[Service] Menu - Mitsubishi Electric ecodan EHPT Série Manuel D'installation

5
System Set Up
Legionella Prevention Mode settings (LP mode)
1. Use button F3 to choose legionella mode active YES/NO.
2. To edit the legionella function, press down the MENU button for 3 seconds
and select "hot water", then press F4 key.
3. Use F1 and F2 keys to scroll through the menu selecting each subtitle in turn
by pressing CONFIRM. See the table below for description of each setting.
4. Enter the desired number using the function keys and press CONFIRM.
During Legionella Prevention Mode the temperature of the stored water is
increased above 60°C to inhibit legionella bacteria growth. It is strongly recom-
mended that this is done at regular intervals. Please check local regulations for
the recommended frequency of heat ups.
Note: When failures occur on the cylinder unit, the LP mode may not function normally.
Menu subtitle
Hot water temp.
Frequency
Start time
Max. operation time
Duration of max. temp.
en
[Initial Settings]
From the Initial settings menu the installer can set the following.
• [Date/Time] *Be sure to set it to the local standard time.
• [Language]
• [Summer time]
• [Temp. display]
• [Contact number]
• [Time display]
• [ºC/ºF]
• [Room sensor settings]
Follow the procedure described in General Operation for the set up operation.
<[Room sensor settings]>
For room sensor settings it is important to choose the correct room sensor de-
pending on the heating mode the system will operate in.
Time/Zone schedule setting screen

[Service] Menu

The service menu provides functions for use by installer or service engineer. It is NOT intended the home owner alters settings within this menu. It is for this reason
password protection is required to prevent unauthorised access to the service settings.
The factory default password is "0000".
Follow the procedure described in General Operation for the set up operation.
Many functions can not be set whilst the indoor unit is running. The installer should turn off the unit before trying to set these functions. If the installer attempts to change
the settings whilst the unit is running the main remote controller will display a reminder message prompting the installer to stop operation before continuing. By selecting
"Yes" the unit will cease operation.
<[Manual operation]>
During the filling of the system the primary circuit circulation pump and 3-way valve can be manually
overridden using manual operation mode.
When manual operation is selected a small timer icon appears in the screen. When selected, this
function will only remain in manual operation for a maximum of 2 hours. This is to prevent accidental
permanent override of the FTC.
►Example
Pressing F3 button will switch manual operation mode ON for the main 3-way valve. When filling of the
DHW 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
FTC can resume control of the cylinder unit.
25
Function
Desired temp. of stored hot water
Time between LP mode DHW tank heat ups
Time when LP mode will begin
Maximum time allowed for LP mode DHW tank heat
The time period after LP mode desired water temp. has been reached
Please note that LP mode uses the assistance of electric heaters to supple-
ment the energy input of the heat pump. Heating water for long periods of
time is not efficient and will increase running costs. The installer should give
careful consideration to the necessity of legionella prevention treatment whilst
not wasting energy by heating the stored water for excessive time periods.
The end user should understand the importance of this feature.
ALWAYS COMPLY WITH LOCAL AND NATIONAL GUIDANCE FOR YOUR
COUNTRY REGARDING LEGIONELLA PREVENTION.
Menu subtitle Description
Room RC zone
When 2-zone temperature control is active and wireless remote
select
controllers are available, from Room RC zone select screen, se-
lect zone no. to assign to each main remote controller.
Sensor setting
From sensor setting screen, select a room sensor to be used for
monitoring the room temperature from Zone1 and Zone2 sepa-
rately.
Control option
(Website manual)
A
B
C
D
When different
room sensors are
used according to
the time schedule
*1. Not specified (if a locally-supplied room thermostat is used)
Room RC 1-8 (one each for Zone1 and Zone2) (if a wireless
remote controller is used as a room thermostat)
*2. From sensor setting screen, select Time/Zone to make it
possible to use different room sensors according to the time
schedule set in the Select Time/ Zone menu. The room sen-
sors can be switched up to 4 times within 24 hours.
Selected
Manual operation menu screen
Range Unit Default value
60–70 °C 65
1–30 day 15
0:00–23:00 - 03:00
1–5 hour 3
1–120 min 30
Corresponding initial settings room sensor
Zone1 Zone2
Room RC 1-8 (one each
*1
for Zone1 and Zone2)
TH1 *1
Main remote controller *1
*1 *1
Time/ Zone*2 *1
Running Error
indication