Setting The Main Controller; Main Settings Menu; Initial Settings - Mitsubishi Electric Ecodan EHST20 serie Para El Instalador

5
System Set Up

Setting the Main Controller

After the power has been connected to the outdoor and cylinder units (See chap-
ter 4.6) the initial system settings can be entered via the main controller.
1. Check all breakers and other safety devices are correctly installed and turn on
power to the system.
2. When the main controller switched on for the first time, the screen automati-
cally goes to Initial settings menu, Language setting screen and Date/Time
setting screen in order.
3. Main controller will automatically start up. Wait approximately 6 mins whilst the
control menus load.
4. When the controller is ready a blank screen with a line running across the top
will be displayed.
5. Press button E (Power) (refer to page 34) to turn on the system. Before turning
on the system, perform initial settings as instructed below.

Main Settings Menu

The main settings menu can be accessed by pressing the MENU button. To re-
duce the risk of untrained end users altering the settings accidentally there are
two access levels to the main settings; and the service section menu is password
protected.
User level – Short press
If the MENU button is pressed once for a short time the main settings will be
displayed but without the edit function. This will enable the user to view current
settings but nOt change the parameters.
installer level – long press
If the MENU button is pressed down for 3 secs the main settings will be displayed
with all functionality available.
The following items can be viewed and/or edited (dependent on access level).
• Domestic Hot water (DHW)
• Heating
• Schedule timer
• Holiday mode

• Initial settings

• Service (Password protected)
Use the F2 and F3 buttons to move between the icons. The highlighted icon will
appear as a larger version in the centre of the screen. Press CONFIRM to select
and edit the highlighted mode.
initial Settings
From the Initial settings menu the installer can set the following.
• Date/Time
• Language
• ºC/ºF
• Temp. display
• Contact number
• Time display
• Room sensor settings
1. Use buttons F1 and F2 to move scroll through the menu list. When the title is
highlighted press CONFIRM to edit.
2. Use function buttons appropriate to edit each setting then press CONFIRM to
save the setting.
<room sensor settings>
For room sensor settings it is important to choose the correct room sensor de-
pending on the heating mode the system will operate in.
1. From the Initial settings menu select Room sensor settings.
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Icon Description
Hot water (DHW)
Heating
Schedule timer
Holiday mode
Initial settings
Service