20
Subject to change without notice | 83056800fUK – Translation of the original operating manual | ait-deutschland GmbH
10 Maintenance
NOTE
We recommend that you sign a maintenance
agreement with an accredited heating
company.
10.1 Basic principles
The cooling circuit of the heat pump requires no
regular maintenance.
Local regulations – e.g. EU Regulation (EC) 517/2014 –
among other things, require leak checks beforehand
and/or for a logbook to be kept for certain heat pumps.
The hermetic tightness and refrigerant fill quantity are
criteria for whether a logbook has to be kept and leak
tests performed or not, and at what time intervals.
►
Ensure compliance with local regulations with
regard to the specific heat pump system.
10.2 Maintenance as required
● Checking and cleaning the components of the
heating circuit and the heat source, e.g. valves,
expansion vessels, circulation pumps, filters, dirt
traps
●
Test the function of the safety valve for the heat-
ing circuit
10.3
Clean and flush the evaporator
and condenser
► Clean and flush the evaporator/condenser strictly
according to the manufacturer's regulations.
► After flushing the evaporator/condenser with
chemical cleaning product: neutralise any
residues and flush the evaporator/condenser
thoroughly with water.
10.4 Yearly maintenance
►
Record the quality of the heating water analytically.
In case of deviations from the specifications, take
suitable measures without delay.
11 Faults
►
Read out the cause of the fault via the diagnostics
program of the heating and heat pump controller.
►
Contact the local partner of the manufacturer or
the factory's customer service. Have the fault
message and unit number (
“Unit sticker”,
page 3) to hand.
11.1
Manually unblock the heat source
circulation pump
Circulating pumps can block due to sediments or lon
-
ger standstill periods. This blockage can be removed
manually.
1. Unscrew the front panel of the module box.
2.
Undo deflating screw
(
①
) in the middle of the cir-
culation pump of the heat source.
3. Insert a screwdriver into the opening and release
the blocked shaft in the direction of rotation of the
circulating pump.
4.
Reinsert and tighten the deflating screw
(
①
).
5. Screw the front panel of the module box.
