1. Check that the power cable is correctly connected to the DIA and to the electric socket.
2. Check that the socket is working.
3. DIA switch must point to “I/ON”.
4. Unplug the power cable from DIA power block and check the fuses; if necessary, replace them with new ones of the same type and amperage. Repeat the procedure from point 1). If the system does not switch on…
5. Power off the DIA turning the switch to “0/OFF”, turn the manual by-pass valve to “by-pass” (to the left) and immediately call the Customer Service.

1. Turn the manual by-pass valve to “by-pass” (to the left). Leave the DIA on, so that you notice when the power comes back again.
2. When the power supply returns, turn the by-pass valve to the normal working position (to the right).

1. The deionizer must not be installed on benches, furniture or other devices.
2. The front panel and the back panel must be close.
3. If, as well as the noise, you notice that the device is overheating, power off the DIA by turning the switch to “0/OFF”, turn the manual by-pass valve to “by-pass” (to the left) and call the Customer Service

1. Have the IONtank or the pre-filters been replaced? Check the IONtank head and the pipes for possible leakages.
2. Inspect the inside of the DIA as best you can.
3. Check the outflow of the DIA: it must not be blocked or even partially obstructed; the drainpipe must not be bent or raised or at a higher level than the outflow pipe.
4. If there is a serious leak and the internal pump cannot siphon out the water, switch off the DIA and wait for the Customer Service to arrive. When the DIA is powered off, try turning the manual by-pass valve to “by-pass” (to the left); if it stops leaking, you may use the analyser; otherwise switch off the DIA as well as the raw water external in-feed tap.
5. NEVER LEAVE THE DEIONIZER ON WITH THE WATER IN-FEED TAP OPEN, ESPECIALLY WITH AB06 ALARM OR IF THERE ARE ANY WATER LEAKAGES NEAR THE DEIONIZER.

1. Switch off the deionizer and activate the manual By-pass mode.
2. In these conditions the IONtank will last for a much shorter time.
3. When you have the new consumables replace it.

1. Power off the DIA turning the switch to “0/OFF”, turn the manual By-pass valve to “by-pass” (to the left), continue to work as usual and call the Customer Service.

1. More water is being drawn off than the deionizer can produce. Contact our Technical/Commercial department.
2. The pre-filters are blocked and are limiting the production capacity of osmotic module; try replacing them.
3. Have you ever received any AH01 messages, even occasionally? Check previous warnings in the register.
4. Call the Customer Service.

1. Your average water requirement has increased.
2. The DIA has remained in by-pass status for too long (in manual or automatic mode).
3. The total salinity of the raw water has increased. To measure this value, call our technical customer service.
4. Have you received any AH02 messages, even occasionally? Check previous warnings in the register.
5. Call the Customer Service.

1. Check the connections on the IONtank.
2. Be sure that the in-feed and out-feed pipes on the IONtank are not bent.
3. When you put the DIA in manual By-pass mode, check whether the product water is being delivered: if not, this means that the pump unit is damaged; otherwise, there must be a problem with IONtank connections.
4. The pump is not working (you should receive a specific warning).
5. Call the Customer Service

Traces of resins produced during the desalination process may be expelled during the conditioning cycle. In this case, the post-filter may need to be washed each time a IONtank is conditioned. If the post-filter gets completely clogged up with resin during the IONtank conditioning process, it means that one of the components of the IONtank may be defective. In this case:
1. Stop the conditioning process immediately.
2. Disconnect and mark the defective IONtank.
3. Open the post-filter and wash the filter cartridge with running water.
4. Re-assemble all the parts and connect a new IONtank for the conditioning process.
5. Tell the Customer Service what has happened.
6. All these operations can be done while the analyser is working normally.

The DIA has signalled that there is no water inflow.
The deionizer has reverse osmosis water in reservoir. Deionized water supply is guaranteed by the water reserve.

1-Check that the manual drinking water valve is open.
2- Identify the type of EVe installed upstream of the system:
EVe in brass check correct manual reset;
EVe in PA (black) check if the water flows correctly in the bypass position (see paragraphs 10 and 11.7).
3- Check that the inlet pipe is not throttled.
4-Check that the alarm has not been generated during the incorrect replacement of the prefilter.
5-Check if there has been an interruption of the water supply due to maintenance on the water network. Ensure that the filters are in good condition otherwise replace them.
6- Check the By-Pass valve of the DIA, it must be set to ON.
7- Check the correct functioning and integrity of any wall filters and/or pressurization pumps, as well as the pressure reducer present on the water supply upstream of the DIA
8- If the problem persists, please call Customer Service

The DIA has signalled that there is no inflow of water.
The deionizer has not a water reserve for the osmosis process, therefore deionized water supply is not guaranteed.

See AI02 troubleshooting

The time needed to fill the tank is longer than the time indicated in the specifications. The main water flow is not sufficient to guarantee the nominal productive inflow of the system. A flashing “LT/IN” appears on the display to indicate that the event has been saving and an inspection will be made after 12 solar hours from the start of the alarm. If the problem persists, the alarm sounds every 12 hours even also if the DIA has been rebooted.
The service is guaranteed depending on the average tap water inflow.

1- Check that the inlet pipe is not throttled.
2- Check that the alarm has not been generated during the incorrectly replacement of the executed prefilter.
3-Check raw water supply line: external tap, external prefilters, system pressure, so on.
4- Replace DIA prefilter.
5- If the problem persists, please call Customer Service.

After the replacement of the filter, the DIA flush it for 30 sec.
Product water supply is available.

The filter cartridge on the DIA must be replaced within 24 hours.
Once this period has elapsed, the DIA will stop. Once the filter has been removed, after a while the DIA asks you to insert new ones.

1-Replace the old filter with new one following the procedure on the display. Remove the pre-filter (2 filters in case of DIA 120 model) and insert the new filter cartridge.
2-Do not switch off or stop the DIA/ analyzer. Replace the pre-filters while the DIA is working.
3-In some operational situation the DIA does not allow the prefilters replacement, display shows “Function not allowed”. Usually it happens in short transient, try again after few minutes

23 hours have gone since the DIA asked to replace the filter with AP02 alarm.
The filter cartridges must be replaced immediately.
The DIA in in automatic Bypass mode to avoid reverse osmosis module stress.
The DIA will stop in about an hour.
Deionized water supply available.

1- See AP02 troubleshooting.

24 hours have gone by since the DIA asked to replace the pre-filters with AP02 alarm.
The pre-filter has not been replaced, the DIA has stopped, and will remain so until the pre-filter has been replaced. Deionized water supply not available.

1- See AP02 troubleshooting.
2- Special problems, please call Customer Service

Final filter and Vent Filter life are over

1- Follow the instructions to replace the Final Filter and Vent Filter in sections 11.5 and 11.6

The osmosis water tank is empty. System is in By-pass mode to guarantee service continuity. In the meantime, new produced water is filling the tank. When the TW tank is full, the system will automatically get out of By-pass mode.

1-Check that the request of deionized water is not increased and that is not running an excessive withdrawal through the manual service valve.
2- If the system frequently goes in By-pass, please call Customer Service.

The DIA does not detect any water flow to the analyser although the pump is in operation.
Deionized water supplying available.

1- Check there are no bottlenecks in the IONtank inflow/outflow tube.
2 -Call Customer Service.
3- Follow the instructions in paragraph 10 on page 46.
Note: In AB02 Emergency mode, if you need to condition a new IONtank, contact technical support to receive the appropriate instructions.

The DIA has noticed that the power consumption of the HPP motor is higher than the pre-set limit.
Deionized water supply available.

1-Try switching the machine off and then on again after a few seconds.
2- If the problem persists, please call Customer Service

The DIA has noticed that the HPP motor does not absorb current although the command of start of the motor has been activated. It may be that thermal protection has been activated.
Deionized water supply available.

1-Press the “circuit- breaker” button on the left-hand side of the cover.
2-If the system does not reset or the problem persists, after a few minutes, please call Customer Service

The DIA has noticed some water at the bottom of the frame. A pump will drain the water off while the DIA switches to By-pass mode. If the DIA restores the right functions, it will automatically get out of By-pass mode. Product water supply available.

1- Check if there are any water leaks visible.
2- Check if you performed a few minutes/hours the change of the pre-filter or the IONtank that may have small collection of water in the bottom of the deionizer. If wait a few minutes, the system should reset itself.
3- If the water leak is copious, close the water tap outside and switch off the DIA.
4-Call Customer Service.

The DIA has detected that RW tank level sensor does not work properly.
Deionized water supply available.

1- Try switching the machine off and on after a few seconds.
2- If the problem persists, please call Customer Service.

The DIA has detected that TW tank level sensor does not work properly.
Deionized water supply available.

1- Try switching the machine off and then on again after a few seconds.
2- If the problem persists, please call Customer Service.

The DIA has detected a problem on the HPP pump. Deionized water supply available

1- Call Customer Service

The DIA has detect that the conductivity of the deionized water has reached the maximum set value (typically 0.8μS/cm). It is necessary to replace the exhausted IONtank with a new and conditioned. The installation of new IONtank already conditioning is the responsibility of the operator.

1-Replace the IONtank in use with a new IONtank already conditioned. Do not turn off the DIA; refer to this manual for detailed operations.
2-After the IONtank replacement, make sure the deionized water is flowing to let the conductivity call reset its reading.

The conditioning of new IONtank has been interrupted from the operator.

1- Call Customer Service for information.

The DIA has not detected any conductivity change in the product water during the last 120 hours of delivery pump operation (DP).

You can reset this alarm message by holding the key UP+ and DOWN- simultaneously for 3 seconds
1-Check that there are no alarms related to a malfunction of the delivery pump (AB02). In which case wait a couple of hours before calling for assistance
2-If you have a new IONtank conditioned try to replace it.
3- Call Customer Service.

The DIA cannot read the conductivity out of osmotic module.

You can reset this alarm message by holding the key UP+ and DOWN- simultaneously for 3 seconds
1- Reset the alarm, call Customer Service and keep working normally.

An IONtank conditioning cycle has started.
This procedure happens outside the circuit (off-line) and has no impact on the normal routine (do not switch off the system). Deionized water supply available.

If the DIA is configured to stop when output water conductivity exceeds the value of 2.0 μS/cm. This message appears on exceeding this conductivity threshold. The water service is not available if you do not put in manual bypass the deionized water under the direct responsibility of the operator who makes the manoeuvre.

1. Replace the IONtank with a new conditioned one. Switch the DIA off and then on again.
2. If you do not have any conditioned IONtank ready, start a conditioning cycle. Replace the IONtank in use with the conditioned one and resume normal operation. During the conditioning cycle do not use the analyzer because the conductivity of the product water is more than 2.0μS/cm.

The DIA has noticed twice in a row that the osmotic module is producing less than the rated value.
A flashing “LT/RO” appears on the display to indicate that the event has been saved, the DIA will made an inspection after 12 solar hours from the start of the alarm. The service water is still available in proportion to the production capacity of the osmotic module.

1-If the DIA has not been working for some days wait a few hours before calling the Customer Service, the alarm may deactivate itself.
2-If the alarm sounds again or the DIA has been working, call the Customer Service.
3-Silence the alarm and continue normal operation.

The DIA has noticed that conductivity level of the osmosis module outflow has reached the pre-set level.
Once the alarm has stopped, if it does not deactivate itself, it will sound again every 12 hours.
A flashing “μS/RO” appears on the display to indicate that the event has been saved, the DIA will made an inspection after 12 solar hours from the start of the alarm. Product water supply available.

1-If the DIA has not been working for some days wait a few hours before calling the Customer Service, the alarm may deactivate itself.
2-If the alarm sounds again or the DIA has been working, call the Customer Service.
3-Silence the alarm and continue normal operation.

The DIA has detected a pressure problem on the R.O circuit. The DIA In the first 5 minutes try to resolve it. If the DIA do not restore the alarm, it will consume the available water and then go in AB01.

Reset the alarm by turning the deionizer OFF/ON.
1-If the alarm condition persist turn off the DIA and set the manual valve in By-Pass position.
2-Call immediately Customer Service.

Start-up mode in which the DIA first flushes the pre-filters, then prepares the IONtank.

During an inspection cycle of the osmosis module flow, the system has identified a situation in that has caused the cycle interruptions.

The DIA remove the water from its piping and tanks.

When the product water conductivity reaches 0.4 μS/cm, the DIA reminds in advance the operator to prepare a new IONtank.
Once the alarm has stopped, it sounds again every hour until a new IONtank has been conditioned or until, in the meantime, the conductivity level has dropped above 0.2 μS/cm (this means that the IONtank used has been replaced with a new one)

1-Prepare a new IONtank as soon as possible. You do not need to stop working or wait for other messages.
2- This message does not appear when the set-up value for the CD limit is lower than 0,4 μS/cm
3- Exceptionally may happen that even though the new IONtank has been replaced, the deionizer requires a new conditioning after the first few hours of operation with the new consumable. In this case, do not perform the conditioning.

The UV lamp life is over.

1- Call Customer Service to replace the UV lamp..

The DIA detected an irregular water flow in the raw water tank.

1- Call Customer Service

The DIA has detected a leak on the external conditioning circuit.

1- Disconnect and connect the IN and OUT quick couplings on the IONtank and press ENTER
2- If the problem persists, please call Customer Service

During conditioning cycle the DIA has detected a problem on the pump, which running the conditioning of IONtank.

1- Try to vent IONtank, with the specific valve on the top, from the air until the water comes out, but avoid keeping raised the IONtank vent ring for more than 20 seconds at a time. Alternate the IONtank venting every 20 seconds.
2- Check the IONtank quick coupling and turns the DIA OFF/ON.
3- If the problem persists, call Customer Service; do not use the IONtank in the conditioning position.
4- Wait assistance instructions for manually proceed with the IONtank conditioning.

– The system is equipped with an external sensor positioned on the floor between the feed tap and the deionizer
– This sensor has detected the presence of water on the floor and has enabled the closing of the solenoid valve placed on the input line (Eve)
– After the cause of the water loss is resolved, the solenoid Eve must be reset manually.

1- Identify the causes of the water loss and remedy it.
2- After checking, reset the AS12 message as described below
Identify the type of EVe installed upstream of the system:
– EVe in brass
It is necessary to reset the valve by turning the knob on the base of the solenoid valve by ¼ of a turn, first clockwise and then counterclockwise. Reset the AS12 alarm by keeping the + and – keys pressed for 3 seconds.
– Eve in PA (black)
Reset the AS12 alarm by keeping the + and – keys pressed for 3 seconds.
3- If necessary, call for assistance

The system has noticed a malfunction of flow meter on service line.
The first time that the alarm is triggered, the display shows: ”Vent IONtank from air till water comes out, then press ENTER” this message is saved in Alarm History as WS13.

The alarm resets itself after restoring the functioning
1- Vent IONtank in use with the specific valve on the top of the IONtank, until the water comes out.
Carry a paper towels to prevent water splashes
2- If the problem persists, please call Customer Service

During the conditioning cycle, the DIA has detected that water flow on the conditioning circuit is less than the set value.
The DIA complete the conditioning counting the litres.

1- Try to vent IONtank, with the specific valve on the top, from the air until the water comes out, but avoid keeping raised the IONtank vent ring for more than 20 seconds at a time. Alternate the IONtank venting every 20 seconds.
2- Proceed normally with the conditioning.

During the conditioning cycle, the DIA has detected a malfunction of the flow meter. The DIA complete the conditioning counting the minutes.

1- Try to vent IONtank, with the specific valve on the top, from the air until the water comes out, but avoid keeping raised the IONtank vent ring for more than 20 seconds at a time. Alternate the IONtank venting every 20 seconds.
2- Proceed normally with the conditioning.
3- Call Customer Service.

During the conditioning cycle, the DIA has detected a malfunction of the off-line pressure switch conditioning. The DIA complete the conditioning counting the litres.

1- Try to vent IONtank, with the specific valve on the top, from the air until the water comes out, but avoid keeping raised the IONtank vent ring for more than 20 seconds at a time. Alternate the IONtank venting every 20 seconds.
2- Proceed normally with the conditioning
3- Call Customer Service

The DIA has noticed that the IONtank connection for external conditioning are open or not well connected.

1- Attach the connection for external conditioning to the joint and press ENTER
2-If the problem persist call the Assistance.

The DIA has detected a malfunction of EVB.
The first time that the alarm is triggered , the display shows: ”Vent IONtank from air till water comes out, then press ENTER” this message is saved in Alarm History as WS18.

1- Try to vent IONtank, with the specific valve on the top, from the air until the water comes out, but avoid keeping raised the IONtank vent ring for more than 20 seconds at a time. Alternate the IONtank venting every 20 seconds.
2- If the problem persist call Customer Service.

The DIA has detected a malfunction of the PSDP.

1-Call Customer Service.

The DIA has detected an inlet water temperature above the specification limit (37 ° C) of analytical instrumentation, if the DIA has been configured for block the external solenoid valve will close the inlet flow (AS20a) otherwise the DIA will continue to be fed with water> 37 ° C (AS20b).

(AS20c) The connection of the temperature probe to the electronic board has been interrupted, in this case the EVe inlet solenoid valve is not activated.

1- If the block is set, when the temperature is high, the external solenoid valve connected to the water inlet pipe comes into action.
When the water temperature drops below 37 ° C, proceed as described below
Identify the type of EVe installed upstream of the system:

– EVe in brass
It is necessary to reset the valve by turning the knob on the base of the solenoid valve by ¼ of a turn, first clockwise and then counterclockwise. Reset the AS20a alarm by keeping the + and – keys pressed for 3 seconds.
– Eve in PA (black)
Reset the AS20a alarm by keeping the + and – keys pressed for 3 seconds.

2- For AS20c Call support.

If you have 2 or more DIA in network, the DIA has detected a problem in the configuration.

1- Call Customer Service.

The system is detecting a functional problem with the raw water tank level sensor (RW). Water at the service is available.

1- Call Customer Service.

The system is detecting a functional problem with the level sensor of the treated water tank (TW). Water at the service is available.

1- Call Customer Service.

Enabled only if there are two or more DIAs in network configuration. The DIA has identified a problem that does not affect the water in service.

1- Call Customer Service.

The heat sensor has recorded a temperature of more than 50°C inside the switchgear housing.
In these conditions, the microprocessor may not function correctly.

1- Check environmental and installation conditions of the deionizer, near heat sources as radiators, sunny windows.
2- Call Customer Service

The buffer battery has reached an insufficient level of charge. In this condition, the backup of the recorded data is not guaranteed.
Normally buffer battery life is approximately 3-4 years.

1- Call Customer Service