Midea romstol ecoHEAT User manual

OPERATION MANUAL
Thank you very much for purchasing our product.
Before using your unit, please read this manual carefully and keep it for future reference.
Scan the QR code to read
the manual in different
languages.
Scan the QR code to install
the control APP.

This manual gives detailed description of the precautions that should be
brought to your attention during operation.
In order to ensure correct service of the wired controller, please read this
manual carefully before using the unit.
For convenience of future reference, keep this manual after reading it.
CONTENTS
1
About the documentation
For the user
1.2
1.1
2
The appearance of the wired controller
Status icons
2.2
2.1
01
02
05
06
07
3
About home pages
3.1
GENERAL SAFETY PRECAUTIONS
A GLANCE OF THE USER INTERFACE
USING HOME PAGES

4
About the menu structure
To go to the menu structure
To navigate in the menu structure
4.2
4.1
4.3
5
Screen unlock
Turning ON/OFF controls
Adjusting the temperature
Adjusting space operation mode
5.2
5.1
5.3
5.4
7
Safety precaution
Other precautions
Installation procedure and matching setting of
wired controller
Front cover installation
7.2
7.1
7.3
11
11
11
12
14
19
22
35
38
46
39
7.4
MENU STRUCTURE
BASIC USAGE
INSTALLATION MANUAL
8
Modbus port communication specification
8.1 48
MODBUS MAPPING TABLE
6
Wired controller setting
Mobile device setting
6.2
6.1 25
28
NETWORK CONFIGURATION GUIDELINES

1 GENERAL SAFETY PRECAUTIONS
1.1 About the documentation
The original documentation is written in English. All other languages are
translations.
The precautions described in this document cover very important topics,
follow them carefully.
All activities described in the installation manual must be performed by
an authorized installer.
1.1.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING
Indicates a situation that could result in burning because of
extreme hot or cold temperatures.
01

WARNING
Indicates a situation that could result in death or serious injury.
1.2 For the user
If you are not sure how to operate the unit, contact your installer.
02
CAUTION
Indicates a situation that could result in minor or moderate injury.
Indicates a situation that could result in equipment or property
damage.
INFORMATION
i
Indicates useful tips or additional information.
NOTE

CAUTION
Do NOT rinse the unit. This may cause electric shocks or fire.
The 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 must be supervised to ensure that they do not play
with the product.
03
Do NOT place any objects or equipment on top of the unit.
Do NOT sit, climb or stand on the unit.
NOTE

Units are marked with the following symbol:
This means that electrical and electronic products may not be mixed with
unsorted household waste. Do not try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, of oil and of other
parts must be done by an authorized installer and must comply with
applicable legislation. Units must be treated at a specialized treatment
facility for reuse, recycling and recovery. By ensuring this product is
disposed of correctly, you will help to prevent potential negative
consequences for the environment and human health. For more
information, contact your installer or local authority.
04

05
2 A GLANCE OF THE USER INTERFACE
2.1 The appearance of the wired controller
Navigate the
cursor on the
display/navigate
in the menu
structure/adjust
the settings
Enter the menu
structure from
the home page
Come back to
the up level
Turn on or off the
space operation
mode or DHW
mode turn on or
off the function
in the menu
structure
Long press for
unlocking /locking
the controller
unlock /lock some
function such as
''DHW TEMP.
ADJUST''
Go to the next step when
programming a schedule in
the menu structure / confirm
a selection/enter a submenu
in the menu structure

06
2.2 Status icons
At the next scheduled action,
the desired temp. will decrease.
the desired temp.
will not change.
the desired temp.
will decrease.
the desired temp.
will increase.
ECO mode
is activated
Holiday away
/home
is activated
7
Silent mode
is activated
Tank heater is activated
The solar energy is activated
Fan coil
The floor heating
Water flow desired temp.
Radiator
Fan coil Radiator The floor heating
The compressor is activated
Turn off
Turn on
OFF
Heat mode
Cool mode
Auto mode
Timer icon
Lock icon
Outdoor ambient temp.
WLAN icon
The disinfect
function is activated
Domestic hot water
ON
DHW tank temp.
Error or protection icon
OFF
ON
Weekly schedule icon
Domestic hot water
Prevent
freezing mode
is activated
Defrost mode
is activated
Smart grid icon
FREE
Smart grid
Free electricity
VALLEY PEAK
The pumpi is activated
Valley electricity Peak electricity
Additional heat source
Additional heat source
Electric pipe heat source
Room desired temp.

07
3 USING HOME PAGES
3.1 About home pages
Room desired temperature (ROOM )
Water flow desired temperature (MAIN)
DHW tank actual temperature (TANK)
DHW=domestic hot water
You can use the home pages to read out and change settings that are
meant for daily usage. What you can see and do on the home pages is
described where applicable. Depending on the system layout, the following
home pages may be possible:
home page1 ：
If you have set the WATER FLOW TEMP. as YES and ROOM TEMP. as
NON, the system has the function including floor heating and making hot
water. The following page will appear:
NOTE
All the pictures in the manual are used to explain, the actual pages in the
screen may have some difference.

08
home page2 ：
If you have set the WATER FLOW TEMP. as NON and ROOM TEMP.
as YES, the system has the function including floor heating and making
hot water. The following page will appear:
NOTE
The interface should be installed in the floor heating room to check the
room temperature.

09
home page3 ：
MAIN
PAGE
ADDITION
PAGE
If the DHW MODE is set NON , and if ''WATER FLOW TEMP.'' is set YES,
''ROOM TEMP.'' is set YES,There will be main page and additional page.
The system has the function including floor heating and space cooling for
fan coil, home page 3 will appear:
2

10
home page4 ：
MAIN
PAGE
ADDITION
PAGE
If the DHW MODE is set YES. There will be main page and addition
page. The system has the function including floor heating, space
cooling for fan coil and domestic hot water, home page 4 will appear:
2

11
4 MENU STRUCTURE
4.1 About the menu structure
You can use the menu structure to read out and configure settings that are
NOT meant for daily usage. What you can see and do in the menu structure
is described where applicable.
4.2 To go to the menu structure
From a home page, press ''MENU''. Result: The menu structure appear：
4.3 To navigate in the menu structure
Use''▼''、 ''▲'' to scroll.
ENTER
OK
MENU
OPERATION MODE
PRESET TEMPERATURE
DOMESTIC HOT WATER(DHW)
SCHEDULE
OPTIONS
CHILD LOCK
ENTER
OK
MENU
SERVICE INFORMATION
OPERATION PARAMRTER
FOR SERVICEMAN
WLAN SETTING

12
5 BASIC USAGE
5.1 Screen Unlock
If the icon is on the screen, the controller is locked. The
following page is displayed:
Press any key, the icon will flash. Long press the
''UNLOCK'' key. The icon will disappear, the interface can
be controlled.

13
The interface will be locked if there is no handing for a long time(about 120
seconds) If the inerface is unlocked, long press "unlock", the interface will
be locked.
UNLOCK UNLOCK
Long press
UNLOCK
Long press
UNLOCK

14
5.2 Turning ON/OFF controls
Use the interface to turn on or off the unit for space heating or cooling.
The ON/OFF of the unit can be controlled by the interface if the ROOM
TEHERMOSTAT is NON.(See ''ROOM THERMOSTAT SETTING'' in
"Installation and owner's manual (M-thermal split indoor unit)")
Press ''◄''、 ''▲'' on home page,the black cursor will appear:
1 ) When the cursor is on the temperature of space operation mode side (Including
heat mode , cool mode and auto mode ), press ''ON/OFF'' key to
turn on/off space heating or cooling.
A
ON/OFF
OFF

15
ON/OFF
ON/OFF
OFF
OFF
If the DHW TYPE is set NON,then following pages will display:
If the TEMP. TYPE is set ROOM TEMP. , then following pages will display:

16
Use the room thermostat to turn on or off the unit for space heating or
cooling.
①The room thermostat is SET YES(see ''ROOM THERMOSTAT
SETTING'' on "Installation and owner's manual (M-thermal split indoor
unit)") the unit is turned on or off by the room thermostat, press ON/OFF on
the interface, the following page will display:
②DUAL ROOM THERMOSTAT is set YES(see ''ROOM THERMOSTAT
SETTING'' in "Installation and owner's manual (M-thermal split indoor unit)"
).The room thermostat for fan coil is turned off ,the room thermostat for the
floor heating is turned on,and the unit is running, but the display is OFF. The
following page is displayed:
Turning on or off cooling/
heating mode is controlled by
the room thermostat.
Please turn on or off cooling/
heating mode by the room
thermostat.
CONFIRM
OK
2

17
Use the interface to turn on or off the unit for DHW.Press '' ► ''、 ''▼''on
home page,the black cursor will appear:
2
OFF
OFF