Controls - Mitsubishi Electric EHPT20Q-VM2EA Service Manual

9

CONTROLS

9-1. Main Controller
F1 F2
B C
11 14 13
9
8
7
6
Main screen
GCH15010
F3 F4
D
10
1 2
4
5
<Main controller parts>
Letter Name
A Screen
B Menu
A
C Back
D Confirm
E Power/Holiday
F1-4 Function keys
E
*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 and installation may potentially become exposed to damage.
<Main screen icons>
Icon
1 Heat pump
2 Electric heater
3 Target
12 temperature
4 OPTION
3
5 +
6 -
7 Z1 Z2
Information
8 Space heating
mode
9 DHW mode
10 Holiday mode
11
12
Current
temperature
13
14
*2 To lock or unlock the Menu, press the BACK and CONFIRM keys
simultaneously for 3 seconds.
14
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
'Heat pump' is running.
Defrosting.
Emergency heating.
When this icon is displayed the 'Electric heaters'
(booster 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 switches
between Zone1 and Zone2.
Pressing the function button below this icon displays
the information screen.
Heating mode
Zone1 or Zone2
Domestic hot water heating mode
When this icon is displayed 'Holiday mode' activated.
Timer is activated.
Prohibited
Server control is activated.
Stand-by
Stopped
Operating
Current room temperature
Current water temperature of thermal store 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.(*2)
SD memory card is inserted. Normal operation.
SD memory card is inserted. Abnormal operation.