Maintenance of F1226
Regular checks
Your heat pump is, in principle, maintenance free and therefore requires
minimal care after commissioning. On the other hand, it is recommended
that you check your installation regularly.
If something unusual occurs, messages about the malfunction appear in the
display in the form of different alarm texts. See alarm management on page
52.
Level vessel
The brine that obtains the heat in the ground is not normally
consumed but just pumped around. In most installations, there
is a level vessel where you can check if there is sufficient fluid in
the system. Ask your installer if you are unsure where the level
vessel is located. The level can vary due to the fluid’s temperat-
ure. If the level is below 1/3 topping up is required. Contact your
installer for assistance with filling.
1/3
LEK
Expansion vessel
The brine that obtains the heat in the ground is not normally
consumed but just pumped around. In some installations there
is an expansion tank instead of a level vessel (for example, where
the heat pump is not at the highest point in the brine system)
where the system pressure can be checked. Ask your installer if
you are unsure where the expansion tank is located. The pressure
can vary due to the fluid’s temperature. The pressure should not
fall below 0.5 bar. Contact your installer for assistance with
filling.
LEK
Safety valve
The water heater's safety valve sometimes releases a little water after hot
water usage. This is because the cold water, which enters the water heater
to replace the hot water, expands when heated causing the pressure to rise
and the safety valve to open.
17NIBE™ F1226Chapter 2 | The heat pump – the heart of the house
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