Maintenance Of Monobloc Systems; Maintenance Procedure; Hot Water Cylinder - Samsung MIM-E03CN Installation And Maintenance Manual

Maintenance of Monobloc Systems

The Samsung heat pump should be maintained at least once a year to comply with warranty and RHI.

Maintenance procedure

Stop the unit, clean the water filters, shut the valve, undo the back
and pull the strainer out and replace it.
Test the concentration of the Anti-freeze (glycol) in the system
using a Glycol tester the level should be 25%. If you don't have a
glycol tester a glycol tester / refractometer can be bought from
your heat pump supplier or online.
Refill the unit, pressure should be 0-3 bar.
We need to test the operation of the unit against the hot water cylinder. So first we need to draw off 50 litres of water, run a couple of
taps for 5 mins to achieve this. The unit should start up automatically in hot water mode, if it doesn't press the DHW power button on
the controller, in 3-4 mins it will start heating the cylinder, a coke can symbol will show in the status section of the remote controller.
The heat pump should be able to achieve 48°C cylinder temperature without using the immersion heater.
While running, check the outdoor unit for damage & debris, the coil needs washing, we recommend you use an approved EHS heat
pump cleaning chemical, your distributor will stock this. Instructions are given on the bottle. You also need to clean and polish the
outside casing we recommend car wax to do this.

Hot Water Cylinder

Check electrical connections & sensor is above the immersion and at
least 100mm into the tank and the overheat thermostat is set to 70°C. On
a Telford cylinder set the stat to 5.
With if you want to test 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. Measure the immersion heater current it should draw 12-13 Amps.
With the unit running flat out measure the temperature of the air as it
enters the coil and the temperature of the air in the garden.
They should be the same check cold air is not recirculating.