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Customising Settings For Your Home; Main Controller - Mitsubishi Electric EHST20 Series Operation Manual

Cylinder unit/hydrobox
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4

Customising Settings for your Home

To change the settings of your heating system please use the main controller lo-
cated on the front panel of the cylinder unit or hydrobox. The following is a guide
to viewing the main settings. Should you require more information please contact
your installer or local Mitsubishi dealer.
F1
F2
b
C
12
10
9
8
7
7
a
F3
F4
e
d
11
1
2
3
6
5

Main Controller

<Main controller parts>
letter
name
A
Screen
B
Menu
C
Back
Confirm
D
E
Power/Holiday
F-4
Function keys
*1
When the system is switched off or the power supply is disconnected, the
cylinder protection functions (e.g. freeze stat. function) will NOT operate.
Please beware that without these safety functions in operation the cylinder
may be damaged.
<Main screen icons>
icon

Legionella
prevention
2
Heat pump
3
Electric heater
4
Target
temperature
5
OPTION
6
+
7
-
8
Information
9
Space heating
4
mode
0
DHW mode

Holiday mode
2
Function
Screen in which all information is displayed
Access to system settings for initial set up and
modifications.
Return to previous menu.
Used to select or save. (Enter key)
If system is switched off pressing once will turn sys-
tem 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)
Used to scroll through menu and adjust settings.
Function is determined by the menu screen visible
on screen A.
description
When this icon is displayed 'Legionella prevention
mode' is active.
When this icon is displayed the 'Heat pump' is in
use.
When this icon is displayed the 'Electric heaters' are
in use.
Target flow temperature
Target room temperature
Compensation curve
Pressing the function button below this icon will dis-
play the option screen.
Increase desired temperature.
Decrease desired temperature.
Pressing the function button below this icon displays
the information screen.
Heating mode
Normal or ECO mode
When this icon is displayed 'Holiday mode' activated.
Timer
Prohibited
Stand-by
Stop
Operating

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