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5
System Set Up
5.1.5 Water circuit only operation (Indoor unit only operation) (during installation work)
During installation work, once the primary and sanitary circuits are fully charged with water it may be flexible to engaged the electric
heater to provide DHW (For UK only). *
1. To start operation
● Check if the power supply is OFF, and turn DIP switch 4-4 and 4-5 ( on FTC) ON.
● Turn ON the power supply.
2. To end operation
*1
● Turn OFF the power supply.
● Turn DIP switch 4-4 and 4-5 (on FTC) OFF.
*1 When the water circuit only operation is ended, ensure to check over the settings after ambient loop is connected and fully
charged.
Note:
Prolonged running of this operation may affect the life of the electric heater.
en
*If booster heater equipped, the function is activated.
5.1.6 Smart grid ready
In DHW or heating operation, the commands in the table below can be used.
IN11
IN12
OFF (open) OFF (open) Normal operation
ON (short)
OFF (open) Switch-on recommendation
OFF (open) ON (short)
ON (short)
ON (short)
5.1.7 Main remote Controller Options
The heat pump unit comes factory fitted with a main remote controller. This incorporates a thermistor for temperature monitoring and a
graphical user interface to enable set-up, view current status and input scheduling functions. The main remote controller is also used
for servicing purposes. This facility is accessed via password protected service menus.
To provide the best efficiency Mitsubishi Electric recommends using automatic adaptation function based on room temperature. To
use this function a room thermistor needs to be present in a main living area. This can be done in a number of ways the most conveni-
ent are detailed below.
Refer to heating section of this manual for instructions on how to set compensation curve, Flow temp. or Room temp. (Auto
adaptation).
For instructions on how to set the thermistor input for the FTC please refer to Initial settings section.
The factory setting for space heating mode is pre-set to Room temp. mode (auto adaptation). If there is no room sensor present in
the system, this setting must be changed to either Compensation curve mode or Flow temp. mode.
31
Meaning
Switch-off command
Switch-on command
4 3 2 1
TBI.3
IN11
IN12
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