Nibe MT-WH 2029-F User manual

Manual
NIBE
TM
MT-WH 2029-F and
NIBE
TM
MT-WH 2029-1FS
DOMESTIC HOT
WATER HEAT PUMP
OE01-935-1401
EN
OE01-935-1401 Manual article no. 714255999

2
NIBE
TM
MT-WH 2029-F
285 l, 1,5 kW heating element
NIBE article number: 084087
NIBE
TM
MT-WH 2029-1FS
285 l, 1,5 kW heating element
with extra 1” 0,8 m2heating coil
NIBE article number : 085001

3
Table of Contents
1 Transport 6
1.1 Delivery mode 6
1.2 Storage 6
1.3 Transport with forklift 6
1.4 Unloading the heat pump 6
1.5 Transport with trolley 6
1.6 Tilting of unit 6
2 Dimensions 7
3 About the product 8
3.1 General 8
3.2 Scope of delivery 8
3.3 Product description 8
3.4 Operation of the NIBE MT-WH 2029-F/1FS 8
3.5 Technical data 8
3.6 Performance data 9
3.7 Operating range / limits 9
3.8 Sound level 9
3.9 Domestic hot water tank 9
3.10 Airflow 9
3.11 Refrigerant circuit – description 10
3.11.1 Refrigerant circuit – diagram 10
3.12 Requirements for the water circuit 10
3.12.1 Water circuit - diagram 11
3.13 Electrical diagram Optima 170 Control 12
3.14 Fan Capacity 13
4 Before Installation and start up 14
4.1 Important safety instructions 14
4.1.1 Cooling system – safety instructions 14
4.1.2 Electrical circuit – safety instructions 14
4.1.3 Water circuit – safety instructions 14
4.1.4 Users 14

4
5 Installation 15
5.1 Location 15
5.2 Set-up sequence 15
5.3 Water connections 17
5.4 Location of connecting pipes 17
5.5 Connection of condensate drain 17
5.6 Air intake, air exhaust and connections 18
5.7 Connection of NIBE MT-WH 2029-1FS heating coil 18
6 Commissioning 19
6.1 Leak test 19
6.2Commissioning of the water circuit 19
6.3 Commissioning of the air circuit 19
6.4 Commissioning of the electrical circuit 19
7 Controls and Operations 20
7.1 Control panel Optima 170 20
7.2 Operation 20
7.3 Main Menu 20
7.3.1 Display view (main menu) 22
7.4 Service menu 22
7.4.1 Changing settings in the service menu 22
7.4.2 Service menu points 22
7.5 Table for set points 29
7.6 Table for defrosting 30
7.7 Functional description 31
7.7.1 Controlling Domestic hot water heat pump with Optima 170 31
7.7.2 Performance 31
7.7.3 The function of the heat pump 31
7.7.4 Water heating 31
7.7.5 Fan operation 31
7.7.6 Defrosting 32
7.7.7Extra heating capacity 32
Table of Contents

5
7.8 Safety features 32
7.8.1 High pressure switch 32
7.8.2 Safety breakers 32
7.9 Alarms 32
7.9.1 PE: High pressure switch alarm 32
7.9.2 Er6: Atypical evaporator temperatures 32
8 Maintenance 33
8.1 Environmental requirements 33
8.2 Cooling system and fan 33
8.3 Condensation and condensate drain 33
8.4 Water circulation and water tank 33
8.4.1 Pressure relief valve 33
8.4.2 Anode 34
9 Disassembly/decommissioning 35
10 Troubleshooting 36
10.1 The heat pump does not supply hot water 36
11 Warranty provisions 37
12 Declaration of conformity 38
13 Product and installer information 39

6
1 Transport
Immediately upon receipt, examine the domestic hot water heater pump to make sure that it is
intact and undamaged. If not, inform this to the shipping company immediately.All shipments
are the responsibility of the recipient unless otherwise agreed.
1.1 Delivery mode
NIBE MT-WH 2029-F/1FS is delivered without condensate drain tube and the safety equipment
for the water circuit.
1.2 Storage
NIBE MT-WH 2029-F/1FS must be stored and transported upright free of water and within its
packaging.
Transport and storage may take place at temperatures between -10 °C and +50 °C. If the unit
has been transported or stored at sub-zero temperatures leave the unit at room temperatures
for 24 hrs before commissioning.
1.3 Transport with forklift
For transport with a forklift, the NIBE MT-WH 2029-F/1FS must stand on the associated
transport frame. Always lift the unit slowly. Due to the high centre of gravity, the NIBE MT-WH
2029-F/1FS must be secured against tipping during transportation.
1.4 Unloading the heat pump
In order to avoid damages, the NIBE MT-WH 2029-F/1FS must be unloaded on a flat surface.
1.5 Transport with trolley
The NIBE MT-WH 2029-F/1FS must only be transported on the associated transport frame. This
also applies to transport on stairs. The transport frame measures approx. 70x76 cm incl. packag-
ing. The NIBE MT-WH 2029-F/1FS must be secured against sliding on the trolley.
Water connections etc. may not be used for transportation purposes.
Make sure that the trolley does not damage the cabinet or the various connections.
1.6 Tilting of unit
When carefully and manually transporting the NIBE MT-WH 2029-F/1FS over a short distance
to its final location the unit can be tilted up to 45°. If this limit is exceeded, the NIBE MT-WH
2029-F/1FS must be left in its normal upright position for at least 1 hour before it is started.
The unit must not be
transported horizontally by an
automotive vehicle (e.g., lorry, van
or trailer). There is a great risk that
the compressor fixation will be
damaged beyond repair. Observe
the tilt watch indicators.

7
2 Dimensions
1 Extract air Ø 160 mm
2 Exhaust air Ø 160 mm
3 Circuit board
4 Condensate drain Ø 19 mm
5 Compressor
6 Solenoid valve
7 Check valve
8 285 litre water tank
9 Service flange
10 1,5 kW 230V electric cartridge
11 Anode
12 Cold water connection 3/4”
BSPT (ISO 7-1)
13 Hot water circulation 3/4”
BSPT (ISO 7-1)
14 Hot water connection 3/4”
BSPT (ISO 7-1)
15 Heating coil in 3/4” BSPT (ISO 7-1)
(Only 1FS)
16 Heating coil out 3/4” BSPT (ISO 7-1)
(Only 1FS)
17 High pressure switch
Dimensional sketch NIBE MT-WH 2029-F/1FS
All dimensions in mm.
SECTION MM

8
3 About the product
3.1 General
The domestic hot water heat pump has been designed and produced according to all relevant
EU guidelines (please also refer to the EEC-declaration of conformity).
3.2 Scope of delivery
• Domestic hot water heat pump with built-in control.
• Manual including installation guidelines, operating instructions and technical data.
3.3 Product description
The NIBE MT-WH 2029-F/1FS is a domestic hot water heat pump, ready made for installation.
It consists of cabinet, components for refrigerant, air and water circuits as well as control panel,
and control and monitoring equipment designed for automatic operation.
The NIBE MT-WH 2029-F/1FS uses the heat from the extract air to produce hot water. At peak
times extra heat can be supplied through an integrated electrical immersion heater of 1.5 kW.
There is a sensor pocket in the water tank in which an external thermostat or sensor (diameter 6
mm) from an external control can be mounted.
The application area and operating principles of the heat pump are specified in this manual.
3.4 Operation of the NIBE MT-WH 2029-F/1FS
The control starts the compressor when hot water is needed. The compressor operates until the
water in the water tank reaches the set temperature. Usually, the NIBE MT-WH 2029-F/1FS can
produce enough hot water to cover the need of a household of 4 persons.
If the NIBE MT-WH 2029-F/1FS is not able to produce enough domestic hot water, an electrical
immersion heater integrated in the water tank can be activated.This way more domestic hot
water can be produced. It is possible to set the temperature to which the electrical immersion
heater should heat the water. The electrical immersion heater should only be used when there is
a need, as it consumes significantly more energy that the compressor.
3.5 Technical data
Domestic hot water heat pump NIBE MT-WH 2029-F/1FS
Diameter without pipe connections mm Ø660
Height mm 1837
Weight without water, F/1FS kg 120/126
Electrical connections V/Hz 230/50 (L1, N, G)
Fuse size A13 (10)
Refrigerant / quantity -/kg R134a /1.1
Ingress Protection rating -IP 21
Electrical immersion heater (supplementary heat) kW 1.5
Any work carried out on
this unit must only be done by
skilled personnel.
Take all necessary precautions to
avoid accidents.

9
Useful heat output kW 1.52
Electrical power input kW 0.43
COP acc. to EN-255-3 -3,54
Max./min. extract air temperature °C 35/-5
Max. water temperature (with the heat pump on) °C 55
Max. water temperature (with heat pump and immersion heater on) °C 65
Measuring point 1 meter in front of unit
Air volume 100%
63 HZ
125 Hz
250 HZ
500 HZ
1000 HZ
2000 HZ
4000 Hz
8000 Hz
L dB
58
53
54
47
44
46
35
30
Sum
(A-weighted)
L dB(A)
52
Material Specially enamelled steel
Anode Magnesium
Net volume Litres 285
Maximum pressure bar 10
Airflow (free blowing) m³/h 250
Recommended max. pressure loss in external pipe ducts Pa 100
Maximum fan speed rpm 2500
Maximum fan power consumption W58
Useful heat output kW 1.1
Electrical power input kW 0.4
COP acc. to EN-16147 class L -2.72
3.6 Performance data
Performance specified for heating of domestic water from 15°C (cold water) to 45°C (domestic
water) and extract air temperature 15°C:
Performance specified for heating of domestic water from 10°C (cold water) to 52.5°C (domes-
tic water) and extract air temperature 7°C:
3.7 Operating range / limits
3.8 Sound level
3.9 Domestic hot water tank
3.10 Airflow

10
Compressor HP-switch
Solonoid value
Hot water outlet
Water temp
sensor top (T7)
Water circulation
Add. coil outlet (only 1FS)
Add. coil outlet (only 1FS)
Cool water inlet
Water temp sensor botton (T8)
Thermostatic expansion valve
Air temp
sensor
(T5)
Evaporation temp sensor (T6)
Fan
Evapo-
rator
3.11 Refrigerant circuit – description
The cooling system is optimized for extracting the heat from the inlet air. Via the cooling system
the extracted heat is transferred to the water. The process is only possible with the addition of
additional external energy in the compressor. The cooling system is a closed system where the
HCFC-free refrigerant R134a is the energy carrier.
In the evaporator, heat is absorbed from the air and transferred to the refrigerant at low evapo-
ration temperature. Refrigerant in gaseous form is fed to the compressor, in which it is raised up
to a higher pressure and temperature level and transported to the condenser, coiled around the
water tank. In the condenser the refrigerant condense and the heat absorbed in the evaporator
plus some of the compressor energy is transferred to the domestic hot water.
Finally the high condensing pressure is throttled to the evaporating pressure using an expansion
valve and the refrigerant can again absorb heat from the extract air in the evaporator.
3.11.1 Refrigerant circuit – diagram
3.12 Requirements for the water circuit
The water circuit must be constructed in accordance with local norms and standards the ap-
plicable norms and requirements. Please see the specifications elsewhere in this manual.The
water used must be of drinking water quality. Material compatibility in the whole system must
be ensured.
The pipe sizes for on-site installation shall be defined based on the available water pressure as
well as the expected pressure loss in the pipe system. The water circuit shall be designed accord-
ing to the drinking water installation regulative in force.
Incorrect material combinations in the water circuit can lead to corrosion damage due to galva-
nic corrosion. This requires special attention when using galvanized components and compo-
nents that contain copper.
As for all pressurized vessels the heat pump water tank has to have an approved safety valve
(pressure setting depending on local rules and regulations) and a non return/check valve on the
cold water inlet. Cold water connection shall be at bottom ¾” pipe connection. Max. working
pressure is 10 bar and max. inlet temperature is 65°C.
3 About the product

11
8
8
8
7
71641
1
4
3
1
2
9
1 Shut off valve
2 Safety valve
3 Drain valve
4 Non return/check valve (approved according to heating and plumbing regulations)
6 Circulation pump
7 Swivel nut tap connector
8 Pipe connections 3/4” BSPT (ISO 7-1)
9 Safety valve outlet
Hot Water
Circulation
Cold water inled
Dirt must be avoided in the pipe system (if necessary flush the pipes before the heat pump is
connected)!
When no circulation pipe is connected to the heat pump, the circulation connection must be
sealed accordingly!
3.12.1 Water circuit - diagram

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EP
M1
KP
NT
Aux relæ
Aux Relay
Aux Relais
El-patron 1,5Kw
Electric heating element 1,5Kw
Heizstab 1,5Kw
Højtrykspressostat
High pressure switch
Hochdruckpressostat
Magnetventil afrimning
Magnetventile Abtau
Magnetic valve Defrost
Nettilslutning 1x230V 50Hz
sikring max. 13 Amp
end main: 1x230V 50Hz
fuse mx. 13 Amp
Netzende: 1x230V 50Hz
sicherung max 13 Amp
Skal jordforbindes jvt. stærkstrømsreglementet
Must have earth connection
Muss erdung haben
Tilslutning Datalog
Connection Datalog
Anschluss Datalog
Tilslutning Datalog
Connection Datalog
Anschluss Datalog
MA4-
NT-
EP-
P-
T5-
T6-
T7-
T8-
T9-
T10-
80°C
Føler før køleflade
Sensor before the coil
Fühler bevor die kühlfläche
Føler Køleflade
Sensor on the coil
Kühlfläche fühler
Føler tank top
Sensor in the top of the tank
Oberer speicher fühler
Føler tank bund
Sensor in the bottom of the tank
Unterer Speicherfühler
Ekstra funktion
Ekstra Funktion
Extra Funktion
Føler start/stop eller Hygrostat
Sensor start/stop or Hygrostat
Fühler start/stop oder Hygrostat
12 12
H1
12 12
H2
1 21 2
H5
1 21 2
H7
1 21 2
H8
1234 1234
L1
12341234
L4
12341234
L5
123 123
H3
1 2 31 2 3
H6
12345 12345
L3
12341234
L6
11 22 3 4L1N PEPE 11 22 3 4L1N PEPE
T5
T6
T7
T8
VL1
MA4
C1 2µF
BU
BNBK
PE BU
BNBK
PE
M1
CPE
R
S
CPE
R
S
T9
T10
PE
1 2 1 2
1 2
1 2
1
1
1
1
1
1 1
1
1
1
1
1
11
2 2
2
2
2
2
2
2
2
2
2
2
2 2
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
5
EPEPPE PEPE PEPE PE
Q1=1,6A Q2=5A
H1
H2
H3
H4
H5
H6
H7
H8
L1
L2
L4
L5
L3 L6
F
F
F
F
F
F
F
N
N
N
N
N
N
1
1
1
1
1
1 1
1
1
1
1
1
11
2 2
2
2
2
2
2
2
2
2
2
2
2 2
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
5
EPEPPE PEPE PEPE PE
H8- externe Umwälzpumpe
z.B. Solarumwälzpumpe
3.13 Electrical diagram Optima 170 Control
3 About the product

13
3.14 Fan capacity
It is recommended to keep the external pressure loss below 100 Pa.
Fan capacity
Air volume m3/h

14
4 Before Installation and start up
4.1 Important safety instructions
In the design and implementation of the NIBE MT-WH 2029-F/1FS, all relevant EU guidelines
have been adhered to.
4.1.1 Cooling system – safety instructions
Before beginning repair and service the skilled service technician must ensure that the refrige-
rant is discharged to a level at which the execution of the work can be done safely and secure.
When opening the heat pump cooling circuit for service and repair special attention much be
paid especially when working with an open flame (soldering, welding etc.) to prevent the out-
break of fire.
4.1.2 Electrical circuit – safety instructions
When connecting the NIBE MT-WH 2029-F/1FS to the power supply, the national rules and
norms must be adhered to. Possible additional requirements posed by the local energy supplier
must also be followed. The heat pump unit is connected to the power supply by L1, N, G and
with a min. 3 mm isolation distance in the breaker.
4.1.3 Water circuit – safety instructions
Only water of drinking water quality must be used. During installation, attention must be paid
to the choice of materials and it must be ensured that chosen materials work together without
problems in the entire circuit.
Special attention must be paid when using galvanised components and components containing
aluminium!
Safety equipment must be installed to prevent over pressure in the system. Always use a max.
10 bar safety valve and a stop valve (approved according to heating and plumbing regulations).
All pipe work has to be installed according to plumbing and heating regulations.
4.1.4 Users
The NIBE MT-WH 2029-F/1FS is not intended for use by persons (including children) with re-
duced physical, sensory or mental capabilities or lack of experience and knowledge unless they
have been given supervision or instruction concerning use of the appliance in a safe way and
understand the hazards involved.
Children should be supervised to ensure that they do not play with the appliance. Cleaning and
user maintenance shall not be made by children without supervision.
When working on the
NIBE MT-WH 2029-F/1FS, the main
power supply must always be
disconnected– pull out the plug!

15
The The domestic hot water heat pump must only be installed by trained personel and in accord-
ance with the local building codes.
5.1 Location
The NIBE MT-WH 2029-F/1FS must only be installed in a frost-free room. The installation loca-
tion should comply with the following criteria:
• Room temperature between 5°C and +35°C.
• Drain possibility for condensate and floor drain.
• No abnormal dust concentration in the air.
• Solid base (approx. 500 kg / m²)
• It is necessary to ensure that ther is sufficient space around the unit for maintenance and
service. A clearance of 0,5 m around the unit is recommended.
5.2 Set-up sequence
1. Remove the packaging from the pallet.
2. Remove the transport fittings from the pallet.
3. Remove the NIBE MT-WH 2029-F/1FS off the pallet and place it on the floor.
4. Adjust the NIBE MT-WH 2029-F/1FS vertically by adjusting the feet.
5 Installation
No holes are to be drilled
in the NIBE MT-WH 2029-F/1FS.
It may damage the condenser
coiled around the water tank.
1. Screws to be removed (hexagonal
head).
2. Screws to be removed.
3. Removal of screws.

16
6.The product is now placed on the floor with the 2 pcs. of wood underneath. 9. The pallet is removed.
5. Continual removal:
c: Remove the lower part of the pallet while keeping the unit tilted, still
with the 2 pcs. of wood beneath.
4. Removal of unit of from the pallet:
a: Pull the unit carefully to one side.
b: Tilt the unit to the same side together with the 2 pcs. of wood beneath.
7. Removal of 1st piece of wood (can be released if product is tilted to
one side).
8. Removal of 2nd piece of wood (can be released if product is tilted to
the other side).
5 Installation

17
Heating coil inlet (Only 1FS)
Heating coil outlet (Only 1FS)
Hot water outlet and
condensate drain
Water trap. Min. 60 mm
of standing water
Condensate drain, Ø 19 mm
connection
Hot water return
5.3 Water connections
The following connections are located on the back of the heat pump:
• 3/4” cold water inlet
• 3/4” hot water circulation
• 3/4” hot water outlet
• Condensate drain Ø 19 mm outside
The maximum working pressure is 10 bar and the maximum working temperature is 65°C.
Dirt in the pipe work must be avoided. After installation of the external pipes flush if required
before connection of the domestic hot water heat pump.
If no circulation of water is needed, make sure that the circulation connection is properly sealed!
It is recommended to use a ¾” flex pipe for the water connections to avoid possible vibration
noise.
When installing the pipes please ensure that the pipe connections are not excessively stressed.
Use a pipe wrench to relax torque forces on the pipe connections!
5.4 Location of connecting pipes
Hot water outlet is mounted on the upper connecting branch (¾” BSPT/ISO 7-1).
If the unit is used with the circulation of the hot water supply, the middle connecting branch is
used for hot water return (¾” BSPT/ISO 7-1).
Inlet of fresh cold water is mounted on the bottom connecting branch (¾” BSPT/ISO 7-1).
5.5 Connection of condensate drain
While the NIBE MT-WH 2029-F/1FS is running, condensate will form, which is to be discharged
to the sewage drain via the condensate drain pipe, Ø 19 mm connection outside.The quantity
of condensate depends upon the humidity of the air fed to the NIBE MT-WH 2029-F/1FS.
The condensate connecting branch must be equipped with an air tight water trap and run to a
drain.The water trap must contain a standing water column of at least 60 mm.
Neglecting to install a
drain trap can lead to water dam-
age or damage to NIBE MT-WH
2029-F/1FS. If the drain trap is
not installed correctly the product
warranty is not valid.
The NIBE MT-WH 2029-F/1FS
must only be started with a filled
water tank!

18
5.6 Air intake, air exhaust and connections
Make sure that there is sufficient space around the NIBE MT-WH 2029-F/1FS.
The inlet air must not be polluted with aggressive components (ammonia, sulphur, chlorine etc.)
as components parts of the heat pump unit may be damaged. The air also needs to be free of
dust and other particles.
Inlet and outlet ducts must be made of rigid smooth pipes to minimize pressure losses. Please
take into account the fan working pressure and the ducts pressure losses during dimensioning
of the duct system (see technical data).
The two connections to the heat pump are Ø 160 m.
It is advised to install the air ducts near the heat pump, levelled or with a slight slope away from
the air in- and outlet to avoid ingress of condensed water from the duct system to the heat
pump.
When air ducts are connected to the outside of a building, a low resistance non return flap
should be installed to ensure that no cold air is entering the room during winter times when the
heat pump is not operating.
All air ducts have to be insulated after they have been installed to reduce heat loss and noise
level. Insulation has to be applied to protect against external condensation on the cold exhaust
duct.
It is recommended to mount a flexible connection between the air duct and duct connection to
ease future service of the unit.
It is also recommended to install silencer units in between the heat pump unit and the ventila-
tion system to avoid potential travel of noise from the unit to the ventilation system.
5.7 Connection of NIBE MT-WH 2029-1FS heating coil
In the NIBE MT-WH 2029-1FS there is an extra heat exchanger installed (1” coil, 0.8 m²,
enamelled on the outside). The pipe connections ¾” BSPT/ISO 7-1. In the sensor pocket for the
thermostat sensor there can also be placed a sensor to control the external connection e.g. oil
burner, wood burner etc. Max. diameter of the sensor is 6 mm.
Dirt in the pipe work must be avoided. After installation of the external pipes. Flush if required
before connection of the domestic hot water heat pump.
When installing the pipes please ensure that the pipe connections are not excessively stressed.
Use a pipe wrench to relax torque forces on the pipe connections!
Do not drill any holes for
fittings etc. in the unit. This could
potential damage the product
causing it to be having to be
scrapped.
The NIBE MT-WH 2029-F/1FS
must always be disconnected from
the power before the top cover of
the unit is removed!
When the unit is disconnected from
the power, please wait until the fan
has stopped before dismantling the
top cover!
5 Installation

19
6 Commissioning
6.1 Leak test
After installation it is necessary to check that the entire water installation is tight.This is accom-
plished by performing a water leak test.Also check that the drain water trap on the condense
water hose/pipe has a min. height of 60 mm and that the drainage is unobstructed.
6.2 Commissioning of the water circuit
Fill the water tank via the cold water connecting branch. Deaerate the water tank by opening
one of the hot water taps located at the highest level until air no longer appears at the tapping
point.
6.3 Commissioning of the air circuit
Ensure that the air in- and outlet paths are open and ready for use.
6.4 Commissioning of the electrical circuit
Power up the unit. A counter displays the numbers 1 to 9 followed by display of the controller
model (170) for 3 sec. and the software version for 3 sec. Then the top of water tank tempera-
ture is displayed and the unit engages operation.
The NIBE MT-WH 2029-F/1FS is now ready for use.

20
7 Controls and Operations
7.1 Control panel Optima 170
The NIBE MT-WH 2029-F/1FS domestic hot water heat pump is delivered with an Optima 170
control with factory settings so that the heat pump is ready for operation without additional
adjustments.
The factory settings are default settings that should be adjusted in accordance to the opera-
tional needs and user requirements in order to achieve optimal performance and utilisation of
the system.
7.2 Operation
The value of the relevant menu item is displayed when the key/key combination below is
pressed.
The value can be changed using the arrow keys when the key/key combination is held down
simultaneously.
7.3 Main Menu
P1: Mode
The “Mode” key is pressed and held.Then the setting can be changed using the arrow keys.
With this key it is possible to switch between the functions: Standby, automatic operation, con-
stant operation and timer controlled constant operation (Mode 0, 1, 2, 3).
Mode 0: The heat pump is now turned off and only the controller is active. The heat pump
does not start when heating is required.
Mode 1: The fan only runs when the domestic water is being heated. At menu point E25 the
desired fan speed is set between 0-100 %.
Mode 2: The fan runs even when the compressor is stopped.
This function is called: Constant extraction from the residence.
At menu point E25 the desired fan speed is set between 0-100 %.
Mode 3: The fan runs for a set period of time, even when the compressor is stopped, before it
returns back to normal operation
At menu point E26 the desired fan speed is set between 0-100 %.
At menu point E17 select whether “Mode 3” is to run until the next manual change (E17 = 0)
or if “Mode 3” is to be active for a specific period of time (E17=1 and E18: 0-10 hours) thereaf-
ter returning to “Mode 1”.
Options: 0-3
Factory setting: 1