bridge(s) and initiate regeneration
manually
Change in raw water hardness
Measure the hardness of the incoming untreated
water and adjust programming accordingly
Appliance fails to regenerate
Refer to problem “Appliance fails to regenerate”
Improper brine draw
Refer to problem “Improper brine draw”
Decreasing exchange capacity of resin
Clean or replace resin bed
Loss of resin
Refer to problem “Loss of resin”
Leak at riser tube
Verify that riser tube is seated correctly and is not
cracked
Residual hardness in
treated water
Bypass not completely closed
Close bypass
Appliance is overrunning its softening capacity
Measure the hardness of the incoming untreated
water and adjust programming accordingly
Verify operation of flow meter
Appliance fails to
regenerate
Faulty electrical supply
Verify electrical service (fuse, transformer,...)
Defective flow meter
Verify operation of flow meter
Defective PCB
Replace PCB
Defective drain solenoid
Replace drain solenoid
Control valve does not switch to regeneration
position
Check operating pressure; must be higher than 1,4
bar
Appliance uses too
much salt
Excessive water in brine cabinet
Refer to problem “Excessive water in brine cabinet”
System regenerates too frequently
Measure the hardness of the incoming untreated
water and adjust programming accordingly
Excessive water in
brine cabinet
Improper brine draw
Refer to problem “Improper brine draw”
Improper setting of refill cycle
Verify setting of refill cycle
Missing refill flow control
Verify that refill flow control is installed and
properly sized
Leak from control valve to brine cabinet
Clean or replace plunger and solenoid diaphragm of
refill solenoid
Check seal between brine draw check ball and brine
draw restrictor
Salt taste in treated
water
Improper setting of brine draw/slow rinse cycle
Verify setting of brine draw/slow rinse cycle
Excessive water in brine tank
Refer to problem “Excessive water in brine tank”
Improper brine draw
Refer to problem “Improper brine draw”
Loss of water pressure
Mineral or iron build-up in resin tank
Clean resin bed and control valve; increase
regeneration frequency
Plugged lower and/or upper distributor
Verify that distributors are free of debris
Crushed lower and/or upper distributor
Replace distributor(s)
Drain line from control
valve flows
continuously
Appliance in regeneration
Wait until regeneration finishes or manually
advance regeneration to end
Drain solenoid stuck in open position
Clean drain solenoid
Defective PCB
Replace PCB
Drain line from brine
cabinet overflow flows
continuously
Excessive water in brine cabinet
Refer to problem “Excessive water in brine cabinet”
Leak between control valve and pressure tank
Verify seal between control valve and pressure tank
Control valve fails to
refill brine tank
Improper setting of refill cycle
Verify setting of refill cycle
Plugged refill flow control
Clean refill flow control
Refill solenoid not opening
Verify operation of refill solenoid
Loss of resin
Lower and/or upper distributor damaged
Replace distributor(s)
Leak between riser tube and upper distributor
Verify that riser tube is seated correctly and is not
cracked

TROUBLESHOOTING
Page 15
PROBLEM
CAUSE
SOLUTION
Improper brine draw
Low operating pressure
Check operating pressure; must be higher than 1,4
bar
Plugged injector and/or brine draw restrictor
Clean injector and/or brine draw restrictor
Plugged injector filter
Clean injector filter
Restricted drain line
Verify drain line for kinks or restrictions
Restricted brine line
Verify brine line for kinks or restrictions
Leak in brine line
Verify brine line and connections for air leakage
No water in brine tank
Refer to problem “Control valve fails to refill brine
tank”
Fast rinse solenoid remains open
Verify operation of fast rinse solenoid

ELECTRICAL WIRING DIAGRAM
Page 16


= flow meter  
= power lead
= auxilliary contacts (2 x 24 VDC, max. 500mA)
AUX1 = LED light brine cabinet
AUX2 = Function can be programmed
= refill solenoid (marked ‘RF’)
= backwash solenoid (marked ‘BW’)
= drain solenoid
= key pad

DEFAULT CONFIGURATION PARAMETER SETTINGS
Page 17
Model
IQ-CS-
Resin
9
12
18
26
Units
Metric
Metric
Metric
Metric
MaintInt (mths)
24
24
24
24
Exchange capacity per liter resin (°f M3/L) (1) (2)
3,5
4,5
5,1
5,1
Age correction (%)
1.0
1.0
1.0
1.0
Resin (liters)
9
12
18
26
Override (days)
7
7
7
7
Cycle 1: REFILL (sec) (2)
198
264
396
572
Cycle 2: BRINE PREPARATION (min)
15
15
15
15
Cycle 3: BACKWASH (min)
0
0
0
0
Cycle 4: BRINE DRAW/SLOW RINSE (min)
24
24
35
53
Cycle 5: FAST RINSE (min)
2
3
4
6
Regen
Dlyd/Immd
Dlyd/Immd
Dlyd/Immd
Dlyd/Immd
Regen @
2:00
2:00
2:00
2:00
Salt alarm
ON
ON
ON
ON
Alarm interval (Regens)
8
8
7
9
Rsrv
Variable
Variable
Variable
Variable
Auxilliary contact 2
Regen
Regen
Regen
Regen
(1) When the Hardness Unit is changed in the Basic Settings, the Exchange capacity per liter resin is automatically converted to the new Hardness Unit.
(2) When the Exchange capacity per liter resin is changed, the refill cycle time needs to be adjusted accordingly.

EXPLODED VIEW - SYSTEM
Page 18

EXPLODED VIEW - SYSTEM
Page 19
(*) Recommended Spare Part
Item
PN
Description
Remark
(*)
1
PT/0913/CP
Pressure tank 9x13
9L
✓
PT/0916/CP
Pressure tank 9x16
12L
✓
PT/0922/CP
Pressure tank 9x22
18L
✓
PT/0932/CP
Pressure tank 9x32
26L
✓
2
E8000
Softening resin
✓
3
38528
Riser tube assembly with deflector
to be cut to length
✓
4
287/166
Top distributor
✓
5
568/303/6
Connection kit ¾” male
✓
6
541NCX4B/J9J
Valve body assembly
9L
✓
541NCX4B/J8J
Valve body assembly
12L, 18L, 26L
✓
7
74312
Transformer 100-230VAC –24VDC, 1,0A, EuroT plug
✓
8
Cover assembly
9
38548
Screw rivet (3x)
✓
10
39001
Salt lid
✓
11
H1015/2
Brine line polytube
to be ordered per meter
✓
12
74179
Brine line filter
✓
13
H1016/2
Brine well cap, top
14
74258
Quick-fit elbow 3/8”
✓
15
38530
Brine valve assembly 464
to be cut to length
✓
16
BW3.5/0352
Brine well
9L
BW3.5/043
Brine well
11L
BW3.5/0583
Brine well
18L
BW3.5/0837
Brine well
26L
17
H1016/4
Brine well cap, bottom
18
74143
74170
Drain hose
3 mtr
5 mtr
19
74163
Air gap with double hose barb
20
38521
Clamp, drain hose (4x)
21
39004
Dome label ‘erie water treatment’
22
39013
Dome label ‘IQsoft’
23
39009
Cabinet body, micro
9L
39010
Cabinet body, mini
11L
39011
Cabinet body, midi
18L
39012
Cabinet body, maxi
26L
24
38559
Cap
25
38532
Overflow assembly

EXPLODED VIEW - COVER ASSEMBLY
Page 20