Customising Settings for your Home
To change the settings of your heating/cooling system please use the main con-
troller located 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 Electric dealer.
Cooling mode is available for ERS series only. However, Cooling mode is not avail-
able when the indoor unit is connected to PUHZ-FRP.
<Main controller parts>
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 indoor
unit may potentially become exposed to damage.
<Main screen icons>
Screen in which all information is displayed
Access to system settings for initial set up and
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.
When this icon is displayed 'Legionella prevention
mode' is active.
'Heat pump' is running.
When this icon is displayed the 'Electric heaters'
(booster or immersion heater) are in use.
Target flow temperature
Target room temperature
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 Zone and Zone2.
Pressing the function button below this icon displays
the information screen.
Zone or Zone2
Normal or ECO mode
When this icon is displayed 'Holiday mode' activated.
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 (NOT for the user) is inserted.