Setting The Main Controller; Main Settings Menu; General Operation - Mitsubishi Electric EHST20C-VM2C.UK Service Manual

9-2. Setting the Main Controller

After the power has been connected to the outdoor and cylinder units (See chapter 7) 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 automatically 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 minutes 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 25) to turn on the system. Before turning on the system, perform initial settings as instructed below.

9-3. 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)

General Operation

● To find the icon that you wish to set, use the F2 and F3 buttons to move between the icons.
● The highlighted icon will appear as a larger version of the center of the screen.
● Press CONFIRM to select and edit the highlighted mode.
● Follow the <Main Controller Menu Tree> for further setting, using ▼▼ buttons for scrolling or F1 to F4 for selecting.
OCH570
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Main menu
Long Press