Ochsner AIR FALCON 212 User manual

TRANSLATION OF THE ORIGINAL MANUAL
HIGH EFFICIENCY AIR/WATER HEAT PUMPS
OPERATING MANUAL
►
AIR FALCON 212
VALID FROM OTS APP SOFTWARE VERSION V03.02.XXX

CONTENTS
2 www.ochsner.com | BA-982018-AIR FALCON-ih-EN
PLEASE NOTE
1. Information on documentation 4
1.1 Safety information 5
1.1.1 Arrangement of safety information 5
1.1.2 Symbols and possible dangers 5
1.1.3 Keywords 5
1.2 Other symbols 5
1.3 Units of measurement 5
1.4 Specied performance gures 5
2. Safety 5
2.1 Intended use 5
2.2 General safety information 5
3. How split systems work 8
4. Appliance description 10
4.1 Scope of delivery 10
4.2 Indoor unit hydraulics 10
4.3 Appliance components 10
4.3 .1 Indoor unit 10
4.3.2 Outdoor unit 11
4.3.3 Heat pump control unit 11
4.4 Name plate 11
5. Running costs 12
5.1 Flow temperatures 12
5.2 Ventilation 12
5.3 Heating setback program 12
6. Maintenance and care 12
6.1 General 12
6.2 Testing the safety valve 13
6.3 Installation in coastal areas 13
6.4 Maintenance contract 13
7. Problem solving 14
7.1 Problem solving by appliance user 14
7. 2 Problem solving by qualied contractor 14
7. 2 .1 Resetting the high limit safety cut-out 14
8. Shutdown 15
OPER ATION
9. Controller description 16
9.1 System components 16
9.2 LED display on user interface 16
9.3 Main screen 16
9.3 .1 Main screen for heating circuits 16
9.3.2 Main screen for DHW circuits 17
9.3.3 Name 17
9.3.4 Current temperature of heating circuit/DHW circuit 17
9.3.5 Current relative humidity 17
9.3.6 Status of heat pump 17
9.3.7 Menu 17
9.3.8 Current DHW temperature 17
10. OTS app 18
10.1 Download the app and register 18
10.2 App management 18
10.2.1 Opening app management 18
10.3 Test mode 18
10.3.1 Setting up test mode 19
11. Heating circuit 19
11.1 Setting the room temperature 19
11. 2 Operating program 20
11. 2.1 Switching the heating circuit on/o󰀨 20
11.3 Setpoints 21
11. 3.1 Heating mode 21
11.3.2 Cooling mode 21
11.3.3 Setting target values 22
11.4 Seasonal operation 22
11.4.1 Setting seasonal operation 22
11.5 Weather-compensated controller 23
11. 5.1 Heating curve 23
11.5.2 Cooling curve 26
11.6 Enabling heating/cooling 29
11.7 Room temperature compensation 29
11.8 Frost protection 29
11.9 Operating data 29
11.9.1 Viewing operating data 30
12. DHW circuit 30
12.1 Setting the DHW temperature 30
12.2 Operating program 31
12.2.1 Setting the operating program 31
12.3 Target values and switching di󰀨erentials 32
12.3.1 Setting target values and switching di󰀨erentials 32
12.3.2 Switching o󰀨 the DHW circuit 33
12.4 Anti-legionella mode 33
12.5 DHW heat input 34
12.6 Frost protection 34
12.7 Operating data 34
12 .7.1 Viewing operating data 35
13. Time program 35
13.1 Setting a time program 35
13.1.1 Example of a DHW time program 37
14. Electric auxiliary heater 38
14.1 Position of the auxiliary heater 38
14.2 Operating program 38
14. 2.1 Setting the operating program 38
14.3 Operating data 38
14. 3.1 Electric auxiliary heater internal 38
14.3.2 Bu󰀨er tank electric auxiliary heater 39
14.3.3 DHW tank electric auxiliary heater 39
14.3.4 Viewing operating data 39
15. Bivalent point 39
16. Smart grid 40
16.1 Smart grid operating status 40
16.1.1 Viewing the operating status 40
16.2 Congurations 40
16.3 Smart grid in the heating circuit 40
16.3.1 Priority mode 40
16.3.2 Forced draw-o󰀨 40
16.4 Smart grid in DHW mode 40
16.4.1 Priority mode 40
16.4.2 Forced draw-o󰀨 41
16.5 Bu󰀨er tank 41
16.5.1 Priority mode 41
16.5.2 Forced draw-o󰀨 41
17. Heat management 42
17.1 Operating data 42
17.1.1 Viewing operating data 42
17. 2 Output demand 42
17. 3 Statistics 42
17. 3.1 Overview 43
17. 3 . 2 Total values 43
17.3.3 Viewing statistics 44
18. Modbus communication 44
18 .1 Integration 44
18 .1.1 Control via building management system 44
18 .1. 2 Transfer of information to the heat pump 44
18 .1.3 Transfer of information to the building management sys-
tem 44
19. Standby protection 44
20. Status 45
20.1 Viewing the status 45
21. Rectifying faults 45
21.1 Fault messages 45
21.1.1 Charge aborted 47
21.2 Acknowledging faults 47
21.3 Appliance reset 48
21.4 Re-inputting available elements 48
21.5 System lockout 48
21.5 .1 Emergency mode 48
21.5.2 System failure 49
21.6 Reporting errors and faults 49

BA-982018-AIR FALCON-ih-EN | www.ochsner.com 3
CONTENTS
22. Data connection to cloud 49
23. OTS systems and user administration 49
23.1 Registration 50
23.2 System overview 50
23.2.1 User administration 50
23.3 Changing user data 50
23.3.1 Fault detection and notication 50
23.4 Change password 50
24. System information 51
24.1 Date and time 51
24.2 Viewing/setting system information 51
25. Settings 51
25.1 Language and location 51
25.1.1 Setting the language and location 51
25.2 Company information 51
25. 2.1 Viewing company information 51
26. Software updates 51
26.1 OTS controller 51
26.2 App software 52
26.3 Checking for updates 52
26.4 Current operating manual 52
27. Expert mode 52
27.1 Logging in and out 52
27.2 Heating circuit 52
27.2.1 Operating program in expert mode 52
27.2.2 Settings in expert mode 53
27.2.3 Heating curve 55
27.2.4 Cooling curve 55
27.3 DHW circuit 56
27.3.1 Settings in expert mode 56
27.4 Heat management 57
27.4.1 Output control 57
27.4.2 Viewing output control 58
27.4.3 Bu󰀨er tank 58
27.4.4 Statistics 59
27.5 Smart grid 60
27.5.1 Parameters in heating/cooling mode 60
27.5.2 Parameters for the bu󰀨er tank 61
27.6 Status 61
27.7 Screed drying program 61
27.7.1 Activating the screed drying program 61
2 7.7. 2 Adjusting and starting the screed drying program 62
27.7. 3 Monitoring the screed drying program 63
27.7. 4 Fault 64
27.8 Relay test 64
27.8.1 Performing a relay test 64
27.9 Fault history 64
28. DHW circulation pump 66
28.1 Setting the operating program 66
28.2 Time program 66
28.3 Time interval 66
28.3.1 Setting parameters 66
29. Heat pump 66
29.1 Operating program 66
29.1.1 Setting the operating program 67
29.2 Operating data 67
29. 2.1 Viewing operating data 67
30. Silent mode 67
30.1 Adjusting silent mode 68
31. Cascade 69
31.1 Visualisation on user interface 69
32. Factory settings 70
33. Function expansion through auxiliary modules 72
33 .1 DHW circulation pump 72
33 .1.1 Return temperature 72
33.2 Pool heating system 73
33 .2.1 Operating program 73
33.2.2 Parameters 73
33.2.3 Operating data 73
33.2.4 Relay test 73
33.3 Auxiliary energy generator 74
33.3.1 Operating program 74
33.3.2 Parameters 74
33.3.3 Operating data 76
33.3.4 Relay test 76
ERP DATA
ENVIRONMENT AND RECYCLING

4 www.ochsner.com | BA-982018-AIR FALCON-sh-EN
Information on documentation
PLEASE NOTE
►Connection to the mains electricity supply must take
the form of a xed connection. It must be possible
to isolate the appliance from the mains supply with
a multi pole switch which has a gap of at least 3 mm
across all poles.
►You must not disconnect the power supply even if
heating is not required. If the power supply is discon-
nected, active frost protection of the system cannot
be guaranteed.
►Observe the minimum clearances in order to ensure
fault-free operation of the appliance and to allow for
maintenance work on the appliance.
►Maintenance work such as checking the electrical
safety of the appliance may only be carried out by a
qualied contractor.
►We recommend an annual inspection (to assess the
appliance‘s actual state) and if necessary any main-
tenance (to reinstate it to its expected state) by a
qualied contractor.
►We guarantee trouble-free function and operational
reliability only if the original accessories and spare
parts intended for the appliance are used.
►Observe all applicable national and regional regula-
tions and provisions.
►The appliance is tted with an electric auxiliary heat-
er. The auxiliary heater is not normally switched on
until the bivalent point is undershot. In exceptional
cases the auxiliary heater may also switch on irre-
spective of the bivalent point:
- The auxiliary heater switches on if the heat
pump is not enabled as the heat generator.
This can happen if there is a fault or the limits
of use have been exceeded.
- The auxiliary heater switches on if more output
is required than the heat pump can provide.
This can happen if the heat pump is already
close to reaching the limits of use.
1. Information on documentation
This documentation is aimed at appliance users and qual-
ied contractors.
Unless otherwise stated, all content of this documentation
applies to the following appliances:
Appliance Article number
AIR FALCON 212 C11A M1-5 287400 V
AIR FALCON 212 C11B M1-5 287410 V
This documentation describes appliance features that are
not always in the standard scope of delivery. Therefore
there may be di󰀨erences to your specic appliance.
The documentation corresponds to the software version
described on the title page. The software for the heat pump
system will be updated automatically as long as there is
a su󰀩ciently fast internet connection. The latest version
of the operating manual can be found on the OCHSNER
homepage in the download area.
https://www.ochsner.com/en/service/download
Note
Read all of this documentation carefully before us-
ing the appliance and keep the documents safe.
Pass this documentation on to any new user.
Note
A separate manual is available for design and
installation. This document is attached to the ma-
chine in printed form or can be found in digital form
on the OCHSNER homepage in the download ar-
ea.

BA-982018-AIR FALCON-sh-EN | www.ochsner.com 5
Safety
1.1 Safety information
1.1.1 Arrangement of safety information
KEYWORD: Type of risk
The possible consequences of not observing the
safety information are shown here.
»
Instructions for action to remedy or remove
the source of danger are shown here.
1.1.2 Symbols and possible dangers
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
Material damage
(appliance, consequential and environmental dam-
age)
1.1.3 Keywords
Keyword Meaning
DANGER Failure to observe this information will result in seri-
ous injury or death.
WARNING Failure to observe this information may result in se-
rious injury or death.
CAUTION Failure to observe this information may result in
non-serious or minor injury.
1.2 Other symbols
►This triangular symbol is used as a bullet point.
»
These two arrows represent the symbol for an in-
struction. This shows that there is something you
must do. The action you must take is described step
by step.
 These symbols show you the level of a software
menu. In this example, 3 menu levels are
indicated.
Symbol Notes
Must not be disposed of with household waste
Low flammability
Symbol Notes
Additional documents are available and must be
used
1.3 Units of measurement
Note
In these documents, unless otherwise specied, all
lengths (e.g. in tables and illustrations) are given
in millimetres.
1.4 Specied performance gures
The performance gures of the appliance indicated in
these documents (text, tables and diagrams) have been
calculated according to standardised measurement con-
ditions. However, these measurement conditions often do
not completely correspond to the plant-specic conditions
applicable in the respective user‘s system. System-specic
factors that can a󰀨ect the conditions include, for example,
the specic design of the system, the age of the system
and the actual ow rates. For this reason, the stated perfor-
mance gures can di󰀨er from plant-specic performance
data.
The stated performance gures can be conrmed only if
the measurements taken for the appliance are carried out
under the relevant standardised measurement conditions.
2. Safety
2.1 Intended use
The appliance is intended for use in a domestic environ-
ment. It can safely be used by persons who have received
no instruction.
Any use of the appliance that is di󰀨erent from or goes
beyond this is not regarded as intended use. Intended use
also includes observing this documentation and the doc-
umentation for design, installation and any accessories
used.
2.2 General safety information
Observe the following safety information and instructions
for the appliance.
►Only qualied contractors should carry out the elec-
trical work and installation of this appliance. Only
qualied contractors may open the appliance.
►Commissioning of the appliance may be carried out
only by OCHSNER Customer Service or by customer
service partners authorised by OCHSNER.

6 www.ochsner.com | BA-982018-AIR FALCON-sh-EN
Safety
►The qualied contractor is responsible for compliance
with all relevant regulations during installation and
commissioning.
►Only operate the appliance when it is fully installed
and with all safety devices tted.
►Protect the appliance from dust and dirt during build-
ing work.
►Alterations to the appliance may only be carried out
by OCHSNER Customer Service or by customer ser-
vice partners authorised by OCHSNER.
►Functions to protect the heat pump can be enabled
using the controller. However, since the controller
is not certied as a safety device, safety measures
in case of breakdown or damage to the heat pump
(e.g. additional external switching of the safety devic-
es in use) must comply with local regulations.
►The heat pump has no separate ON/OFF switch. In
an emergency, the system must be shut down via the
specied safety devices.
►Before commencing electrical connection and instal-
lation work, the heat pump system must be isolated
from the power supply.
►The appliance must not be used as a step or plat-
form. Do not climb on the appliance or place any
loads on it.
►The appliance may be used by children aged 8 and
up and people with reduced physical, sensory or
mental capabilities or a lack of experience provided
that they are supervised or that they have been in-
structed on how to use the appliance safely and have
understood the possible risks. Children must not be
allowed to play with the appliance. Children must not
be allowed to clean or carry out user maintenance on
the appliance without supervision.
►If the system has obvious damage, makes a noticea-
ble noise or emits smoke, switch o󰀨 the system and
contact OCHSNER Customer Service immediately.
►Contact with refrigerant can cause serious injuries.
- In the event of a leak, avoid contact with the
refrigerant.
- Bear in mind that refrigerant can be odourless.
►Keep potential sources of ignition away from areas
where refrigerant could leak out.
Note
A rising and falling sound from the heat pump does
not indicate a fault. The noise is caused by chang-
es in the compressor speed.

BA-982018-AIR FALCON-sh-EN | www.ochsner.com 7

8 www.ochsner.com | 00_400_200_202_01_split_Funktionsweise-EN
How split systems work
3. How split systems work
An air/water heat pump extracts thermal energy from the
ambient air (low temperature) and transmits it together with
electrical drive energy in the form of useful heat (higher
temperature) to a heating and/or DHW circuit.
The heat pump consists of separate circuits linked together
via heat exchangers:
►Heat source circuit (extracting heat)
►Refrigerant circuit
►Heat sink circuit (supply of heat for room heating and/
or DHW)
Outdoor air is a heat source that is available everywhere
in unlimited amounts and can be utilised without a permit.
It is especially suitable for retrot projects.
A split system consists of an indoor unit and a separately
installed outdoor unit. The outdoor air is routed through the
outdoor unit by means of a fan. The indoor and outdoor
units are connected through refrigerant lines.
Due to the defrosting function integrated into OCHSNER
air/water heat pumps, the system also operates awlessly
at temperatures below -15°C.
For air/water heat pumps, the most e󰀩cient and therefore
most common operating mode is bivalent parallel opera-
tion.
Due to the integral defrosting function, monovalent oper-
ating mode is also theoretically possible. However, as the
heating output of an air/water heat pump at an outdoor
temperature of +15°C is approx. triple the heating output
at -15°C, such systems would be vastly oversized for opera-
tion in spring and autumn and therefore not recommended.
1 Evaporator (outdoor unit)
2 Compressor
3 Condenser (plate heat exchanger)
4 Expansion valve
5 Heat sink (heating, DHW)

00_400_200_202_01_split_Funktionsweise-EN | www.ochsner.com 9
How split systems work

10 www.ochsner.com | 00_200_202_08_02_001-EN
Appliance description
4. Appliance description
4.1 Scope of delivery
The scope of delivery of your appliance includes the fol-
lowing components.
►1 indoor unit
The following components are installed in the in-
door unit:
- Flow meter (heat sink side)
- Heat generator pump
(circulation pump)
- Safety valve
- User interface
- OTS heat pump controller
- Diaphragm expansion vessel 24 l
- 3-way switching module (DHW)
- Electric auxiliary heater
- Bypass pipe
►1x outdoor unit:
The following components are installed in the
outdoor unit:
- Evaporator
- Expansion valve
- Fan
- Compressor
►1 outdoor temperature sensor
►1 contact sensor:
For a mixed circuit
►2 cable temperature sensors
►2 solder adaptors
►1 Ochsner service book
4.2 Indoor unit hydraulics
The system must be engineered using an OCHSNER
standard hydraulic schematic or an OCHSNER special
hydraulic system.
1 Liquid line
2 Hot gas line
3 DHW return
4 Heating water return
5 DHW ow
6 Heating water ow
7 Safety valve
8 3-way switching module
9 Flow meter
10 Heat generator pump (circulation pump)
11 Electric auxiliary heater
12 Heat exchanger (heat sink side)
13 Diaphragm expansion vessel
14 System pressure sensor
15 Bypass pipe
16 Temperature sensor
17 Shut-o󰀨 valve
18 Fill and drain stopcock
4.3 Appliance components
4.3.1 Indoor unit
The indoor unit is intended to be installed inside the build-
ing only. The casing is acoustically optimised and allows
particularly quiet operation.
Electric auxiliary heater:
The appliance is tted with an electric auxiliary heater
(immersion heater). At low outdoor temperatures, the ap-
pliance operates in bivalent-parallel mode.

00_200_202_08_02_001-EN | www.ochsner.com 11
Appliance description
Condenser:
The condenser takes the form of a plate heat exchanger.
The plate heat exchanger is built of stainless steel and
insulated on all sides against condensation and heat loss.
4.3.2 Outdoor unit
The outdoor unit is intended to be installed outside. The
outdoor unit is designed as a split evaporator. The indoor
unit is connected to the outdoor unit with refrigerant lines,
along with electrical control and power supply cables.
Evaporator:
The evaporator is part of the outdoor unit and consists of
copper pipes in a set of aluminium ns.
Note
With an air/water heat pump, frost may form on
the evaporator ns of the outdoor unit, depending
on the air temperature (below approx. +7°C), air
humidity and the operating point. The evaporator
ns are automatically de-iced again in cyclical de-
frosting mode of the heat pump.
Fan:
The outdoor air is drawn through the evaporator by a quiet
fan.
Compressor:
The fully hermetically sealed compressor is designed for
high e󰀩ciency heat pump applications.
4.3.3 Heat pump control unit
The OTS heat pump controller includes software capable
of automatically controlling heat pump heating systems
with a cooling function as well as DHW heating.
All the settings required in the system can be made using
the user interface on the heat pump or via the app.
The OTS controller can control the following system circuits
and heat generators:
►1x direct circuit (heating and/or cooling)
►1x direct or mixed circuit (heating and/or cooling)
►1x directly heated DHW tank
►1x heat pump (heating and cooling)
►1x internal, electric auxiliary heater
4.4 Name plate
To identify your heat pump, name plates are attached to
the indoor and outdoor unit.
1 Name plate on indoor unit
1 Name plate on outdoor unit

12 www.ochsner.com | BA-982018-AIR FALCON-ba-EN
Running costs
5. Running costs
In the rst two heating seasons, higher running costs are
to be expected (up to 50% more, depending on residual
moisture in the building).
5.1 Flow temperatures
For optimum operation of your heat pump, you should aim
for the lowest possible heating ow temperatures (and also
DHW temperatures). The maximum system temperature
for your heat pump should be restricted to max. 55°C.
Note
Increasing the room temperature by 1°C results in
an increase in consumption of 5-7%.
5.2 Ventilation
Impact ventilation should be carried out according to user
requirements, especially during the heating season. Impact
ventilation is considerably more energy e󰀩cient than per-
manent ventilation, and therefore saves money.
»
Avoid permanent ventilation.
5.3 Heating setback program
Note
From an energy e󰀩ciency point of view, using a
time program to reduce the heating ow temper-
ature is not recommended for low temperature
heating systems (such as underoor heating), es-
pecially with air/water heat pumps. These systems
are slow to respond and, due to the additional sys-
tem output required after the end of the setback
phase, it is possible that the second heat generator
(boiler, electric immersion heater) will cut in. This
can lead to higher running costs.
6. Maintenance and care
Material damage
Maintenance work on electrical components of the
heat pump may only be carried out by qualied
contractors.
Note
In many places, national and regional regulations
stipulate an annual leakage test on the refrigerant
circuit.
»
Ensure that the refrigerant circuit of your heat
pump is tested for leaks once a year.
»
In doing so, observe all national and regional
rules and regulations (e.g. Regulation (EU)
No 517/2014, AS 2022 162 or SI 2021/543).
»
Ensure year-round access to the soldered
joints in the refrigerant circuit.
»
Ensure that the leakage tests carried out are
recorded in the service book provided.
WARNING
The following maintenance work may be carried
out only by OCHSNER Customer Service or by an
authorised OCHSNER Customer Service partner:
- Maintenance work not described in the section
on appliance maintenance
- Maintenance work on the refrigeration technol-
ogy
WARNING: Electrocution
For maintenance work, cut o󰀨 the power supply to
the indoor and outdoor units of your heat pump.
WARNING
Never use a potential ignition source when search-
ing for leaks in the refrigerant circuit.
Caution: Sound emissions
When the casing is open, the running compressor
may cause increased sound emissions.
»
Wear ear protection
6.1 General
We recommend arranging for OCHSNER Customer Ser-
vice to inspect and if necessary service the heat pump
once a year. We draw your attention to the fact that statu-
tory regulations require the system user to regularly check
their heating system.
The refrigerants used in OCHSNER heat pumps are
non-ammable, non-toxic and ozone neutral. Heat pumps
are classed as refrigeration equipment and are subject to
national and regional rules and regulations (e.g. Regulation
(EU) No 517/2014 and SI 2021/543).
OCHSNER Customer Service will be pleased to help in
carrying out maintenance and testing, in particular as re-
quired by these regulations. You can nd more information
at www.ochsner.com.
We recommend testing the heating water system pressure
and correcting it if necessary (pressure too high/low).

BA-982018-AIR FALCON-ba-EN | www.ochsner.com 13
Maintenance and care
We recommend adjusting the pre-charge pressure in the
diaphragm expansion vessel (DEV) on the system accord-
ingly (system height).
We recommend monitoring the ow rate of the heat sink
system (WNA) and if necessary the heat source system
(WQA) using the ow meters specied by OCHSNER.
When non-routine work takes place that requires relling
(e.g. system alteration or pipe breakage), we recommend
that an up to date water assessment be carried out and
the heat sink system be relled on this basis.
Material damage
Abrasive tools must not be used to clean the evap-
orator ns in the outdoor unit.
»
Any dirt on the evaporator ns should be
blown away using compressed air (max. 8 bar,
min. 30 cm distance), in the direction of nor-
mal air ow.
»
If the ns are very dirty, contact your OCHS-
NER system partner or OCHSNER Customer
Service.
»
If it is necessary to clean the casing sections of the
indoor or outdoor unit, use only a damp cloth (with
water or a weak soapy solution). Do not use any abra-
sive or aggressive cleaning materials.
»
Do not use a high pressure cleaner.
»
During the building phase, protect the indoor and out-
door units from dirt and dust with a suitable cover.
»
Ensure that the heating circuit is lled with su󰀩-
cient heating water that complies with the relevant
standards.
»
Ensure that any condensation beneath the outdoor
unit can drain away without freezing all year round.
»
Ensure that no ice is formed, especially on paths and
entrances around the outdoor unit.
»
Ensure that the outdoor unit (both the top and the
underside) is kept free from snow, leaves/twigs and
other foreign bodies.
Note
If the outdoor unit is covered with a thick layer of
snow, this can reduce system e󰀩ciency.
»
Remove snow on and around the outdoor unit
as necessary.
6.2 Testing the safety valve
Note
The indoor unit has an internal safety valve (DHW,
heating).
»
Observe the national and regional regulations
regarding the required regular operational
tests.
»
Remove the left-hand appliance casing panel to gain
access to the internal safety valve.
»
To test, turn the red knob on the safety valve until wa-
ter emerges from the safety valve drain.
»
Ensure that the safety valve is closed again after the
test.
1 Internal safety valve
6.3 Installation in coastal areas
Material damage
Water and salt residues on the outdoor unit can
signicantly accelerate the corrosion process.
»
Ensure that the condensate drains away cor-
rectly under the outdoor unit.
»
Ensure that rain water cannot collect under
the outdoor unit.
»
Regularly clean the outdoor unit to remove
salt residues.
»
Check the condition of the outdoor unit at
regular intervals and implement appropriate
anti-corrosion measures when needed. (every
three months)
»
During extended periods of downtime, ensure
that the outdoor unit is appropriately protect-
ed.
6.4 Maintenance contract
OCHSNER o󰀨ers a wide range of maintenance contracts.
Benets of a maintenance contract
►The legal requirements (e.g. Regulation
(EU) No 517/2014) are fullled through the annual
inspection.
►A correctly performed service not only helps to save
energy but also protects the environment.

14 www.ochsner.com | BA-982018-AIR FALCON-ba-EN
Problem solving
►In addition, correct care of the heating system is nec-
essary to ensure many years of operation and extend
its service life.
►For the system user, this reduces the risk of system
failure.
You can nd further information on customer service and
on the services o󰀨ered under the maintenance contracts
at www.ochsner.com.
7. Problem solving
7.1 Problem solving by appliance user
Problem Possible cause Solution
Too little DHW
is available or
the heating
system is too
cold.
The power supply
to the appliance
has been cut off
Check the safety device on
the main distributor board
for your house. Switch the
safety device back on. If the
safety device triggers again
after being switched back on,
contact a qualified contractor
or OCHSNER Customer
Service.
Water is leak-
ing from the
appliance.
The drain for the
safety valve is
blocked.
Clean the safety valve drain.
The heat pump
emits a rising
and falling
sound.
No fault
The noise is
caused by
changes in the
compressor
speed.
-
Fault message
on the user in-
terface display
and in the app
- Report faults on the system
to your system installer or
OCHSNER customer ser-
vice, depending on the area
of responsibility.
(See page 45, Fault mes-
sages)
If you have a problem that you cannot resolve, contact
the system installer, a qualied contractor or OCHSNER
Customer Service.
7. 2 Problem solving by qualied contractor
Note
Faults may only be rectied and changes made
to settings on the heat pump system by qualied
contractors. Standard settings for the controller are
set by OCHSNER Customer Service as part of the
commissioning process. The system user and their
contractual partner are responsible for any further
corrections and settings to programs.
Problem Possible cause Solution
Too little DHW
is available or
the heating sys-
tem is too cold.
The power supply
to the appliance
has been cut off.
Check the safety device on
the main distributor board for
your house.
Problem Possible cause Solution
Water is leaking
from the appli-
ance.
The drain for the
safety valve is
blocked.
Clean the safety valve drain.
The heating
system does
not heat up, no
fault message.
PSU shutdown Check individual room con-
trol, vent the heating circuit,
open valves, check heating
circuit pump, increase the
output stage of the heating
circuit pump, check fuses
Energy transfer to
the heating circuits
is interrupted or is
too low
Power failure
Hot water priority
The heat pump
is only produc-
ing DHW and
is not providing
heating, or is
doing so too
slowly.
DHW target tem-
perature is too high
Check the DHW target tem-
perature
Anti-legionella
mode
Use time program; install
electric immersion heater for
DHW
DHW circulation
pipework
Reduce flow rate and use
time program
DHW heat ex-
changer scaled up
Clean and descale the heat
exchanger
DHW tempera-
ture is not or is
no longer being
reached.
Heat exchanger for
DHW is too small.
Increase size of heat ex-
changer
Heat exchanger is
scaled up
Descale heat exchanger
Sensor incorrectly
positioned
Position sensor correctly
Pipework too small Install pipes with larger di-
ameters
DHW sensor faulty Replace DHW sensor
DHW charging
pump faulty
Replace DHW charging pump
DHW charging
pump output levels
set too low
Set higher output levels
3-way switching
module faulty
Replace 3-way switching
module
Heat pump runs
continuously
but yields only
low tempera-
tures, and there
are traces of
oil in the appli-
ance.
Refrigerant escap-
ing, refrigerant line
leaking
Switch off the heat pump
Ensure adequate ventilation
in the heat pump installation
room
Notify OCHSNER Customer
Service
Flow rate too
low
The minimum flow
rate at the heat
pump is not being
reached.
System pressure too low:
check pressure maintaining
device, buffer charging pump
faulty, 3-way switching mod-
ule faulty
The heat pump
emits a rising
and falling
sound.
No fault
The noise is
caused by
changes in the
compressor
speed.
-
Fault message
on the user in-
terface display
and in the app
- Use the fault list to help rec-
tify faults. (See page 45,
Fault messages)
7. 2 .1 Resetting the high limit safety cut-out
If the temperature sensor of the high limit safety cut-out
measures a heating water temperature of over 85°C, the
power supply to the internal electric auxiliary heater is in-
terrupted.
»
Check whether the high limit safety cut-out has been
triggered.
»
Check the ow rate of the heating water.

BA-982018-AIR FALCON-ba-EN | www.ochsner.com 15
Shutdown
»
Rectify the source of the fault.
»
Press the reset button on the rear of the appliance to
reset the high limit safety cut-out. The reset button
can be reached by hand from the left-hand side.
1 Reset button for high limit safety cut-out on rear of
appliance
8. Shutdown
You do not need to switch o󰀨 your heat pump system in
the summer.
Material damage
If the power supply to your heat pump system is
switched o󰀨, frost protection of the system cannot
be guaranteed.
»
You should not switch o󰀨 the power supply
to your heat pump, even outside the heating
period.
Should you nevertheless wish to deactivate your heat
pump system, switch it o󰀨 using the user interface or the
app. This way, safety functions such as frost protection
remain active.
Material damage
If the power supply to the heat pump system is
interrupted and there is a risk of frost, drain the
system on the water side.

16 www.ochsner.com | OTS_EN
Controller description
OPERATION
9. Controller description
The OTS heat pump controller includes software capable
of automatically controlling heat pump heating systems
with a cooling function as well as DHW heating.
All the settings required in the system can be made using
the user interface on the heat pump or via the app.
9.1 System components
The standard system always consists of the following com-
ponents:
►OTS controller
►User interface
9.2 LED display on user interface
LED Designa-
tion
Col-
our
Mode Description
Energy
supply
Green On Switched on
from Switched off
Operation Yellow On Switched on
from Switched off
Communi-
cation
Yellow Flashes at
consistent
intervals
Communication be-
tween controller and
user interface is in
progress
Off / flashes
6 times and
then pauses
Communication
between controller
and user interface is
impaired
9.3 Main screen
The main screen shows current temperatures and the sta-
tus of the heat pump. There is a separate main screen for
each heating circuit and each DHW circuit. Swipe side-
ways on the touchscreen to switch between the individual
circuits.
9.3.1 Main screen for heating circuits
1 Name Heating circuit 1
2 Current temperature of heating circuit
3 Status of heat pump
4 Operating program
5 Menu
6 Time program
7 Weather forecast/location
8 Current outdoor temperature (value measured by
controller)
9 Current DHW temperature
10 Seasonal operation
11 Current relative humidity (value measured by room
temperature and humidity sensor)

OTS_EN | www.ochsner.com 17
Controller description
9.3.2 Main screen for DHW circuits
1 Name DHW circuit
2 Current temperature of DHW circuit
3 Status of heat pump
4 Operating program
5 Menu
6 Time program
7 Weather forecast/location
8 Current outdoor temperature (value measured by
controller)
9.3.3 Name
An individual name can be assigned to each heating cir-
cuit and each DHW circuit. The name is displayed on the
circuit‘s main screen and in the menu.
»
Press and hold the name to change it.
1 Circuit identier
2 Name
9.3.4 Current temperature of heating circuit/DHW
circuit
Room temperature
sensor installed?
Displayed value
DHW circuit - Current DHW tem-
perature
Heating circuit No Current target room
temperature
Heating circuit Yes Current room tem-
perature
9.3.5 Current relative humidity
If there is a sensor installed for measuring the current rel-
ative humidity, the measured value is shown on the main
screen of the relevant heating circuit.
9.3.6 Status of heat pump
»
Press the Status symbol to view information about
faults and the status of your heat pump.
Colour Status
Green The heat pump is running optimally and
smoothly.
Yellow The heat pump has a fault. The OTS controller
attempts to solve the problem.
The auxiliary heater starts up to cover the
heating/DHW load while the fault remains.
Red The heat pump has a fault and can no longer
be operated. The OTS controller could not
solve the problem and has locked the system.
Please contact your service partner.
(For more information, see page 48, System
lockout)
Grey The heat pump has been switched off manu-
ally.
9.3.7 Menu
Press the Menu symbol to call up the main menu. The
heating system is shown in the main menu. Each heat
consumer (heating circuits, DHW circuits) and each heat
generator (heat pump, electric immersion heater, boiler,
etc.) has its own submenu.
9.3.8 Current DHW temperature
In addition to the current heating circuit temperature, the
current temperature of the DHW circuit is also displayed
in the heating circuit.

18 www.ochsner.com | OTS_EN
OTS app
10. OTS app
The OTS app is available for all devices with an Android
or iOS operating system.
10.1 Download the app and register
Material damage
The OTS app is available from OCHSNER in the
“Google Play Store” and “App Store”. Apps from
the “Google Play Store” and “App Store” undergo
regular security checks. Installing apps from other
sources, for example via direct download, can af-
fect the security of your device and put your heating
system data at risk.
»
Do not install any apps from untrusted sourc-
es.
»
Keep the OCHSNER app up to date.
»
Open the “Google Play Store” on a device with an An-
droid operating system.
»
Open the “App Store” on a device with an iOS operat-
ing system.
»
Search for Ochsner.
»
Install the app.
»
Open the app.
»
Select “Register”.
»
Select “Scan QR code”.
1 Scan QR code
»
Scan the QR code from the supplied service book.
Note
In order to be able to scan the QR code, the OTS
app requires access to the camera on your device.
»
Allow access to the camera.
Note
If there is no camera available or if scanning the
QR code isn‘t working you can also enter the code
manually.
»
Complete the registration form.
After successful registration, you will receive a conrma-
tion email.
»
Conrm registration.
»
Log in to the app using the login data generated dur-
ing registration.
10.2 App management
The “App management” screen shows the controllers of all
heat pumps that are activated in your app. Here you can
add new controllers and delete any you no longer use. You
can also start test mode.
10. 2.1 Opening app management
Note
When starting the app for the rst time, the “App
management” screen automatically opens.
»
Open the menu via the main screen of the app.
1 Menu
»
Expand the drop-down menu.
1 Drop-down menu
»
Select “App management”.
10.3 Test mode
The OTS app includes a test mode with which the app can
be tested before the system is commissioned.

OTS_EN | www.ochsner.com 19
Heating circuit
Note
Any settings made in test mode have no inuence
whatsoever on your heat pump. The text “This con-
guration is not licensed for end users” indicates
the test mode.
10.3.1 Setting up test mode
»
Open the “App management”.
»
Open the menu.
1 Menu
»
Select “Test app”.
»
Assign a user name.
11. Heating circuit
The “heating circuit” function controls the room tempera-
ture of a heating zone in heating mode and cooling mode.
The room temperature can be controlled with weather com-
pensation via a heating and cooling curve when heating
and cooling. In addition, the temperature can be controlled
with room temperature compensation if this is tted.
11.1 Setting the room temperature
The current “Target room temperature” can be adjusted
directly on the main screen of the respective heating circuit.
»
Open the main screen of the heating circuit for which
you want to change the temperature.
»
Press the plus or minus button to adjust the “Target
room temperature”.
1 Plus/minus button
You can set one or two target values via the main screen.
(See page 20, Operating program)
Note
A change in the target room temperature automat-
ically results in a shift of the heating curve and
cooling curve. (See page 23, Weather-compen-
sated controller)
Note
Due to the inertia of the heating system, the e󰀨ect
of changes to the room temperature settings is al-
ways delayed.
»
Perform only one adjustment per day.

20 www.ochsner.com | OTS_EN
Heating circuit
Note
If it is clear that the room temperature does not
correspond to your required temperature, espe-
cially at higher or lower outdoor temperatures, we
recommend adjusting the heating curve or cooling
curve accordingly. (See page 23, Weather-com-
pensated controller)
Note
A change in the target room temperature also
changes the energy consumption of the heat pump
system.
11.2 Operating program
You can switch between several operating programs for
each heating circuit.
Operating program Description
OFF The heating circuit is switched off.
Text on the main
screen
Text background
colour
OFF Red
Frost protection remains active. (See page
29, Frost protection)
COMFORT Text on the main
screen
Text background
colour
COMFORT Red
Control takes place with automatic
changeover between heating mode and
cooling mode. A time program can be set
which automatically switches between the
standard target value and the reduced
target value.
NORMAL MODE This operating program can only be
viewed and set via the menu. In this op-
erating program, none of the operating
program options are shown in red on the
main screen.
Control takes place with automatic
changeover between heating mode and
cooling mode. Control takes place without
a time program. The temperature is always
regulated to the standard target value.
REDUCED This operating program can only be
viewed and set via the menu. In this op-
erating program, none of the operating
program options are shown in red on the
main screen.
Control takes place with automatic
changeover between heating mode and
cooling mode. Control takes place without
a time program. The temperature is always
regulated to the reduced target value.
11. 2.1 Switching the heating circuit on/o󰀨
Via the main screen, you can choose between the following
options for each heating circuit:
►OFF
►COMFORT
1 Heating circuit switched o󰀨
2 Comfort mode
Switching o󰀨 the heating circuit may make sense to en-
sure that no heating or cooling takes place in spring and
autumn, when there may be large temperature uctuations
between day and night. In general however, heating/cool-
ing limits and building inertia should be adjusted correctly
and thus take over this function.
Note
If you want to switch o󰀨 a heating circuit, use the
operating program of the relevant heating circuit.
Do not disconnect the heat pump from the power
supply.
The Comfort program is the default operating program of
the heating circuit. In this mode, a time program can be
used. (See page 35, Time program)