Controls - Mitsubishi Electric EHST20C-VM6HA Service Manual

9

CONTROLS

9-1. Main Controller
F1 F2
B C
12
10
9
8 7
F3 F4
D
2
11 1 3
6 5
<Main controller parts>
Letter Name
A Screen
B Menu
C Back
A
Confirm
D
Power/Holiday
E
F1-4 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.
E
Please beware that without these safety functions enabled the water circuit
is exposed to risk and may, potentially, be damaged.
<Main screen icons>
Icon
Legionella
1
prevention
 Heat pump
3 Electric heater
Target
4
temperature
5 OPTION
6 +
7 -
4
8 Information
Space heating
9
mode
10 DHW mode
11 Holiday mode
1
8
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 quick view menu.
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