Controls - Mitsubishi Electric EHST20C-VM6HB Service Manual

9

CONTROLS

9-1. Main Controller
F1 F2
B C D
12 15 14
10
9
8
7
OCH531
A
F3 F4
E
11 1 2 3
6 5
<Main controller parts>
Letter Name
A Screen
B Menu
C Back
Confirm
D
Power/Holiday
E
F1-4 Function keys
*1
When the system is switched off or the power supply is disconnected, the
cylinder unit protection functions (e.g. freeze stat. function) will NOT oper-
ate. Please beware that without these safety functions enabled the cylinder
unit may potentially become exposed to damage.
<Main screen icons>
Icon
Legionella
1
prevention
 Heat pump
 Electric heater
Target
4
temperature
5 OPTION
13
6 +
7 -
8 Z1 Z
4
Information
Space heating
9
mode
10 DHW mode
11 Holiday mode
1
1
Current
temperature
14
15

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
system 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.
'Heat pump' is running.
Defrosting.
Emergency heating.
When this icon is displayed the 'Electric heaters'
(booster or immersion heater) 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 switch-
es between Zone1 and Zone2.
Pressing the function button below this icon displays
the information screen.
Heating mode
Zone1 or Zone
Normal or ECO mode
When this icon is displayed 'Holiday mode' activated.
Timer
Prohibited
Stand-by
Stop
Operating
Current room temperature
Current water temperature of DHW tank
The Menu button is locked or the switching of the
operation modes between DHW and Heating opera-
tions are disabled in the Option screen.
SD memory card is inserted. Normal operation.
SD memory card is inserted. Abnormal operation.