Mitsubishi Heavy Industries HMA100V User manual

USER’S MANUAL
MITSUBISHI HEAVY INDUSTRIES LTD.
Air to Water Heat Pump
Hydrolution (HM)
HMA100V, HMA100VM / FDCW71VNX-A FDCW100VNX-A
HMS140VA, HMS140V / FDCW140VNX-A
This heat pump complies with EMC Directive 2004/108/EC,
LV Directive 2006/95/EC, and
parts of Machinery Directive 2006/42/EC (HMS140VA, HMS140V
and its relevant outdoor unit and tanks only).
CE marking is applicable to the area of 50 Hz power supply. PSA012B733C
English：Original instruction

1
Safety percautions
2
General
6
Installation data 6
Information about the installation
Product information 7
Features of Hydrolution 7
Principle of operation Hydrolution 7
Front panel, indoor unit
8
How to use the front panel 9
Menu types 9
Quick movement 9
Key lock 9
Language setting 9
Comfort setting heating
General 10
Operating status 10
Changing the room temperature manually 10
Default Heating curve setting 11
Readjusting the default settings 12
Heating system 2 12
Vacation set back 12
Silent mode 12
Comfort setting with room sensor 12
Comfort setting cooling
General 13
Cooling operated from the outdoor sensor in operating
mode AutoC 13
Comfort setting hot water
Available volume 14
Prioritizing 14
Extra Hot Water 15
Maintenance
Checking the safety valves in indoor unit 15
Pressure gauge in indoor unit 16
Emptying the hot water heater 16
Emptying the vessel 16
Maintenance of outdoor unit 16
Saving tips 16
Dealing with comfort disruption
17
Operating mode “Add. heat only” 18
Emergency mode 18
Alarm indications
What happens in the event of an alarm? 19
Recommended actions 19
Resetting alarms 19
Control
Display 20
Menu types 20
Menu management 20
Menu tree 21
Main menus 24
1.0 [N] Hot water temp. 25
2.0 [N] Supply temp. 26
3.0 [N] Supply temp. 2 28
4.0 [N] Outdoor temp. 29
5.0 [N] Heat pump 29
6.0 [N] Room temperature 30
7.0 [N] Clock 31
8.0 [N] Other adjustments 32
Checklist: Checks before commissioning 34
Table of Contents

2
Safety precautions
SAFETY PRECAUTIONS
Please read these “SAFETY PRECAUTIONS”
before starting to use this product and use
the product appropriately according to the
instructions.
The precautions provided here are classified
into “ DANGER” and “ CAUTION”.
The “ DANGER” sections describe
potentially hazardous situations that may
lead to serious outcomes such as death
and sericus injuries if the product is
mishandled. Note, however, that depending
on the situation, the items listed in the “
CAUTION” sections do also have the
potential of causing serious outcomes.
Both warnings and cautions provide you
important information related to safety ;
please make sure to observe them.
The symbols used throughout the main
text of this manual have the following
meaning.
marks mean danger, alarm, and
caution. The specified prohibited item
is described in the triangle. The left
mark means “Shock hazard alarm”.
marks mean prohibited items. The
specified prohibited item is described
in the circle or in the vicinage.
● marks mean compulsory action or
instruction. The specified prohibited
item is described in the circle. The
left mark means “Earth is needed”.
After you have read the manual, always
store it where other users can refer to at
any time. If a new owner takes over the
system, make sure to pass this manual.
This heat pump complies with EMC
Directive 2004/108/EC.
This appliance is designed for use in a
home environment and can be used by
children aged from 8 years and above and
persons with reduced physical, sensory or
mental capabilities or lack of experience
and knowledge if they have been given
supervision or instruction concerning
use of the appliance in a safe way and
understand the hazards involved. Children
shall not play with the appliance. Cleaning
and user maintenance shall not be made
by children without supervision.
This in accordance to applicable parts of
the low voltage directive 2006/95/EC, LVD.
HMS140VA, HMS140V and its relevant
outdoor unit and tanks are also intended
for use by experts or trained users in




shops, hotels, light industry, on farms and
in similar environments. This in accordance
to applicable parts of the machinery
directive 2006/42/EC.
CE marking is applicable to the area of
50 Hz power supply.
The emission sound pressure level from
each Indoor and Outdoor unit is under
70 dB(A).
Make sure to have the installation
done by your dealer or a specialist.
If you install by yourself and the unit is not
properly installed, water leakage, electric
shock, fire and injuries caused by the drop
of the unit may occur.
The preventive measures that the
density of leaked refrigerant does not
exceed the limit is necessary in case of
installing the unit in a small room.
The leakage of refrigerant may cause oxygen
deficiency accident. Consult your dealer for the
measures.
DANGER
INSTALLATION PRECAUTIONS
Make sure to perform grounding
work.
Do not connect grounding wire to any
gas pipe, water pipe, conductor rods or
telephones. Incomplete grounding may
cause electric shock through leakage of
electricity.
Make sure to mount a leakage breaker.
Otherwise electric shock may occur.
Please consult your dealer or a specialist for the
mounting.
Do not mount where flammable gas
leakage can happen.
If leaked gas stagnates in the unit, the gas
may cause fire.
Make sure to layout the drain pipe so
that the water is completely drained.
Otherwise, water may leak and wet
household goods.
CAUTION

3
Safety precautions
Do not expose yourself directly to
radiator or any other heating device
for a long time.
It may cause low temperture burn injury.
Do not set water temperature too
high when under-floor heating
application is used.
It may cause low temperature burn injury.
Do not expose yourself directly to
cooled air flow for a long time or
cool too much.
It may be cause of deconditioning or health
disorder.
Do not insert fingers or sticks into
the air inlet or outlet grilles.
It may cause injuries because of the fan
rotating at high speed.
If the unit has been submerged under
water due to a natural disaster such as
flood or typhoon, consult your dealer before
using it again.
If you use it as it stands, it may lead to
failure, electric shock or fire.
If any abnormal symptom (scorched
flavor etc.) is found, cut off the power
and stop the operation.
Then consult your dealer.
If you use it as it stands, it may lead to
failure, electric shock or fire.
One of the causes of poor cooling
or poor heating may be refrigerant
leakage. Please consult your dealer.
If the repair requires additional refrigerant,
determine the service with the service staff.
The refrigerant of air conditioner is not toxic.
Normally the refrigerant does not leak. But if
it leaks and contacts fire such as fan heater,
space heater or cooking heater, it may
produce toxic chemicals.
Do not insert fingers or sticks even if
air blower does not operate.
It may suddenly operate and cause injuries.
DANGER
OPERATION PRECAUTIONS
Do not use for particular purpose such
as the storage of food, animals and
plants, precision apparatus and arts etc.
Storage goods may degrade.
Do not operate the button with wet
hand.
It may cause electric shock.
When a burning appliance is used
together with the unit, ventilate frequently.
If ventilation is not sufficient, it may cause
oxygen deficiency accident.
Do not place a burning appliance where
the airflow from the unit is directly
blown in case fan coil is used.
It may cause the imperfect combustion of the
equipment.
Make sure that the unit installation
foundation is not damaged due to long-
term use.
If it is left to stand, the unit may fall down causing
injury.
Do not lean on the unit.
It may overturn or fall if it is placed on
unstable surface and if may cause injury.
Do not wash the unit with water, nor
place a vase with water on the unit.
It may cause electric shock or ignition.
Do not install the unit where the airflow
is directly blown to animals and plants.
They may suffer from adverse effect.
Before cleaning, make sure to stop
operation and cut off the power.
The fan inside rotates at high speeds.
Make sure to use proper size of fuse.
Using steel wire or copper wire may
lead to failure or fire.
Do not store a flammable spray etc. near
the unit, nor blow directly to the unit.
It may lead to fire.
Before maintenance, make sure to
stop operation and cut off the power.
The fan inside rotates at high speeds.
CAUTION

4
When the unit isn’t used for a long-
term, cut off the power.
The accumulation of dirt may lead to heat
generation or fire. But, before resuming
the operation, turn on the unit for six hours
beforehand to save harmless.
Do not place any other electric appliances
or household goods below or around the
air conditioner.
Dripping from the unit may lead to failure or
contamination.
Do not touch the aluminum fin.
Otherwise it may lead to injuries.
Do not clean the inside of the indoor
unit by yourself. Make sure to consult
your dealer or user inquiry counter
specified by our company.
If you select incorrect detergent or improper
method, resin parts may be damaged and
lead to water leakage. If the detergent is
dropped on the electric component or motor,
it may lead to failure, smoking or ignition.
Do not place objects on the outdoor unit,
nor mount on it.
It may lead to injuries resulting from
dropping or falling.
During the operation or maintenance,
do not use an unstable footrest.
It may lead to injuries resulting from falling.
During thunderstorm, stop the
operation and turn off the switch.
A lightning strike may lead to failure.
After several seasons of operating,
inspections and maintenances are
required except routine care and cleaning.
Accumulated dirt or dust inside the indoor
unit may cause odor, water leakage through
the clogging of water discharging pipe for
dehumidification. Specialized information
and skills are required for inspections and
maintenances. Therefore contact your
dealer.
Safety precautions
Do not place any object around the
outdoor unit, nor allow fallen leaves to
pile up.
Fallen leaves may induce insects and worms
in them, and they may lead to failure, ignition
or smoking by touching electric components.
Do not use with inlet/outlet grilles or
other panel removed.
Otherwise, it may lead to injuries.
Do not operate or stop the unit by
using the power supply switch.
It may lead to fire or water leakage.
If auto restart is set effectively, the fan
may rotate suddenly causing injuries.
Do not strain the remote control
cord.
A part of core wire may be cut off causing
electric leakage.
Do not use water heater etc. near the
indoor unit or remote control.
If a Vapor-generating appliance is used near
them, it may lead to water drop causing
electric leakage or short circuit.
Do not use the unit where powder or
fiber is floating.
Fine powder or fiber passing through the air
filter may stagnate inside the unit and lead
to electric leak or short circuit.
Do not place objects under the unit
which must avoid being exposed to
water.
Over 80 percent humidity or the clogging of
drain pipe may damage them through dew
dropping.

5
Safety precautions
Never perform any modification.
Contact your dealer for repairing.
Improper repairing may lead to water
leakage, electric shock or fire. Normally
the refrigerant does not leak. But if it leaks
and contacts fire such as fan heater, space
heater or cooking heater, it may produce
toxic chemicals. When repairing refrigerant
leakage, determine the service with the
service staff that the repair has been finished
without fault.
If it is required to relocation and reinstall
the unit, consult your dealer or a specialist.
Improper installation of air conditioning unit
may cause water leakage, electric shock
and/or fire.
Before repairing or checking indoor
unit, be sure to turn off “Indoor unit
power supply breaker”.
It can result in electric shock or injury due
to rotation of indoor unit fan if you perform
check or repair with the “Indoor unit power
supply breaker” turned on.
Place the panels removed for
repairing or checking on the stable
spot.
Otherwise, dropping or falling may lead to
injury.
CAUTION
PRECAUTIONS FOR RELOCATION OR REPAIRING

6
General
Hydrolution is a system for heating, cooling and producing hot water for small houses. The system consists of an outdoor nuit, which
utilises the energy in the outdoor air and sends it to the indoor unit, which takes care of the regulation and heat distribution in the house.
In order to get the greatest benet from the system Hydrolution you should read through the User's Manual.
Hydrolution is a quality system offering a long service life and reliable operation.
NOTE
Do not vent R410A into the atmosphere: R410A is a f luorinated greenhouse gas, covered by the K yoto Protocol with a Global
Warming Potential(GWP)= 1975.
Installation data
Completed by the installation engineer when the installation is installed
Installation data and installation check list on page 34 must
be lled in by the installer in order for the warranty to apply.
The Serial number, must always be stated in all correspondence with MHI.
Indoor unit: _ _ _ _ _ _ _ _ _ _ _ _ _ _ Outdoor unit: _ _ _ _ _ _ _ _ _ _ _
Installation date
Check list, page 34, filled in
Installation engineers
Heating
Radiator Floor Fan convector
Cooling
Other Floor Fan convector Not available
External heat source
Solar Gas Oil Wood Pellets Electricity
Accessories
Tank heater MH-RG 10 ESV22/28 VCC22/28 ACK22/28
Settings
Fill in the difference from default settings.
Menu Number Menu Type Description Setting
Date________Signed______________________________
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
General

7
Information about the installation
Product information
Hydrolution is a complete modern heat pump system that
offers effective technical energy saving and reduced carbon
dioxide emissions. Heat production is safe and economical
with integrated hot water heater, immersion heater, circulation
pump and climate system in the indoor unit.
The heat is retrieved from the outdoor air through outdoor unit,
where the refrigerant circulated in a closed piping system transfers
the heat from the heat source (outdoor air) to indoor unit.
This eliminates the need for holes and coils in the ground.
Features of Hydrolution
■ Optimal annual heating factor thanks to the inverter
controlled compressor.
■ Outdoor unit with compact dimensions.
■ Speed controlled system pump that supplies the heat pump
with suitable system ow.
■ Optimized operating costs. The speed of the compressor is
adjusted according to the demand.
■ Integrated coil water heater in indoor unit.
■ Integrated clock for scheduling extra hot water and
temperature lowering/increasing the supply water temperature.
■ Prepared for control of two heating systems.
■ Integrated active cooling function.
■ Possible to connect external heat sources.
Principle of operation Hydrolution
12
4
3
Function
Hydrolution is a system that can produce heating, hot water
and cooling.
The principle during heating can be simplied as follows:
1. The refrigerant in outdoor unit takes the heat from the
outdoor air and is compressed to higher temperature by the
compressor.
2. The hot refrigerant (now in gas state) is routed into indoor unit.
3. The refrigerant releases the heat for further distribution in
the system.
4. The refrigerant (now in liquid state) is routed back to
outdoor unit and the process is repeated.
By reversing the entire process, and thereby the refrigerant in
outdoor unit takes the heat from the water and release the heat
to the outdoor air, the heat pump can cool instead if necessary.
Indoor unit determines when outdoor unit is to work and not to
work, using the collated data from the temperature sensor. In
the event of extra heat demands, indoor unit can connect additional
heat source in the form of the internal immersion heater, or any
connected external heat source.
Information about the installation

8
Front panel, indoor unit
Hot water symbol
“A”
“B”
Circulation pump symbol
Heating system symbol
Plus button
-
1.0
13.43
A BI II III I II
1.0
A
5 0 . 0 ° C
If the electrical addition is connected
Addition. heat symbol
“I” Electrical step 1
“II” Electrical step 2
“I II” Electrical step 1+2
“III” Electrical step 3
- Compressor is operational
Compressor symbol
“A” Heating mode
“B” Cooling mode
Button pressing (the change does not
need to be confirmed with the enter
button). - Current operating mode
shown in display - Further button press
changes operating mode. Press the
enter button to return to the normal
display mode.
Operating status
For information about the various operating
modes, see the different sections regarding
comfort settings.
Extra hot water operation starts with this
button. The operation is cancelled when
the button is pressed again.
The change does not need to be
confirmed with the Enter button.
Extra hot water (XHW)
Pressing the button takes you directly to
menu 1.0.
Menu 1.0
- Turning clockwise (+) offsets the Heating
Offset heating curve
Normal mode
Switch
1
All control functions connected.
Shutdown
0
Only the circulation pump and
electric heater (electrical step 2)
are operational.
Emergency mode
curve. When the knob is turned
menu 2.0 is shown on the display and
the value for the calculated supply
temperature changes.
For details, see Default Heating curve setting.
Hot water charging in progress.
Temporary Extra hot water operation in
progress.
Time based Extra hot water operation in
progress, e.g. periodic.
Circulation pump in operation.
With two circulation pumps (requires ESV
22 accessory), the operating pump is also
indicated.
Heating in progress.
Menu number
Key lock activated.
Description of current display
parameter
Information symbols
Plus button
Scroll forward in the menu system.
- Increase the value of the selected parameter
See the section “Control – General”
Minus button
- Scroll back in the menu system.
- Reduce the value of the selected parameter
See the section “Control – General”
Enter button
- Entering lower layer in the menu system.
- Parameter change activated
See the section “Control – General”
Status lamp
During normal operation, the status lamp
lights green. In the event of an alarm, it
lights red.
- Parameter change confirmed
Front panel, indoor unit

9
How to use the front panel
All the most common settings are made from the panel such as
comfort etc. that you expect from the heat pump system to
full.
In order to make full use of it, certain basic settings must have
been made (see page 11) and the installation in general is carried
out according to the instructions.
Menu 1.0 (the temperature in the water heater) is
normally shown on the display.
The plus and minus buttons and the enter button are
used to scroll through the menu system as well as to
change the set value in some menus.
Menu types (Menu 8.1.1)
Control is classified into different menu types depending on
how “deep” into the controls you need to go.
■ Normal [N]: The settings you as a customer
often need.
■ Extended [U]: Shows all detailed menus except
the service menus.
Quick movement
To quickly return to the main menu from a sub menu, press
the following button:
Key lock
A key lock can be activated in the main menus by simultaneously
pressing the and the buttons. The key symbol will
then be shown on the display.
The same procedure is used to deactivate the key lock.
Language setting (Menu 8.1.2)
Language used in the display can be chosen in menu 8.1.2.
Front panel, indoor unit

10
Comfort setting heating
General
The indoor temperature depends on several factors.
■ Sunlight and heat emissions from people and household
machines are normally sufcient to keep the house warm
during the warmer parts of the year.
■ When it gets colder outside, the heating system must be
started. The colder it is outside, the warmer radiators and
under oor heating systems must be.
Controlling heat production
Normally, the heat pump heats the water (heating medium) to
the temperature required at a certain outdoor temperature. This
occurs automatically on the basis of the collected temperature
values from the outdoor sensor and sensors on the lines to the
radiators (supply water sensors). Extra accessories such as room
sensors, can inuence the temperature.
In order to operate the system properly, the correct settings
must be made on the heat pump rst, see the section “Default
Heating curve setting”.
The outdoor sensor (mounted on an exterior wall of the house)
senses variations in the outdoor temperature early on, sends the
information to the heat pump control computer and heating
operation is started. It does not have to be cold inside the house
before the control system is activated. As soon as the
temperature drops outside, the temperature of the water to the
radiators (supply temp.) inside the house is increased
automatically.
The heat pumps ow temperature (menu 2.0) will hover around
the theoretical required value, which is in brackets on the
display.
Temperature of the heating system
The temperature of the heating system in relation to the
outdoor temperature can be determined by you by selecting a
heat curve and by using the “Offset heating curve” knob on the
heat pump’s front panel.
Operating status
The “Operating mode” button is used to set the required
operating mode.
The change does not need to be confirmed with the
enter button.
The current operating mode is shown on the front panel display
when the button is pressed and the mode changes when you
continue to press the button.
The display returns to the normal display mode once the enter
button is pressed.
The electric heater is only used for anti-freeze if it is deactivated
in the menu system for all operating modes.
There are different operating modes to choose:
1. “Auto”
Indoor unit automatically selects the operating mode by
taking the outdoor temperature into account. This means
that the operating mode switches between "Heating" and
“Hot water”.
The circulation pump is permitted to operate when there is
a need.
2. “AutoC”*
Indoor unit selects operating mode automatically (cooling
can also be selected now) by the outdoor temperature. This
means that the operating mode switches between
“Heating”, “Cooling” and “Hot water”.
The circulation pump is permitted to operate when there is
a need.
3. Heating
Only heating and hot water mode.
The circulation pump is in operation the entire time.
Electirc heater is energized if necessary.
4. Cooling*
Heat pump is used for cooling only if electric heater use is
allowed. Otherwise, it is used for both cooling and hot water.
The circulation pump is in operation the entire time.
5. Hot water
Only hot water is produced.
Only the compressor is operational.
6. Add. Heat only
Heat pump is not operational. The function is activated/
deactivated by pressing in the “operating mode button” for
7 seconds.
* To use the cooling functions, the system must be designed to
withstand low temperatures and cooling must be activated in
menu 9.3.3.
Changing the room temperature manually
If you want to temporarily or permanently increase or lower
the indoor temperature, turn the “Offset heating curve” knob
clockwise to increase or anticlockwise to lower. One line
approximately represents 1 degree change in room temperature.
NOTE
An increase in the room temperature may be inhibited
by the radiator or underoor heating thermostats, if so
these must be set at 0.
Comfort setting heating

11
Default Heating curve setting
The basic heating is set using menu 2.1.2 and with the “Heating
curve offset” knob.
If the room temperature does not reach the target, readjustment
may be necessary.
If you do not know the correct settings, use the basic data from
the automatic heating control system diagram on the right.
Offset heating curve
Heating curve
2 . 1 . 2
9
Menu 2.1.2 Heating curve
Heating curve offset for system 2 can be made in menu 3.1
NOTE
Wait one day between settings so as to stabilise the
temperatures.
Setting with diagrams
The diagram shows the relation between the outdoor temperature
in the area and the target supply water temperature of the heating
system. This is set under menu 2.1.2, “Heating curve”. Limitations,
which are not in the diagrams, can be set in the control system’s
permitted min and max temperatures. (See menu 2.1.4 and 2.3 as
well as 3.3 and 3.4)
Heating curve offset -2
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40 C
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
C
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (-2)
VÄRMEKURVA
HEATING CURVE
OFFSET HEAT CURVE
Outdoor temperature
Supply temperature
30
40
50
60
70
C
FRAMLEDNINGSTEMPERATUR
- 40 C
UTETEMPERATUR
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
VÄRMEKURVA
- 5
+ 5
FÖRSKJUTNING
VÄRMEKURVA (0)
Outdoor temperature
Supply temperature
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40 C
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
C
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (+2)
9
VÄRMEKURVA
Outdoor temperature
Supply temperature
Heating curve offset 0
Heating curve offset +2
HEATING CURVE
HEATING CURVE
OFFSET HEAT CURVE
OFFSET HEAT CURVE
Comfort setting heating

12
Readjusting the default settings
If the room temperature does not reach the target, readjustment
may be necessary.
Cold weather conditions
■ When the room temperature is too low, the “Heating curve”
value is increased in menu 2.1.2 by one increment.
■ When the room temperature is too high, the “Heating
curve” value is decreased in menu 2.1.2 by one increment.
Warm weather conditions
■ If the room temperature is low, increase the “Heating curve
offset” setting by one step clockwise.
■ If the room temperature is high, reduce the “Heating curve
offset” setting by one step anti-clockwise.
Heating system 2
If the heating system has two different type of emitter like
radiator and under floor heating, it is possible to set two
different calculated supply temperature. System 1 for higher
supply temperature can be set in menu 2.1.0, and system 2 for
lower supply temperature can be set in menu 3.0.
Vacation set back
When you are away from home for a long time, it is possible to
set the target supply water temperature for heating lower than
usual to save energy consumption. Also, it is possible to cancel
hot water operation during the period.
For details, see menu 7.5.0 Vacation set back.
Silent mode
If you like to reduce noise from outdoor unit, it is possible to do
by reducing the compressor speed and fan speed in outdoor unit.
For details, see menu 7.6.0 Silent mode.
Comfort setting with room sensor
If MH-RG10 is installed, operation mode is chosen not only by
outdoor temperature but also by room temperature.
Upper limit of the outdoor temperature to operate in Heating
mode can be set in menu 8.2.3 Stop temp Heating.
Lower limit of the outdoor temperature to operate in Cooling
mode can be set in menu 8.2.4 Start temp Cooling.
Target room temperature can be adjusted by turning the knob
on MH-RG10, and it is displayed in menu 6.3.
For details, see instruction manual for MH-RG10. The below
gure shows an example of mode transition.
NOTE
Mode transition wouldn’t happen even if MH-RG10 is
installed in case Heating or Cooling mode is chosen.
Choose Auto or AutoC in case room sensor is used.
Stop temp
Heating (8.2.3)
Start temp
Cooling (8.2.4)
Target
room temp
(6.3)
Hot water production
Heating
Cooling
Room temperature
Mode transition (in case AutoC is chosen)
Outdoor temperature
LEK
Knob
MH-RG10
Comfort setting heating

13
Comfort setting cooling
General
In the default setting, cooling operation is not allowed. In order
to activate, change the setting on the menu 9.3.3 Cooling
system to “On”.
NOTE
The climate system must manage cooling operation.
Setting must be made by the installer when
commissioning the system.
Settings must be made by the installer when commissioning
the system.
If a room sensor is connected, it starts and stops cooling based
on both the room and the outdoor temperature. The lowest
calculated supply water temperature is set in menu 2.2.4.
Cooling operated from the outdoor sensor in
operating mode AutoC
If the cooling system is set to “On” in menu 9.3.3 and the
outdoor temperature is greater or equivalent to the set start
temperature for cooling in menu 8.2.4, cooling starts.
Cooling stops when the outdoor temperature drops below the
set value minus the set value in menu 8.2.5.
The calculated supply water temperature is determined from the
selected cooling curve in menu 2.2.2 and the offset for cooling
curve, menu 2.2.1. Limitations, which are not in the diagram,
are included in the control system’s permitted min temperature.
0
0
C
20 C
30
5
10
20
framledningstemp
.
Utetem
40
15 k=1
k=2
k=3
Calculated supply water temperature
Outdoor temperature
e
Comfort setting cooling

14
MT500
*These graphs are based on the following conditions :
Inlet water temperature : 15°C
Outlet water temperature : 40°C
Outdoor air temperature : 7°C
Hot water Supply is unlimited in case 8ℓ/min at the condition as
the capacity is bigger than hot water supply.
Prioritizing
When the water temperature in the tank drops, heat pump
operation shifts to hot water production. In case there is
demand for both hot water and heating/cooling for long time,
operation mode is periodically switched between hot water and
heating/cooling. For details, see menu 1.0 Hot water temp and
8.5.0 Period settings.
Comfort setting hot water
The integrated water heater is a coil model and is heated by
circulating water, which is heated by the heat pump.
During “normal” consumption it is enough to run the heat
pump to supply the different tapping points of the house with
hot water. The temperature of the hot water in the water heater
then varies between the set values.
Under section 1.0 [N] Hot water temp. on page 25 there is a
complete description of menu settings for hot water
temperatures.
Available volume
<HMA100V, HMA100VM>
<HMS140VA, HMS140V>
MT300
0
200
400
600
800
1000
1200
1400
1600
48 50 52 54 56 58 60 62 64
Stop temp. HW(°C)
Supply water volume (ℓ)
Hot water volume
10ℓ/min
12ℓ/min
14ℓ /min
16ℓ /min
24ℓ /min
8ℓ/min
12ℓ/min
16ℓ/min
0
100
200
300
400
500
600
50 53 56 59 62 65
Stop temp. HW (°C )
Supply water volume (ℓ)
Hot water volume
0
50
100
150
200
250
300
350
400
450
50 53 56 59 62 65
12ℓ/min
16ℓ/min
Stop temp HW (°C)
Supply water volume (ℓ)
Hot water volume
Comfort setting hot water

15
Maintenance
Hydrolution requires minimal maintenance after commissioning.
Hydrolution contains many components and is why monitoring
functions are integrated to help you.
If something abnormal occurs, a message appears about
malfunctions in the form of different “alarm” texts in display.
Checking the safety valves in indoor unit
Indoor unit has been equipped with a safety valve for the water
heater as well as a safety valve for the climate system by the
installer.
For HT30, a safety relief valve is supplied with tank unit and
the valve is installed to water pipe by installer.
FL2BP5
The climate system’s safety valve
<HMA100V, HMA100VM>
Comfort setting hot water / Maintenance
Extra Hot Water
In all “Extra hot water” functions, the temperature of the hot
water increases temporarily. The temperature is rst increased
to an adjustable level by the compressor (menu 1.5) and then
the electric heater is energized until the water temperature
reaches the stop temperature (menu 1.4).
Temporary “Extra hot water” is activated manually, whilst time
based extra hot water is activated using the settings made in the
control computer.
When:
■ “A” appears above the icon, temporary extra hot water
is active.
■ “B” appears above the icon, time based extra hot water
is active.
NOTE
“ Extra hot water” usually means that the electric heater
is activated regardless of Allow add heat setting (menu
8.2.1) and therefore increases the electrical
consumption.
“Extra hot water” can be activated in three different
ways:
1. Periodic time based extra hot water
Interval between extra hot water operation is selected
in menu 1.7. Menu 1.8 shows when the next extra hot
water operation is due.
The increased temperature is maintained by the
electric heater for one hour.
2. Schedule time based extra hot water
The start and stop times for the day of the week when
the extra hot water operation is required are set in the
sub menus to menu 7.4.0.
The increased temperature is maintained by the
electric heater for the selected period.
3. Temporary extra hot water
Extra hot water operation starts when Extra hot water
button is pressed, and it is kept for 3 hours. The
operation is cancelled when the button is pressed
again during the period.
The increased temperature is maintained by the
electric heater until the period of time has expired.
NOTE
Heat pump will not start until Extra hot water
period finishes. It may cause insufficient hot
water supply if big demand comes.
FL2
BP5
MT500
MT300<HMS140VA, HMS140V>
FL2
BP5
MT300<HMS140VA, HMS140V>
FL2
BP5

16
Maintenance
The climate system’s safety valve (FL2) must be completely
sealed. Checks must be carried out regularly as follows:
■ Open the valve.
■ Check that water ows through the valve. If this does not
happen, replace the safety valve.
■ Close the valve again.
■ The heating system may need to be relled after checking
the safety valve, see the section “Filling the heating
system”.
Hot water heater safety valve
The water heater’s safety valve sometimes releases a little
water after hot water usage. This is because the cold water,
which enters the heater to replace the hot water, expands when
heated causing the pressure to rise and the safety valve to open.
Also check the water heater safety valve regularly. The
appearance and location of the safety valve differs between
different installations. Contact your installer for information.
Pressure gauge in indoor unit
The working range of the heating system is normally 0.5 – 1.5
bar when the system is closed. Check this on the pressure
gauge (BP5).
Emptying the hot water heater
The water heater is of the coil type and is drained using the
siphon principle. This can be done either via the drain valve on
the incoming cold water pipe or by inserting a hose into the
cold water connection.
Emptying the vessel
Contact your installer if the vessel in indoor unit needs
emptying.
Maintenance of outdoor unit
Outdoor unit is equipped with control and monitoring
equipment, however some exterior maintenance is still
necessary.
Make regular checks throughout the year that the inlet grille is
not clogged by leaves, snow or anything else. During the cold
months of the year, check to make sure that there isn’t a build up
of ice or frost under outdoor unit. Strong wind combined with
heavy snowfall can block the intake and exhaust air grilles.
Make sure that there is no snow on the grilles.
Also check that the condensation water drain under outdoor unit
is not blocked.
If necessary the outer casing can be cleaned using a damp
cloth. Care must be exercised so that the heat pump is not
scratched when cleaning. Avoid spraying water into the grilles
or the sides so that water penetrates into outdoor unit. Prevent
outdoor unit coming into contact with alkaline cleaning agents.
!WARNING!
Rotating fan
Saving tips
Your Hydrolution produces heat and hot water according to
your needs. It also attempts to carry out all requirements with
all available “aids” from the control settings made.
The indoor temperature is naturally affected by the energy
consumption. Therefore, take care not to set a temperature
higher than necessary.
Other known factors that affect the energy consumption are,
for example, hot water consumption and the insulation level of
the house, as well as the level of comfort you require.
Also remember:
■ Open the thermostat valves completely (except in the
rooms that are to be kept cooler for various reasons, e.g.
bedrooms).
Thermostat valves in the radiators and floor loops can
negatively affect the energy consumption. They slow the ow
in the heating system, which the heat pump wants to
compensate with increased temperatures. It then works harder
and consumes more electrical energy.

17
Dealing with comfort disruption
Dealing with comfort disruption
Use the following list to find and remedy any heating or hot
water problems.
Symptom Cause Action
Low hot water temperature or a lack of hot
water
Circuit or main MCB tripped. Check and replace blown fuses.
Heat pump and immersion heater do not heat. Check and replace any blown circuit and
main fuses.
Possible earth circuit-breaker tripped. Reset the earth circuit-breaker, if the earth
circuit-breaker trips repeatedly, call an
electrician.
Switch (SF1) set to mode 0. Set the switch to 1.
Large hot water demand. Wait a few hours and check if the hot water
temperature rises.
Too low start temperature setting on the
control system.
Adjust the start temperature setting in menu
1.2.
Low room temperature. Possible earth circuit-breaker tripped. Reset the earth circuit-breaker, if the earth
circuit-breaker trips repeatedly, call an
electrician.
Heat pump and immersion heater do not heat. Check and replace any blown circuit and
main fuses.
Incorrect setting of “Heating curve, offset”
and/or “Cooling curve, offset”.
Adjust the settings.
Check menu 2.1.1, 2.1.2 for heating system 1
3.1, 3.2 for heating system 2
2.1.1, 2.2.2 for cooling system
Stop temp heating setting is too low. Adjust the setting. Check menu 8.2.3
Circuit or main MCB tripped. Check and replace blown fuses.
Heat pump in incorrect operating mode “Hot
water” or “Cooling”.
Change operating mode to “Auto” or “ Au-
toC”.
The current limiter has restricted the current
because many power consumers are being
used in the property.
Switch off one/several of the power consu-
mers.
High room temperature. Incorrect setting of “Heating curve, offset”
and/or “Cooling curve, offset”.
Adjust the settings.
Check menu 2.1.1, 2.1.2 for heating system 1
3.1, 3.2 for heating system 2
2.1.1, 2.2.2 for cooling system
Heat pump in incorrect operating mode. Change operating mode to “AutoC”.
Start temp cooling setting is too high. Adjust the setting. Check menu 8.2.4.
Heat load is too high. Remove the excess heat load.
The compressor does not start. Minimum time between compressor starts
alternatively time after power switch on not
being achieved.
Wait 30 minutes and check if the compressor
starts.
Alarm tripped. See section “Alarms”.
Alarm cannot be reset. Activate operating mode “Add. heat only”.
Panel gone out. Check and replace any blown circuit andmain
fuses.
Check that the circuit breaker to the indoor
unit is not off.
Set switch (SF1) to standby “ ”.

18
Dealing with comfort disruption
Operating mode “Add. heat only”
In the event of malfunctions that cause a low indoor temperature,
you can normally activate “Add. heat only” in indoor unit, which
means that heating only occurs with the immersion heater.
Activate the mode by holding in the operating mode button
for 7 seconds.
Note that this is only a temporary solution, as heating with the
immersion heater does not make any savings.
Emergency mode
Emergency mode is activated by setting the switch to “ ”.
It is used when the control system and thereby operating mode
“Add. heat only” do not function as they should. Emergency
mode is activated by setting switch (SF1) to “ ”.
The following applies in emergency mode:
■ The front panel is not lit and the control computer in
indoor unit is not connected.
■ Outdoor unit is off and only the circulation pump and
immersion heater in indoor unit are active.
■ An electrical step of 4 kW is connected. The immersion
heater is controlled by a separate thermostat (BT30).
■ The automatic heating control system is not operational, so
manual shunt operation is required. Call installer.
The phenomena mentioned below is not malfunction.
The air conditioning system
sounds as if water is
draining from it.
Sounds of rustling or gurgling may be heard when the operation is started, when the compressor is
activated/deactivated during operation, or when the operation is stopped. These are the sounds of the
refrigerant flowing through the system.
Sounds of rustling or
gurgling may be heard from
a stopped indoor unit.
These sounds can be heard when the air conditioning system is performing automatic control.
The air conditioning system
cannot start operating again
immediately after stopping.
Outdoor unit does not restart during the first 3 minutes after stopping operation. This is because a
circuit for protecting the compressor is activated (the fan is operating during this period).
The outdoor unit discharges
water or steam during
heating operation.
Water or steam is discharge during defrosting operation which removes frost built up on the surface of
the heat exchanger in the outdoor unit in heating mode.
The outdoor unit fan is not
running even when the
system is in operation.
The fan speed is automatically controlled according to the ambient temperature. It may be stopped in
high ambient temperature in case of heating, and in low ambient temperature in case of cooling. Also,
the fan is stopped during defrosting operation.
REQUESTS The fan will suddenly begin to operate even if it is stopped. Do not insert finger and/or stick.
Hissing sounds are heard
when the operation is
stopped or during defrost
operation.
These sounds are generated when the refrigerant valve inside the air conditioning system is activated.