PROBOIL PROBOIL.4E Troubleshooting guide

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PROBOIL.4E
User & Installation Guide
www.proboil.co.uk
See top of boiler unit for contact details
 Please read these instructions carefully efore
installation or use and retain for future reference.
 You must install the tap and filter efore the oiler.
We have a policy of continued product and quality development and improvement.
Accordingly, we reserve the right to amend the specification at any time. All errors and omissions excepted.

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1 PROBOIL.4E USER GUIDE .......................................................................................................................................................... 3
1.1 IMPORTANT SAFETY AND USAGE CONSIDERATIONS: .......................................................................................................... 3
1.1.1 G ENERAL SAFETY : ......................................................................................................................................................................... 3
1.1. E LECTRICAL SAFETY : ...................................................................................................................................................................... 4
1.1.3 I NTENDED PURPOSE : ..................................................................................................................................................................... 5
1.1.4 S ENSIBLE FIRE SAFETY PRECAUTIONS : ................................................................................................................................................ 5
1.1.5 D AY TO DAY USAGE CONSIDERATIONS : .............................................................................................................................................. 6
Using the product safely ................................................................................................................................................................... 6
To dispense hot water (design may vary by model): ........................................................................................................................ 7
⚠ Reducing the ris of splashing: .................................................................................................................................................... 8
To get the best results: ..................................................................................................................................................................... 8
Periods of non-use ............................................................................................................................................................................ 9
Aesthetic cleaning .......................................................................................................................................................................... 10
1.2 USING THE PRODUCT: ........................................................................................................................................................ 11
1. .1 B OILER SCREEN AND INTERFACE : .................................................................................................................................................... 11
1. . F ILTER REPLACEMENT GUIDE : ........................................................................................................................................................ 13
Understanding the expected life of the filter: ................................................................................................................................ 13
Replacing your PROBOIL filter: ....................................................................................................................................................... 14
1. .3 D ESCALING THE PROBOIL SYSTEM : ............................................................................................................................................... 16
The aerator on the end of the tap/dispenser spout: ...................................................................................................................... 16
The water tan within the PROBOIL.4E boiler: ............................................................................................................................... 17
1. .4 C LEANING AND STERILISING THE PROBOIL SYSTEM INTERNAL TANK : .................................................................................................... 1
1.3 TROUBLESHOOTING:.......................................................................................................................................................... 25
1.3.1 B OILER SCREEN AND INTERFACE : .................................................................................................................................................... 5
1.3. W ATER TEMPERATURE : ............................................................................................................................................................... 5
1.3.3 W ATER DRIPPING FROM THE SPOUT END : ........................................................................................................................................ 6
1.3.4 W ATER FLOW RATE / STREAM QUALITY : .......................................................................................................................................... 6
1.3.5 L EAKING FROM THE BOILER ........................................................................................................................................................... 7
1.4 WARRANTY TERMS AND CONDITIONS: .............................................................................................................................. 28
2 PROBOIL.4E INSTALLER GUIDE ............................................................................................................................................... 29
2.1 IMPORTANT TECHNICAL DATA: ................................................................................................................................................ 29
Boiler: ............................................................................................................................................................................................. 29
Filter cartridge: ............................................................................................................................................................................... 29
Tap / dispenser: .............................................................................................................................................................................. 30
2.2 BOILER BOX PARTS AND CONTENTS: ........................................................................................................................................ 31
2.3 INSTALLATION: ......................................................................................................................................................................... 32
.3.1 I NSTALLATION PREPARATION ............................................................................................................................................................. 3
About the product: ......................................................................................................................................................................... 33
Install location: ............................................................................................................................................................................... 33
Electrical: ........................................................................................................................................................................................ 33
Plumbing: ....................................................................................................................................................................................... 33
.3. I NSTALL THE TAP ............................................................................................................................................................................. 34
.3.3 I NSTALL THE FILTER .......................................................................................................................................................................... 35
4 in 1 tap installation only (taps including cold filtered water function). ....................................................................................... 37
3 in 1 tap installation only (taps excluding cold filtered water function). ...................................................................................... 38
.3.4 I NSTALL THE PROBOIL BOILER .......................................................................................................................................................... 39
.3.5 C OMMISSIONING AND TESTING .......................................................................................................................................................... 44
Commissioning chec list:................................................................................................................................................................ 44

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Thank you for choosing PROBOIL.4E. By reading this entire guide you will ensure that the product is installed and used
safely and will give its best performance, this guide should be used in conjunction with any additional product guides.
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1 PROBOIL.
PROBOIL.PROBOIL.
PROBOIL.4E
4E4E
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user guideuser guide
user guide
1.1
1.11.1
1.1 Important safety and usage considerations
Important safety and usage considerationsImportant safety and usage considerations
Important safety and usage considerations:
::
:
T roug out t is guide, t e following symbols are used to ig lig t key points or safety considerations.
 An information point or tip for
installation or usage.
 A service, maintenance
or care consideration.
⚠ A technical or safety
consideration or warning of
hazardous situation with regard to
life and property.
1.1.1 General safety :
::
:
⚠ WARNING : This appliance can be used by children aged from 8 years and above and persons
with reduced physical, sensory or mental capabilities or lack of experience and knowledge only if they
have been given supervision or instruction concerning use of the appliance in a safe way and have
understood the hazards involved. Children should not be allowed to play with the appliance. Cleaning
and user maintenance should not be made by children unless they are older than 8 and supervised.
⚠ WARNING : Servicing and maintenance of this product must be carried out by authorised
persons having knowledge and practical experience of the appliance, in particular as far as safety and
hygiene are concerned. The PROBOIL system contains no user serviceable parts and should only ever
be serviced by the recommended service agent. In the event of any suspected problem you should
immediately cease usage, isolate the water supply, disconnect the power and contact the service
agent noted on the top of the boiler.
⚠ WARNING : This product should only be installed into an internal domestic environment with an
ambient temperature of 10-40°C. If the unit is accidentally left filled in an unheated environment for
a prolonged period, do not switch it on if there is a possibility that the water inside is frozen, it must
defrost naturally.
⚠ WARNING : All surfaces, especially those made from metal, may become hot whilst in operation.
Use caution when touching these surfaces. Inform all users that the surfaces may become hot.

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⚠ WARNING : Never use this appliance when your judgement or coordination may be impaired by
the use of either alcohol or drugs.
⚠ WARNING : Do not open or disconnect the tank until the tank has cooled to a safe temperature.
⚠ WARNING : If the appliance is to be handed over to someone else for use, all documentation
and information should also be given.
⚠ WARNING : This appliance must be installed respecting local plumbing and electrical regulations.
⚠ WARNING : This appliance must use only genuine parts, accessories and sundry consumables.
⚠ WARNING : Packaging materials can be dangerous to children and animals; ensure they are
disposed of safely and correctly according to local laws.
1.1.2 Electrical safety:
⚠ WARNING : Do not use this appliance if you suspect it or any of its cables or hoses are damaged
or kinked in any way, or is performing differently from how you would expect. Never use any
appliance with a damaged mains power lead. In the event of any suspected problem you should
immediately cease usage, isolate the water supply, disconnect the power and contact the service
agent noted on the top of the boiler.
⚠ WARNING : This appliance must be disconnected from the power during installation,
maintenance or cleaning.
⚠ WARNING : Only use the supplied power cable and connect it directly to the power outlet rather
than an extension power outlet.
⚠ WARNING : The appliance must be installed so that it can be disconnected from the mains
power supply and the outlet socket must be accessible at all time.
⚠ WARNING : This appliance must be connected to a grounded / earthed power outlet only.
⚠ WARNING : This appliance must be installed respecting local plumbing and electrical regulations.

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⚠ WARNING : Do not place any water connections directly near or above electrical appliances or
connections.
⚠ WARNING : This appliance is not intended to be operated by means of an external timer or
separate remote control system.
⚠ WARNING : unless attached to a modern consumer unit with RCD protection we recommend
installing a local RCD protection device in the socket being used by the appliance.
1.1.3 Intended purpose:
⚠ WARNING : This appliance must only be used for heating water.
⚠ This appliance is intended only for domestic use and should not be used for commercial
purposes.
⚠ Do not add to, exchange or modify any component of the boiler, mixer tap, filter or connections
from those supplied and install them only as instructed. The spout exit or any part of the system must
not include any additional third party adaptors or connections that will add resistance to the system.
 We only warrant the original filter type supplied with your boiler which is formulated specifically
for the PROBOIL product. If the filter is removed or exchanged for an alternative model it may have a
detrimental effect to your system and accordingly will invalidate your warranty. If you have specific or
unusual incoming water conditions, please contact the service number on the boiler for further
advice.
⚠ This appliance is intended to be permanently connected to the water mains.
⚠ The boiler and mixer tap are not designed to work with any other combination of appliances
other than as shown within this guide.
1.1.4 Sensi le fire safety precautions:
⚠ Do not store or use petrol or other flammable rags, paper, aerosols, vapours or liquids in the
vicinity of this or any other appliance.

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⚠ Install the unit on a heat-resistant surface. Make sure that the installation surface is firm and
level.
⚠ For safety regulations the plug or means of disconnection must always be easily accessible after
installation.
⚠ Do not use any water jet or steam near this appliance.
⚠ Always ensure an airgap of at least 10mm around the appliance and that any closed cabinet has
sufficient airflow.
1.1.5 Day to day usage considerations:
Using the product safely
Using the product safelyUsing the product safely
Using the product safely
⚠ Hot water: We have taken great care to deliver a product with many built in safety features, but
you will also need to take due care when dispensing heated water to avoid accidental scalding. It is
important that everyone who uses this product understands how to use it safely. The example shown
in this guide may vary slightly from model to model.
⚠ Continual short dispenses of water <100ml may fill the internal expansion vessel in the boiler,
this may cause the product to drip water from the tap spout when the boiler is heating, if you
experience this then dispense a few litres of water to self-empty the expansion vessel.
⚠ Whilst the flow rate from the product has a maximum flow rate limitation inbuilt the flow rate
may vary in use due to fluctuations in pressure or air pockets. When the water is dispensed it may
take a brief moment to dispense as it refills previously emptied pipes.

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To dispense hot water
To dispense hot waterTo dispense hot water
To dispense hot water (
((
(design
design design
design may vary
may varymay vary
may vary y model
y modely model
y model)
))
):
::
:
For 4 in 1 taps only (with filtered cold function):
 When dispensing, hold the Hotkey close to the ‘cup’
symbol on the centre front of the tap. The boiler will dispense
water. When the Hotkey is moved away, it will automatically
stop dispensing hot water.
 Your tap can dispense 4 types of water:
1) Cold (unfiltered) water directly from mains supply - This is
delivered when the right tap handle is pulled forwards.
) Cold (filtered) water - This is delivered when the right tap
handle is pushed backwards. We recommend “flushing” the
filtered water on each use to ensure cold and fresh water is
delivered:
a. Additionally, if the tap has not been used for 1
week you should flush litres.
b. Or if the tap has not been used for 4 weeks you
should flush 10 litres.
3) Hot (domestic) water - This is delivered when the left tap
handle is pulled forwards.
4) Hot (boiled & filtered) water - This is delivered when the
‘Hotkey’ key fob is moved close to or rested on the front of
the tap below the spout (near the steaming cup indicator
symbol).
For 3 in 1 taps only (without filtered cold function):
 Your tap can dispense 3 types of water:
1) Hot & Cold (domestic) water - This is delivered when the
handle is tilted right to increase flow. Cold is achieved by
rotating the handle backwards becoming warmer as the
handle is rotated forwards.
5) Hot (boiled & filtered) water - This is delivered when the
‘Hotkey’ key fob is moved close to or rested on the front of
the tap below the spout (near the steaming cup indicator
symbol).

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⚠
⚠⚠
⚠ Reducing the risk of splashing:
Reducing the risk of splashing:Reducing the risk of splashing:
Reducing the risk of splashing:
1) Avoid holding the vessel that you are filling too far away or
close from the spout exit. We recommend around 5-10cm
( -4”). Start with the cup closer to the spout exit.
) Tilt the cup slightly to reduce the splashing from the base
of the cup.
⚠ Eliminate backflow contamination:
As your mixer tap has multiple waterways, as with all taps it is
important to eliminate the risk of back flow contamination in
waterways.
1) Always respect the minimum gap shown between the
spout exit and the vessel being filled.
2) Never use 98° water simultaneously with any other water
source.
To get
To get To get
To get the
the the
the est results:
est results:est results:
est results:
 Each time the product is used you should flush a small amount of boiled water through before use. This ensures
fresh water is dispensed, typically this can be used to preheat your cup. If unused for extended periods, then flush the
product for a longer time (see section periods of non use).
 If two hands are needed (to hold a larger
pan for example), first move the spout over the
sink bowl, then the Hotkey can be leaned against
the front of the tap instead as shown.
Start with the pan in both hands and closer to
the spout exit until it has a small volume of water
in the base, then if the pan becomes
uncomfortably heavy place the pan on the
drainer, remove the hotkey, rotate the spout
towards the pan then replace the hotkey to fill
the pan further. Once filled remove the hotkey
before removing the pan.
⚠ Always exercise due care when handling
larger volumes of hot water.
5cm / ” (Min.)
10cm / 4” (Max.)

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⚠ When dispensing hot water always be mindful to keep your hands and arms from being under the spout exit.
⚠ Even though the spout it is thermally insulated, you should avoid touching the very end of the spout, especially
immediately after dispensing hot water.
⚠ When dispensing hot water using the ‘Hotkey’ do not simultaneously dispense any other type of water to avoid
the risk of backflow.
 This product has a unique patented safety system by using the ‘Hotkey’ key fob to dispense the near boiling
water. If you want to prevent the accidental use of the near boiling water tap function only for example if children are
in your home, then store the Hotkey away from the tap. The Hotkey is magnetic to allow you to ‘stick’ it in out of
reach places (such as the fridge or the cooker hood). With the Hotkey away from the tap, it can only be used safely as
a conventional tap without the hot water function.
 If the tap can only be used by competent adults, then the
Hotkey can be ‘stuck’ to the rear of the tap body (as shown) when
not in use for more convenient access.
Magnetic fields:
The ‘Hotkey’ key fob houses a strong magnet used to sense its proximity to the mixertap and also for convenience
when storing the Hotkey. Any customers with a pacemaker should not place the Hotkey within 5 inches (100mm)
of such devices.
All magnets can damage electronic devices and bank cards so they should be stored away from each other.
Periods of non
Periods of nonPeriods of non
Periods of non-
--
-use
useuse
use
 If the product is going to remain unused and unattended (for example you are away for a few days), we
recommend changing the temperature to its minimum setting 75°C, this will reduce the energy consumption and
encourage sanitary conditions.
⚠ WARNING : If you are not using the product or leaving it unattended for a period longer than 1
week you should turn the boiler into standby mode (see using the product section), do not turn off
the power at the mains socket or unplug the boiler as this may reset the filter counter.

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You may also consider closing your mains stop cock to prevent flood damage from any of the water using appliances and
pipes in your household (as generally advised by insurers, each home will have individual requirements check first with
your plumber if you are unsure).
Upon returning after an extended period of absence with the boiler power off you must re-sanitise the boiler and
connections by following the steps below.
1. Turn on the water supply (if previously isolated)
. Turn on the boiler but leave it in standby mode (boiler screen does not display temperature)
3. Dispense the entire contents of the boiler using the hotkey as normal until the heated water stream is entirely cold
then allow it to continue to run for a further 5 minutes.
4. Turn on the standard cold tap on and run this for 5 minutes (not simultaneously with the boiler water)
5. If your tap has a cold filtered water function (4 in 1 taps only) run the cold filtered water for 1 minute.
6. Turn the boiler on using the standby key (boiler screen now displays the temperature)
7. Adjust the boiler temperature to 98°C using the “+” key
8. Wait for the boiler to display “READY”
9. Wait a further 10 minutes
10. Adjust the temperature to your final desired setting using the “+” and “-“ keys
11. dispense 4 litres of boiled water using the Hotkey (approximately 4 minutes)
1 . Allow the boiler to reheat fully and display “ready” before use
⚠ For very long extended periods of non-use please also refer to section ”Cleaning and sterilising the PROBOIL
system internal tank”
Aesthetic c
Aesthetic cAesthetic c
Aesthetic cleaning
leaningleaning
leaning
 Use of any cleaners with acids, abrasives, alkaline or organic solvents, on any part of the product
can result in deterioration of the components and will void the warranty. Clean the product only with
a mild dish soap and a damp non-abrasive cloth. Separate care information for the tap is provided
with your tap installation instructions.
⚠ WARNING : Do not use any excess water or steam jet when cleaning this appliance.
⚠ WARNING : Cleaning and user maintenance shall not be performed by children without
supervision.
⚠ WARNING : Disconnect the appliance from the power outlet before cleaning, allow the product
to cool before cleaning and take care of any surfaces or components that may still be hot.
 You should ensure the boiler is and tap aerator are both free of limescale to ensure continuous
safe and energy efficient usage of this product. Advice on sterilisation and descaling are covered
separately within this guide.

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1.2
1.21.2
1.2 Using the product:
Using the product:Using the product:
Using the product:
1.2.1 Boiler screen and interface:
The boiler uses a touch screen interface to both display and change the status of the boiler.
Temperature adjust:
Touch sensitive - & + keys lower and raise the boilers maximum target temperature
between a selection of pre-set values 75, 85, 90, 95, 96, 97- 98°C
White colour, constantly illuminated when unit is not in standby mode, the boiler will
beep when pressed to acknowledge the command.
The water inside the boiler tank will not exceed 98° to ensure compliance to
local UK safety laws.
Standby:
Touch sensitive P key switches the unit between on and standby modes, press and
hold for approximately 1.5 seconds to activate.
When in standby mode the water inside the boiler will not be heated.
Touch sensitive, white colour, constantly illuminated when unit is not in standby mode,
flashes when in standby mode.
The boiler will beep when pressed to acknowledge the command.
Ready indicator:
Displays when the boiler is not in a heating phase indicating the water is at or near the
pre-set target temperature.
Blue colour, constant illumination when unit not in standby mode or the boiler is
heating.

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Heating indicator:
Displays when the boiler is in a heating stage indicating the boiler is re-heating the
water inside to achieve the pre-set target temperature.
Red colour, constantly illuminated when heating element is on (unless in standby
mode).
T ermometer symbol:
Red colour, constantly illuminated when the unit is not in standby mode.
Filter life indicator bars:
Displays the used and remaining time until the filter cartridge must be replaced.
On initial power on or after the counter is reset it will display the following bars 1 x red,
1 x orange, 6 x blue
As time passes white/blue and orange bars will disappear indicating the expired time.
W en all t e bottom bar is flas ing red you must replace t e filter cartridge
regardless of the amount of usage both to protect the internal components of the
boiler and ensure hygiene. Eac filter as a maximum usable life of 6 mont s.
If the filter life is exceeded the product will beep daily to serve as an audible reminder.
We also operate a free reminder service when you register online or call the service
number on the top of the boiler.
In the event that power is interrupted to the boiler the filter counter may be reset
accordingly we also recommend you write the installation date on the filter label.
Pressing and simultaneously holding both - & + buttons for apx. 1 Second will reset
the filter life timer. The filter indicator cannot be reset unless fully empty to prevent
accidental resetting.
T e 2 digit “multifunction” display:
Displays various information depending on the status of the boiler and the last key
press:
1) Current in tank water temperature: in normal use (without prior key press) the
current approximate water temperature in the tank will be displayed. To reduce
energy use it is normal for the displayed temperature to reduce by a few degrees
before being reheated back to the target temperature.
) Target in tank water temperature: After either the + or - key is pressed on the
display the multifunction display will change to show the desired target
temperature, after a moment it will then revert to displaying the current
temperature:
3) Troubles ooting error codes: In the event of the boiler self-diagnosing a problem
it will display an “E” code to help to diagnose the fault, see troubleshooting
section.
Blue colour, constantly illuminated when the unit is not in standby mode.

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1.2.2 Filter replacement guide:
Understanding the expected life of the filter:
Understanding the expected life of the filter:Understanding the expected life of the filter:
Understanding the expected life of the filter:
The product is supplied with a filter specifically designed to both improve the taste and clarity of the water but also to
assist protecting the boiler from contaminants and scale.
The filter status bar time limit is 6 mont s. This reminder is based on 19 degrees Clark (London) hardness of water and
an estimated 5 litres filter use per day. The filter volume at this hardness is approximately 10 0 litres. Research shows a
near 50/50 split of average water use between domestic boiled and ambient filtered water usage.
T e volume limit is 1750 litres. Based on half the capacity of the filter in the softer water conditions, this assumes 50%
of the water is used for cold drinking water only.
Each installation will have a different number of people using it, a different usage pattern and an individual water
hardness “GB Clark rating”. Because of this the PROBOIL can only remind you when to check the filter, you must judge
for yourself if the filter needs changing or not, as no two installations are the same use the guide below.
 Regardless of the amount of usage it is required for you to replace the filter on schedule for reasons of product
protections, hygiene and maintaining your warranty. The recommended replacement frequency may increase in hard
water areas or high usage applications.
Only genuine parts must be used to maintain your product warranty, these are available at proboil.co.uk or by calling
([phone].
1) Take your GB Clark water hardness value (using a test strip or type
your postcode into your water supplier’s website) and add ° Clarke
(30PPM).
) Using this NEW HIGHER Clark hardness value against the table
(right) in conjunction with your estimated personal water usage you
may better judge the filter replacement guide.
3) Worked Example: WATER USAGE = 086 litres, your local water
hardness is 11° Clark, add ° Clark, then the ‘REPLACE LITRES’ value
in the table for 13° Clark is 850 litres. In this example the ‘WATER
USAGE’ is more than ‘REPLACE LITRES’ so the filter requires
replacement.
⚠ If your PROBOIL is noisier t at normal or t e flow rate is
reduced t is is typically a good practical indicator t at t e filter
may need replacing and t e boiler may need to be descaled.
Replacement filters can be obtained by contacting the service
agent number on the sticker on the top of the boiler or by visiting
PROBOIL.CO.UK
GB °Clark PPM
*REPLACE LITRES
5 70 1960
6 90 1610
8 107 1415
9 1 5 1 15
10 143 1065
11 161 945
13 179 850
14 196 775
15 14 640
16 3 590
18 50 545
19 68 510
0 86 480
1 304 450
4 339 405
6 375 365
9 411 335
33 464 50
36 518 0
41 589 185
48 679 170

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Replacing
Replacing Replacing
Replacing your
youryour
your PROBOIL filter:
PROBOIL filter:PROBOIL filter:
PROBOIL filter:
Before beginning you should have ready to hand:
 Your replacement filter
 A large bowl or pan or jug or small bucket
 A cloth
 A permanent pen
1) Turn on the 98°C water by holding the Hotkey close to the ‘cup’ symbol.
) Turn the blue lever found on the three way tee (E4) to the closed position as shown.
3) The flow rate of the 98°C water coming from the tap should gradually decrease, before stopping completely. Now
remove t e Hotkey from t e tap.
4) Turn the filter (C5) anticlockwise (from right to left) then pull the filter (C5) downwards away from the filter head
(C3), have your cloth to hand in case a small amount of water remains in the pipework.
Note: Please dispose of the old filter in an appropriate manner, your PROBOIL filter is part our filter recycle scheme and
can be returned to us following the instructions in the leaflet that will come with your new replacement filter.
5) Unpack the new filter and check for any transport damage, write the replacement date on the filter label in
permanent pen and remove the blue plastic dust cap from the top of the filter.
6) Insert the filter cartridge (C5) upwards into the filter head (C3). Note the filter label should be facing you when
fitted.
7) Turn the filter cartridge (C5) fully clockwise (left to right) to secure the filter cartridge (C5) to the filter head (C3).
Valve Closed
Valve Open

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⚠ Failure to flus t e new filter before use (as described in steps 8-11 below) may
partially block your PROBOIL boiler wit loose carbon filter fines and t erefore invalidate
your warranty.
8) Turn on the mains Tee valve (E4) directly before the filter inlet so the valve is in the indicated fully “open” position.
9) Place filter head’s white flush pipe (C4) in a bucket or large bowl.
10) Using a coin (or similar) turn clockwise 90° the flush valve on the top of the filter head (C3) slowly to the “open”
position to start the flushing. You must flush approximately 10 litres of water through pipe (C4). Note: If you need to
empty the bucket part way through, turn the water off by temporarily turning the closing the flushing valve (C3) by
turning the flush valve 90° anticlockwise.
11) After fully flushing the filter for 10 litres close the flushing valve by turning the flush valve on the filter head (C3) 90°
anticlockwise to the “closed” position.
1 ) Press and hold simultaneously the “+” and “-“ screen keys to reset the filter counter on screen
13) Dispense the 98°C water by holding the Hotkey close to the ‘cup’ symbol, note: initially as the air purges you may
get some spitting from the end of the tap, this is normal, leave this on and flush for a further 5 minutes or 5 litres.
14) Wait for the boiler to show “READY” before use.
 We only warrant the original filter type supplied with your boiler, which is formulated specifically for the
PROBOIL product. If the filter is removed or exchanged for an alternate model it may have a detrimental effect to your
system and accordingly will invalidate your warranty. If you have specific or unusual incoming water conditions, please
contact the service number on the boiler for further advice.
 Failure to adjust the incoming water flow rate may reduce the filter life or prevent the filter from performing
correctly, leading to premature damage to other components of the system and will therefore invalidate your warranty.
 The filter head must be replaced after 5 years of use.

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1.2.3 Descaling the PROBOIL system :
 PROBOIL4E like all other appliances that use hot water can become coated with limescale over time, replacing
your filter frequently will help delay this process, but not prevent fully it (even in areas with lower water hardness).
Depending on the frequency of your usage pattern and the harder the water in your area, the quicker you should expect
the limescale to build and therefore your product will need to be cleaned and descaled.
Only genuine parts and consumables must be used to maintain your product warranty, these are available at
proboil.co.uk or by calling ([phone].
⚠ If your PROBOIL is noisier t at normal or t e flow rate is reduced t is is typically a good practical indicator t at
t e filter may need replacing and t e boiler and aerator may need to be descaled, there are two key parts of the
product that likely will need regular descaling.
The aerator on the end of the tap/dispenser spout:
The aerator on the end of the tap/dispenser spout:The aerator on the end of the tap/dispenser spout:
The aerator on the end of the tap/dispenser spout:
If the aerator at the end of the tap spout contains debris or scale then it will reduce the flow rate, cause dripping during
reheating of the water and may cause more splashing when in use.
The aerator and its housing can be descaled using ordinary white wine vinegar and water solution.
1) Press and hold the P key for 1.5 seconds, this will turn the boiler into “standby” mode, run domestic cold water
through the spout for a few seconds so internal parts are cool to the touch.
)
Unscrew
and remove
the aerator housing
(1
)
anti
clockwise (use rubber gloves if you need to get a
better grip).
3) Whilst holding the spout centre tube (4) pull the
aerator (2) away from the spout.
The method may vary depending on the model
installed.
4)
Place the aerator
(2)
and if required the aerator housing
(1)
into a small cup
sufficiently filled with white wine
vinegar and water.
5)
Leave the parts soaking for around 5 minutes
6)
Clean the scale from the parts using a non
-
abrasive tool such as a toothbrush. If the sca
le is not cleared repeat
step (4-5).

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7)
Once clean of scale and debris rinse
all
parts thoroughly in cold water.
8)
Reassemble the parts in the reverse order, you must ensure the aerator
(2)
is firmly pushed into the spouts
centre tube (4). Also make sure seal (3) is in place.
9) Press and hold the P key for 1.5 seconds, this will turn the boiler back on from “standby” mode.
The
TheThe
The water
water water
water tank within the PROBOIL.
tank within the PROBOIL.tank within the PROBOIL.
tank within the PROBOIL.4E
4E4E
4E oiler:
oiler:oiler:
oiler:
The filter system provided with PROBOIL will help to prevent of the calcification (scaling) of the boiler however it will be
required from time to time that the PROBOIL unit will need to be descaled, drained and refilled to ensure the maximum
energy efficiency and service life from the product especially in hard water areas.
 The suggested PROBOIL tank minimum descaling frequency is once annually. Descaling solutions can be obtained
by contacting proboil.co.uk or by calling ([phone].
If the tank within the boiler becomes calcified it will lead to a reduction of both energy efficiency and temperature
accuracy of the boiler. The boiler must only be cleaned using only genuine PROBOIL descaling solution to maintain your
product warranty, other formulations may cause inadvertent damage.
⚠ WARNING : Harmful if swallowed. Irritating to eyes and skin. KEEP OUT OF REACH OF
CHILDREN. Avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with
plenty of water and seek medical advice. After contact with skin, wash immediately with plenty of
water. If swallowed, seek medical advice immediately and show this container or label.
Descaler Ingredients: Sulfamic Acid. Country of origin USA. See www.proboil.co.uk for furt er information and SDS.
⚠ The descaling chemical is acidic and should only be used and handled as indicated, care should
be taken not to ingest, expose to skin, clothing or decorative surfaces. Take care when touching all
surfaces and when disconnecting or connecting hoses they may be hot and or generate steam, you
must use personal protective wear to prevent accidental scalding.
 During the descaling process you will need to disconnect the boiler power, this may reset the filter life counter. If
your boiler is calcified it is also likely the filter cartridge is overdue replacement, if this is the case you should change the
filter after descaling the boiler.
1) Press and hold the P key for 1.5 seconds, this will turn the boiler into standby mode (note: temperature
information is not shown on screen in standby mode).
)
Turn on the 98°C water using the
Hotkey
and
run for at least
4
litres or until the stream
of water
runs fully cold.

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3)
Pull the mains power plug
(D)
out
from the socket on the left-hand face
of the boiler.
4)
Unscrew and detach the bl
ue inlet
wing nut connector (G) from the top
of the boiler (B).
5)
Firmly pull
/peel
the
silicone
rubber
high temperature output hose (K) off
from the red outlet wing nut (J)
connector.
6)
Lift up then pull the boiler
forwards
to
unhook the boiler from its keyhole slot
fixings away from the wall it is
mounted on and place it on the
cabinet floor.
7)
Unscrew and det
ach the red outlet
wing nut (J) connector from the top of
the boiler (C).
8) If the 3/8” rubber seal (I) becomes
detached from the red outlet wing nut
(J) connector then reinsert it the seal
inside connector (J).

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9) Remove the inlet meshed filter seal
(H) from the boiler inlet (B) or inlet
adaptor (G), rinse the washer in cold
water, and use a toothbrush to clean
any debris from it. If meshed seal (H)
is compressed inside inlet (B) or
adaptor (G) then use a cocktail stick
(or similar) to remove it.
9. Whilst taking care, lift the PROBOIL.4E out from the cabinet and place it on the countertop.
10. Tip the boiler upside down so the
boilers centre outlet (C) is over the
sink, you must empty the boiler as
much as possible of water and any
debris from the base of the tank, tip
the boiler back and forth gently to
hear how much water remains inside
if you are unsure.
 You can empty the boiler faster from the outlet (C) by depressing
the centre of the check valve insert found in the boiler inlet (B) whilst
the boiler is upside down using a blunt household object like a pencil.
11. Each bottle of PROBOIL descaling solution contains 00ml of descaling solution, one bottle should be enough to
descale the tank, however if you believe the tank to be heavily scaled or if you are unsure then use both the
00ml bottles supplied,
1 . Shake the descaler bottle(s) thoroughly before use, cow cut the top from the bottle nozzle(s) using sharp
scissors.

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13.
C
arefully squeeze the entire
contents of the bottle(s) into the
outlet (C) of the tank.
14. Place the PROBOIL boiler back on
its wall mounted key slot fixing
screws
15.
Reconnect all the removed parts from
the boiler in the reverse order listed
above. (Do not use a spanner or
overtig ten wingnut inlet and outlet
connectors G or J t ese s ould be
and tig t only)
Check that all rubber seals (I) and (H)
are in place (as previously connected)
before reconnecting.
16.
Fill the PROBOIL unit with cold water
using the
Hotkey
, keep the
Hotkey
in place until
you see water exit the
spout of the tap then turn it off immediately so the boiler is filled with cold water and descaling solution.
17. Press and hold the P key for 1.5 seconds, this will turn the boiler back on from “standby” mode.
18. Use the + and
-
key to change the target temperature on screen.
⚠ C ange t e pre-set water target temperature to 85°C, t is is t e optimal temperature to descale.
19.
Wait for the PROBOIL.
4E
unit to
display “READY” onscreen
0.
Take note of t e time and wait for no
longer t an a furt er 30 minutes maximum
for the descaler liquid to
work. It is normal for an odour to be present during this time.
1. Press and hold the P key for 1.5 seconds, this will turn the boiler back into “standby” mode.