Controls; Main Controller; Main Controller Parts; Main Screen Icons - Mitsubishi Electric EHSD-MEC.UK Service Manual

9

CONTROLS

9-1. Main Controller

F1 F2
B C
12 15
10
9
8
OCH571
F3 F4
D
14 11
1 2 3
6
7
Main screen
<Main controller parts>
Letter Name
A Screen
B Menu
C Back
A
D Confirm
E Power/Holiday If system is switched off pressing once will turn
F1-4 Function keys
*1
When the system is switched off or the power supply is disconnected,
the hydrobox protection functions (e.g. freeze stat. function) will NOT
E
operate. Please beware that without these safety functions enabled the
hydrobox may potentially become exposed to damage.
<Main screen icons>
Icon
1 Legionella
prevention
2 Heat pump
3 Electric heater When this icon is displayed the 'Electric heaters'
4 Target
13
temperature
5 OPTION
4
6 +
7 -
8 Z1 Z2
Information
9 Space heat-
ing/cooling
mode
5
10 DHW mode
11 Holiday mode
12
13
Current
temperature
14
15
*2 This unit is in Stand-by whilst other indoor unit(s) is in operation by
priority.
*3 To lock or unlock the Menu, press the BACK and CONFIRM keys
simultaneously for 3 seconds.
21
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)
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
(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 option screen.
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 Zone2
Cooling mode
Normal or ECO mode
When this icon is displayed 'Holiday mode' activated.
Timer
Prohibited
Server control
Stand-by
Stand-by (*2)
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.(*3)
SD memory card is inserted. Normal operation.
SD memory card is inserted. Abnormal operation.