General Advice; Hot Water - Samsung MIM-E03CN Installation And Maintenance Manual

Handover of the System

General Advice

The heat pump comes with a Samsung controller which looks like
this, you should not use this or press the buttons, it is used for
commissioning and fault diagnosing the system only.
On Youtube (search for freedom heat pumps) there are videos
showing how to use the controller, faults etc.
Normally the remote controller will look like this: it will show Zone,
on SET 0.0°C and DHW set 48.0°C standard. The on off button will
be lit up in white. This is normal.
If the system goes into fault, the screen will show a number at the
bottom starting with E, for example E911 – A00. The green light
will go out and a red light will flash. The engineer will want to know
this number when you call.
Please avoid turning the unit off at the power supply especially
in cold weather. If the unit is off and the weather is very cold, it
cannot protect itself and your warranty will be at risk.
If the unit is off and the temperature outside is cold, it will
automatically run the pump for a few minutes to stop freezing.
In extreme weather, below -2°C the water pump will run
continuously, you cannot stop this.

Hot Water

On the right of the controller it will say DHW set 48°C standard, this means your unit is monitoring the cylinder temperature.
The unit is set up to maintain the water between 43 and 50°C for efficiency, this can be increased to operate between 53 and 60°C all
the time if required.
As you use the water the heat pump will constantly top up the cylinder. The hot water cylinder has priority over the heating, if the
cylinder temperature falls 5 degrees below its set point the unit will automatically switch to heating the cylinder. This should take less
than an hour.
Once set temperature is achieved the unit will go back to heating the house. The hot water cylinder loses almost no heat (1/3 a degree
an hour) if no hot water is used.
With if you want to heat the cylinder quickly press right so the DHW is high lit in blue press ok the screen will show the set temperature,
you can adjust this here. It should be on 48°C. Press ok and the screen offers options of economic, standard, power and forced, scroll
down 2 x to forced, press ok. This will heat the tank to set temperature immediately with the HP and Immersion together. It will return to
standard after 1 hour.
An anti-legionella / disinfection operation will be completed at a 3am every Tuesday morning. The unit will heat the cylinder with the
immersion to 60°C, the hot water will be hotter on a Wednesday morning than the rest of the week. If legionella is not completed this
e919 will flash on screen, you need to call an engineer to check it.
If you don't require 24/7 hot water It is possible to time clock the hot water to reduce costs, the timer video on you tube will show you
how to do this.