Mitsubishi Electric Ecodan User manual

Homeowner Quick Start Guide
Telephone: [phone]
email: [email protected]
www.mitsubishielectric.co.uk/domesticheating
UNITED KINGDOM Mitsubishi Electric Europe Living Environmental Systems Division
Travellers Lane, Hatfield, Hertfordshire, AL10 8XB, England
General Enquiries Telephone: [phone]
IRELAND Mitsubishi Electric Europe Westgate Business Park, Ballymount, Dublin 24, Ireland
Telephone: Dublin [phone] Fax: Dublin [phone] International code: (003531)
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are trademarks of Mitsubishi Electric Europe B.V. The company reserves the right to make any variation in technical specification to the
equipment described, or to withdraw or replace products without prior notification or public announcement. Mitsubishi Electric is constantly
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This booklet has been created to enable you to quickly personalise the
Heating System controls to provide the best operation conditions for your
home. If you require more in depth information and system settings
please refer to the instruction booklet provided with the cylinder unit.
Your heating system consists of:
Introduction to Your
New Mitsubishi Electric
Ecodan System
Air Source
Heat Pump
(Located outside)
Heating and Hot Water
Control Panel
Cylinder Unit

How to run your system efficiently
The Ecodan provides water at a lower temperature than the gas or
oil fired boiler you may be used to. This means that you may notice
some differences between this system and ones you have used before.
Below is a list of the main differences and how this will affect you.
To optimise running costs it is advisable the homeowner seeks
the cheapest possible electricity tariff. An internet search facility
like www.uswitch.com will be able to help.
Low flow temperatures
Central heating will not
run whilst the hot water
tank is being heated.
Advanced Controls
Radiators will not feel
hot to the touch.
Central heating may be
slower to respond when
you change the set
temperature.
Room temperature may
decrease a little during
water tank heat up.
Self learning controls
mean that the system
runs more efficiently.
This is not a
problem for heating.
It is advisable not to hang
clothes over the radiators
as it prevents the heat
from passing to the air
in the room.
Reaction times differ
between systems of
different sizes. Please
ensure you wait sufficient
time before adjusting the
controls again.
Use the schedule
function to heat water
up overnight or during
a time when the home
is unoccupied.
It is nearly always most
efficient to run the system
in “Room Auto Adaptation”
mode for heating.
Difference to
Oil/Gas boiler
Implication Action Needed
Save Energy, Save Money
Heat energy from the outside air and a little mains
electricity is used by the Air Source Heat Pump to
heat refrigerant to a high temperature. This heat is
then transferred to water which flows into your home
for central heating and also for hot water for baths
etc. The way the heat pump works is similar to a
refrigerator in reverse.
Air Source Heat Pump
The cylinder unit contains a hot water tank as well as
various heating parts to complete your heating systems,
such as water pumps and safety valves.
Controls
Your hot water and central heating system is controlled
by the control panel which will either be attached to the
front of the cylinder unit or attached to a wall in your
home. The control panel allows you to customise the
settings to your home.
Cylinder Unit
The system used to transfer heat from the Ecodan to the home.
Most often large radiators, but sometimes under floor heating.
TRVs
Your radiators may be fitted with thermostatic radiator
valves (TRVs). These will adjust the amount of heat
emitted from the radiator dependent on the demand.
Each valve will have numbers that can be adjusted by
turning the top of the valve. The higher the number, the
warmer your room will become and the more energy you
will use resulting in higher bills. Check your TRVs to
make sure they are not set too high.
Heating System
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No Icon Description
1 Legionella When this icon is displayed Legionella prevention mode
prevention is active.
2 Heat pump When this icon is displayed the Heat Pump is in use.
3 Electric heater
When this icon is displayed the electric heaters are in use.
4 Target Target flow temperature
temperature Target room temperature
Compensation curve
5 OPTION Pressing the function button below this icon will display
the option screen.
6 + Increase desired temperature.
7 - Decrease desired temperature.
8 Information Pressing the function button below this icon displays
the information screen.
9 Space heating Heating mode.
mode
10 Domestic hot Normal or ECO mode.
water mode
11 Holiday mode When this icon is displayed ‘Holiday mode’ activated.
12 Timer Prohibited Stand-by
Stop Operating
Controller
Display
Settings
To change the settings of your heating
system please use the main controller
located on the front panel of the
cylinder unit or on a wall. The following
is a quick guide to viewing the main
settings. Should you require more
information please see the instruction
booklet included with the cylinder.
Main controller parts
Customising
Settings For
Your Home
Letter Name Function
A Screen Screen in which all information is displayed.
B Menu Access to system settings for initial set up
and modifications.
C Back Return to previous menu.
D Confirm Used to select or save. (Enter key)
E Power/Holiday If system is switched off, pressing once will turn
system on. Pressing again when system is switched
on will enable Holiday Mode. Holding the button
down for 3 secs will turn the system off.
1-4 Function keys Used to scroll through menu and adjust settings.
Function is determined by the menu screen visible
on screen A.
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The following menus will be displayed:
- DHW (Domestic Hot Water)
- Heating
- Schedule
- Holiday
- Initial setting
- Service (Password protected)
To access the main settings menu, press button B ‘MENU’.
Use the relevant function keys to edit each initial setting then press
CONFIRM to save the setting.
To return to the main settings menu press the BACK button.
From main settings menu use F2 and F3 Function Keys to highlight
‘Initial Settings’ icon and select by pressing CONFIRM.
Use F1 and F2 Function Keys to scroll through the menu list.
When ‘Date/Time’ is highlighted then press CONFIRM to edit.
Changing Date and Time
Viewing System Settings
Use the function buttons to
access more information.
When this screen is displayed
pressing F1* will display the
current status whilst pressing
F4* will transfer the user to the
option menu screen.
*Function Key
General Operation
This screen shows the target temperature, space heating mode,
DHW mode any additional heat sources being used, holiday mode,
and the date and time.
Current
Operating
Condition
Option Screen
This screen shows if the heating and/(or) hot water are ON (►), Prohibited ()
or Scheduled (). You can also edit/activate the holiday setting.
Home Screen
Turning on Priority Hot Water / Hot Water / Heating
Forced DHW to activate press F1
DHW operating mode to change mode press F2
Space heating operating mode to change mode press F3
Holiday mode to access Holiday screen press F4
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The following is to be used as a guide to possible problems. It is not exhaustive and all
serious problems should be investigated by the installer or another competent person.
Users should not attempt to repair the system themselves. At no time should the system
be operating with the safety devices by-passed or plugged in.
Troubleshooting
Cold water at taps
Hot water may be scheduled off:
Please check schedule settings and
alter if necessary.
All the hot water from tank may be used:
Ensure DHW mode is operating and wait
for tank to re-heat.
Heat pump or electric heaters not working:
Contact installer.
Water discharges from one
of the relief valves
The system has overheated/over pressurised:
Please switch off power to the heat
pump and any immersion heaters then
contact installer.
Small amounts of water drip
from one of the relief valves
Dirt may be preventing a tight seal in the valve:
Please twist the valve cap in the direction
indicted until a click is heard. This will release
a small amount of water flushing dirt from the
valve. Be very careful the water released will
be hot. Should the valve continue to drip,
contact installer as the rubber seal may be
damaged and need replacing.
Noisy pipework
Air may be trapped in the system:
Try bleeding radiators (if present) using
a radiator key, if the symptoms persist
contact installer.
Heating system does not get
up to set temperature
Prohibit, schedule or holiday mode selected:
Check settings and change as appropriate.
Incorrectly sized radiators:
Contact installer.
The room in which the temperature sensor
is located is at a different temperature to
the rest of the house: Reposition the
temperature sensor to a more suitable room.
An error code appears in the
main controller display
The indoor or outdoor unit is
reporting an abnormal condition:
Make a note of the error
code number and contact installer.
Pump runs without reason for short time
Pump jam prevention mechanism to inhibit
the build up of scale. Normal operation, no
action necessary.
Mechanical noise heard coming
from cylinder unit
Heaters switching on/off
Normal operation, no action required.
3-way valve changing position between
DHW and heating mode:
Normal operation, no action necessary.
Schedule function inhibits the
system from operating but the
outdoor unit operates
Freeze stat. Function is active:
Normal operation, no action necessary.
Heating emitter is hot in the DHW
mode (The room temperature rises)
The 3-way valve may have foreign objects in
it, or hot water may flow to the heating side
due to malfunctions. Contact installer.
‘Smoke’ is blown from the front
of the Ecodan in cold weather
This is warm air being blown from the
Ecodan to ensure the internal parts don’t
freeze. It is known as the defrost cycle.
Normal operation, no action necessary.
Power failure
All settings will be saved for 1 week with
no power, after 1 week Date/Time ONLY
will be saved.
Schedule
When setting up the system your installer should discuss with you your
heating and Domestic Hot Water requirements so that the optimum schedule
can be created. Activation or deactivation of the schedule is set up in the
option screen. (See page 3). Detailed setting instructions are available in
the instruction booklet provided with the cylinder unit.
The PREVIEW screen allows you to view the current settings.
Days of the week are displayed across the top of the screen. Where the day
appears underlined, the settings are the same for all those days underlined.
Hours of the day are shown as
a bar across the main part of the
screen. Where the bar is solid
black, heating/DHW (whichever
is selected) is allowed.
From the main settings menu (see page 9) use F2 and F3 Function Keys
to highlight the schedule icon then press CONFIRM.
The schedule sub menu
will be displayed.
The icons show the following modes;
• Heating
• DHW
Use F2 and F3 Function Keys to move
between mode icons, press CONFIRM
to be shown the PREVIEW screen for
each mode.
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