Mitsubishi Electric EHST20-Serie Installationshandbuch Seite 36

5
System Set Up
<Manual operation>
During the filling of the system the pump and 3-way valve can be manually over-
ridden using manual operation mode.
When manual operation is selected a small timer icon appears in the screen. The
function selected will only remain in manual operation for a maximum of 2 hours.
This is to prevent accidental permanent override of the FTC3.
. From the service menu use F and F2 buttons to scroll through list until Manu-
al Operation is highlighted.
2. Press CONFIRM.
3. Manual operation menu screen is displayed.
4. To activate manual operation press the function button under the desired part.
5. To return to service menu press MENU or BACK button.
►Example
Pressing F3 button will switch manual operation mode ON for the main 3-way
valve. When filling of the tank is complete the installer should access this menu
again and press F3 to deactivate manual operation of the part. Alternatively after
2 hours manual operation mode will no longer be active and FTC3 will resume
control of the part.
nOte:
Manual operation and heat source setting can not be selected if the system
is running. A screen will be displayed asking the installer to stop the sys-
tem before these modes can be activated.
the system automatically stops 2 hours after last operation.
<Heat source setting>
The default heat source setting is heat pump and all electric heaters present in
the system to be operational. This is referred to as Standard operation on the
menu.
. From the service menu use F and F2 buttons to scroll through list until
is highlighted.
2. Press CONFIRM.
3. Heat source setting menu screen is displayed.
4. Press F3 button until preferred heat source is displayed.
5. Press CONFIRM.
6. To return to service menu press MENU or BACK button.
7. If you wish to return to the service menu without saving the setting press re-
turn button. You will be asked if you are sure you wish to cancel the changes.
Choose Yes or No as appropriate.
35
Manual operation menu screen
System off prompt screen
Heat source setting screen
Cancel last action screen