Nibe F110 User manual

User manual
Hot water heat pump
NIBE F110
LEK
UHB EN 2344-1
731477

Quick guide
Navigation Ok button (confirm/select)
Back button (back/undo/exit)
Up/down buttons
(move/increase/reduce)
A detailed explanation of the button functions can be found on page 9.
How to scroll through menus and make different settings is described on page 10.
Increase hot water volume
true
off
2X
1X
To temporarily increase the amount of hot water, first press the down button to mark menu 2 (water droplet) and then
press the OK button twice. Read more about the settings on page 13.
In event of disturbances in comfort
If a disturbance in comfort of any type occurs there are some measures that can be taken before you need to contact
your installer. See page 19 for instructions.

41 Important information
4Installation data
5Safety information
5Serial number
6F110 – An excellent choice
72 The heat pump – the heart of the house
8Heat pump function
9Contact with F110
11Maintenance of F110
123 F110 – at your service
12Set the ventilation
13Set the hot water capacity
15Get information
17Adjust the heat pump
194 Disturbances in comfort
19Info menu
19Manage alarm
19Troubleshooting
215 Technical data
226 Glossary
24Item register
27Contact information
3Table of ContentsNIBE F110
Table of Contents

Installation data
F110Product
Serial number
Installation date
Installer
SetFact.
sett.
NameNo.
70%Exhaust air installation (fan sp. exhaust air, normal)5.1.5
Serial number must always be given.
Certification that the installation is carried out according to instructions in
the accompanying installer manual and applicable regulations.
_________________________Signed__________________Date
NIBE F110Chapter 1 | Important information4
Important information

Safety information
This appliance can be used by children
aged from 8 years and above and per-
sons with reduced physical, sensory or
mental capabilities or lack of experience
and knowledge if they have been given
supervision or instruction concerning use
of the appliance in a safe way and under-
stand the hazards involved. Children shall
not play with the appliance. Cleaning and
user maintenance shall not be made by
children without supervision.
This is an original manual. It may not be
translated without the approval of NIBE.
Rights to make any design or technical
modifications are reserved.
©NIBE 2023.
If the supply cable is damaged, only NIBE,
its service representative or similar author-
ised person may replace it to prevent any
danger and damage.
SYMBOLS
NOTE
This symbol indicates danger to person or machine.
Caution
This symbol indicates important information about
what you should observe when maintaining your
installation.
TIP
This symbol indicates tips on how to facilitate us-
ing the product.
Serial number
Serial number
The serial number can be found at the bottom right of the
front cover.
Caution
You need the product's (14 digit) serial number for
servicing and support.
5Chapter 1 | Important informationNIBE F110

F110 – An excellent choice
F110 is a heat pump that has been developed to supply your
house with ventilation and hot water in a cost-effective and
environmentally friendly manner.
With integrated water heater, immersion heater and control
system, reliable and economical hot water production is
obtained.
F110 is equipped with a control computer to give you good
comfort, good economy and safe operation. Information
about status, operating time and all temperatures in the
heat pump are shown on the clear display.
EXCELLENT PROPERTIES FOR F110:
•EU directive
Conventional incandescent bulbs were phased out of the
market several years ago. This also now applies to electric
water heaters.
Heat pump water heaters are one way of satisfying the
new EU directive and F110 has been developed specifically
to fulfil that directive.
F110 consumes approximately 1/3 of the power of a cor-
responding conventional electrical water heater. This gives
great savings and F110 therefore pays for itself quickly.
•Integrated water heater
There is a water heater integrated in the heat pump, which
is insulated with environmentally friendly cellular plastic
for minimal heat loss.
•Scheduling hot water and ventilation
Hot water and ventilation can be scheduled for each day
of the week or for longer periods (vacation).
•Display with user instructions
The heat pump has a display with easy-to-understand
menus that facilitate setting a comfortable hot water level.
•Simple troubleshooting
In the event of a fault, the heat pump display shows what
happened.
NIBE F110Chapter 1 | Important information6

Tappvarmvatten
Köldmedium
Luft
Förångare
Kondensor 80 °C
22 °C0 °C
5 °C0 °C
55 °C45 °C
Expansionsventil Kompressor
LEK
A
D
F
B
C
E
G
Värmebärare
Köldmedium
Köldbärare
Värmekälla
Förångare
Kondensor 100 °C
0 °C-3 °C
-2 °C
50 °C40 °C
Expansionsventil Kompressor
A
D
F
H
B
C
E
G
Air
Refrigerant
Evaporator
Condenser
Expansion valve Compressor
1
2
3
Tappvarmvatten
Köldmedium
Luft
Förångare
Kondensor 80 °C
22 °C0 °C
5 °C0 °C
55 °C45 °C
Expansionsventil Kompressor
LEK
A
D
F
B
C
E
G
Air
Domestic hot water
The temperatures are only examples and may vary between
different installations and time of year.
7Chapter 2 | The heat pump – the heart of the houseNIBE F110
The heat pump – the heart of the
house

Heat pump function
The heat pump uses the heat that is in the air to heat up the
domestic hot water. The conversion of the air’s energy to
hot water occurs in three different circuits. Heating energy
is recovered from the outgoing exhaust air, surrounding in-
door air or outdoor air (1) and transported to the heat pump.
The heat pump raises the recovered heat’s low temperature
to a high temperature in the refrigerant circuit (2). The heat
is then distributed to the water heater (3).
The air
Air is transferred from outdoors or from the rooms via ducts
to the heat pump.
A
The fan then routes the air to the heat pump’s evaporator.
Here, the air releases the heating energy to the brine and the
air's temperature drops significantly. The cold air is then
blown out of the house or into a room in the house.
B
Refrigerant circuit
A liquid, a refrigerant, circulates in a closed system in the
heat pump which also passes the evaporator. The refrigerant
has a very low boiling point. In the evaporator the refrigerant
receives the heat energy from the air and starts to boil.
C
The gas that is produced during boiling is routed into an
electrically powered compressor. When the gas is com-
pressed, the pressure increases and the gas’s temperature
increases considerably, from approx. 5°C to approx. 80°C.
D
From the compressor, gas is forced into a heat exchanger,
condenser, where it releases heat energy to the domestic
hot water, whereupon the gas is cooled and condenses to a
liquid form again.
E
As the pressure is still high, the refrigerant can pass an ex-
pansion valve, where the pressure drops so that the refriger-
ant returns to its original temperature. The refrigerant has
now completed a full cycle. It is routed to the evaporator
again and the process is repeated.
F
Domestic hot water
The heat energy that the refrigerant produces in the condens-
er is retrieved by the domestic hot water which is heated to
the set temperature.
G
NIBE F110Chapter 2 | The heat pump – the heart of the house8

Contact with F110
DISPLAY UNIT
A
B C D E
2023-06-08 08:15
There is a display unit on F110, which is used to communicate
with F110. Here you:
•set the hot water and ventilation, if any, as well as adjust
the heat pump to your needs.
•receive information about settings, status and events.
•see different types of alarms.
Display
Instructions, settings and operational information are
shown on the display.
A
Stand-by button
F110 can be switched to stand-by mode using the
standby button. The compressor, immersion heater and
fan are then switched off. Press the button for three
seconds to activate/deactivate standby mode.
B
Back button
The back button is used to:
•go back to the previous menu.
•change a setting that has not been confirmed.
C
OK button
The OK button is used to:
•confirm selections of sub menus/options/set values.
D
Up and down buttons
With the up and down buttons you can:
•scroll in menus and between options.
•increase and decrease the values.
E
MENU SYSTEM
When F110 is started you come to the information menu.
Basic information about the heat pump status is shown here.
Clock
Hot water temp.
Date
Status icons
08:152023-06-08
The information menu shows:
•on starting.
•when the back button in the main menu is pressed.
•after 15 minutes of inactivity.
Press any button to go to the main menu.
Main menu
ventilation
HOT WATER
INFO
MY SYSTEM
The menu system's main menus are shown here.
MENU 1 - VENTILATION
Setting the ventilation. See page 12.
MENU 2 - HOT WATER
Setting and scheduling hot water production. See page 13.
MENU 3 - INFO
Display of temperatures and other operating information
and access to the alarm log. See page 15.
MENU 4 - MY SYSTEM
Setting time, date, language, operating mode etc. See page
17.
9Chapter 2 | The heat pump – the heart of the houseNIBE F110

Symbols in the display
The following symbols may appear on the display during
operation.
DescriptionSymbol
This symbol is displayed when the compressor is
operating.
This symbol is displayed when the additional heat
is operating.
This symbol appears when the speed of the fan is
changed from its normal setting.
This symbol appears when lux mode for hot water
is activated or when periodic increase is active.
This symbol appears when "scheduling" is activated
in menu 2.3.
This symbol appears when "holiday setting" is ac-
tivated in menu 4.7.
Operation
To move the cursor, press the up or down button. The
marked position is brighter and/or has a turned up tab.
Selecting menu
To advance in the menu system select a sub-menu by
marking it by using the up and down buttons and then
pressing the OK button.
Selecting options
auto
add. heat only
op. mode 4.2
Selectable options
In an options menu the current selected option is indicated
by a green tick.
To select another option:
Mark the applicable option using the up or down button.
One of the options is pre-selected (white).
1.
Press the OK button to confirm the selected option.
The selected option has a green tick.
2.
Setting a value
periodic increase 2.9.1
activated
period days
Next increase
Adjustable value
2023-06-08
To set a value:
Mark the value you want to set using the up or
down button.
1.
Press the OK button. The background of the value
becomes green, which means that you have ac-
cessed the setting mode.
2.
Press the up button to increase the value or the
down button to reduce the value.
3.
Press the OK button to confirm the value you have
set. To undo and return to the original value, press
the back button.
4.
Scroll through the windows
A menu can consist of several windows. Mark the page
number, using the up and down keys, in the upper left corner
and then press the OK button to switch between the win-
dows.
Current menu
window
Number of
windows in the
menu
Scroll through the windows in the start guide
Arrows to scroll through windows in the start guide
start guide 5.7
time & date
1. Mark, using the up and down keys, one of the arrows in
the top left corner (at the page number).
2. Press the OK button to scroll between the windows in
the start guide.
NIBE F110Chapter 2 | The heat pump – the heart of the house10

Maintenance of F110
REGULAR CHECKS
Your heat pump requires minimal maintenance after com-
missioning. On the other hand, it is recommended that you
check your installation regularly.
If something unusual occurs, messages about the malfunc-
tion appear in the display in the form of different alarm texts.
See alarm management on page 19.
Exhaust air installation
Cleaning the ventilation devices
The building’s ventilation
devices should be cleaned
regularly with, for example, a
small brush to maintain the
correct ventilation.
The device settings must not
be changed.
NOTE
If you take down more than one ventilation device
for cleaning, do not mix them up.
Cleaning the air filter
The air filter in F110 has to be cleaned regularly; how often
depends, for example, on the quantity of particles in the
ventilation air. Test, to find out what is most appropriate for
your installation.
Caution
The efficiency of the installation can be impaired
by a dirty air filter.
1. Switch off the fan in F110 by holding the standby button
for 3 seconds. (Display turns off.)
2. Pull out the filter cassette.
3. Remove the filter and shake/vacuum it clean.
4. Check the condition of the filter and replace if needed.
5. Carry out assembly in reverse order.
Even if the filter looks clean, dirt collects in it and this affects
the efficiency of the filter. For this reason, replace the filter
at least once a year. A new filter can be ordered via a dealer
for NIBE or at nibe.eu.
NOTE
Water or other liquids must not be used for clean-
ing.
LEK
Filter
Safety valve
The safety valve must be checked about four times a year.
The safety valve is reached by removing the front panel.
1. Open the valve by turning the knob anti-clockwise
carefully.
2. Check that water flows through the overflow pipe. When
water stops coming out of the overflow pipe the valve
is defective and must be replaced.
3. Close the valve by releasing it. If it does not close auto-
matically when released, turn it anti-clockwise slightly.
The safety valve sometimes releases a little water after hot
water has been used. This discharge is caused by the expan-
sion through heating of cold water entering the water
heater, resulting in a pressure increase, whereby the safety
valve opens.
LEK
LEK
LEK
Safety valve
EMPTYING
Drain the heat pump of water as follows:
1. Switch off the circuit fuse or pull out the plug.
2. Close the shut-off valve (turn clockwise).
3. Open the safety/drain valve (turn the knob slowly anti-
clockwise until it remains in the raised position).
4. Ensure air supply by opening all hot water taps.
Caution
The heat pump is started when the supply cable
is connected to an earthed socket.
11Chapter 2 | The heat pump – the heart of the houseNIBE F110

Set the ventilation
MENU 1 - VENTILATION
Setting range: normal and speed 1-4
Default value: normal
normal (70%)
ventilation 1
fan speed 1 (30%)
fan speed 2 (50%)
fan speed 3 (70%)
fan speed 4 (90%)
This menu is only
shown with exhaust
air installation.
The ventilation in the
accommodation can
be temporarily in-
creased or reduced
here.
When a new speed
has been selected, a countdown is initiated. After 4 hours,
the ventilation speed returns to the normal setting.
The fan speed is shown in brackets (in percent) after each
speed alternative.
TIP
If longer time changes are required use the holiday
function.
Caution
The heat pump requires a minimum ventilation
flow in order to work properly. An insufficient
ventilation flow can result in an alarm and blocking
of compressor operation.
NIBE F110Chapter 3 | F110 – at your service12
F110 – at your service

Set the hot water capacity
OVERVIEW
Sub-menus
temporary lux
HOT WATER 2
comfort mode
scheduling
advanced
active
economy
off
For the menu HOT
WATER there are
several sub-menus.
Status information for
the relevant menu
can be found on the
display to the right of
the menus.
temporary lux Activ-
ation of temporary increase in the hot water temperature.
Status information displays “off" or what length of time of
the temporary temperature increase remains.
comfort mode Setting hot water comfort. The status inform-
ation displays what mode is selected, "economy", "normal"
or "luxury".
scheduling Scheduling hot water comfort. Status informa-
tion "active" displays if the scheduling is active right now,
the status information "set" displays if the scheduling is set
but not active.
advanced Setting periodic increase in the hot water tem-
perature.
MENU 2.1 - TEMPORARY LUX
Setting range: 3, 6 and 12 hours and mode "off" and "one
time increase"
Default value: "off"
off
temporary lux 2.1
3 hrs
6 hrs
12 hrs
When hot water re-
quirement has tempor-
arily increased this
menu can be used to
select an increase in
the hot water temper-
ature to lux mode for
a selectable time.
Caution
If comfort mode "luxury" is selected in menu 2.2
no further increase can be carried out.
The function is activated immediately when a time period
is selected and confirmed using the OK button. The remain-
ing time for the selected setting is shown to the right.
When the time has run out F110 returns to the mode set in
menu 2.2.
Select “off" to switch off temporary lux .
MENU 2.2 - COMFORT MODE
Setting range: economy, normal, luxury
Default value: normal
economy
comfort mode 2.2
normal
luxury
The difference between the selectable modes is the temper-
ature of the hot tap water. Higher temperature means that
the hot water lasts longer.
economy: This mode produces less hot water than the oth-
ers, but is more economical.
normal: Normal mode gives a larger amount of hot water
and is suitable for most households.
luxury: Lux mode gives the greatest possible amount of hot
water. In this mode, the immersion heater is used to heat
hot water as well as the compressor, which increases oper-
ating costs.
13Chapter 3 | F110 – at your serviceNIBE F110

MENU 2.3 - SCHEDULING
Time periodDay
Activated
Comfort mode
scheduling 2.3
activated
all
mon
tues
wed
thur
fri
sat
sun
economy
economy
economy
economy
economy
economy
economy
05:30
05:30
05:30
05:30
05:30
05:30
05:30
06:00
06:00
06:00
06:00
06:00
06:00
06:00
What hot water comfort the heat pump is to work with can
be scheduled here.
Scheduling is activated/deactivated by ticking/unticking"ac-
tivated". Set times are not affected at deactivation.
Activated: Scheduling for the selected period is activated
here. Set times are not affected at deactivation.
Day: Select which day or days of the week the scheduling
is to apply to here. To remove the scheduling for a particular
day, the time for that day must be reset by setting the start
time to the same as the stop time. If the row "all" is used, all
days in the period are set according to that row.
Time period: The start and stop time for the selected day
for scheduling are selected here.
Comfort mode: Set the hot water comfort that is to apply
during scheduling here.
TIP
If you wish to set similar scheduling for every day
of the week start by filling in “all” and then chan-
ging the desired days.
Caution
If the stop time is earlier in the day than the start
time it means that the period extends past mid-
night.
Scheduling always starts on the date that the start
time is set for.
If time periods overlap each other at midnight, the
time period that starts after midnight is prioritised.
MENU 2.9 - ADVANCED
advanced 2.9
periodic increase
Menu advanced has
orange text and is in-
tended for the ad-
vanced user. This
menu has a sub-
menu.
MENU 2.9.1 - PERIODIC INCREASE
period
Setting range: 1 - 90 days
Factory setting: activated, 14 days
periodic increase 2.9.1
activated
period days
Next increase
To prevent bacterial
growth in the water
heater, the com-
pressor and the im-
mersion heater can
increase the hot wa-
ter temperature for a
short time at regular
intervals.
The length of time between increases can be selected here.
The time can be set between 1 and 90 days. Factory setting
is 14 days. Tick/untick "activated" to start/switch off the
function.
NIBE F110Chapter 3 | F110 – at your service14

Get information
OVERVIEW
Sub-menus
service info
INFO 3
compressor info
additional heat info
alarm log
For the menu INFO
there are several sub-
menus. No settings can
be made in these
menus, they just dis-
play information.
service info shows
temperature levels and
software versions in
the heat pump.
compressor info shows operating times, number of starts
and status for the compressor.
add. heat info shows information about additional heat
operating times and status.
alarm log displays the latest alarm and information about
the heat pump when the alarm occurred.
MENU 3.1 - SERVICE INFO
service info 3.1
status internal add.
set max electrical add.
fuse size
current L1
current L2
current L3
EB100
off
0.4
0.4
5
0.4
Information about the actual operating status of the installation
(e.g. current temperatures etc.) can be obtained here. No changes
can be made.
The information is on several pages. Push the up and down buttons
to scroll between the pages.
Symbols in this menu:
AdditionCompressor
Periodic increase or
lux mode for hot wa-
ter
Ventilation (only
shown with exhaust
air installation)
Holiday settingScheduling
MENU 3.2 - COMPRESSOR INFO
compressor info 3.2
status:
number of starts:
tot. operating time:
active
321 hrs
24
Information about the compressor’s operating status and
statistics can be obtained here. No changes can be made.
MENU 3.3 - ADD. HEAT INFO
additional heat info 3.3
status:
tot. operating time:
off
25 hrs
Information about the
additional heat’s oper-
ating status and stat-
istics can be obtained
here. No changes can
be made.
MENU 3.4 - ALARM LOG
alarm 12
alarm 158
alarm log 3.4
To facilitate fault-finding the heat pump operating status
at alarm alerts is stored here. You can see information for
the 10 most recent alarms.
To view the run status in the event of an alarm, mark the
alarm and press the OK button.
alarm log 3.4
alarm 158
15Chapter 3 | F110 – at your serviceNIBE F110

Information about an alarm.
NIBE F110Chapter 3 | F110 – at your service16

Adjust the heat pump
OVERVIEW
Sub-menus
time & date
MY SYSTEM 4
language
holiday setting
advanced
Swedish
autoop. mode
off
15:43
For the menu MY
SYSTEM there are sev-
eral sub-menus. Status
information for the rel-
evant menu can be
found on the display to
the right of the menus.
op. mode Activation
of manual or automatic
operating mode. The status information shows the selected
operating mode.
time & date Setting current time and date. Status informa-
tion displays the time.
language Select the language for the display here. The
status information shows the selected language.
holiday setting Vacation scheduling hot water and ventila-
tion. Status information "set" is displayed if you set a vaca-
tion schedule but it is not active at the moment, "active" is
displayed if any part of the vacation schedule is active,
otherwise it displays " off".
alarm Alarms can be reset here.
advanced Resetting all settings to factory default values.
MENU 4.2 - OP. MODE
op. mode
Setting range: auto, add. heat only
Default value: auto
auto
add. heat only
op. mode 4.2
The heat pump operating mode is usually set to "auto". It is
also possible to set the heat pump to "add. heat only", but
only when additional heat is used.
Change the operating mode by marking the desired mode
and pressing the OK button.
Operating mode auto
In this operating mode the heat pump automatically selects
what functions are permitted.
Operating mode add. heat only
In this operating mode the compressor is not active, only
additional heat is used.
Caution
If you choose mode "add. heat only" the com-
pressor is deselected and there is a higher operat-
ing cost.
MENU 4.4 - TIME & DATE
time & date 4.4
day
year
month
12/24 hrs
Set time and date and
display mode here.
MENU 4.6 - LANGUAGE
language 4.6
Choose the language
that you want the in-
formation to be dis-
played in here.
MENU 4.7 - HOLIDAY SETTING
holiday setting 4.7
activated
start date
stop date
normal
hot water comfort
ventilation
economy
To reduce energy consumption you can schedule a reduction
in hot water temperature and any ventilation.
The vacation scheduling starts at 00:00 on the start date
and stops at 23:59 on the stop date.
TIP
Finish the holiday setting about a day before your
return, so the hot water temperature has time to
regain usual levels.
MENU 4.8 - ALARM
17Chapter 3 | F110 – at your serviceNIBE F110

alarm 4.8
alarm 291
charge pump
aid mode
reset alarm
no yes
This menu is only
available if an alarm
has occurred.
Here you can reset
any alarms that have
occurred in F110.
MENU 4.9 - ADVANCED
advanced 4.9
factory setting
Menu advanced has orange text and is intended for the
advanced user. This menu has a sub-menu.
MENU 4.9.4 - FACTORY SETTING
factory setting
factory setting 4.9.4
yesno
All settings that are
available to the user
(including advanced
menus) can be reset
to default values here.
After factory settings,
user settings must be
reset.
NIBE F110Chapter 3 | F110 – at your service18

In most cases, the heat pump notes operational interference
(operational interference can lead to disturbance in hot
water comfort) and indicates this with an alarm in the dis-
play.
Info menu
All the heat pump measurement values are gathered under
menu 3.1 in the heat pump menu system. Looking through
the values in this menu can often simplify finding the source
of the fault.
Manage alarm
alarm 291
charge pump
aid mode
reset alarm
no yes
In the event of an alarm, a malfunction has occurred, which
is indicated by an alarm symbol in the display.
ALARM
In the event of an alarm a malfunction has occurred that
F110 cannot rectify itself. The display shows what type of
alarm it is and lets you reset the alarm. You can also choose
to set the heat pump to rescue mode
reset alarm In many cases it is sufficient to select "reset
alarm" to correct the problem that caused the alarm. If the
alarm recurs, the problem that caused the alarm remains.
If the alarm initially disappears and then returns, you should
contact your installer.
aid mode "aid mode” is a type of emergency mode. This
means that the heat pump produces hot water despite there
being some kind of problem.
This can mean that the heat pump's compressor is not run-
ning. In this case the immersion heater produces hot water.
Caution
Selecting ”aid mode” is not the same as correcting
the problem that caused the alarm. The alarm
symbol will remain displayed.
If the alarm does not reset, contact your installer for suitable
remedial action.
Caution
You need the product's serial number for servicing
and support.
Troubleshooting
If the operational interference is not shown in the display
the following tips can be used:
BASIC ACTIONS
Start by checking the following items:
•Group and main fuses of the accommodation.
•The property's earth circuit breaker.
•Heat pump's earth-fault breaker.
LOW HOT WATER TEMPERATURE OR A LACK OF
HOT WATER
•Large hot water consumption.
–Wait until the hot water has heated up. Temporarily in-
creased hot water capacity (temporary lux) can be ac-
tivated in menu 2.1.
•Too low hot water setting.
–Enter menu 2.2 and select a higher comfort mode.
•Filter clogged (installation with ambient air)
–Clean or replace the filter.
•Thermostat setting too low
–Contact your installer!
•Low or a lack of ventilation (exhaust air installation)
–See section "Low or a lack of ventilation".
•Applies to incoming air blocked (outdoor air installation)
–Clean the grille.
LOW OR A LACK OF VENTILATION (EXHAUST
AIR INSTALLATION)
•Filter blocked.
–Clean or replace the filter.
•The ventilation is not adjusted.
–Order ventilation adjustment.
•Exhaust air device blocked or throttled down too much.
–Check and clean the exhaust air devices.
•Fan speed in reduced mode.
–Enter menu 1 and select "normal".
LOUD OR DISTURBING VENTILATION (EXHAUST
AIR INSTALLATION)
•Filter blocked.
19Chapter 4 | Disturbances in comfortNIBE F110
Disturbances in comfort

–Clean or replace the filter.
•The ventilation is not adjusted.
–Order ventilation adjustment.
•Fan speed in forced mode.
–Enter menu 1 and select "normal".
GURGLING SOUND
•Not enough water in the overflow cup.
–Top up the water in the overflow cup.
NIBE F110Chapter 4 | Disturbances in comfort20